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Our work has been
supported by:

SDSU

ONR

SDSU Research Foundation

SEC SDSU IV

Cadence Americas University Software Program

MOSIS

IMEC

HKUST, Hong Kong

RGC, Hong Kong

Canada Gov.

Silterra

MOSTI

SHRDC

MMU, Malaysia

Telekom Malaysia

DK Engineering

Hi-Z Technology
      Teh AMPM (Analog, Mixed-signal and Power Microelectronics) Research Group
       @ VLSI Design & Test Lab (Engineering building, room E-218)
       Department of Electrical & Computer Engineering
       San Diego State University
       5500 Campanile Drive
       San Diego, CA 92182-1309.

Our research philosophy: Energy and power are deemed as "hard currency" in the context of electronic system. Therefore every joule and watt must be budgeted wisely to maximize the return over energy & power invested, particularly in mobile application, where battery charge is limited. We also explore self-powered solution by harvesting ambient non-electrical energy to extend battery life, or in some cases, eliminate the battery entirely. 

   Research Projects (on-going):

  • Power optimization and security of IoT edge device for sustainable environment research 
  • Reconfigurable energy harvester power management unit (PMU) using near/sub-threshold and time-domain logic
  • Design and power analysis of small-scale, unmanned autonomous vehicle using commercial-off-the-shelf (COTS)  components under extreme climate conditions
  
   Publications:
    (Click here for Google Scholar profile)
   
   Journals
  • K. Diaz, Y. K. Teh, "Design and Power Management of a Secured Wireless Sensor System for Salton Sea Environmental Monitoring," Electronics, Vol 9, Issue 4, 544, Mar 2020.  (Invited Paper)
  • Q. Wan, Y. K. Teh, G. Yuan, P. K. T. Mok, “Analysis and Design of a Thermoelectric Energy Harvesting System with Reconfigurable Array of Thermoelectric Generators for IoT Applications,” IEEE Transactions on Circuits and Systems I (TCAS-I), Vol 64, Issue 9, pg 2346-2358, Sep 2017.
  • Y.K. Teh, P.K.T. Mok, “A Bipolar Output Pulse Transformer Boost Converter with Charge Pump Assisted Shunt Regulator for Thermoelectric Energy Harvesting,” Analog Integrated Circuits and Signal Processing Journal,  Vol 88, Issue 2, pg 319-331, Aug 2016. (Invited Paper for MWSCAS 2014 Special Issue) 
  • Y.K. Teh, P.K.T. Mok, “DTMOS-based Pulse Transformer Boost Converter with Complementary Charge Pump for Multi-Source Energy Harvesting,” IEEE Transactions on Circuits and Systems II (TCAS2), Vol 63, Issue 5, pg 508-512, May 2016.
  • Y.K. Teh, P.K.T. Mok, “Design of Transformer-based Boost Converter for High Internal Resistance Energy Harvesting Sources With 21 mV Self-Startup Voltage and 74% Power Efficiency,” IEEE Journal of Solid State Circuits (JSSC), Vol 49, Issue 11, pg 2694 – 2704, Nov 2014.
  • Y.K. Teh, P.K.T. Mok, “A Stacked Capacitor Multi-Microwatts Source Energy Harvesting Scheme With 86 mV Minimum Input Voltage and +-3 V Bipolar Output Voltage,” IEEE Journal on Emerging and Selected Topics in Circuits and Systems (JETCAS), Vol 4, Issue 3, pg 313 – 323, Sep 2014.
  • A.M.H. Kwan, S. Song, X. Lu, L. Lu, Y.K. Teh, Y.F. Teh, E.W.C. Chong, Y.G.W. Hau, F. Zeng, M. Wong, C. Huang, T. Akira, M. Yoshihide, N. So, T. Toshiyuki, T. Osamu, “Improved Designs for an Electro-Thermal In-Plane Micro-Actuator,” IEEE Journal of Microelectromechanical Systems (JMEMS), Vol 21, Issue 3, pg 586 - 595, Jun 2012.
  • Y.K. Teh, F. Mohd-Yasin, F. Choong, M.B.I. Reaz, A.V. Kordesch, “Design and Analysis of UHF Micro-Power CMOS DTMOST Rectifiers,” IEEE Transactions on Circuits and Systems II (TCAS2), Vol 56, Issue 2, pg 122-126, Feb 2009.
  • Y.K. Teh, F. Mohd-Yasin, F. Choong, M.B. Reaz, “Design of adaptive supply voltage for sub-threshold logic based on sub-1V bandgap reference circuit,” Microelectronics Journal (Elsevier), Vol 39, Issue 1, pg 24-29, Jan 2008. 
  • F. Mohd-Yasin, Y.K. Teh, M.B. Reaz, A. Kordesch, “Developing Designs for RFID Transponder using DTMOS,” Microwaves & RF, Vol 46, Issue 4, pg 70-80, Apr 2007.
  • F. Mohd-Yasin, Y.K. Teh, M.B. Reaz, “Develop Advanced Designs for RFID Transponders,” Microwaves & RF, Vol 45, Issue 10, pg 82 - 88, Oct 2006.
  • F. Mohd-Yasin, Y.K. Teh, M.B. Reaz, “Developing Designs for RFID Transponders”, Microwaves & RF, Vol 45, Issue 9, pg 57 - 68, Sep 2006. 

   Conferences
  • N. Swangpattaraphon, Y.K. Teh, "Impact of Circuit Parameters on Input Impedance of 433.92 MHz ISM Band RF Rectifiers," IEEE ICSE 2020, Kuala Lumpur, Malaysia July 2020. (MS student project supervised)
  • A. Peraza, A. Freiha, C. Hernandez, K. Whaley, T. Barbarito, T. Sizik, K. Diaz and Y.K. Teh, “A LoRa-based Dual-CPU Core Salton Sea Environmental Monitoring Wireless Sensor System," 2020 IEEE Conference on Technologies for Sustainability (SusTech), Santa Ana, California, USA, 23-25 Apr 2020. (Senior student design project supervised)
  • X. Xue, Y.K. Teh, “Power Quality Evaluation of Six-Step Commutation Brushless DC Motor Implemented on 32-Bit ARM Cortex Microcontroller," 2020 IEEE Conference on Technologies for Sustainability (SusTech), Santa Ana, California, USA, 23-25 Apr 2020. (MS student project supervised)
  • X. Xue, Y.K. Teh, “Power Quality Evaluation and Optimization of Sensor-less Field Oriented Controller on 32-bit ARM Cortex Microcontroller,” Proceedings of the 2019 IEEE 62th International Midwest Symposium on Circuits and Systems (MWSCAS 2019), Dallas, Texas, USA, Aug 2019.  (MS student project supervised)
  • K. Diaz, Y.K. Teh, “Power Optimization of Arduino-Based Sensor System for Salton Sea Environmental Monitoring,” Proceedings of the 2019 IEEE 62th International Midwest Symposium on Circuits and Systems (MWSCAS 2019), Dallas, Texas, USA, Aug 2019.  (MS student project supervised)
  • N. Swangpattaraphon, Y.K. Teh, "Design Consideration of 433.92 MHz ISM Band RF Rectifier for Wireless IoT Cloud Application," IEEE CCWC 2019, Las Vegas, Jan 2019. (Best presenter award, MS student project supervised)
  • Y.T. Shin, Y.K. Teh, "Design Analysis and Considerations of Power Efficient Electronic Speed Controller for Small-scale Quadcopter Unmanned Aerial Vehicle," IEEE CCWC 2018, Las Vegas, Jan 2018. (Undergraduate student project supervised)
  • Q. Wan, Y.K. Teh, P.K.T. Mok, “Design Analysis of a Reconfigurable TEG array for High Efficiency Thermoelectric Energy Harvesting,” 2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2016), Jeju, Korea, 25-28 Oct 2016. 
  • Y.K. Teh, P.K.T. Mok, “Design Consideration of Recent Advanced Low-Voltage CMOS Boost Converter for Energy Harvesting,” 22nd European Conference on Circuit Theory and Design, (ECCTD 2015), Trondheim, Norway, 24 - 26 Aug 2015.  (Invited paper)
  • Y.K. Teh, P.K.T. Mok, “A Bipolar Output Pulse Transformer Boost Converter with Charge Pump Assisted Shunt Regulator for Thermoelectric Energy Harvesting,” Proceedings of the 2014 IEEE 57th International Midwest Symposium on Circuits and Systems (MWSCAS 2014), College Station, Texas, USA, 3 - 6 Aug 2014.  (MWSCAS Best Student Paper)
  • Y.K. Teh, P.K.T. Mok, “A Dual Mode Thermoelectric Energy Harvesting Circuit Using Transformer-based Boost Converter, Charge Pump and Time-Domain Digital Control,” Proceedings of the 2014 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC 2014), Chengdu, China, 18 - 20 Jun 2014.
  • Y.K. Teh, P.K.T. Mok, “A Piezoelectric Energy Harvesting Interface Circuit Using One-Shot Pulse Transformer Boost Converter based on Water Bucket Fountain Strategy,” Proceedings of the 2014 IEEE International Symposium on Circuits and System (ISCAS 2014), Melbourne, Australia, 1 - 5 Jun 2014. (ISCAS Student Travel Grant Award)
  • Y.K. Teh, P.K.T. Mok, “Design of coupled inductor-based boost converter for ultra low power thermoelectric energy harvesting using pulse transformer with 75mV start-up voltage,” Proceedings of the 2013 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC 2013), Hong Kong, 3-5 Jun 2013. (Nominated for circuit track Best Student Paper)
  • J. Kim, C. Kim,  P.K.T. Mok, Y.K. Teh, “A low-voltage high-efficiency voltage doubler for thermoelectric energy harvesting,” Proceedings of the 2013 IEEE International Conference of Electron Devices and Solid-State Circuits (EDSSC 2013), Hong Kong, 3 – 5 Jun 2013.
  • A.M.H. Kwan, S. Song, X. Lu, L. Lu, Y.K. Teh, Y.F. Teh, E.W.C. Chong, Y.G.W. Hau, F. Zeng, M. Wong, C. Huang, T. Akira, M. Yoshihide, N. So, T. Toshiyuki, T. Osamu, “Designs for improving the performance of an electro-thermal in-plane actuator,” Proceedings of the 2011 IEEE/IFIP 19th International Conference on VLSI and System-on-Chip (VLSI-SoC), Hong Kong, 3 - 5 Oct 2011.
  • C.W. Peh, V.K. Wong, Y.K. Teh, “Development of an Indoor Environment Monitoring System with Secure Digital (SD) Card Storage,” Proceedings of the 2010 IEEE Conference on SusTainable Utilization and Development in ENgineering and Technology (STUDENT 2010), Petaling Jaya, Malaysia, 20 - 21 Nov 2010. (Undergraduate student project supervised)
  • Y.K. Teh, R. Sobot, “Progress in the VLSI Design of Wireless and Batteryless Biomedical System-on-Chip,” Proceedings of the 2009 International Symposium on Bioelectronics and Bioinformatics (ISBB 2009), Melbourne, Australia, 9 - 11 Dec 2009. (Canada Commonwealth Scholarship Travel Grant)
  • Y.K. Teh, F. Mohd-Yasin, F. Choong, M.B. Reaz, “Development of CMOS UHF RFID Modulator and Demodulator Using DTMOST Techniques,” Proceedings of the IEEE 8th International Conference on ASIC (IEEE ASICON 2009), Changsha, China, 20 – 23 Oct, 2009. (Excellent Student Paper award)
  • W.K. Loo, K.S. Tan, Y.K. Teh, “A Study and Design of CMOS H-Tree Clock Distribution Network in System-on-Chip,” Proceedings of the IEEE 8th International Conference on ASIC (IEEE ASICON 2009), Changsha, China, 20 – 23 Oct, 2009. (Undergraduate student project supervised)
  • Y.K. Teh, F.Mohd-Yasin, M.B.I.Reaz, A.Kordesch, “A VLSI Design Framework with Freeware CAD Tools,” Proceedings of the IEEE International Conference on Semiconductor Electronics (ICSE 2006), pp 901-905, Kuala Lumpur, Malaysia, 29 Nov - 1 Dec 2006.
  • M.K Khaw, F.Mohd-Yasin, Y.K.Teh, M.B.Reaz, “Implementation of Internal Mixed Signal ESD Protection onto RFID Transponder IC,” Proceedings of the IEEE International Conference on Semiconductor Electronics, pp 896-900, Kuala Lumpur, Malaysia, 29 Nov - 1 Dec 2006.
  • Y. K. Teh, W. K. Lam, M. K. Khaw, F. Mohd-Yasin, M. I. Reaz, M. S. Sulaiman, “The Design of Batteryless, TIRIS-Compliant RFID Transponder IC Employing TSMC 0.18um Process”, Proceedings of the IEEE International Conference on Semiconductor Electronics (ICSE 2004), Kuala Lumpur, Malaysia, pp 512-516, 7 - 9 Dec, 2004. (Undergraduate FYP project)

   Book / Book Chapter
  • Y.K. Teh, P.K.T. Mok, “Chapter 11 - Energy Harvesting,” Enabling the Internet of Things - from Circuits to Networks (Editor: Massimo Alioto),  Springer, Feb 2017. (Invited Book Chapter) 
  • Y.K. Teh, IC Design of CMOS UHF RFID Analog Front End: Circuit design techniques of CMOS UHF RFID AFE using Dynamic Threshold MOSFET, LAP Lambert Academic Publishing, Sep 2016 (ISBN: 978-3659939884). 
  • H.C. Ling, S.N. Cheong, Y.K. Teh, L.C. Kwek, J. Emerson Raja, V.M. Baskaran, B. Hashim, “C Programming for Beginners (2nd Edition),” Prentice Hall, Malaysia, Jun 2010. (ISBN:978-967-349-064-6).
  • H.C. Ling, S.N. Cheong, Y.K. Teh, L.C. Kwek, J. Emerson Raja, B. Hashim, “C Programming for Beginners,” Prentice Hall, Malaysia, Jun 2009. (ISBN:978-967-349-026-4).