Bio

Ada was born and raised in Hong Kong. She received her B.Eng degree from the EEE department at the University of Hong Kong and her Ph.D. degree from the EECS department at the University of California at Berkeley in 2004. Her dissertation attempted to connect information theory with electromagnetic theory so as to better understand the fundamental limit of wireless channels

Upon graduation, she spent one year at Intel as a senior research scientist building reconfigurable baseband processors for flexible radios. Afterwards, she joined her advisor’s startup company, SiBeam Inc., architecting Gigabit wireless transceivers leveraging 60 GHz CMOS and MIMO antenna systems. After two years in industries, she returned to academic and joined the faculty of the ECE department at the University of Illinois, Urbana-Champaign. Since then, she has changed her research direction from wireless communications to integrated biomedical systems. In 2008, she moved back to California and joined the faculty of the Department of Electrical Engineering at Stanford University. She is a Terman Fellow at Stanford University.

Academic Appointments

Honors & Awards

  • Research Grant recipient, Okawa Foundation (2010)
  • CAREER Award, NSF (2013)

Professional Education

  • PhD, UC Berkeley, Electrical Engineering (2004)
  • MS, UC Berkeley, Electrical Engineering (1999)
  • MPhil, University of Hong Kong, Electrical and Electronic Engineering (1997)
  • BEng, University of Hong Kong, Electrical and Electronic Engineering (1996)

Contact

Links

Current Research and Scholarly Interests

Our research focuses on providing theoretical foundations and engineering platforms for realizing electronics that seamlessly integrate with the body. Such systems will allow precise recording or modulation of physiological activity, for advancing basic scientific discovery and for restoring or augmenting biological functions for clinical applications. To build these integrated biomedical systems, our research program emphasizes a vertical integration of diverse fields ranging from physics, wireless technologies, and low-power integrated circuits. In close collaboration with biologists and clinical specialists, we validate our systems in animal models and prepare the testing of the systems in humans.

Projects

  • Wireless neuromodulation platforms, Stanford University

    Optical or electrical stimulation of neural circuits in mice during natural behavior is an important paradigm for studying brain function. Conventional systems for optogenetics and electrical stimulation require tethers or large head-mounted devices that disrupt animal behavior. Our research focuses on developing new wireless tools for activity modulation and recording in both the brain and the periphery. Targeted technologies include wireless platforms for experiments in freely-moving animals and tiny, fully-implantable devices for controlled delivery of light or electrical pulses.

    Location

    Stanford, CA

    Collaborators

    • Scott Delp, James H. Clark Professor in the School of Engineering, Professor of Bioengineering, of Mechanical Engineering and, by courtesy, of Orthopaedic Surgery, Stanford University
    • Karl Deisseroth, D. H. Chen Professor, Professor of Bioengineering and of Psychiatry and of Behavioral Sciences, Stanford University
  • Metasurfaces, Stanford University

    The solid immersion lens is a powerful optical tool that allows light entering material from air or vacuum to focus to a spot much smaller than the free-space wavelength. Conventionally, however, they rely on semispherical topographies and are non-planar and bulky, which limits their integration in many applications. Recently, there has been considerable interest in using planar structures, referred to as metasurfaces, to construct flat optical components for manipulating light in unusual ways. Here, we propose and demonstrate the concept of a planar immersion lens based on metasurfaces. The resulting planar device, when placed near an interface between air and dielectric material, can focus electromagnetic radiation incident from air to a spot in material smaller than the free-space wavelength.

    Location

    Stanford, CA

    Collaborators

    • Shanhui Fan, Professor of Electrical Engineering and, by courtesy, of Applied Physics, Stanford University
  • Development of wireless powered miniature pacing devices for cardiac rhythm management (無線微型心臟起搏器的研發與應用)

    While advances in miniaturization has paved way for tiny cardiac implantable electronic devices (CIEDs) that circumvent conventional surgical implantation, there is still lack of effective method for powering them deep in the body. Existing methods for energy storage, harvesting, or transfer, such as ultrasound or electromagnetic energy require large components that do not scale to millimeter dimensions. At Stanford University, we report a new wireless power transfer method that overcomes this challenge and use it to realize a tiny electrostimulator that is orders of magnitude smaller than conventional pacemakers. The objective of this project is to perform pre-clinical studies in Hong Kong evaluating this new way of powering cardiac pacemaker. This project is funded by ITF, the Government of the Hong Kong Special Administrative Region.

    Location

    Hong Kong

  • Wireless power transfer to microimplants, Stanford University

    Medical electronics are capable of precisely monitoring or modulating activity in the human body, and thus hold promise for treating a broad range of diseases. To implant electronic devices in the body, they need to be miniaturized and powered wirelessly across complex biological tissue. We are developing a new method of electromagnetic energy transfer, termed midfield powering, to power devices at the scale of a millimeter or less anywhere in the body, including the heart and the brain. Our approach spans fundamental studies of wave-tissue interactions, development of new electromagnetic structures, and experiments in both computational and animal tissue models.

    Location

    Stanford, CA

    Collaborators

    • Ramin Beygui, Professor of Cardiothoracic Surgery, Stanford University

2015-16 Courses

All Publications

  • Wirelessly powered, fully internal optogenetics for brain, spinal and peripheral circuits in mice. Nature methods Montgomery, K. L., Yeh, A. J., Ho, J. S., Tsao, V., Mohan Iyer, S., Grosenick, L., Ferenczi, E. A., Tanabe, Y., Deisseroth, K., Delp, S. L., Poon, A. S. 2015; 12 (10): 969-974

    Abstract

    To enable sophisticated optogenetic manipulation of neural circuits throughout the nervous system with limited disruption of animal behavior, light-delivery systems beyond fiber optic tethering and large, head-mounted wireless receivers are desirable. We report the development of an easy-to-construct, implantable wireless optogenetic device. Our smallest version (20 mg, 10 mm(3)) is two orders of magnitude smaller than previously reported wireless optogenetic systems, allowing the entire device to be implanted subcutaneously. With a radio-frequency (RF) power source and controller, this implant produces sufficient light power for optogenetic stimulation with minimal tissue heating (<1 °C). We show how three adaptations of the implant allow for untethered optogenetic control throughout the nervous system (brain, spinal cord and peripheral nerve endings) of behaving mice. This technology opens the door for optogenetic experiments in which animals are able to behave naturally with optogenetic manipulation of both central and peripheral targets.

    View details for DOI 10.1038/nmeth.3536

    View details for PubMedID 26280330

  • Self-Tracking Energy Transfer for Neural Stimulation in Untethered Mice PHYSICAL REVIEW APPLIED Ho, J. S., Tanabe, Y., Iyer, S. M., Christensen, A. J., Grosenick, L., Deisseroth, K., Delp, S. L., Poon, A. S. 2015; 4 (2)

    View details for DOI 10.1103/PhysRevApplied.4.024001

    View details for Web of Science ID 000358939400001

  • An Energy Harvesting 2 x 2 60 GHz Transceiver With Scalable Data Rate of 38-2450 Mb/s for Near-Range Communication IEEE JOURNAL OF SOLID-STATE CIRCUITS Taghivand, M., Aggarwal, K., Rajavi, Y., Poon, A. S. 2015; 50 (8): 1889-1902

    View details for DOI 10.1109/JSSC.2015.2429716

    View details for Web of Science ID 000358618500014

  • INDUCTIVE POWER TRANSFER AND FAR-FIELD RADIATION WITH SMALL DUAL-BAND ANTENNAS MICROWAVE AND OPTICAL TECHNOLOGY LETTERS Chang, T., Tanabe, Y., Tan, B., Poon, A. 2015; 57 (5)

    View details for DOI 10.1002/mop.29014

    View details for Web of Science ID 000351835800008

  • Planar immersion lens with metasurfaces PHYSICAL REVIEW B Ho, J. S., Qiu, B., Tanabe, Y., Yeh, A. J., Fan, S., Poon, A. S. 2015; 91 (12)

    View details for DOI 10.1103/PhysRevB.91.125145

    View details for Web of Science ID 000352196700006

  • Midfield Wireless Power Transfer for Bioelectronics IEEE CIRCUITS AND SYSTEMS MAGAZINE Ma, A., Poon, A. S. 2015; 15 (2): 54-60

    View details for DOI 10.1109/MCAS.2015.2418999

    View details for Web of Science ID 000354858000006

  • Wireless power transfer to deep-tissue microimplants PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Ho, J. S., Yeh, A. J., Neofytou, E., Kim, S., Tanabe, Y., Patlolla, B., Beygui, R. E., Poon, A. S. 2014; 111 (22): 7974-7979

    Abstract

    The ability to implant electronic systems in the human body has led to many medical advances. Progress in semiconductor technology paved the way for devices at the scale of a millimeter or less ("microimplants"), but the miniaturization of the power source remains challenging. Although wireless powering has been demonstrated, energy transfer beyond superficial depths in tissue has so far been limited by large coils (at least a centimeter in diameter) unsuitable for a microimplant. Here, we show that this limitation can be overcome by a method, termed midfield powering, to create a high-energy density region deep in tissue inside of which the power-harvesting structure can be made extremely small. Unlike conventional near-field (inductively coupled) coils, for which coupling is limited by exponential field decay, a patterned metal plate is used to induce spatially confined and adaptive energy transport through propagating modes in tissue. We use this method to power a microimplant (2 mm, 70 mg) capable of closed-chest wireless control of the heart that is orders of magnitude smaller than conventional pacemakers. With exposure levels below human safety thresholds, milliwatt levels of power can be transferred to a deep-tissue (>5 cm) microimplant for both complex electronic function and physiological stimulation. The approach developed here should enable new generations of implantable systems that can be integrated into the body at minimal cost and risk.

    View details for DOI 10.1073/pnas.1403002111

    View details for Web of Science ID 000336687900037

    View details for PubMedID 24843161

  • A Small Dual-Band Asymmetric Dipole Antenna for 13.56 MHz Power and 2.45 GHz Data Transmission IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS Tanabe, Y., Chang, T., Yeh, A. J., Poon, A. S. 2014; 13: 1120-1123

    View details for DOI 10.1109/LAWP.2014.2330496

    View details for Web of Science ID 000338355700004

  • A 3.24-to-8.45GHz Low-Phase-Noise Mode-Switching Oscillator 2014 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE DIGEST OF TECHNICAL PAPERS (ISSCC) Taghivand, M., Aggarwal, K., Poon, A. S. 2014; 57: 368-?

    View details for Web of Science ID 000353615000151

  • Energy Transfer for Implantable Electronics in the Electromagnetic Midfield PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER Ho, J. S., Poon, A. S. 2014; 148: 151-158

    View details for DOI 10.2528/PIER14070603

    View details for Web of Science ID 000346151100013

  • A General Solution to Wireless Power Transfer between Two Circular Loops PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER Poon, A. S. 2014; 148: 171-182

    View details for DOI 10.2528/PIER14071201

    View details for Web of Science ID 000346151100015

  • An Energy Harvesting 2x2 60GHz Transceiver with Scalable Data Rate of 38-to-2450Mb/s for Near Range Communication 2014 IEEE PROCEEDINGS OF THE CUSTOM INTEGRATED CIRCUITS CONFERENCE (CICC) Taghivand, M., Rajavi, Y., Aggarwal, K., Poon, A. S. 2014

    View details for Web of Science ID 000349122300081

  • Wirelessly powering miniature implants for optogenetic stimulation APPLIED PHYSICS LETTERS Yeh, A. J., Ho, J. S., Tanabe, Y., Neofytou, E., Beygui, R. E., Poon, A. S. 2013; 103 (16)

    View details for DOI 10.1063/1.4825272

    View details for Web of Science ID 000326148700092

  • Mass fabrication and delivery of 3D multilayer mu Tags into living cells SCIENTIFIC REPORTS Chen, L. Y., Parizi, K. B., Kosuge, H., Milaninia, K. M., McConnell, M. V., Wong, H. P., Poon, A. S. 2013; 3

    View details for DOI 10.1038/srep02295

    View details for Web of Science ID 000322308900002

  • Midfield Wireless Powering for Implantable Systems PROCEEDINGS OF THE IEEE Ho, J. S., Kim, S., Poon, A. S. 2013; 101 (6): 1369-1378

    View details for DOI 10.1109/JPROC.2013.2251851

    View details for Web of Science ID 000319147000011

  • Midfield Wireless Powering of Subwavelength Autonomous Devices PHYSICAL REVIEW LETTERS Kim, S., Ho, J. S., Poon, A. S. 2013; 110 (20)

    View details for DOI 10.1103/PhysRevLett.110.203905

    View details for Web of Science ID 000319214800003

  • Mass fabrication and delivery of 3D multilayer µTags into living cells. Scientific reports Chen, L. Y., Parizi, K. B., Kosuge, H., Milaninia, K. M., McConnell, M. V., Wong, H. P., Poon, A. S. 2013; 3: 2295-?

    Abstract

    Continuous monitoring of in vivo biological processes and their evolution at the cellular level would enable major advances in our understanding of biology and disease. As a stepping stone towards chronic cellular monitoring, we demonstrate massively parallel fabrication and delivery of 3D multilayer micro-Tags (μTags) into living cells. Both 10 μm × 10 μm × 1.5 μm and 18 μm × 7 μm × 1.5 μm devices containing inductive and capacitive structures were designed and fabricated as potential passive radio-frequency identification tags. We show cellular internalization and persistence of μTags over a 5-day period. Our results represent a promising advance in technologies for studying biology and disease at the cellular level.

    View details for DOI 10.1038/srep02295

    View details for PubMedID 23887586

  • A 11 mu W Sub-pJ/bit Reconfigurable Transceiver for mm-Sized Wireless Implants 2013 IEEE CUSTOM INTEGRATED CIRCUITS CONFERENCE (CICC) Yakovlev, A., Jang, J., Pivonka, D., Poon, A. 2013

    View details for Web of Science ID 000350887800100

  • Emerging wireless applications in biomedicine 2013 5TH IEEE INTERNATIONAL WORKSHOP ON ADVANCES IN SENSORS AND INTERFACES (IWASI) Poon, A. 2013: 35-35

    View details for Web of Science ID 000333521100009

  • A mm-Sized Wirelessly Powered and Remotely Controlled Locomotive Implant IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS Pivonka, D., Yakovlev, A., Poon, A. S., Meng, T. 2012; 6 (6): 523-532

    View details for DOI 10.1109/TBCAS.2012.2232665

    View details for Web of Science ID 000313907800002

  • Wireless Power Transfer to Miniature Implants: Transmitter Optimization IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION Kim, S., Ho, J. S., Poon, A. S. 2012; 60 (10): 4838-4845

    View details for DOI 10.1109/TAP.2012.2207341

    View details for Web of Science ID 000309742400041

  • Wireless power transfer to a cardiac implant APPLIED PHYSICS LETTERS Kim, S., Ho, J. S., Chen, L. Y., Poon, A. S. 2012; 101 (7)

    View details for DOI 10.1063/1.4745600

    View details for Web of Science ID 000308263100081

  • Supporting and Enabling Circuits for Antenna Arrays in Wireless Communications PROCEEDINGS OF THE IEEE Poon, A. S., Taghivand, M. 2012; 100 (7): 2207-2218

    View details for DOI 10.1109/JPROC.2012.2186949

    View details for Web of Science ID 000305621300011

  • Implantable Biomedical Devices: Wireless Powering and Communication IEEE COMMUNICATIONS MAGAZINE Yakovlev, A., Kim, S., Poon, A. 2012; 50 (4): 152-159

    View details for Web of Science ID 000302637000021

  • Exceeding Nernst Limit (59mV/pH): CMOS-Based pH Sensor for Autonomous Applications 2012 IEEE INTERNATIONAL ELECTRON DEVICES MEETING (IEDM) Parizi, K. B., Yeh, A. J., Poon, A. S., Wong, H. S. 2012

    View details for Web of Science ID 000320615600141

  • Electromagnetic field focusing for short-range wireless power transmission IEEE Radio and Wireless Symposium (RWS) Poon, A. 2012
  • Beam focused slot antenna for microstrip implants Tanabe, Y., Wong, H., Kim, S., Ho, J., S., Poon, A., S. Y. 2012
  • A mm-sized wireless powered and remotely controlled locomotive implant IEEE Trans. Biomedical Circuits and Systems Pivonka, D., Yakovlev, A., Poon, A., Meng, T. 2012; 6 (6): 523-532
  • Wireless Powering of Microchip Implants by a Cross-Slot Antenna 2012 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC 2012) Tanabe, Y., Ho, J. S., Wong, H., Poon, A. S. 2012: 418-420

    View details for Web of Science ID 000319213700140

  • Degree-of-Freedom Gain From Using Polarimetric Antenna Elements IEEE TRANSACTIONS ON INFORMATION THEORY Poon, A. S., Tse, D. N. 2011; 57 (9): 5695-5709

    View details for DOI 10.1109/TIT.2011.2161952

    View details for Web of Science ID 000295738800009

  • Detecting Human Blockage and Device Movement in mmWave Communication System 2011 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE (GLOBECOM 2011) Tsang, Y. M., Poon, A. S. 2011

    View details for Web of Science ID 000300509005010

  • Successive AoA estimation: revealing the second path for 60 GHz communication system Allerton Conference Tsang, Y. M., Poon 2011
  • Future implantable systems Poon, A., S. Y. 2011
  • Wireless communication device using adaptive beamforming Poon, A., S. Y. 2011
  • A 60GHz digitally controlled RF beamforming array in 65nm CMOS with off-chip antennas Lin, S., Ng, K., B., Wong, H., Luk, L., M., Wong, S., S., Poon, A., S. Y. 2011
  • Coding the Beams: Improving Beamforming Training in mmWave Communication System 2011 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE (GLOBECOM 2011) Tsang, Y. M., Poon, A. S., Addepalli, S. 2011

    View details for Web of Science ID 000300509005050

  • Optimal Transmit Dimension for Wireless Powering of Miniature Implants 2011 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (APSURSI) Kim, S., Poon, A. S. 2011: 408-411

    View details for Web of Science ID 000297298500107

  • A Four-Channel Beamforming Down-Converter in 90-nm CMOS Utilizing Phase-Oversampling Tseng, R., Li, H., Kwon, D. H., Chiu, Y., Poon, A. S. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2010: 2262-2272

    View details for DOI 10.1109/JSSC.2010.2063971

    View details for Web of Science ID 000283442500006

  • Optimal Frequency for Wireless Power Transmission Into Dispersive Tissue IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION Poon, A. S., O'Driscoll, S., Meng, T. H. 2010; 58 (5): 1739-1750

    View details for DOI 10.1109/TAP.2010.2044310

    View details for Web of Science ID 000277339900033

  • Degree-of-Freedom Gain from Polarimetric Antenna Elements 2010 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM Poon, A. S. 2010

    View details for Web of Science ID 000287212402207

  • Fast beam training for mmWave communication system: from algorithm to circuits ACM international workshop on mmWave communications: from circuits to networks Tsang, Y. M. 2010
  • Optimizations of Source Distribution in Wireless Power Transmission for Implantable Devices 2010 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM Kim, S., Poon, A. S. 2010

    View details for Web of Science ID 000287212401174

  • Translating Electromagnetic Torque into Controlled Motion for use in Medical Implants 2010 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) Pivonka, D., Meng, T., Poon, A. 2010: 6433-6436

    Abstract

    A new propulsion method for sub-millimeter implants is presented that achieves high power to thrust conversion efficiency with a simple implementation. Previous research has shown that electromagnetic forces are a promising micro-scale propulsion mechanism; however the actual implementation is challenging due to the inherent symmetry of these forces. The presented technique translates torque into controlled motion via asymmetries in resistance forces, such as fluid drag. For a 1-mm sized object using this technique, the initial analysis predicts that speeds of 1 cm/sec can be achieved with approximately 100 µW of power, which is about 10 times more efficient than existing methods. In addition to better performance, this method is easily controllable and has favorable scalability.

    View details for Web of Science ID 000287964006208

    View details for PubMedID 21096711

  • Miniaturization of Implantable Wireless Power Receiver 2009 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-20 Poon, A. S. 2009: 3217-3220

    Abstract

    Implantable medical devices will play an important role in modern medicine. To reduce the risk of wire snapping, and replacement and corrosion of embedded batteries, wireless delivery of energy to these devices is desirable. However, current autonomous implants remain large in scale due to the operation at very low frequency and the use of unwieldy size of antennas. This paper will show that the optimal frequency is about 2 orders of magnitude higher than the conventional wisdom; and thereby the power receiving coils can be reduced by more than 100 fold without sacrificing either power efficiency or range. We will show that a mm-sized implant can receive 100's microW of power under safety constraints. This level of power transfer is sufficient to enable many functionalities into the micro-implants for clinical applications.

    View details for Web of Science ID 000280543602168

    View details for PubMedID 19964059

  • An inherently linear phase-oversampling vector modulator in 90-nm CMOS Tseng, R., Li, H., Kwon, D., H., Poon, A., S. Y., Chiu, Y. 2009
  • A mm-sized implantable wireless power receiver Poon, A., S. Y. 2009
  • A mm-sized implantable power receiver with adaptive link compensation O’Driscoll, S., Poon, A., S. Y., Meng, T., H. 2009
  • Locomotive Micro-Implant with Active Electromagnetic Propulsion 2009 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-20 Pivonka, D., Poon, A. S., Meng, T. H. 2009: 6404-6407

    Abstract

    An active locomotive technique requiring only an external power source and a static magnetic field is presented, and its operation is analyzed and simulated. For a modest static MRI magnetic field of 1 T, the results show that a 1-mm cube achieves roughly 3 cm/sec of lateral motion using less than 20.4 microW of power. Current-carrying wires generate the forces, resulting in highly controllable motion. Existing solutions trade off size and power: passive solutions are small but impractical, and mechanical solutions are inefficient and large. The presented solution captures the advantages of both systems, and has much better scalability.

    View details for Web of Science ID 000280543605057

    View details for PubMedID 19964695

  • A mixed-signal vector modulator for eigen-beamforming receivers IEEE Trans. Circuits and Systems II Tseng, R., Poon, A., S. Y., Chiu, Y. 2008; 55 (5): 479–483
  • Polarization degrees of freedom Poon, A., S. Y., Tse, D., N. C. 2008
  • Non-robustness of statistics-based beamformer design in correlated design in correlated MIMO channels Raghavan, V., Poon, A., Veeravalli, V. 2008
  • Angular domain processing for MIMO wireless systems with non-uniform antenna arrays Huang, D., Raghavan, V., Poon, A., Veeravalli, V. 2008
  • A mixed-signal MIMO beamforming receiver Tseng, R., Poon, A., S. Y., Chiu, Y. 2008
  • Optimal operating frequency in wireless power transmission for implantable devices 2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16 Poon, A. S., O'Driscoll, S., Meng, T. H. 2007: 5674-5679

    Abstract

    This paper examines short-range wireless powering for implantable devices and shows that existing analysis techniques are not adequate to conclude the characteristics of power transfer efficiency over a wide frequency range. It shows, theoretically and experimentally, that the optimal frequency for power transmission in biological media can be in the GHz-range while existing solutions exclusively focus on the MHz-range. This implies that the size of the receive coil can be reduced by 10(4) times which enables the realization of fully integrated implantable devices.

    View details for Web of Science ID 000253467004156

    View details for PubMedID 18003300

  • Angular domain signal processing techniques Poon, A., S. Y. 2007
  • An energy-efficient reconfigurable baseband processor for wireless communications IEEE Trans. VLSI Systems Poon, A., S. Y. 2007; 15 (3): 319–327
  • MIMO systems with arbitrary antenna array architectures: channel modeling, capacity, and low-complexity signaling Raghavan, V., Poon, A., Veeravalli, V. 2007
  • Deterministic spatial power allocation and bit loading for closed loop MIMO Poon, A., S. Y. 2006
  • An energy-efficient reconfigurable baseband processor for flexible radios Poon, A., S. Y. 2006
  • Technique to increase a code rate in a MIMO system using virtual channels Poon, A., S. Y. 2006
  • Method and system for closed loop transmit beamforming in MIMO systems with limited feedback Poon, A., S. Y. 2006
  • Link adaptation for MIMO transmission schemes Poon, A., S. Y. 2006
  • Impact of scattering on the capacity, diversity, and propagation range of multiple-antenna channels IEEE Trans. Information Theory Poon, A., S. Y., Tse, D., N. C., Brodersen, R., W. 2006; 52 (3): 1087–1100
  • Determining spatial power allocation and bit loading for a MIMO OFDM system without feedback information about the channel Poon, A., S. Y. 2006
  • Code rate adaptation in a MIMO system using virtual channels Poon, A., S. Y. 2006
  • Closed loop MIMO systems using codebooks for feedback Poon, A., S. Y. 2006
  • Closed loop feedback in MIMO systems Poon, A., S. Y. 2006
  • Bit distributor for multicarrier communication systems employing adaptive bit loading for multiple spatial streams and methods Poon, A., S. Y. 2006
  • Apparatus and method to form a transform Poon, A., S. Y. 2006
  • Adaptive bit loading for multicarrier communication system Poon, A., S. Y. 2006
  • Spatial puncturing apparatus, method, and system Poon, A., S. Y. 2005
  • Degrees of freedom in multiple-antenna channels: a signal space approach IEEE Trans. Information Theory Poon, A., S. Y., Brodersen, R., W., Tse, D., N. C. 2005; 51 (2): 523–536
  • Compact feedback for closed loop MIMO systems Poon, A., S. Y. 2005
  • Spatial channel models for multiple-antenna systems Poon, A., S. Y., Tse, D., N. C., Brodersen, R., W. 2004
  • An adaptive multi-antenna transceiver for slowly flat-fading channels IEEE Trans. Communications Poon, A., S. Y., Tse, D., N. C., Brodersen, R., W. 2003; 51 (11): 1820–1827
  • Indoor multiple-antenna channel characterization from 2 to 8 GHz Poon, A., S. Y., Ho, M. 2003
  • Multiple-antenna channels from a combined physical and networking perspective Poon, A., S. Y., Tse, D., N. C., Brodersen, R., W. 2002
  • The signal dimensions in multiple-antenna channels Poon, A., S. Y., Tse, D., N. C., Brodersen, R., W. 2002
  • Game theoretical multi-agent modelling of coalition formation for multilateral trades IEEE TRANSACTIONS ON POWER SYSTEMS Yeung, C. S., Poon, A. S., Wu, F. F. 1999; 14 (3): 929-934

    View details for Web of Science ID 000081712900031

  • Trade-offs of performance and single chip implementation of indoor wireless multi-access receivers Zhang, N., Poon, A., S. Y., Tse, D., N. C., Brodersen, R., W., Verdu, S. 1999
  • A multi-agent approach to the deregulation and restructuring of power industry Poon, A., S. Y., Wu, F., F., Yeung, C., S. K., Yen, J. 1998