Yngvar Berg

• Azadmehr, Mehdi; Marchetti, Luca & Berg, Yngvar (2021). An analog voltage similarity circuit with a bell-shaped power consumption. Electronics. ISSN 2079-9292. 10(10). doi: 10.3390/electronics10101141.
• Azadmehr, Mehdi; Paprotny, Igor & Berg, Yngvar (2019). Q-Loading of Colpitts-Based Mass-Sensing Oscillators in Resonator-based MEMS Airborne Particulate Matter (PM) Sensors. IEEE International Symposium on Consumer Electronics. ISSN 2158-3994. doi: 10.1109/ICCE.2019.8662115.
• Marchetti, Luca; Azadmehr, Mehdi & Berg, Yngvar (2019). A bidirectional front-end for discrete resonating transducers based on a non ring oscillator, 16th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE conference proceedings. ISSN 978-1-7281-3361-4. p. 242–245. doi: 10.1109/ECTI-CON47248.2019.8955216.
• Mirmotahari, Omid; Berg, Yngvar; Fremstad, Ester & Damsa, Crina I. (2019). Student engagement by employing student peer reviews with criteria-based assessment. IEEE Global Engineering Education Conference, EDUCON. ISSN 2165-9559. April-2019, p. 1152–1157. doi: 10.1109/EDUCON.2019.8725174. Full text in Research Archive
• Mirmotahari, Omid; Berg, Yngvar; Gjessing, Stein; Fremstad, Ester & Damsa, Crina I. (2019). A Case-Study of Automated Feedback Assessment. IEEE Global Engineering Education Conference, EDUCON. ISSN 2165-9559. April-2019, p. 1190–1197. doi: 10.1109/EDUCON.2019.8725249. Full text in Research Archive
• Azadmehr, Mehdi; Schreyer-Miller, Aaron; Paprotny, Igor & Berg, Yngvar (2019). A New Differential Oscillator with T-type Feedback. In Chakrabarti, Satyajit & Saha, Himadri Nath (Ed.), 2018 9th IEEE Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON): 8th-10th November, 2018. IEEE. ISSN 978-1-5386-7693-6. p. 779–782. doi: 10.1109/UEMCON.2018.8796794.
• Elgesem Schumacher, Ole Herman; Mirmotahari, Omid & Berg, Yngvar (2018). Ultra-Low-Voltage Dual-Rail NAND/NOR for High Speed Processing, The Eleventh International Conference on Advances in Circuits, Electronics and Micro-electronics (CENICS). International Academy, Research and Industry Association (IARIA). ISSN 978-1-61208-664-4. p. 1–4.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2018). A Self-Actuated Front-End for Resonating Sensors, TENCON 2018 - 2018 IEEE Region 10 Conference. IEEE conference proceedings. ISSN 978-1-5386-5457-6. p. 559–564. doi: 10.1109/TENCON.2018.8650300.
• Dell’Anna, Francesco Giuseppe; Dong, Tao; Li, Ping; Yumei, Wen; Azadmehr, Mehdi & Berg, Yngvar (2018). Low-power voltage multiplier synthesis tool for preliminary topology identification, ICOSST 2017 International Conference on Open Source Systems and Technologies: Proceedings: 18-20 December, 2017 Lahore, Pakistan. IEEE. ISSN 9781538616581. p. 24–29. doi: 10.1109/ICOSST.2017.8279000.
• Dell’Anna, Francesco Giuseppe; Dong, Tao; Li, Ping; Wen, Yumei; Azadmehr, Mehdi & Casu, Mario R [Show all 7 contributors for this article] (2018). Lower-Order Compensation Chain Threshold-Reduction Technique for Multi-Stage Voltage Multipliers. Sensors. ISSN 1424-8220. 18(4). doi: 10.3390/s18041245. Show summary

  This paper presents a novel threshold-compensation technique for multi-stage voltage multipliers employed in low power applications such as passive and autonomous wireless sensing nodes (WSNs) powered by energy harvesters. The proposed threshold-reduction technique enables a topological design methodology which, through an optimum control of the trade-off among transistor conductivity and leakage losses, is aimed at maximizing the voltage conversion efficiency (VCE) for a given ac input signal and physical chip area occupation. The conducted simulations positively assert the validity of the proposed design methodology, emphasizing the exploitable design space yielded by the transistor connection scheme in the voltage multiplier chain. An experimental validation and comparison of threshold-compensation techniques was performed, adopting 2N5247 N-channel junction field effect transistors (JFETs) for the realization of the voltage multiplier prototypes. The attained measurements clearly support the effectiveness of the proposed threshold-reduction approach, which can significantly reduce the chip area occupation for a given target output performance and ac input signal

• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2018). A Discrete Implementation of a Semi-Floating Gate Amplifier for Resonating Sensor Front-End. In Napieralski, Andrzej (Eds.), Proceedings of 25th International Conference Mixed Design of Integrated Circuits and Systems (MIXDES 2018): Gdynia, Poland June 21-23, 2018 . IEEE. ISSN 978-1-5386-5911-3. p. 97–102. doi: 10.23919/MIXDES.2018.8443591.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2018). A Compact Bidirectional Pseudo Floating Gate Front-End for Resonating Sensors based on NAND and NOR logic Gates, 2018 IEEE International Conference on Semiconductor Electronics (ICSE2018): Proceedings: 15 – 17 August 2018 Pullman Kuala Lumpur City Centre Hotel & Residence, Kuala Lumpur, Malaysia. IEEE. ISSN 978-1-5386-5283-1. p. 221–225. doi: 10.1109/SMELEC.2018.8481284.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2018). A self-cascode pseudo floating gate front-end for resonating sensors , 2018 International ECTI Northern Section Conference on Electrical, Electronics, Computer and Telecommunications Engineering (ECTI-NCON 2018): Chiang Rai, Thailand 25 – 28 February 2018. IEEE. ISSN 978-1-5386-3553-7. p. 89–94. doi: 10.1109/ECTI-NCON.2018.8378288.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2018). A bidirectional front-end for ultrasonic pulse-echo measurements, 2018 IEEE 15th International Conference on Networking, Sensing and Control (ICNSC). March 27-29, Zhuhai, China. IEEE. ISSN 978-1-5386-5053-0. doi: 10.1109/ICNSC.2018.8361284.
• Azadmehr, Mehdi; Paprotny, Igor & Berg, Yngvar (2018). A Differential Complementary Colpitts Oscillator based on Common Drain Topology. In Ao, S. I.; Douglas, Craig & Grundfest, Warren S. (Ed.), Proceedings of the World Congress on Engineering and Computer Science 2018. International Conference on Circuits and Systems (ICCS 18). 23-25 October, 2018, San Francisco, USA. Vol I . Newswood Limited. ISSN 978-988-14048-1-7. p. 20–23.
• Dell’Anna, Francesco Giuseppe; Dong, Tao; Li, Ping; Wen, Yumei; Yang, Zhaochu & Casu, Mario R [Show all 8 contributors for this article] (2018). State-of-the-Art Power Management Circuits for Piezoelectric Energy Harvesters. IEEE Circuits and Systems Magazine (CAS Magazine). ISSN 1531-636X. 18(3), p. 27–48. doi: 10.1109/MCAS.2018.2849262.
• Dadashi, Ali; Berg, Yngvar & Mirmotahari, Omid (2018). Energy-efficient, fast-settling, modified nested-current-mirror, single-stage-amplifier for high-resolution LCDs in 90-nm CMOS. Analog Integrated Circuits and Signal Processing. ISSN 0925-1030. 97(2), p. 253–259. doi: 10.1007/s10470-018-1220-7.
• Mirmotahari, Omid; Berg, Yngvar; Langmyhr, Dag; Fremstad, Ester & Damsa, Crina I. (2018). Studentaktivisering gjennom bruk av hverandrevurdering for førstesemesters studenter i Canvas LMS: en forsøksstudie. NIKT: Norsk IKT-konferanse for forskning og utdanning. ISSN 1892-0713. 1(1). Full text in Research Archive
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2018). A Low Power, High Gain Semi-Floating Gate Amplifier for Resonating Sensors Front-End. Proceedings of IEEE Computer Society Annual Symposium on VLSI, ISVLSI. ISSN 2159-3469. 2018, p. 458–463. doi: 10.1109/ISVLSI.2018.00089.
• Mirmotahari, Omid; Berg, Yngvar & Damsa, Crina I. (2018). Innovating Assessment Practices Using Automated Feedback in Software in Computer Science Education. CEUR Workshop Proceedings. ISSN 1613-0073. 2128. Full text in Research Archive
• Mirmotahari, Omid; Damsa, Crina I. & Berg, Yngvar (2018). Formative Feedback for Learning. Case Studies of Automated Feedback in Undergraduate Computer Science Education. Proceedings (International Conference of the Learning Sciences). ISSN 1814-9316. 3, p. 1577–1578. Full text in Research Archive
• Mirmotahari, Omid & Berg, Yngvar (2018). Structured peer review using a custom assessment program for electrical engineering students. IEEE Global Engineering Education Conference, EDUCON. ISSN 2165-9559. 2018-April, p. 999–1006. doi: 10.1109/EDUCON.2018.8363339.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2017). An Autozeroing Inverter Based Front-End for Resonating Sensors. In IEEE, . (Eds.), 2017 12th IEEE International Conference on Design & Technology of Integrated Systems in Nanoscale Era (DTIS). IEEE. ISSN 978-1-5090-6377-2. doi: 10.1109/DTIS.2017.7930154.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2017). A bidirectional front-end with bandwidth control for actuation and read-out of MEMS resonating sensors. In IEEE, . (Eds.), 2017 MIXDES - 24th International Conference Mixed Design of Integrated Circuits and Systems: Bydgoszcz, Poland 22-24 June 2017. IEEE. ISSN 978-1-5090-6486-1. p. 185–188. doi: 10.23919/MIXDES.2017.8005180.
• Azadmehr, Mehdi; Marchetti, Luca; Elkharashi, Moataz & Berg, Yngvar (2017). A virtual Wheatstone bridge front-end for resistive sensors. In Fortino, Giancarlo (Eds.), Proceedings of the 2017 IEEE 14th International Conference on Networking, Sensing and Control (ICNSC 2017) May 16-18, 2017, Calabria, Italy. IEEE. ISSN 978-1-5090-4428-3. doi: 10.1109/ICNSC.2017.8000120.
• Marchetti, Luca; Berg, Yngvar; Mirmotahari, Omid & Azadmehr, Mehdi (2017). A control system for a low power bidirectional front-end for resonating sensors. In Fortino, Giancarlo (Eds.), Proceedings of the 2017 IEEE 14th International Conference on Networking, Sensing and Control (ICNSC 2017) May 16-18, 2017, Calabria, Italy. IEEE. ISSN 978-1-5090-4428-3. p. 322–326. doi: 10.1109/ICNSC.2017.8000112.
• Mirmotahari, Omid & Berg, Yngvar (2017). Erfaringer fra strukturert peer review ved bruk av et egetutviklet sensureringsprogram. NIKT: Norsk IKT-konferanse for forskning og utdanning. ISSN 1892-0713. 1(1).
• Mirmotahari, Omid & Berg, Yngvar (2017). High-Speed Digital Domino Logic for Ultra-Low Supply Voltages. Circuits, systems, and signal processing. ISSN 0278-081X. 36(12), p. 4774–4788. doi: 10.1007/s00034-017-0632-4.
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2017). Design and modelling of a bidirectional front-end for resonating sensors based on pseudo floating gate amplifier. Electronics. ISSN 2079-9292. 6(3). doi: 10.3390/electronics6030068. Full text in Research Archive Show summary

  In this paper, we characterize and model a bidirectional front-end based on pseudo-floating gate amplifier (PFGA) for actuation and read-out of resonating sensors. The basic idea consists of swapping the power supply of the PFGA in order to change the directionality of the front-end. A detailed description of the system has been discussed in this paper and supported by simulations and measurement results. A prototype has been fabricated using discrete components and tested with a real transducer (Murata MA40S4) and a Butterworth Van Dyke (BvD) load, which has proved to be proved to be a well approximated model for resonant sensors. The bidirectional amplifier has been implemented with the integrated circuit CD4007UB, which is a commercial discrete component containing low leakage MOSFET. The values chosen for the BvD load are Rb = 330 W, Lm = 60 mH, Cs = 450 pF, CE = 2.2 nF, which are approximately the same values of the lumped parameters reported in the data-sheet of the real sensor. This transducer is characterized by a nominal resonant frequency of 40 kHz. Measurement results show good fitting with the models developed in this work and the possibility to predict the sensor response by using the BvD load.

• Azadmehr, Mehdi; Marchetti, Luca & Berg, Yngvar (2017). A low power analog voltage similarity circuit. IEEE International Symposium on Circuits and Systems proceedings. ISSN 0271-4302. doi: 10.1109/ISCAS.2017.8050950. Show summary

  In this paper, we present a low power bump circuit for finding similarity between two voltages. The circuit is based on a voltage correlator that in combination with a differential pair achieves the low power behavior. The circuit has low power consumption and low sensitivity when the different between the two input is large, but as they approach each other the sensitivity increases. The proposed circuit is very simple in design and can have more than 4 orders of magnitude less power consumption than the normal bump circuit.

• Mirmotahari, Omid & Berg, Yngvar (2017). Individuell «automagisk» tilbakemelding på skriftlig eksamen. Nordic Journal of STEM Education. ISSN 2535-4574. 1(1), p. 287–293. doi: 10.5324/njsteme.v1i1.2327. Full text in Research Archive
• Marchetti, Luca; Berg, Yngvar & Azadmehr, Mehdi (2017). Analysis of the effect of channel leakage on design, characterization and modelling of a high voltage pseudo-floating gate sensor-front-end. Electronics. ISSN 2079-9292. 6(4), p. 1–26. doi: 10.3390/electronics6040079. Full text in Research Archive Show summary

  In this paper, we analyze the effects of channel leakage on the design, modelling and characterization of a high voltage pseudo-floating gate amplifier (PFGA) used as sensor front-end. Leakages are known as a major challenge in new modern CMOS technologies, which are used to bias the PFGA, and consequently affect the behavior of the amplifier. As high voltages are desired for actuation of many types of resonating sensors, especially in ultrasound applications, PFGA implemented in high voltage and low leakage technologies, such as older CMOS fabrication processes or power MOSFET can be the only option. The challenge with these technologies used to implement the PFGA is that the leakages are very low, which affect the biasing of the floating gate. However, the numerous advantages of this type of amplifier, implemented with modern fabrication processes, such as high flexibility, compactness, low power consumption , etc. encouraged the authors to research about this topic. This work provides analysis of the working principle and the design rules for this amplifier, emphasizing the major differences between PFGA implemented in low leakage and high leakage technologies. Static and dynamic analysis, input offset and non-linearity of the PFGA are the main topics of this article. Three different design approaches are presented in this paper, in order to provide a more general design procedure and offset compensation for any low leakage PFGA. The amplifier has been simulated in AMS-0.35mm CMOS models for supply voltages of 5 V and 10 V. Two prototypes have been realized to verify the validity of the modelling and the simulation results. Both devices have been realized by using discrete components and mounted on a printed circuit board. In this work, MOSFETs are realized by using commercial IC CD4007UB and 2N7000. Measurement results of the first prototype proved that the implementation of a low leakage PFGA is possible after that the input offset of the amplifier has been compensated. Measurement results of the second prototype have been used to characterize the low leakage PFGA, extracting the best performances from this amplifier, realized with less components and providing a more compact device. Finally, design rules have been summarized in order to implement this amplifier, which enjoys compactness and a relative low power dissipation.

• Marchetti, Luca; Berg, Yngvar; Mirmotahari, Omid & Azadmehr, Mehdi (2016). Bidirectional Front-End for Piezoelectric Resonator, 2016 IEEE 13th International Conference on Networking, Sensing, and Control (ICNSC 2016). IEEE conference proceedings. ISSN 978-1-4673-9975-3. doi: 10.1109/ICNSC.2016.7479028.
• Mirmotahari, Omid; Dadashi, Ali; Azadmehr, Mehdi & Berg, Yngvar (2016). High-speed dynamic dual-rail ultra low voltage static CMOS logic operating at 300 mV. In Bosio, Alberto (Eds.), 2016 11th IEEE International Conference on Design and Technology of Integrated Systems in Nanoscale Era (DTIS). IEEE conference proceedings. ISSN 978-1-5090-0336-5. doi: 10.1109/DTIS.2016.7483898.
• Marchetti, Luca; Romi, Amar; Berg, Yngvar; Mirmotahari, Omid & Azadmehr, Mehdi (2016). A discrete implementation of a bidirectional circuit for actuation and read-out of resonating sensors. In Bosio, Alberto (Eds.), 2016 11th IEEE International Conference on Design and Technology of Integrated Systems in Nanoscale Era (DTIS). IEEE conference proceedings. ISSN 978-1-5090-0336-5. doi: 10.1109/DTIS.2016.7483896.
• Mirmotahari, Omid & Berg, Yngvar (2016). Ultra Low-Voltage Static Precharge NAND/NOR Gates. In Ing, Geok (Eds.), Proceedings of the 2014 IEEE 5th International Nanoelectronics Conference (INEC). IEEE conference proceedings. ISSN 978-1-4673-4841-6. doi: 10.1109/INEC.2014.7460450.
• Dadashi, Ali; Mirmotahari, Omid & Berg, Yngvar (2016). A New Fully Differential Adaptive CMOS Line Driver Using Fuzzy Controller Suitable for ADSL Modems. Circuits and Systems. ISSN 2153-1285. 7(8), p. 1307–1323. doi: 10.4236/cs.2016.78114. Full text in Research Archive
• Dadashi, Ali; Mirmotahari, Omid & Berg, Yngvar (2016). NP-Domino, Ultra-Low-Voltage, High-Speed, Dual-Rail, CMOS NOR Gates . Circuits and Systems. ISSN 2153-1285. 7(8), p. 1916–1926. doi: 10.4236/cs.2016.78166.
• Dadashi, Ali; Mirmotahari, Omid & Berg, Yngvar (2015). An ultra-low-voltage, semi-floating-gate, domino, dual-rail, NOR gate. In Abbas, Mohamad; Chrzanowska-Jesk, M. & El-Kharashi, Watheq (Ed.), 2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS). IEEE conference proceedings. ISSN 978-1-5090-0246-7. p. 61–64. doi: 10.1109/ICECS.2015.7440249.
• Mirmotahari, Omid; Dadashi, Ali; Azadmehr, Mehdi & Berg, Yngvar (2015). Novel high-speed dynamic differential ultra low voltage logic for supply-voltage below 300 mV. In Abbas, Mohamad; Chrzanowska-Jesk, M. & El-Kharashi, Watheq (Ed.), 2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS). IEEE conference proceedings. ISSN 978-1-5090-0246-7. p. 53–56. doi: 10.1109/ICECS.2015.7440247.
• Berg, Yngvar & Mirmotahari, Omid (2015). Low-voltage and high-speed CMOS circuit design with low-power mode. In Abbas, Mohamad; Chrzanowska-Jesk, M. & El-Kharashi, Watheq (Ed.), 2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS). IEEE conference proceedings. ISSN 978-1-5090-0246-7. p. 57–60. doi: 10.1109/ICECS.2015.7440248.
• Berg, Yngvar & Mirmotahari, Omid (2015). Flexible Ultra-Low-Voltage CMOS Circuit Design Applicable for Digital and Analog Circuits Operating below 300mV. In O'Conner, Lisa (Eds.), 2015 IEEE Computer Society Annual Symposium on VLSI (ISVLSI). IEEE Press. ISSN 978-1-4799-8718-4. p. 646–651. doi: 10.1109/ISVLSI.2015.83.
• Dadashi, Ali; Berg, Yngvar & Mirmotahari, Omid (2015). High-Speed, Modified, Bulk stimulated, Ultra-Low-Voltage, Domino Inveter. In O'Conner, Lisa (Eds.), 2015 IEEE Computer Society Annual Symposium on VLSI (ISVLSI). IEEE Press. ISSN 978-1-4799-8718-4. p. 86–90. doi: 10.1109/ISVLSI.2015.100.
• Azadmehr, Mehdi; Khajeh, Belal & Berg, Yngvar (2015). A New self-sensing approach for actuation and readout of Piezoelectric resonating sensor. In Wang, Chi-Hsu & Huang, Yo-Ping (Ed.), ICNSC15, 12th IEEE international Conference on Networking, Sensing and Control. IEEE conference proceedings. ISSN 978-1-4673-6900-8. p. 232–235. doi: 10.1109/ICNSC.2015.7116040.
• Mirmotahari, Omid & Berg, Yngvar (2015). Reliability of High Speed Ultra Low Voltage Differential CMOS Logic. Circuits and Systems. ISSN 2153-1285. 6(5), p. 121–135. doi: 10.4236/cs.2015.65013. Full text in Research Archive Show summary

  In this paper, we present a solution to the ultra low voltage inverter by adding a keeper transistor in order to make the semi-floating-gate more stable and to reduce the current dissipation. Moreover, we also present a differential ULV inverter and elaborate on the reliability and fault tolerance of the gate. The differential ULV gate compared to both a former ULV gate and standard CMOS are given. The results are obtained through Monte-Carlo simulations.

• Azadmehr, Mehdi; Khakpour Khajeh, Belal & Berg, Yngvar (2014). A bidirectional circuit for actuation and read-out of resonating sensors, 2014 IEEE Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-4799-3773-8. doi: 10.1109/FTFC.2014.6828606.
• Azadmehr, Mehdi; Khakpour Khajeh, Belal & Berg, Yngvar (2014). An ultra-low voltage tunable dual-Band Pass Filter, Multi-Conference on Systems, Signals & Devices (SSD), 2014 11th International. IEEE conference proceedings. ISSN 978-1-4799-3866-7. doi: 10.1109/SSD.2014.6808846.
• Mirmotahari, Omid & Berg, Yngvar (2014). Latching Scheme in Multiple-Valued Recharged Logic. International Journal of Engineering ,Science and Innovative Technology. ISSN 2319-5967. 3(3), p. 57–72.
• Mahmood, Sohail Musa & Berg, Yngvar (2013). Ultra-low voltage and high speed NP domino carry propagation chain, 2013 IEEE Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-4673-6105-7. doi: 10.1109/FTFC.2013.6577759.
• Berg, Yngvar (2013). High Speed and Ultra Low-Voltage CMOS Carry Propagation Chain using Floating-Gate Transistors. In Privman, V. (Eds.), Sixth International Conference on Advances in Circuits, Electronics and Micro-electronics (CENICS 2013). International Academy, Research and Industry Association (IARIA). ISSN 978-1-61208-302-5. p. 1–6. doi: 10.1109/ftfc.2013.6577759.
• Mirmotahari, Omid & Berg, Yngvar (2013). Robustness of the Ultra Low-Voltage Domino Gates CMOS. In Privman, V. (Eds.), Sixth International Conference on Advances in Circuits, Electronics and Micro-electronics (CENICS 2013). International Academy, Research and Industry Association (IARIA). ISSN 978-1-61208-302-5. p. 7–12.
• Mirmotahari, Omid & Berg, Yngvar (2013). Robust Low-Power CMOS Precharge Logic, 2013 IEEE Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-4673-6105-7.
• Mahmood, Sohail Musa & Berg, Yngvar (2013). High Speed and Ultra Low-voltage CMOS Domino Carry gates. In Said, Agoujil; Hing Tang, Collin Howe & Oprisan, Sorinel (Ed.), RECENT ADVANCES in CIRCUITS, COMMUNICATIONS and SIGNAL PROCESSING. World Scientific and Engineering Academy and Society (WSEAS). ISSN 978-1-61804-164-7. p. 52–57. doi: 10.4236/cs.2016.78166.
• Azadmehr, Mehdi & Berg, Yngvar (2013). A Bulk-controlled Pseudo-Floating Gate Bandpass Filter. Recent Advances in Electrical Engineering. ISSN 1790-5117. CSCS 13 / ELEL 13, p. 59–63. doi: 10.1109/norchp.2008.4738294. Show summary

  In this paper we present a bulk-controlled Pseudo Floating-Gate (BCPFG) Bandpass filter. The filter has a limited Open-Loop gain and linearity for supply voltages down to 600mV . The filter is based on Pseudo Floating-Gate active load amplifier and in addition to gain, it offers frequency band adjustment. Both the low- and high-frequency cutoffs are controlled electronically using bias voltages through the transistor bulks. The BCPFG BP filter enjoys low component spread and compactness, containing only small size transistors and capacitors suited for integration. The simulations presented in this paper are valid for the 90nm CMOS transistor models from STM having a V DD equal to 1.2V and threshold voltage of 250mV.

• Mahmood, Sohail Musa & Berg, Yngvar (2013). Static NP domino Carry gates for Ultra Low Voltage and High Speed Full Adders. North atlantic university union: International Journal of Circuits, Systems and Signal Processing. ISSN 1998-4464. 7, p. 199–205.
• Berg, Yngvar (2012). A novel high speed differential ultra low-voltage CMOS Flip-Flop for high speed applications, CENICS 2012: The Fifth International Conference on Advances in Circuits, Electronics and Microelectronics. International Academy, Research and Industry Association (IARIA). ISSN 978-1-61208-213-4. p. 11–16.
• Berg, Yngvar & Mirmotahari, Omid (2012). Novel high-speed and ultra-low-voltage CMOS NAND and NOR domino gates, CENICS 2012: The Fifth International Conference on Advances in Circuits, Electronics and Microelectronics. International Academy, Research and Industry Association (IARIA). ISSN 978-1-61208-213-4. p. 5–10.
• Berg, Yngvar (2012). Ultra low-voltage CMOS transconductance amplifiers. Analog Integrated Circuits and Signal Processing. ISSN 0925-1030. 73(3), p. 683–692. doi: 10.1007/s10470-012-9924-6. Show summary

  Simple and symmetrical ultra low-voltage current mode analog circuits and autozeroing amplifiers are presented. The low-voltage analog circuits are based on low-voltage inverters resembling precharge digital logic. Ultra low-voltage analog circuits can be operated at supply voltages down to 250 mV with rail-to-rail input and output swing. The output current of the ultra low-voltage symmetrical transconductance amplifier can be quite large due to a current boost technique. Ultra low-voltage analog circuits can be operated at supply voltages down to 250 mV with rail- to-rail input and output swing. The current headroom is 3 lA and the supply voltage is 300 mV. For supply voltages down to 300 mV simulated data shows that the maximum clock frequency is approximately 600 MHz.

• Berg, Yngvar & Azadmehr, Mehdi (2012). Novel linear autozeroing floating-gate amplifier for ultra low-voltage applications. International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering. ISSN 2010-376X. 68, p. 262–265.
• Berg, Yngvar & Mirmotahari, Omid (2012). High Speed and Ultra Low-voltage CMOS NAND and NOR domino gates. International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering. ISSN 2010-376X. 68, p. 258–261. Show summary

  In this paper we ultra low-voltage and high speed CMOS domino logic. For supply voltages below 500mV the delay for a ultra low-voltage NAND2 gate is aproximately 10% of a complementary CMOS inverter. Furthermore, the delay variations due to mismatch is much less than for conventional CMOS. Differential domino gates for AND/NAND and OR/NOR operation are presented.

• Berg, Yngvar & Azadmehr, Mehdi (2012). Symmetric Autozeroing Floating-Gate Current Mirror, Differential Pair and Transconductance Amplifier for Ultra Low-Voltage Applications. North atlantic university union: International Journal of Circuits, Systems and Signal Processing. ISSN 1998-4464. 6(4), p. 255–262. Show summary

  In this paper we explore the symmetric autozeroing ultra low-voltage current mirror, differential pair and transconductance amplifier and present some applications. The ultralow transconductance amplifier has a current boost function and resembles switch-cap and auto-zero circuits. The current boost technique have been used to implement ultra-low voltage digital logic. The simulated data presented is relevant for a 90nm TSMC CMOS process.

• Berg, Yngvar & Mirmotahari, Omid (2012). Novel Static Ultra Low-Voltage and High Speed CMOS Boolean Gates. North atlantic university union: International Journal of Circuits, Systems and Signal Processing. ISSN 1998-4464. 6(4), p. 249–254. Show summary

  In this paper we present robust and high performance static ultra low-voltage CMOS binary logic. The delay of the ultra low-voltage logic presented are less than 10% of the delay of standard CMOS inverters. The logic gates presented are designed using semi floating-gate transistors and a current boost technique. The boolean gates resemble domino CMOS. The performance and robustness of different logic gates are examined and compared to complementary and domino CMOS logic.

• Berg, Yngvar & Mirmotahari, Omid (2012). Static Differential Ultra Low-Voltage Domino CMOS logic for High Speed Applications. North atlantic university union: International Journal of Circuits, Systems and Signal Processing. ISSN 1998-4464. 6(4), p. 269–274. Show summary

  In this paper we present a novel static differential ultra low-voltage (ULV) CMOS logic style for High-Speed applications . The proposed logic style is aimed for high speed serial adders in ultra low-voltage applications. The differential ultra low-voltage inverter presented have less than 10% of the delay than standard CMOS inverters for supply voltages less than 500mV . The simulated data presented is obtained using Hspice simulator and applying a 90nm TSMC CMOS process.

• Berg, Yngvar (2012). Ultra Low-Voltage Differential Static D Flip-Flop for High Speed Digital Applications. North atlantic university union: International Journal of Circuits, Systems and Signal Processing. ISSN 1998-4464. 6(4), p. 263–268. Show summary

  In this paper we present an ultra low-voltage and high speed D flip-flop. The flip-flop has an increased current level compared to standard CMOS circuits operating at low supply voltages. The increased current level is obtained by using a synchronized capacitive coupling to a semi floating-gate. The delay of the static differential flip-flop presented is less than 12% compared to conventional differential CMOS flip-flops. The presented circuits have been simulated using Hspice and are valid for 90nm TSMC CMOS process. The proposed high-speed and ultra low-voltage flip-flop can be used for any digital lowvoltage CMOS application.

• Azadmehr, Mehdi & Berg, Yngvar (2012). A band-tunable auto-zeroing amplifier. Recent Advances in Electrical Engineering. ISSN 1790-5117. 3(CSCS 12), p. 24–28. Show summary

  In this paper we present a tunable Auto-Zeroing Amplifier(AZA). The amplifier is based on Pseudo Floating gate and in addition to gain, it offers frequency band adjustment. Both the low- and high-frequency cutoffs are controlled electronically using bias voltages, thus the amplifier can be used in design of various time continues filters. The peak gain of the AZA is 22dB dB at 100 MHz and has a bandwidth from. The AZA enjoys low component spread and compactness, containing only small size transistors and capacitors suited for integration. We will also show a second order section realized using the AZA. The simulations presented in this paper are valid for the 90nm CMOS transistor models from STM having a V DD equal to 1.2V and threshold voltage of 0.25V.

• Berg, Yngvar & Mirmotahari, Omid (2012). Ultra low-voltage and high speed dynamic and static CMOS precharge logic, 2012 Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-4673-0820-5. doi: 10.1109/dtis.2016.7483898. Show summary

  Proceedings of the 11th Faible Tension Faible Consommation meeting (FTFC 2012), June 6-8. 2012 - Paris, France. (Low Voltage Low Power Conference). [Publisher: IEEE ; Distributor: Curran Associates]

• Azadmehr, Mehdi & Berg, Yngvar (2012). An ultra-low voltage pseudo-floating gate amplifier, 2012 Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-4673-0820-5. doi: 10.1109/ftfc.2012.6231740. Show summary

  Proceedings of the 11th Faible Tension Faible Consommation meeting (FTFC 2012), June 6-8. 2012 - Paris, France. (Low Voltage Low Power Conference). [Publisher: IEEE ; Distributor: Curran Associates]

• Berg, Yngvar & Azadmehr, Mehdi (2012). Novel ultra low-voltage and high-speed CMOS pass transistor logic, 2012 Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-4673-0820-5. Show summary

  Proceedings of the 11th Faible Tension Faible Consommation meeting (FTFC 2012), June 6-8. 2012 - Paris, France. (Low Voltage Low Power Conference). [Publisher: IEEE ; Distributor: Curran Associates]

• Mirmotahari, Omid; Berg, Yngvar & Høvin, Mats Erling (2012). Automation of Packing Cell in Fresh Fish Facilities. International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering. ISSN 2010-376X. 68, p. 1956–1961.
• Berg, Yngvar (2011). ULTRA LOW-VOLTAGE AND HIGH-SPEED CMOS FULL ADDER USING FLOATING-GATES AND MULTIPLE-VALUED LOGIC. Proceedings - International Symposium on Multiple-Value Logic (ISMLV). ISSN 0195-623X. p. 259–262. doi: 10.1109/ISMVL.2011.11.
• Azadmehr, Mehdi & Berg, Yngvar (2011). Current-starved pseudo floating-gate filters. In Kanoun, Olfa (Eds.), Transactions on systems, signals and devices : issues on sensors, circuits & instrumentation. Shaker Verlag. ISSN 978-3-8440-0678-0. p. 381–399. doi: 10.1109/ssd.2009.4956753.
• Berg, Yngvar (2011). Ultra-Low-Voltage and High-Speed CMOS Full Adder Using the Floating Gates and Multiple-Valued Logic, Proceedings of the IEEE Symposium on Multiple-Valued Logic (ISMVL 2011). IEEE conference proceedings. ISSN 978-0-7695-4405-2. p. 259–262.
• Berg, Yngvar (2011). NOVEL CLOCKED SEMI-FLOATING-GATE DIFFERENTIAL TRANSCONDUCTANCE AMPLIFER FOR ULTRA-LOW VOLTAGE ANALOG DESIGN. In Mazouffe, Oliver (Eds.), Proceedings of the IEEE NEWCAS Conference. IEEE conference proceedings. ISSN 978-1-61284-136-6. p. 285–288.
• Berg, Yngvar (2011). NOVEL HIGH SPEED DIFFERENTIAL CMOS FLIP-FLOP FOR ULTRA LOW-VOLTAGE APPICATIONS. In Mazouffe, Oliver (Eds.), Proceedings of the IEEE NEWCAS Conference. IEEE conference proceedings. ISSN 978-1-61284-136-6. p. 241–244.
• Berg, Yngvar & Mirmotahari, Omid (2011). Static ultra low-voltage and high performance CMOS NAND and NOR gates. In Mladenov, Valeri & Martin, Olga (Ed.), Recent researches in circuits, systems, mechanics and transportation systems : Proceedings of the 10th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (CSECS '11) : Proceedings of the 7th WSEAS International Conference on Applied and Theoretical Mechanics (MECHANICS '11) : Proceedings ot the 2nd International Conference on Automotive and Transportation Systems (ICAT '11) : Montreux, Switzerland, December 29-31, 2011. World Scientific and Engineering Academy and Society (WSEAS). ISSN 978-1-61804-062-6. p. 143–146.
• Berg, Yngvar & Mirmotahari, Omid (2011). Novel static differential ultra low-voltage and high speed domino CMOS logic. In Mladenov, Valeri & Martin, Olga (Ed.), Recent researches in circuits, systems, mechanics and transportation systems : Proceedings of the 10th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (CSECS '11) : Proceedings of the 7th WSEAS International Conference on Applied and Theoretical Mechanics (MECHANICS '11) : Proceedings ot the 2nd International Conference on Automotive and Transportation Systems (ICAT '11) : Montreux, Switzerland, December 29-31, 2011. World Scientific and Engineering Academy and Society (WSEAS). ISSN 978-1-61804-062-6. p. 138–142. doi: 10.4236/cs.2015.65013.
• Berg, Yngvar (2011). Differential static ultra low-voltage CMOS flip-flop for high speed applications. In Mladenov, Valeri & Martin, Olga (Ed.), Recent researches in circuits, systems, mechanics and transportation systems : Proceedings of the 10th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (CSECS '11) : Proceedings of the 7th WSEAS International Conference on Applied and Theoretical Mechanics (MECHANICS '11) : Proceedings ot the 2nd International Conference on Automotive and Transportation Systems (ICAT '11) : Montreux, Switzerland, December 29-31, 2011. World Scientific and Engineering Academy and Society (WSEAS). ISSN 978-1-61804-062-6. p. 134–137.
• Berg, Yngvar & Azadmehr, Mehdi (2011). Symmetric autozeroing floating-gate transconductance amplifier for ultra low-voltage applications. In Mladenov, Valeri & Martin, Olga (Ed.), Recent researches in circuits, systems, mechanics and transportation systems : Proceedings of the 10th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (CSECS '11) : Proceedings of the 7th WSEAS International Conference on Applied and Theoretical Mechanics (MECHANICS '11) : Proceedings ot the 2nd International Conference on Automotive and Transportation Systems (ICAT '11) : Montreux, Switzerland, December 29-31, 2011. World Scientific and Engineering Academy and Society (WSEAS). ISSN 978-1-61804-062-6. p. 129–133.
• Azadmehr, Mehdi & Berg, Yngvar (2011). A bi-directional auto-zeroing floating-gate amplifier. In Mladenov, Valeri & Martin, Olga (Ed.), Recent researches in circuits, systems, mechanics and transportation systems : Proceedings of the 10th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (CSECS '11) : Proceedings of the 7th WSEAS International Conference on Applied and Theoretical Mechanics (MECHANICS '11) : Proceedings ot the 2nd International Conference on Automotive and Transportation Systems (ICAT '11) : Montreux, Switzerland, December 29-31, 2011. World Scientific and Engineering Academy and Society (WSEAS). ISSN 978-1-61804-062-6. p. 70–75.
• Azadmehr, Mehdi & Berg, Yngvar (2011). A band pass Auto-Zeroing Floating-Gate Amplifier. In Ea, Thomas (Eds.), 2011 Faible Tension Faible Consommation (FTFC). IEEE conference proceedings. ISSN 978-1-61284-646-0. p. 83–86. doi: 10.1109/ftfc.2011.5948925. Show summary

  Proceedings of the 10th Faible Tension Faible Consommation meeting (FTFC 2011), Marrakech, 30 May - 1 June 2011. (Low Voltage Low Power Conference). [Publisher: IEEE ; Distributor: Curran Associates]

• Berg, Yngvar & Mirmotahari, Omid (2011). Ultra low-voltage CMOS current mirrors. Analog Integrated Circuits and Signal Processing. ISSN 0925-1030. 68(2), p. 219–232. doi: 10.1007/s10470-011-9607-8.
• Moradi, Farshad; Wisland, Dag T; Berg, Yngvar; Aunet, Snorre & Cao, Tuan Vu (2010). Process Variations in Sub-Threshold SRAM Cells in 65nm CMOS. IEEE International Conference on Microelectronic Test Structures. Proceedings. ISSN 1071-9032. p. 371–374.
• Berg, Yngvar (2010). ULTRA LOW VOLTAGE STATIC CARRY GENERATE CIRCUIT. IEEE International Symposium on Circuits and Systems proceedings. ISSN 0271-4302. p. 1476–1479.
• Berg, Yngvar (2010). Novel ultra low voltage transconductance amplifier. IEEE International Symposium on Circuits and Systems proceedings. ISSN 0271-4302. p. 1244–1247.
• Berg, Yngvar (2010). Novel ultra low voltage semi floating-gate passband transconductance amplifier. IEEE Mediterranean Electrotechnical Conference. ISSN 2158-8473. p. 286–289.
• Berg, Yngvar (2010). Low Voltage Semi Floating-Gate Binary to Multiple-Value and Multiple-Value to Binary Converters. Proceedings - International Symposium on Multiple-Value Logic (ISMLV). ISSN 0195-623X. p. 79–82. doi: 10.1109/ISMVL.2010.22.
• Azadmehr, Mehdi & Berg, Yngvar (2010). An auto-zeroing current-starved floating-gate band pass filter. In Constantinides, Anthony & Mitra, Sanjit K. (Ed.), Proceedings of the 4th INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS, CONTROL AND SIGNAL PROCESSING. IEEE Signal Processing Society. ISSN 978-1-4244-6286-5.
• Moradi, Farshad; Wisland, Dag T; Mahmoodi, Hamid; Berg, Yngvar & Cao, Tuan Vu (2010). New SRAM Design Using Body Bias Technique for Ultra Low Power Applications. In Gadepally, Kamesh (Eds.), Proceedings of the Eleventh International Symposium on Quality of Electronic Design (ISQED 2010). IEEE conference proceedings. ISSN 978-1-4244-6454-8.
• Berg, Yngvar (2010). NOVEL HIGH SPEED AND ULTRA LOW VOLTAGE CMOS FLIP-FLOPS. In Macii, Enrico (Eds.), Proceedings of IEEE International Conference on Electronics, Circuits and Systems. IEEE conference proceedings. ISSN 978-1-4244-8156-9. p. 298–301.
• Berg, Yngvar & Azadmehr, Mehdi (2010). Reconfigurable pseudo floating-gate analog circuits. In Macii, Enrico (Eds.), Proceedings of IEEE International Conference on Electronics, Circuits and Systems. IEEE conference proceedings. ISSN 978-1-4244-8156-9. p. 215–218.
• Berg, Yngvar (2010). STATIC ULTRA-LOW-VOLTAGE HIGH-SPEED CMOS LOGIC AND LATCHES. In Hidalgo, José I. (Eds.), 2010 18th IEEE/IFIP International Conference on VLSI and System-on-Chip (VLSI-SOC 2010). IEEE conference proceedings. ISSN 978-1-4244-6470-8. p. 115–118.

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• Dadashi, Ali; Berg, Yngvar & Mirmotahari, Omid (2017). Fast-settling, energy-efficient, amplifier for high-resolution LCD displays.
• Dadashi, Ali; Mirmotahari, Omid & Berg, Yngvar (2016). Domino Dual­Rail, High­Speed, NOR Logic, with 300mV supply in 90 nm CMOS Technology.
• Dadashi, Ali; Berg, Yngvar & Mirmotahari, Omid (2016). A High-Performance CMOS Modified Amplifier.
• Marchetti, Luca; Mirmotahari, Omid; Berg, Yngvar & Azadmehr, Mehdi (2016). Bidirectional front-end for piezoelectric resonator.
• Marchetti, Luca; Mirmotahari, Omid; Berg, Yngvar & Azadmehr, Mehdi (2016). A discrete implementation of a bidirectional circuit for actuation and read-out of resonating sensors.
• Mirmotahari, Omid; Dadashi, Ali & Berg, Yngvar (2016). High-speed dynamic dual-rail ultra low voltage static CMOS logic operating at 300 mV.
• Dadashi, Ali; Mirmotahari, Omid & Berg, Yngvar (2015). Ultra-Low-Voltage, Semi-Floating-Gate, Domino, Dual-Rail, Nor Gate.
• Azadmehr, Mehdi & Berg, Yngvar (2011). A band pass Auto-Zeroing Floating-Gate Amplifier.
• Moradi, Farshad; Wisland, Dag T; Aunet, Snorre & Berg, Yngvar (2011). Ultra Low Power Digital Circuit Design for Wireless Sensor Network Applications. Universitetet i Oslo. ISSN 1501-7710.

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