Tor Sverre Lande

• Yin, Maowen; Ravindran, Kiran K.G.; Hadjipanayi, Charalambos; Bannon, Alan; Monica, Ciro della & Rapeaux, Adrien [Vis alle 9 forfattere av denne artikkelen] (2026). Using Legacy Polysomnography Data to Train a Radar System to Quantify Sleep in Older Adults and People living with Dementia. IEEE Transactions on Biomedical Engineering. ISSN 0018-9294. doi: 10.1109/TBME.2026.3701134. Fulltekst i vitenarkiv
• Moulin, Kaspar Sigurd; Lande, Tor Sverre; Aunet, Snorre & Wisland, Dag Trygve Eckhoff (2026). Efficient Asynchronous Sampling of Ripple Counter in VCO-ADC Using Ripple Register and Event Arbitration. IEEE Transactions on Circuits and Systems - II - Express Briefs. ISSN 1549-7747. 73(2), s. 138–142. doi: https:/ieeexplore.ieee.org/document/11339947. Fulltekst i vitenarkiv Vis sammendrag

  We present a power and area-efficient solution for robust asynchronous sampling of a ripple counter for coarse-fine VCO-ADCs. We show that by replacing the parallel register with a delay-matched sequential register and utilizing asynchronous arbitration, sampling errors are avoided. Post-layout simulation of a 7-bit system shows that our proposed solution tolerates VCO frequencies <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$197\times $ </tex-math></inline-formula> higher than the baseline design, while requiring a 42 % increase in power and a 26 % area overhead, thereby improving upon a state-of-the-art double-counter solution.

• Yin, Maowen; Hadjipanayi, Charalambos; Ravindran, Kiran K G; Bannon, Alan; Rapeaux, Adrien & Monica, Ciro Della [Vis alle 9 forfattere av denne artikkelen] (2025). Unobtrusive Sleep Health Assessment Using Impulse Radar: A Pilot Study in Older People. IEEE Transactions on Biomedical Engineering. ISSN 0018-9294. doi: 10.1109/TBME.2025.3548780. Fulltekst i vitenarkiv
• Recha, Adrian Miguel Llop; Wisland, Dag Trygve Eckhoff; Lande, Tor Sverre & Kjelgård, Kristian Gjertsen (2024). Modelling of differential probing analysis for biomedical dielectric spectroscopy. IET Science, Measurement & Technology. ISSN 1751-8822. 19(1), s. 1–12. doi: 10.1049/smt2.12216. Fulltekst i vitenarkiv Vis sammendrag

  Transcutaneous microwave dielectric spectroscopy holds promise as a modality for non-invasive subcutaneous biomarker monitoring, such as blood glucose levels. Experimental studies have demonstrated a strong correlation between blood glucose concentration and blood permittivity using microwave signals. However, the sample volume of interest, blood vessels, is located underneath skin layers where the microwave signal interaction with other surrounding biomaterials is accumulated. Here, a computational study of the proposed method to mitigate the contribution of unwanted tissue and thereby increase the specificity of subcutaneous spectroscopy, using differential probing analysis (DPA), is presented. By exploiting the relationship between the diameter of an open-ended coaxial probe (OCP) and the size of its protruding electric field, two OCPs with different sizes can sense different volumes beneath the skin. The proposed method computationally subtracts the effect of unwanted tissue, estimated with the smaller probe, from the effective contribution of both blood and unwanted tissue with the larger one. The method is validated by using simulated models and data from the full wave software CST Studio Suite across frequencies ranging from 1 to 10 GHz, achieving errors comparable to state-of-the-art techniques.

• Hadjipanayi, Charalambos; Yin, Maowen; Bannon, Alan; Rapeaux, Adrien; Banger, Matthew & Haar, Shlomi [Vis alle 9 forfattere av denne artikkelen] (2024). Remote Gait Analysis Using Ultra-Wideband Radar Technology Based on Joint Range-Doppler-Time Representation. IEEE Transactions on Biomedical Engineering. ISSN 0018-9294. 71(10), s. 2854–2865. doi: 10.1109/TBME.2024.3396650. Fulltekst i vitenarkiv Vis sammendrag

  Objective: In recent years, radar technology has been extensively utilized in contactless human behavior monitoring systems. The unique capabilities of ultra-wideband (UWB) radars compared to conventional radar technologies, due to time-of-flight measurements, present new untapped opportunities for in-depth monitoring of human movement during overground locomotion. This study aims to investigate the deployability of UWB radars in accurately capturing the gait patterns of healthy individuals with no known walking impairments. Methods: A novel algorithm was developed that can extract ten clinical spatiotemporal gait features using the Doppler information captured from three monostatic UWB radar sensors during a 6-meter walking task. Key gait events are detected from lower-extremity movements based on the joint range-Doppler-time representation of recorded radar data. The estimated gait parameters were validated against a gold-standard optical motion tracking system using 12 healthy volunteers. Results: On average, nine gait parameters can be consistently estimated with 90-98% accuracy, while capturing 94.5% of participants' gait variability and 90.8% of inter-limb symmetry. Correlation and Bland-Altman analysis revealed a strong correlation between radar-based parameters and the ground-truth values, with average discrepancies consistently close to 0. Conclusion: Results prove that radar sensing can provide accurate biomarkers to supplement clinical human gait analysis, with quality similar to gold standard assessment. Significance: Radars can potentially allow a transition from expensive and cumbersome lab-based gait analysis tools toward a completely unobtrusive and affordable solution for in-home deployment, enabling continuous long-term monitoring of individuals for research and healthcare applications.

• Recha, Adrian Miguel Llop; Wisland, Dag Trygve Eckhoff; Lande, Tor Sverre & Kjelgård, Kristian Gjertsen (2023). Enhancing Measurement Specificity in Biological Samples with Differential Probing Analysis. I Soh, Ping Jack (Red.), 2023 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) Proceedings. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781665492171. s. 370–384. doi: 10.1109/IMBioC56839.2023.10304877. Fulltekst i vitenarkiv
• Recha, Adrian Miguel Llop; Wisland, Dag Trygve Eckhoff; Lande, Tor Sverre; Kjelgård, Kristian Gjertsen & Cauwenberghs, Gert (2023). Wideband Proximity Coupling Sensor for Wrist Heart Rate Monitoring. I Chen, Jie (Red.), 2023 IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9798350300260. doi: 10.1109/BioCAS58349.2023.10388551. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2022). valuation of UWB Radar Module for Snow Water Equivalent Monitoring. I Bozzi, Maurizio (Red.), 2022 52nd European Microwave Conference (EuMC). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9782874870682. s. 87–90. doi: 10.23919/EuMC54642.2022.9924383. Fulltekst i vitenarkiv
• Recha, Adrian Miguel Llop; Wisland, Dag Trygve Eckhoff; Lande, Tor Sverre & Kjelgård, Kristian Gjertsen (2022). Differential Analysis in Microwave Dielectric Probing for Transcutaneous Biomedical Sensing, 2021 51st European Microwave Conference (EuMC). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9782874870620. s. 845–848. doi: 10.23919/EuMC50147.2022.9784189. Fulltekst i vitenarkiv
• Eriksrød, Jon Håvard; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2022). Design of robust and low-loss 3-D printed double-ridged waveguide to microstrip transition. IET Microwaves, Antennas & Propagation. ISSN 1751-8725. 16(4), s. 224–232. doi: 10.1049/mia2.12233. Fulltekst i vitenarkiv
• Lauteslager, Timo; Tømmer, Mathias; Lande, Tor Sverre & Constandinou, Timothy G. (2022). Dynamic Microwave Imaging of the Cardiovascular System Using Ultra-Wideband Radar-on-Chip Devices. IEEE Transactions on Biomedical Engineering. ISSN 0018-9294. 69(9), s. 2935–2946. doi: 10.1109/TBME.2022.3158251. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2021). Shielding of Tri-Patch Antenna Using 3D Printed Composite Carbon/PLA Absorber for Ultra Wideband Snow Radar Systems. I Shimoni, Michal (Red.), 2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781665403696. s. 1039–1042. doi: 10.1109/IGARSS47720.2021.9554338. Fulltekst i vitenarkiv
• Eriksrød, Jon Håvard; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2020). Complex Dielectric Constant of Wet Snow Using Bi-Static Synthetic Aperture Radar. I Breinbjerg, Olav (Red.), Proceedings of 14th European Conference on Antennas and Propagation (EuCAP 2020). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9788831299008. doi: 10.23919/EuCAP48036.2020.9135720. Fulltekst i vitenarkiv
• Eriksrød, Jon Håvard; Burkhart, John; Lande, Tor Sverre & Hamran, Svein-Erik (2020). Bistatic SAR Radar for Long-Term Snow Pack Monitoring. IEEE Transactions on Geoscience and Remote Sensing. ISSN 0196-2892. 58(1), s. 218–226. doi: 10.1109/TGRS.2019.2935781. Fulltekst i vitenarkiv
• Lauteslager, Timo; Tømmer, Mathias; Lande, Tor Sverre & Constandinou, Timothy G (2019). Coherent UWB Radar-on-Chip for In-Body Measurement of Cardiovascular Dynamics. IEEE Transactions on Biomedical Circuits and Systems. ISSN 1932-4545. 13(5), s. 814–824. doi: 10.1109/TBCAS.2019.2922775. Fulltekst i vitenarkiv
• Eriksrød, Jon Håvard; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2019). A 3D-Printed Saddle reflector for upwards-looking Bi-static SAR Snow Radar. I Philippe, Eudeline (Red.), 16th European Radar Conference, EuRAD 2019. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9782874870576. Fulltekst i vitenarkiv
• Eriksrød, Jon Håvard; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2019). In-situ Snowpack Inspection using Bi-static Radar, 2019 13th European Conference on Antennas and Propagation (EuCAP 2019). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781538681275. Fulltekst i vitenarkiv
• Han, Yang; Lauteslager, Timo; Lande, Tor Sverre & Constandinou, Timothy G (2019). UWB Radar for Non-contact Heart Rate Variability Monitoring and Mental State Classification. IEEE Engineering in Medicine and Biology Society. Conference Proceedings. ISSN 1557-170X. s. 6578–6582. doi: 10.1109/EMBC.2019.8856920. Fulltekst i vitenarkiv
• Maslik, Michal; Liu, Yan; Lande, Tor Sverre & Constandinou, Timothy G (2018). Continuous-Time Acquisition of Biosignals Using a Charge-Based ADC Topology. IEEE Transactions on Biomedical Circuits and Systems. ISSN 1932-4545. 12(3), s. 471–482. doi: 10.1109/TBCAS.2018.2817180. Fulltekst i vitenarkiv
• Schires, Elliott; Georgiou, P. & Lande, Tor Sverre (2018). Vital sign monitoring through the back using an UWB impulse radar with body coupled antennas. IEEE Transactions on Biomedical Circuits and Systems. ISSN 1932-4545. 12(2), s. 292–302. doi: 10.1109/TBCAS.2018.2799322. Fulltekst i vitenarkiv
• Moser, N; Rodriguez-Manzano, M.; Lande, Tor Sverre & Georgiou, P. (2018). A scalable ISFET sensing and memory array with sensor auto-calibration for on-chip real-time DNA detection. IEEE Transactions on Biomedical Circuits and Systems. ISSN 1932-4545. 12(2), s. 390–401. doi: 10.1109/TBCAS.2017.2789161. Fulltekst i vitenarkiv Vis sammendrag

  This paper presents a novel CMOS-based system-onchip with a 78 × 56 ion-sensitive field-effect transistor array using in-pixel quantization and compensation of sensor nonidealities. The pixel integrates sensing circuitry and memory cells to encode the ion concentration in time and store a calibration value per pixel. Temperature sensing pixels spread throughout the array allow temperature monitoring during the reaction. We describe the integration of the array as part of a lab-on-chip cartridge that plugs into a motherboard for power management, biasing, data acquisition, and temperature regulation. This forms a robust ion detection platform, which is demonstrated as a pH sensing system. We show that our calibration is able to perform readout with a linear spread of 0.3% and that the system exhibits a high pH sensitivity of 3.2 µs/pH. The complete system is shown to perform on-chip realtime DNA amplification and detection of lambda phage DNA by loop-mediated isothermal amplification.

• Kjelgård, Kristian Gjertsen; Wisland, Dag T & Lande, Tor Sverre (2018). 3D Printed Wideband Microwave Absorbers using Composite Graphite/PLA Filament. I Suárez, Rodríguez Almudena (Red.), 2018 48th European Microwave Conference (EuMC). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9782874870514. s. 859–862. doi: 10.23919/EuMC.2018.8541699. Fulltekst i vitenarkiv
• Eriksrød, Jon Håvard; Kjelgård, Kristian Gjertsen; Tømmer, Mathias; Burkhart, John & Lande, Tor Sverre (2017). Bi-static environmental SAR radar imager. I Jari, Nurmi (Red.), 2017 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781538628447. doi: 10.1109/NORCHIP.2017.8124979. Fulltekst i vitenarkiv
• Bjørndal, Øystein & Lande, Tor Sverre (2017). Power-efficient, gate-based Digital-to-Time converter in CMOS. IEEE International Symposium on Circuits and Systems proceedings. ISSN 0271-4302. doi: 10.1109/ISCAS.2017.8050433. Fulltekst i vitenarkiv
• Andersen, Nikolaj; Granhaug, Kristian; Michaelsen, Jørgen Andreas; Bagga, Sumit; Hjortland, Håkon André & Knutsen, Mats Risopatron [Vis alle 8 forfattere av denne artikkelen] (2017). A 118mW 23.3GS/s dual-band 7.3GHz and 8.7GHz impulse-based direct RF sampling radar SoC in 55nm CMOS. Digest of technical papers - IEEE International Solid-State Circuits Conference. ISSN 0193-6530. 60, s. 138–140. doi: 10.1109/ISSCC.2017.7870299. Fulltekst i vitenarkiv
• Maslik, Michal; Liu, Yan; Lande, Tor Sverre & Constandinou, Timothy G (2017). A charge-based ultra-low power continuous-time ADC for data driven neural spike processing. Proceedings - IEEE International Symposium on Cicuits and Systems. ISSN 0271-4310. doi: 10.1109/ISCAS.2017.8050620. Fulltekst i vitenarkiv
• Andersen, Nikolaj; Granhaug, Kristian; Michaelsen, Jørgen Andreas; Bagga, Sumit; Hjortland, Håkon André & Knutsen, Mats Risopatron [Vis alle 8 forfattere av denne artikkelen] (2017). A 118-mW Pulse-Based Radar SoC in 55-nm CMOS for Non-Contact Human Vital Signs Detection. IEEE Journal of Solid-State Circuits. ISSN 0018-9200. 52(12), s. 3421–3433. doi: 10.1109/JSSC.2017.2764051. Fulltekst i vitenarkiv
• Midtbøen, Vegard; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2017). 3D printed horn antenna with PCB microstrip feed for UWB radar applications. I Perregrini, Luca (Red.), 2017 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781538604809. doi: 10.1109/IMWS-AMP.2017.8247374. Fulltekst i vitenarkiv
• Bjørndal, Øystein; Hamran, Svein-Erik & Lande, Tor Sverre (2017). Bitstream radar waveforms for generic single-chip radar. International Journal of Microwave and Wireless Technologies (IJMWT). ISSN 1759-0787. doi: 10.1017/S1759078717000782. Fulltekst i vitenarkiv Vis sammendrag

  A Digital-to-Time converter (DTC) based on static CMOS multiplexers is presented, achieving a time resolution of 65 ps consuming 0.5 mW. The DTC relies on gate delay for programmability, ensuring robustness, linearity and wide delay range. Details of the transistor implementation (with sizes) is given, together with a detailed discussion on critical design points. Post layout simulations with Monte Carlo, voltage and temperature variations are presented with measurements from two different chip realizations in 90 nm CMOS.

• Bjørndal, Øystein; Hamran, Svein-Erik & Lande, Tor Sverre (2016). Square wave architectures for radar-on-chip. I Gibson, Andrew (Red.), 2016 46th European Microwave Conference (EuMC). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9782874870439. s. 1485–1488. doi: 10.1109/EuMC.2016.7824636. Fulltekst i vitenarkiv
• Lauteslager, Timo; Tømmer, Mathias; Kjelgård, Kristian Gjertsen; Lande, Tor Sverre & Constandinou, T (2016). Intracranial heart rate detection using UWB radar, Biomedical Circuits and Systems Conference (BioCAS), 2016 IEEE. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781509029594. s. 119–122. doi: 10.1109/BioCAS.2016.7833739. Fulltekst i vitenarkiv
• Tømmer, Mathias; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2016). Body coupled wideband monopole antenna, 2016 Loughborough Antennas & Propagation Conference Proceedings. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781509007820. doi: 10.1109/LAPC.2016.7807483. Fulltekst i vitenarkiv
• Lee, Kin Keung; Lande, Tor Sverre & Häfliger, Philipp (2015). A sub-µW bandgap reference circuit with an inherent curvature-compensation property. IEEE Transactions on Circuits and Systems I: Regular Papers. ISSN 1549-8328. 62(1), s. 1–9. doi: 10.1109/TCSI.2014.2340553. Fulltekst i vitenarkiv Vis sammendrag

  A new current-mode bandgap reference circuit (BGR) which is capable of generating sub-1-V output voltage is presented. It has not only the lowest theoretical minimum current consumption among published current-mode BGRs, but also additional advantages of an inherent curvature-compensation function and not requiring NPN BJTs. The curvature-compensation is achieved by utilizing the exponential behavior of sub-threshold CMOS transistors to compensate the BJT base-emitter voltage high-order temperature dependence. By taking advantages of the continuing development of CMOS technology, sub-µW power consumption is achieved with a reasonable core area. Related design considerations and challenges are discussed and analyzed. The proposed BGR is realized in a TSMC 90 nm process. Measurement results shows a temperature coefficient without trimming as low as 10.1 ppm/°C over a temperature range of 70°C because of the proposed curvature-compensation technique. The average value is 32.6 ppm/°C which could be improved by trimming resistor ratios. The average power consumption at room temperature is 576 nW, with a core area of only 0.028 mm².

• Mæland, Kenneth; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2015). CMOS distributed amplifiers for UWB radar. I Almeida, Teresa Mendes de (Red.), Circuits and Systems (ISCAS), 2015 IEEE International Symposium on. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479983919. s. 1298–1301. doi: 10.1109/ISCAS.2015.7168879. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2015). A CMOS UWB K-band impulse radar receiver. I Gibson, Andrew (Red.), 2015 12th European Radar Conference Proceedings. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9782874870415. s. 329–332. doi: 10.1109/EuRAD.2015.7346304. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen; Høvin, Mats Erling & Lande, Tor Sverre (2015). Body-coupled, wideband antennas. I Ghovanloo, Maysam (Red.), 2015 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479972333. doi: 10.1109/BioCAS.2015.7348386. Fulltekst i vitenarkiv
• Bjørndal, Øystein; Hamran, Svein-Erik & Lande, Tor Sverre (2015). UWB waveform generator for digital CMOS radar. I Almeida, Teresa Mendes de (Red.), Circuits and Systems (ISCAS), 2015 IEEE International Symposium on. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479983919. s. 1510–1513. doi: 10.1109/ISCAS.2015.7168932. Fulltekst i vitenarkiv
• Aardal, Øyvind; Brovoll, Sverre; Paichard, Yoann; Berger, Tor; Lande, Tor Sverre & Hamran, Svein-Erik (2015). Radar sensitivity to human heartbeats and respiration. Proceedings of SPIE, the International Society for Optical Engineering. ISSN 0277-786X. doi: 10.1117/12.2180924. Fulltekst i vitenarkiv Vis sammendrag

  Human heartbeats and respiration can be detected from a distance using radar. This can be used for medical applications and human being detection. It is useful to have a system independent measure of how detectable the vital signs are. In radar applications, the Radar Cross Section (RCS) is normally used to characterize the detectability of an object. Since the human vital signs are seen by the radar as movements of the torso, the modulations in the person RCS can be used as a system independent measure of the vital signs detectability. In this paper, measurements of persons seated in an anechoic chamber are presented. The measurements were calibrated using empty room and a metallic calibration sphere. A narrowband radar operating at frequencies from 500 MHz to 18 GHz in discrete steps was used. A turntable provided measurements at precise aspect angles all around the person under test. In an I & Q receiver, the heartbeat and respiration modulation is a combination of amplitude and phase mod- modulations. The measurements were filtered, leaving the modulations from the vital signs in the radar recordings. The procedure for RCS computation was applied to these filtered data, capturing the complex signatures. It was found that both the heartbeat and respiration detectability increase with increasing frequency. The heartbeat signatures are almost equal from the front and the back, while being almost undetectable from the sides of the person. The respiration signatures are slightly higher from the front than from the back, and smaller from the sides. The signature measurements presented in this paper provide an objective system independent measure of the detectability of human vital signs as a function of frequency and aspect angle. These measures are useful for example in system design and in assessing real measurement scenarios. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

• Lee, Kin Keung & Lande, Tor Sverre (2014). A 5.3 pJ/Pulse Impulse-Radio UltraWideband Pulse-Generator for Band Group # 6, Proceedings of the 32nd Norchip Conference. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479954421. doi: 10.1109/NORCHIP.2014.7004728. Fulltekst i vitenarkiv
• Lee, Kin Keung & Lande, Tor Sverre (2014). A 2.8–7.5 pJ/pulse highly-flexible impulse-radio ultra-wideband pulse-generator. Progress In Electromagnetics Research C. 55, s. 139–147. doi: 10.2528/pierc14110301. Fulltekst i vitenarkiv Vis sammendrag

  A low-power on-off-keying impulse-radio (IR) ultra-wideband (UWB) pulse generator (PG) intended for wireless-powered IR-UWB radio applications is presented. The proposed PG has high flexibility, the center frequency, output power and pulse-width (PW) are controllable depending on channel conditions and data rates. Qualitative frequency-domain and transient analyses are presented. A new figure-of-merit (FoM) is proposed such that a more precise comparison between different PGs can be made. The PG is successfully implemented in a TSMC 90 nm CMOS process, measurements show the energy consumption and FoM to be 2.8–7.5 pJ/pulse and 1.6–2.6% respectively. The output swing and PW are 277–329 mVp-p and 509–1088 ps respectively. The core area is 0.092 mm².

• Lee, Kin Keung & Lande, Tor Sverre (2014). A wireless-powered IR-UWB transmitter for long-range passive RFID Tags in 90-nm CMOS. IEEE Transactions on Circuits and Systems - II - Express Briefs. ISSN 1549-7747. 61(11), s. 870–874. doi: 10.1109/TCSII.2014.2350292. Fulltekst i vitenarkiv Vis sammendrag

  An impulse radio ultrawideband (IR-UWB) transmitter (TX) intended for long-range passive radio-frequency (RF) identification tags is presented. It is wirelessly powered by an ultrahigh-frequency (UHF) signal. A 128-bit pseudonoise code is transmitted when enough energy is harvested. A new on-off-keying multicycle energy-efficient IR-UWB pulse generator (PG) is proposed, and a co-design with power management circuits is introduced to improve the system supply noise performance. A novel injection-locking divider co-designed with an RF voltage rectifier is proposed to eliminate the injection input resistive load that exists in some designs; otherwise, the input sensitivity would be degraded. A proof-of-concept prototype is fabricated in a TSMC 90-nm CMOS process. Measurements show the TX input sensitivity to be approximately -17.5 dBm with a 900-MHz UHF input. The measured PG output swing is 195 mVp-p with a -10 dB bandwidth of approximately 3.4 GHz.

• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2014). A differential K-band UWB transmitter for short range radar application with continuous running local oscillator. Progress In Electromagnetics Research C. 50, s. 1–9. doi: 10.2528/PIERC14032104. Fulltekst i vitenarkiv
• Bakken, Leif Elias; Lande, Tor Sverre & Holm, Sverre (2014). Real Time UWB Radar Imaging Using Single Chip Transceivers, International Symposium on Circuits and Systems (ISCAS), 2014 IEEE. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479934317. s. 2461–2464. doi: 10.1109/ISCAS.2014.6865671. Fulltekst i vitenarkiv
• Brovoll, Sverre; Berger, Tor; Paichard, Yoann; Aardal, Øyvind; Lande, Tor Sverre & Hamran, Svein-Erik (2014). Time-lapse imaging of human heart motion with switched array UWB radar. IEEE Transactions on Biomedical Circuits and Systems. ISSN 1932-4545. doi: 10.1109/TBCAS.2014.2359995. Fulltekst i vitenarkiv Vis sammendrag

  Radar systems for detection of human heartbeats have mostly been single-channel systems with limited spatial resolution. In this paper, a radar system for ultra-wideband (UWB) imaging of the human heart is presented. To make the radar waves penetrate the human tissue the antenna is placed very close to the body. The antenna is an array with eight elements, and an antenna switch system connects the radar to the individual elements in sequence to form an image. Successive images are used to build up time-lapse movies of the beating heart. Measurements on a human test subject are presented and the heart motion is estimated at different locations inside the body. The movies show rhythmic motion consistent with the beating heart, and the location and shape of the reflections correspond well with the expected response form the heart wall. The spatial dependent heart motion is compared to ECG recordings, and it is confirmed that heartbeat modulations are seen in the radar data. This work shows that radar imaging of the human heart may provide valuable information on the mechanical movement of the heart.

• Vu, Anh Tuan & Lande, Tor Sverre (2013). A continuous-time differential single-bit quantizer for IR-UWB receivers. I Ren, Liu (Red.), 2013 IEEE International Conference on Ultra-Wideband (ICUWB). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479909698. s. 721–725. doi: 10.1109/ICUWB.2013.6663863. Fulltekst i vitenarkiv
• Dooghabadi, Malihe Zarre; Hjortland, Håkon André; Næss, Øyvind; Lee, Kin Keung & Lande, Tor Sverre (2013). An IR-UWB Transmitter for Ranging Systems. IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing. ISSN 1057-7130. 60(11), s. 721–725. doi: 10.1109/TCSII.2013.2281909. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2013). A K-band UWB receiver front-end with passive mixer in 90 nm CMOS. I Ren, Liu (Red.), 2013 IEEE International Conference on Ultra-Wideband (ICUWB). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479909698. s. 180–183. doi: 10.1109/icuwb.2013.6663844. Fulltekst i vitenarkiv
• Dooghabadi, Malihe Zarre; Hjortland, Håkon André & Lande, Tor Sverre (2013). An ultra-wideband receiving antenna array. I Chen, Chang Wen; Gao, Wen & Vandewalle, Joos (Red.), 2013 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467357609. s. 2373–2376. doi: 10.1109/ISCAS.2013.6572355. Fulltekst i vitenarkiv
• Sudalaiyandi, Shanthi; Hjortland, Håkon André & Lande, Tor Sverre (2013). A continuous-time IR-UWB RAKE receiver for coherent symbol detection. Analog Integrated Circuits and Signal Processing. ISSN 0925-1030. 77(1), s. 17–27. doi: 10.1007/s10470-013-0120-0. Fulltekst i vitenarkiv
• Vu, Anh Tuan; Hjortland, Håkon André; Næss, Øivind & Lande, Tor Sverre (2013). A 3–5 GHz IR-UWB receiver front-end for wireless sensor networks. I Chen, Chang Wen; Gao, Wen & Vandewalle, Joos (Red.), 2013 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467357609. s. 2380–2383. doi: 10.1109/ISCAS.2013.6572357. Fulltekst i vitenarkiv
• Vu, Anh Tuan; Sudalaiyandi, Shanthi; Næss, Øivind; Lande, Tor Sverre & Hjortland, Håkon André (2013). An inductorless 3–5 GHz band-pass filter with tunable center frequency in 90 nm CMOS. I Chen, Chang Wen; Gao, Wen & Vandewalle, Joos (Red.), 2013 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467357609. s. 1284–1287. doi: 10.1109/ISCAS.2013.6572088. Fulltekst i vitenarkiv
• Dooghabadi, Malihe Zarre; Hjortland, Håkon André & Lande, Tor Sverre (2013). A linear IR-UWB MIMO radar array. I Ren, Liu (Red.), 2013 IEEE International Conference on Ultra-Wideband (ICUWB). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479909698. s. 13–19. doi: 10.1109/ICUWB.2013.6663814. Fulltekst i vitenarkiv
• Lee, Kin Keung & Lande, Tor Sverre (2013). Analysis and design of sub-μW bandgap references in nano-meter CMOS. I Ismail, Mohammed (Red.), Proceeding of the IEEE International Midwest Symposium on Circuits and Systems 2013. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781479900657. s. 93–96. doi: 10.1109/MWSCAS.2013.6674593. Fulltekst i vitenarkiv
• Aardal, Øyvind; Paichard, Yoann; Brovoll, Sverre; Berger, Tor; Lande, Tor Sverre & Hamran, Svein-Erik (2013). Physical Working Principles of Medical Radar. IEEE Transactions on Biomedical Engineering. ISSN 0018-9294. doi: 10.1109/TBME.2012.2228263. Fulltekst i vitenarkiv Vis sammendrag

  There has been research interest in using radar for contactless measurements of the human heartbeat for several years. While many systems have been demonstrated, not much attention have been given to the actual physical causes of why this work. The consensus seems to be that the radar senses small body movements correlated with heartbeats, but whether only the movements of the body surface or reflections from internal organs are also monitored have not been answered definitely. There has recently been proposed another theory that blood perfusion in the skin could be the main reason radars are able to detect heartbeats. In this paper, an experimental approach is given to determine the physical causes. The measurement results show that it is the body surface reflections that dominate radar measurements of human heartbeats.

• Lee, Kin Keung & Lande, Tor Sverre (2012). Co-Design of Antenna, Matching Network and Voltage Rectifier in State-of-the-Art CMOS. The Midwest Symposium on Circuits and Systems conference proceedings. ISSN 1548-3746. s. 49–52. doi: 10.1109/mwscas.2012.6291954. Fulltekst i vitenarkiv
• Sudalaiyandi, Shanthi; Hjortland, Håkon André; Vu, Tuan Anh; Næss, Øivind & Lande, Tor Sverre (2012). Live Demonstration: IR-UWB Transceiver with Localization Based on ToF Technique Suitable for Wireless Capsule Endoscopy. I Fang, Wai-Chi (Red.), IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467322928. s. 89–89. Fulltekst i vitenarkiv
• Wisland, Dag T; Støa, Stig; Andersen, Nikolaj; Granhaug, Kristian; Lande, Tor Sverre & Hjortland, Håkon André (2012). CMOS nanoscale impulse radar utilized in 2-dimensional ISAR imaging system. I Blair, William Dale & Bruder, Joseph (Red.), 2012 IEEE RADAR CONFERENCE. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467306560. s. 714–719. doi: 10.1109/radar.2012.6212231. Fulltekst i vitenarkiv
• Sudalaiyandi, Shanthi; Vu, Tuan Anh; Hjortland, Håkon André; Næss, Øivind & Lande, Tor Sverre (2012). Continuous-Time Symbol Detector for IR-UWB Rake Receiver in 90 nm CMOS. I Wang, C (Red.), 2012 IEEE Asia Pacific Conference on Circuits and Systems. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457717284. s. 487–490. doi: 10.1109/apccas.2012.6419078. Fulltekst i vitenarkiv
• Sudalaiyandi, Shanthi; Hjortland, Håkon André; Vu, Tuan Anh; Næss, Øivind & Lande, Tor Sverre (2012). Continuous-Time High-Precision IR-UWB Ranging-System in 90 nm CMOS. I Yano, Yoichi (Red.), IEEE Asian Solid-State Circuits Conference. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467327695. doi: 10.1109/asscc.2012.6570786. Fulltekst i vitenarkiv Vis sammendrag

  Precision ranging is a key factor for localization in wireless sensor networks. But most reported ranging solutions are limited by clock frequency or clock synchronization. With the combination of continuous-time binary value (CTBV) technique and the impulse-radio ultra-wideband (IR-UWB) technology, we have a promising approach towards high precision positioning combined with communication. In this paper, we have presented a UWB communication solution with embedded ranging by measuring the symbol round trip time without a common reference clock. A first working clockless UWB ranging transceiver realized in 90 nm CMOS technology with fully integrated digital symbol detection including a running cross-correlator is implemented. Preliminary measured results shows that two transceivers in a master-slave configuration can estimate distance with centimeter precision (≒1.4 cm).

• Sudalaiyandi, Shanthi; Hjortland, Håkon André; Vu, Tuan Anh; Næss, Øyvind & Lande, Tor Sverre (2012). Live Demonstration: IR-UWB Transceiver with Localization Based on ToF Technique Suitable for Wireless Capsule Endoscopy. IEEE Transactions on Biomedical Circuits and Systems. ISSN 1932-4545. s. 89–89. Fulltekst i vitenarkiv
• Sudalaiyandi, Shanthi & Lande, Tor Sverre (2012). A Continuous-Time IR-UWB RAKE Receiver for Coherent Symbol Detection. I Lande, Tor Sverre (Red.), Proceedings of the 30th Norchip Conference, NORCHIP12. IEEE Press. ISSN 9781467322225. s. 1–4. doi: 10.1007/s10470-013-0120-0. Fulltekst i vitenarkiv
• Vu, Tuan Anh; Sudalaiyandi, Shanthi; Hjortland, Håkon André; Næss, Øivind & Lande, Tor Sverre (2012). An Inductorless 6-Path Band-Pass Filter with Tunable Center Frequency for UWB Applications. I James, Rautio (Red.), 2012 IEEE International Conference on Ultra-Wideband (ICUWB). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457720314. s. 164–167. doi: 10.1109/icuwb.2012.6340442. Fulltekst i vitenarkiv
• Vu, Tuan Anh; Sudalaiyandi, Shanthi; Hjortland, Håkon André; Næss, Øivind; Lande, Tor Sverre & Hamran, Svein-Erik (2012). A Variable-Gain Single-Bit Ultra-Wideband Quantizer for Baseband Receiver Front-End. I Wang, C (Red.), 2012 IEEE Asia Pacific Conference on Circuits and Systems. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457717284. s. 483–486. doi: 10.1109/apccas.2012.6419077. Fulltekst i vitenarkiv
• Bakken, Leif Elias; Lande, Tor Sverre & Holm, Sverre (2012). Effect of process variations in CMOS chips for radar beamforming. I Lande, Tor Sverre (Red.), Proceedings of the 30th Norchip Conference, NORCHIP12. IEEE Press. ISSN 9781467322225. s. 1–4. Fulltekst i vitenarkiv
• Cao, Tuan-Vu; Maier, Christoph; Wisland, Dag T; Lande, Tor Sverre & Cauwenbergh, Gert (2012). BFSK Mics Direct-DCO Transmitter with Adaptive Background Frequency Regulation. I Deval, Yann; Begueret, Jean-Baptiste & Belot, Didier (Red.), ESSCIRC (ESSCIRC), 2012 Proceedings of the. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467322126. s. 305–308. doi: 10.1109/esscirc.2012.6341315. Fulltekst i vitenarkiv
• Cao, Tuan-Vu; Wisland, Dag T & Lande, Tor Sverre (2012). High resolution Frequency-based Delta-Sigma Modulator utilizing multi-phase quantizer. I Sunwoo, Myung Hoon & Kang, Sung-Mo (Red.), Circuits and Systems (ISCAS), 2012 IEEE International Symposium on. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467302180. s. 3009–3012. doi: 10.1109/iscas.2012.6271951. Fulltekst i vitenarkiv
• Sudalaiyandi, Shanthi; Vu, Tuan Anh; Hjortland, Håkon André; Næss, Øivind & Lande, Tor Sverre (2012). Continuous-Time Single-Symbol IR-UWB Symbol Detection. I Sridhar, Ramalingam; Schuhmann, Norbert & Shi, Kaijian (Red.), IEEE International SOC Conference. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781467312950. s. 198–201. doi: 10.1109/socc.2012.6398347. Fulltekst i vitenarkiv Vis sammendrag

  RAKE based receivers are the most challenging receiver due to its hardware implementation complexity. To build a cross-correlating RAKE receiver with on-off keying pose significant design challenges due to multipath components. Also process variations in 90 nm CMOS technology impose significant challenges in the clockless system. In this paper, a simple coherent RAKE receiver using single-bit correlation in continuous time is reported. A working chip with fully integrated digital symbol detection without any clocks, ADC and filters for simple and power efficient CMOS implementation. Optimal design of the delay elements in the tapped delayline and the use of pulse width controller blocks (PWC) along the delayline allows narrow pulses through the system. The optimized delayline combined with the continuous-time high speed counter and the match thresholder constitute a complete continuous-time RAKE receiver in CMOS. Initial chip measurement shows that a data rate of 1.5 Mbit/s with a power consumption of 0.78 mW was possible.

• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2012). A 26 GHz UWB CMOS IR-UWB Transmitter with On-chip Balun. I Lande, Tor Sverre (Red.), Proceedings of the 30th Norchip Conference, NORCHIP12. IEEE Press. ISSN 9781467322225. s. 1–4. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2012). Design of 24 GHz UWB CMOS IR-UWB transmitter with on-chip balun. I James, Rautio (Red.), 2012 IEEE International Conference on Ultra-Wideband (ICUWB). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457720314. s. 320–323. doi: 10.1109/icuwb.2012.6340503. Fulltekst i vitenarkiv
• Lee, Kin Keung; Dooghabadi, Malihe Zarre; Hjortland, Håkon André; Næss, Øivind & Lande, Tor Sverre (2011). A 5.2 pJ/Pulse Impulse Radio Pulse Generator in 90 nm CMOS. I Lubaszewski, Marcelo & IEEE, ISCAS (Red.), Proc. 2011 IEEE International Symposium on Circuits and Systems. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781424494729. s. 1299–1302. doi: 10.1109/iscas.2011.5937809. Fulltekst i vitenarkiv
• Maier, C.; Cao, Tuan Vu; Wisland, Dag T; Lande, Tor Sverre & Cauwenberghs, G. (2011). Fast-settling multiple-loop adaptive frequency locking scheme for energy-efficient resonant FSK transmitter. Electronics Letters. ISSN 0013-5194. 47(14), s. 794–U78. doi: 10.1049/el.2011.1448. Fulltekst i vitenarkiv
• Dooghabadi, Malihe Zarre; Hjortland, Håkon André & Lande, Tor Sverre (2011). High precision calibrated digital delay element. Electronics Letters. ISSN 0013-5194. 47(9), s. 564–565. doi: 10.1049/el.2011.0395. Fulltekst i vitenarkiv
• Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2011). A K-band UWB CMOS pulse-mode radar transmitter. I Sawan, Mohamad (Red.), 2011 18th IEEE International Conference on Electronics, Circuits and Systems (ICECS). IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457718458. s. 500–503. doi: 10.1109/icecs.2011.6122322. Fulltekst i vitenarkiv
• Meier, C; Cao, Tuan Vu; Wisland, Dag T; Lande, Tor Sverre & Cauwenberghs, G. (2011). Energy-Efficient Resonant BFSK MICS Transmitter with Fast-Settling Dual-Loop Adaptive Frequency Locking. I Lubaszewski, Marcelo & IEEE, ISCAS (Red.), Proc. 2011 IEEE International Symposium on Circuits and Systems. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781424494729. s. 2601–2604. doi: 10.1109/iscas.2011.5938137. Fulltekst i vitenarkiv
• Cao, Tuan Vu; Wisland, Dag T; Lande, Tor Sverre & Moradi, Farshad (2011). Low phase-noise VCO utilizing modified symmetric load and partial positive feedback for FDSM. Analog Integrated Circuits and Signal Processing. ISSN 0925-1030. 73(1), s. 151–160. doi: 10.1007/s10470-011-9803-6. Fulltekst i vitenarkiv
• Aardal, Øyvind; Hamran, Svein-Erik; Berger, Tor; Paichard, Yoann & Lande, Tor Sverre (2011). Chest movement estimation from radar modulation caused by heartbeats. I Cauwenberghs, G. (Red.), IEEE Biomedical Circuits and Systems Conference 2011. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457714696. s. 422–425. doi: 10.1109/biocas.2011.6107825. Fulltekst i vitenarkiv
• Lee, Kin Keung; Hjortland, Håkon André & Lande, Tor Sverre (2011). IR-UWB Technology on Next Generation RFID Systems. I Öwall, Viktor (Red.), Proceedings of the Norchip 2011. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457705151. doi: 10.1109/norchp.2011.6126697. Fulltekst i vitenarkiv
• Vu, Tuan Anh; Sudalaiyandi, Shanthi; Hjortland, Håkon André; Næss, Øivind; Lande, Tor Sverre & Hamran, Svein-Erik (2011). A 70-dB, 3.1-10.6-GHz CMOS Amplifier in Low-Power 90 nm CMOS. The Midwest Symposium on Circuits and Systems conference proceedings. ISSN 1548-3746. s. 1–4. doi: 10.1109/MWSCAS.2011.6026639. Fulltekst i vitenarkiv
• Lee, Kin Keung; Næss, Øivind & Lande, Tor Sverre (2011). A 3.9 pJ/Pulse Differential IR-UWB Pulse Generator in 90 nm CMOS. I Martins, Rui (Red.), Proceedings of the Asia Pacific Conference on Postgraduate Research in Microelectronics & Electronics (PrimeAsia) 2011. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781457716102. s. 115–118. doi: 10.1109/primeasia.2011.6075084. Fulltekst i vitenarkiv
• Lee, Kin Keung; Dooghabadi, Malihe Zarre; Hjortland, Håkon André; Næss, Øivind & Lande, Tor Sverre (2011). A 5.2 pJ/Pulse Impulse Radio Pulse Generator in 90 nm CMOS. IEEE International Symposium on Circuits and Systems proceedings. ISSN 0271-4302. s. 1299–1302. Fulltekst i vitenarkiv
• Vu, Tuan Anh; Sudalaiyandi, Shanthi; Hjortland, Håkon André; Næss, Øivind; Lande, Tor Sverre & Hamran, Svein-Erik (2011). An ultra-wideband, continuous-time, differential, single-bit quantizer in 90 nm CMOS. I Nooshabadi, Saeid (Red.), Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on. IEEE (Institute of Electrical and Electronics Engineers). ISSN 9781612848563. s. 1–4. doi: 10.1109/mwscas.2011.6026680. Fulltekst i vitenarkiv

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• Ulvestad, Emil; Kjelgård, Kristian Gjertsen; Khanshan, Tohid Moradi; Wisland, Dag T & Lande, Tor Sverre (2018). High-speed Sampling System in CMOS. IEEE (Institute of Electrical and Electronics Engineers). ISBN 9781538676561. 4 s. Fulltekst i vitenarkiv
• Khanshan, Tohid Moradi; Kjelgård, Kristian Gjertsen; Ulvestad, Emil; Wisland, Dag T & Lande, Tor Sverre (2018). CMOS photosensors for LIDAR. IEEE (Institute of Electrical and Electronics Engineers). ISBN 9781538676561. 4 s. Fulltekst i vitenarkiv
• Cacho–Soblechero, Miguel; Georgiou, P. & Lande, Tor Sverre (2018). A fully-digital ISFET front-end with In-Pixel ΣΔ Modulation. IEEE (Institute of Electrical and Electronics Engineers). ISBN 9781538636039. 4 s. Fulltekst i vitenarkiv
• Maslik, Michal; Lande, Tor Sverre & Constandinou, Timothy G (2018). A Clockless Method of Flicker Noise Suppression in Continuous-Time Acquisition of Biosignals. IEEE Sarnoff Symposium. ISBN 9781538636039. 4 s. Fulltekst i vitenarkiv
• Lauteslager, Timo; Tømmer, Mathias; Lande, Tor Sverre & Constandinou, Timothy G (2018). Cross-Body UWB Radar Sensing of Arterial Pulse Propagation and Ventricular Dynamics. IEEE (Institute of Electrical and Electronics Engineers). ISBN 9781538636039. 4 s. Fulltekst i vitenarkiv
• Tørresen, Jim; Aunet, Snorre; Lande, Tor Sverre; Grutle, Øyvind Kallevik & Nielsen, Ivan R. (2015). Nordic Circuits and Systems Conference (NORCAS): NORCHIP & International Symposium on System-on-Chip (SoC), 2015. IEEE (Institute of Electrical and Electronics Engineers). ISBN 9781467365765. 275 s. Fulltekst i vitenarkiv
• Rahkonen, Timo; Liljeberg, Pasi; Halonen, Kari; Bruun, Erik; Madsen, Jan & Øwall, Viktor [Vis alle 10 forfattere av denne artikkelen] (2014). Proceedings of the 32nd Norchip Conference. IEEE (Institute of Electrical and Electronics Engineers). ISBN 9781479954421. 300 s. Fulltekst i vitenarkiv
• Lande, Tor Sverre (2012). Proceedings of the 30th Norchip Conference, NORCHIP12. IEEE Press. ISBN 9781467322225. 350 s. Fulltekst i vitenarkiv

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• Johansson, Håkan & Lande, Tor Sverre (2017). Welcome message-technical program chairs. Proceedings - IEEE International Symposium on Cicuits and Systems. ISSN 0271-4310. 2017:8049752, s. viii–viii. doi: 10.1109/ISCAS.2017.8049752. Fulltekst i vitenarkiv
• Hoel, Karina Vieira; Kristoffersen, Stein; Moen, Jonas; Kjelgård, Kristian Gjertsen & Lande, Tor Sverre (2016). Broadband Antenna Design Using Different 3D Printing Technologies and Metallization Processes. Fulltekst i vitenarkiv
• Hoel, Karina Vieira; Kristoffersen, Stein; Moen, Jonas; Holm, Gjermund & Lande, Tor Sverre (2016). Characterization of a 3D Printed Wideband Waveguide and Horn Antenna Structure Embedded in a UAV Wing. Fulltekst i vitenarkiv
• Brovoll, Sverre; Berger, Tor; Aardal, Øyvind; Lande, Tor Sverre & Hamran, Svein-Erik (2014). Distortion effects in a switch array UWB radar for time-lapse imaging of human heartbeats. Fulltekst i vitenarkiv
• Brovoll, Sverre; Aardal, Øyvind; Paichard, Yoann; Berger, Tor; Lande, Tor Sverre & Hamran, Svein-Erik (2013). Optimal frequency range for medical radar measurements of human heartbeats using body-contact radar. Fulltekst i vitenarkiv
• Brovoll, Sverre; Berger, Tor; Paichard, Yoann; Aardal, Øyvind; Lande, Tor Sverre & Hamran, Svein-Erik (2013). Time-lapse imaging of human heartbeats using UWB radar. Fulltekst i vitenarkiv
• Aardal, Øyvind; Brovoll, Sverre; Paichard, Yoann; Berger, Tor; Lande, Tor Sverre & Hamran, Svein-Erik (2013). Detecting changes in the human heartbeat with on-body radar. Fulltekst i vitenarkiv
• Cao, Tuan Vu; Maier, C.; Wisland, Dag T; Lande, Tor Sverre & Cauwenberghs, G. (2011). Live Demonstration: Energy-Efficient Resonant BFSK MICS Transmitter. Fulltekst i vitenarkiv
• Aunet, Snorre; Ytterdal, Trond; Lande, Tor Sverre & Moulin, Kaspar Sigurd (2021). Low-Power Neuromorphic Sound Source Localization. Norges teknisk-naturvitenskapelige universitet. Fulltekst i vitenarkiv Vis sammendrag

  I denne hovedoppgaven presenterer vi et neuromorft system for lydkildelokalisering basert på Jeffress sin lokaliseringsmodell. Systemet bruker nevral spike-koding og asynkrone delay-linjer for a beregne krysskorrelasjonen i tidsdomenet og bestemme tidsforsinkelsen mellom binaurale inngangssignaler. Vår tilnærming kan potensielt gi bedre ytelse enn dagens lokaliseringssystemer, med hensyn til effektforbruk og responstid. I de simulerte testene kan systemet estimere tidsforsinkelsen med omtrent 10us nøyaktighet, med et gjennomsnittlig effektforbruk på 350nW. Simuleringene viser også at systemet kan reagere på forandringer i tidsforsinkelsen på under et millisekund. Systemet er derimot svært avhengig av nøyaktig komponentmatching, og vil derfor kreve ytterligere former for kalibrering før fysisk implementering er mulig.

• Berge, Hans Kristian Otnes; Aunet, Snorre; Lande, Tor Sverre & Søråsen, Oddvar (2015). Improvements towards Optimal Design of Reliable Subthreshold Digital CMOS with applications in Logic and Memory. Universitetet i Oslo. Fulltekst i vitenarkiv Vis sammendrag

  This dissertation is organized as a collection of papers, where each paper represents original research contributions relating to the design and analysis of ultra low power CMOS, with a particular emphasis on ultra low voltage and subthreshold operation. The individual papers represent advancements particularily within methods and practices related to the design of both digital logic and memory circuits in the presence of severe process variation. At the device level it is demonstrated how the use of multiple minimum-width gates can exploit the inverse narrow-width subthreshold device effect to improve performance and power-delay products. Measurement results from a 90 nm prototype confirm the effect. Multi-objective optimization strategies are developed and applied to allow exploration of the Pareto optimal design space for reliable logic at 150mV. Targeting operation at 300mV, the design of a 9-transistor SRAM memory cell employing multi-Vt and virtual power techniques is presented. A multi-objective optimization strategy is developed and applied to achieve an optimal trade-off for an efficient and reliable sizing of the SRAM cell. Based on the 9-transistor cell, measured results from an ultra low voltage 64 × 32 SRAM module operating down to 273mV in a 65 nm technology indicate good yield and competitive performance metrics (17.8 fJ/access/bit at averages of 761 kHz @ 321mV supply). Finally, the behavior of subthreshold logic circuits under the influence of adverse fluctuations in the transistor threshold voltages is treated analytically, with specific emphasis on minimum-energy operation and yield constraints. The analysis can suggest optimal choices for supply voltage and device sizing, prior to simulation.

• Aardal, Øyvind; Hamran, Svein-Erik; Lande, Tor Sverre & Berger, Tor (2013). Radar monitoring of heartbeats and respiration. Universitetet i Oslo. Fulltekst i vitenarkiv Vis sammendrag

  This thesis addresses the use of radar for heartbeat and respiration monitoring. Medical radar can be used for detecting vital signs at distances up to several meters. A medical radar works by transmitting electromagnetic waves towards a person, and receiving echoes reflected off the person. Vital signs appear as modulations in the radar data in period with the heartbeats and respiration. We have measured and analyzed these modulations.<br> The ability to detect human heartbeats from a distance can be used for monitoring patients’ heartbeats without the need of attaching the measurement equipment to the patient. A radar system can be placed over a bed, integrated in a mattress or chair or used for non-intrusive home monitoring. It could also be used as an alternative to the diagnostic monitoring tools of today. In this thesis, the understanding of radar heartbeat detection is explored.<br> Although heartbeats and respiration monitoring using radar have been reported many times before, the optimal frequencies, waveforms and aspect angle of detection were not known. We have described the vital signs modulations as functions of frequency and aspect angle, and found both narrowband and ultra wideband radar to be suited for the task. In addition to quantizing the modulations, an experimental approach to understanding why heartbeat and respiration detection with radar is possible was made. We found that small body surface movements are the cause of the observed heartbeat modulations in radar data, discarding the theory that reflections from internal body organs are seen. On-body radar have been used as well, and a closer connection between the actual movements of the heart and the radar recordings were found than what is achievable using remote radar. With on-body radar and the processing presented in this thesis, details of the heart mechanics can be identified using radar. It is also possible to see changes in the measured waveform when the pulse and blood pressure of the person changes.

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