MARIA THERESA G. DE LEON

Position: Professor; Deputy Director for Academic Programs
Laboratory Affiliation: Microelectronics and Microprocessors Laboratory
Room: 220B
Telephone Number: +63-2-89818500 loc 3301
Email: theresa.de.leon@eee.upd.edu.ph
Research Interests: Analog and RF integrated circuits, MEMS, microfabrication, energy harvesting
Educational Background:
PhD Electronic and Electrical Engineering, University of Southampton, 2014
Personal Homepage: UP MicroLab Faculty Page

Research Projects:
CIDR P2: Model-Driven Co-Design of MEMS-Based Sensors and Interface Circuits
Recent Publication/s:
Journal Publications
I.C. Fernandez, M.T. de Leon, A. Alvarez, J.R. Hizon, and M. Rosales, “Properties and Design of CMOS Thyristor Delay Elements,” Journal of Integrated Circuits and Systems, 17(1), pp. 1-7, April 2022.
P.M. Tingzon, H.A. Husay, N.I. Cabello, J.J. Eslit, K. Cook, J. Kapraun, A. Somintac, M.T. de Leon, M. Rosales, A. Salvador, C. Chang-Hasnain, and E. Estacio, “Indirect stress and air-cavity displacement measurement of MEMS tunable VCSELs via micro-Raman and micro-photoluminescence spectroscopy,” Semiconductor Science and Technology, vol. 37, no. 3, January 2022.
J. Manzano, M. Vasquez Jr., M. Rosales, and M.T. de Leon, “Characterization and Modeling of Surface Roughness on a Silicon/PZT Unimorph Cantilever using Finite Element Method,” Journal of Fluid Flow, Heat, and Mass Transfer, vol. 8, pp. 135-146, 2021.
F. A. R. Galapon, M.A. Agaton, A. Leynes, L.N. Noveno, A. Alvarez, C.V. Densing, J.R. Hizon, M. Rosales, M.T. De Leon, R.J. Maestro, “A 0 . 5 V Low-Power All-Digital Phase-Locked Loop in 65 nm Complementary Metal-Oxide-Semiconductor Process,” J. Low Power Electron., vol. 15, no. 1, pp. 64–75, 2019.
D. Grech, A. Tarazona, M.T. de Leon, K. Kiang, J. Zekonyte, R. Wood, and H. Chong, “A quasi-concertina force displacement MEMS probe for measuring biomechanical properties,” Sensors and Actuators A: Physical, vol. 275, pp 67-74, 2018.
D. Grech, A. Tarazona, M.T. de Leon, K. Kiang, J. Zekonyte, R. Wood, and H. Chong, “Large Gauge Factor of Hot
Conference Publications: A. Torreno, M.T. de Leon, M. Rosales, and A. Alvarez, “Power and Area Oriented Implementations of Lightweight Cryptographic Algorithms for Wireless Sensor Networks,“ IEEE Region 10 Conference (TENCON 2020), November 16-19, 2020, Online conference.
H. Benitez, M.T. de Leon, J. Hizon, and M. Rosales, “Performance Analysis of Multistage Cross-Coupled Rectifiers using Simulations on 65nm CMOS Process,” IEEE Wireless Power Week (WPW) 2022, July 5-8, 2022, Bordeaux, France.
S. Mindoro, J. Cabuyadao, A. Leynes, M. Ralota, Z. Sanchez, J. Hizon, M. Rosales, and M.T. de Leon, “A CMOS Power Management Unit with Undervoltage Lockout Circuit as Startup for Piezoelectric Energy Harvesting Applications,” International System-on-Chip Design Conference (ISOCC) 2021, October 6-9, 2021, Korea.
A. Leynes, J. Hizon, M.T. de Leon, and M. Rosales, “Asymmetric Charge Transfer Scheme Model in ML-SHHC with Consistent Power Extraction Improvement for Piezoelectric Energy Harvesters,” International System-on-Chip Design Conference (ISOCC) 2021, October 6-9, 2021, Korea.
I. Fernandez, M.T. de Leon, A. Alvarez, and M. Rosales, “An Energy-Efficient Temperature Sensor Using CMOS Thyristor Delay Elements,“ 32nd International Conference on Microelectronics (ICM2020), December 14-17, 2020, Virtual conference.
J. Eslit, M.T. de Leon, and M. Rosales, “High Contrast Gratings (HCG) MEMS-Tunable VCSEL Compact Model,“ 32nd International Conference on Microelectronics (ICM2020), December 14-17, 2020, Virtual conference. (First Place, Best Paper Award)
E. Arce, M.T. de Leon, M. Rosales, T. Yamaguchi, and M. Vasquez Jr, “Synthesis of Nanostructured Zinc Oxide Films,” 18th International Conference on Thin Films, November 22-26, 2020, Virtual conference.
M. Adonis, R. Forteza, A. Ramos, A. Alvarez, M.T. de Leon, J. Hizon, M. Sabino, C. Santos and M. Rosales, “FPGA-based Features Extraction Sensor for Lettuce Crop,“ IEEE Region 10 Conference (TENCON 2020), November 16-19, 2020, Online conference.
V. Baylosis, P. Chua, M. Neri, R. Ridao, A. Tan, M.T. de Leon, J. Hizon, M. Sabino, C. Santos, M. Rosales, and A. Alvarez, “Design and Implementation of a Pipelined RV32IMC Processor with Interrupt Support for Large-Scale Wireless Sensor Networks,“ IEEE Region 10 Conference (TENCON 2020), November 16-19, 2020, Online conference.
J. Manzano, M. Vasquez, M. Rosales, and M.T. de Leon, “Numerical Modeling of Surface Roughness Effects on the Natural Frequency of a Silicon Cantilever,“ International Conference on Energy Harvesting, Storage, and Transfer (EHST’20), November 15-17, 2020, Virtual conference.
C. Dia, R. Himor, A. Alvarez, J. Hizon, M. Rosales, M. Sabino, C. Santos and M.T. de Leon, “Interface for Shock Inputs in Piezoelectric Energy Harvesting using Synchronous Electric Charge Extraction,“ International System-on-Chip Design Conference (ISOCC) 2019, October 21-24, 2020, Korea.
A. Caburnay, J. Reyes, A. Alvarez, M.T. de Leon, J. Hizon, M. Rosales, C. Santos and M. Sabino, “Design Space Exploration of a 512KB STT-Assisted SOT MRAM Cache,“ International System-on-Chip Design Conference (ISOCC) 2019, October 21-24, 2020, Korea.
S. Quintans, F. Narcida, J. Tordesillas, A. Alvarez, M.T. de Leon, J. Hizon, M. Sabino, C. Santos and M. Rosales, “5 Gb/s Optical Transceiver for MEMS Tunable HCG-VCSEL in 65 nm CMOS,“ International System-on-Chip Design Conference (ISOCC) 2019, October 21-24, 2020, Korea.
R. Alsim, A. Alvarez, M.T. de Leon, M. Rosales, M. Sabino, C. Santos and J. Hizon, “A Top-Down Approach of a Low Noise Amplifier Design Using Verilog-A,“ International System-on-Chip Design Conference (ISOCC) 2019, October 21-24, 2020, Korea.
A. Ting, A. Alvarez, M.T. de Leon, J. Hizon, M. Rosales, M. Sabino, and C. Santos, “Designing a Class E Power Amplifier through Modeling in Verilog-A,“ International System-on-Chip Design Conference (ISOCC) 2019, October 21-24, 2020, Korea.
P. Panis, M. Ralota, J. Matanguihan, A. Alvarez, J. Hizon, M. Rosales, C. Santos and M.T. de Leon,” Design and Implementation of a Self-starting Thermal Energy Harvester with Resonant Startup and Maximum Power Point Tracking Capabilities for Wireless Sensor Nodes,“ International System-on-Chip Design Conference (ISOCC) 2019, October 6-9, 2019, Korea.
H. Benitez, C. Cabuso, M.T. de Leon, J. Hizon and M. Rosales,”An SDR-based WSN Testbed for RF Front End Simulation and Experimentation,“ International System-on-Chip Design Conference (ISOCC) 2019, October 6-9, 2019, Korea.
K. Juntado, D. Estarija, M. Panagsagan, A. Alvarez, M.T. de Leon, M. Rosales, C. Santos, and J. Hizon, “Design and Implementation of a Baseband LoRa Demodulator Using De-chirp Method,“ International Symposium on Multimedia and Communication Technology (ISMAC) 2019, August 19-21, 2019, Quezon City, Philippines.
J. Jamir, J. Roberto, J. Reyes, A. Alvarez, M.T. de Leon, M. Rosales, J. Hizon, and C. Santos, “Varying Resolution Pipelined ADC for Direct IF Sampling Receiver in Wireless Sensor Networks,“ International Symposium on Multimedia and Communication Technology (ISMAC) 2019, August 19-21, 2019, Quezon City, Philippines.
H. Benitez, C. Cabuso, M.T. de Leon, J. Hizon and M. Rosales, “Implementation of a Physical Layer Wireless Sensor Network Testbed Using Software Defined Radios,“ International Symposium on Multimedia and Communication Technology (ISMAC) 2019, August 19-21, 2019, Quezon City, Philippines.
Y. Macayana, V. Coronel, I. Fernandez, K. Ung, C. Miras, C. Densing, D. Ong, I. Austria, M. Talampas, N. Tiglao, M.T. de Leon, P. Magpantay, and M. Rosales, “Implementation of 6LoWPAN and Controller Area Network for a Smart Hydroponics System,“ in 2019 Global IoT Summit, June 17-21, 2019, Aarhus, Denmark.
G. Evidente, S. Mindoro, A. Alvarez, C. Densing, R. Maestro, M. Rosales, and M.T. de Leon, “An Ultra-Low Power Direct Active-RF Detection Wake-Up Receiver with Noise-Cancelling Envelope Detector in 65 nm CMOS Process” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
G. Cabrera, J. Credo, G. Evidente, R. Malatbalat, S. Mindoro, A. Sanico, A. Alvarez, C. Densing, R. Maestro, M. Rosales, and M.T. de Leon, “A 2.4 GHz Energy-efficient Short-range Receiver with Wake-up and Multiple Gain Settings for Wireless Sensor Networks” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
K. Yu, R. Maestro, and M.T. de Leon, “A Study on the Effectiveness of Using a Hybrid Topology in Improving the Power Efficiency and Voltage Regulation over a Wide Input Range of DC-DC Converters” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
A. Balde, J. Cabuyadao, C. Densing, J. Hizon, M. Rosales, R. Maestro, and M.T. de Leon, “Low Power Converter for Capacitive Sensors Using Capacitance-to-Pulse Width Modulation” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
Antenor, K. Campang, K. Rafols, A. Alvarez, M.T. de Leon, C. Densing, R. Maestro, and M. Rosales, “Design and Implementation of a Thermoelectric Energy Harvesting Interface Circuit with Maximum Power Point Tracking and Self-Startup Capability for Wireless Sensor Nodes” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
F. Galapon, M. Agaton, A. Leynes, L. Noveno, A. Alvarez, C. Densing, J. Hizon, M. Rosales, M.T. de Leon, and R. Maestro, “A 0.5V Low-Power All-Digital Phase-Locked Loop in 65Nm CMOS Process for Wireless Sensing Applications” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
N. Cabigao, M. Gonzaga, H. Laure, M.T. de Leon, J. Hizon, M. Rosales, A. Alvarez, and C. Densing, “Design of Multiple Prediction Complexity Configurations for an FPGA-Based H.264 Baseline Profile Encoder” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
U. Agub, J. Aquino, J. Beano, R. Monsayac, A. Alvarez, M.T. de Leon, C. Densing, J. Hizon, R. Maestro, and M. Rosales, “A Study on Coarse Stage Bit Allocation to Improve Power Efficiency of a 10-Bit Coarse-Fine SAR ADC Implemented in 65 nm CMOS Process for Environmental Sensing Applications” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
Z. Sanchez, S. Vasquez, J. Hizon, R. Maestro, M.T. de Leon, and M. Rosales, “A gm/ID Based Algorithm for the Design of CMOS Miller Operational Amplifiers in 65 nm Technology” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
G. Manarang, R. Mina, M. Salvador, M.T. de Leon, M. Rosales, C. Densing, and A. Alvarez, “Hardware-Based Model of Node Clustering Using Q-Learning for Wireless Sensor Networks” in IEEE TENCON 2018, October 28-31, 2018, Jeju, Korea.
F. Galapon, M. Agaton, A. Leynes, L. Noveno, A. Alvarez, C. Densing, J. Hizon, M. Rosales, M.T. de Leon, and R. Maestro, “Power Optimization of a 0.5V 0.286-to-18MHz ADPLL in 65nm CMOS Process” in NGCAS 2018, November 20, 2018, Malta.

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