AWARDS
GRANTS
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• PI: Integrated Sensing and
Communication RF Circuit Techniques, $1,007,495, 28 December 2023 to 27
December 2027, Industry. • PI:
Terahertz-to-Imaging Integrated Circuit for Security and Health: MOE AcRF
Tier 2/ CMOS (T2EP50123-0022), S$704,340, 1 February 2024 to 31 January 2028. • PI:
Testing and design methodology on element design applicable for beyond-5G/6G
smart drone communication systems: Keysight Technologies Singapore (Sales),
S$900,000 (in-kind), 16 September 2022 to 15 August 2024, Keysight
Technologies Singapore (Industry). PI: CMOS Terahertz Plasmonic Interconnect towards Tera-scale
Computing, $788,736, 28 January 2020 to 27 January 2023, AcRF Tier 2 MOE,
MOE2019-T2-1-114. PI: Keysight Technologies Singapore – NTU Joint R&D:
Transceiver test and development applicable for V2X-System and mmW, S$1,783.750 (including testing
in-kind), 22 January 2020 to 21 January 2023, Keysight Technologies Singapore
(Industry). PI: WP1: Transceiver Development Applicable for Hybrid
“C-V2X+DSRC” V2X-System, S$2,889.900, 1 November 2019 to 31 October 2022,
A*STAR (STAT Board), SERC A19D6a0053. PI: LEES III-V + CMOS Circuits & System towards
Commercialization, 1 July 2019 to 31 December 2021,
LEES-SMART-IRG (SMART No. II-16 LEES IRG), Phase II. PI: Industry: Wireless
Heterogeneous Network Transceiver Chipset for Content-Driven Transmission of
Learning Media (SLE-RP3) Research Area (SLE), 1st
July 2016 to 30th June 2021. PI: Monolithic Terahertz
Passive Components in Advanced CMOS Technology: From Fundamental
Understandings to Integrated Circuit Applications, 1st November 2016 to 31st October 2018. PI: Industry: Circuit Design for GaN Based DC-DC Converter Power, 1st June 2016 to 31st
December 2018.. Industry: An Integrated Platform Approach Towards Non-Invasive Continuous
Blood Glucose Monitoring Addressing Clinical Need for Early Diagnosis and
Improved Compliance, 1st July 2016 to 30th July 2018. PI:
Industrial Grant (Fortune 500 Company) 10GiFi research & development of
ultra-wideband RF transceiver, S$927,840.00,
15th July 2014 to 14th July 201. PI: High Thermal Resolution
Ultra-Low Power Integrated Imager: Fund. Issues in CMOS,
$840,000, July 2013 to June 2016, AcRF
Tier 2 MOE. PI:
Project 2: Electronic Circuit Design, Communication, S$391,560, April. 2012
to March 2013, LEES-SMART-IRG. PI: Project 2: Electronic
Circuit Design, Communication, S$376,200, April. 2013 to March 2014, LEES- SMART-IRG. Due to his
excellent work and performance, he was again awarded this subcontract. PI: Project 2: Electronic
Circuit Design, Communication, S$836,400, April. 2014 to March 2016,
LEES-SMART-IRG. Recently, due to the
outstanding feedback on Jan 2014 LEES Annual Review Meeting, he was further
awarded a large subcontract amount of S$836,400 as PI under the “Low Energy
Electronic Systems” from April 2014 to March 2016. LEES Annual Review Meeting
is attended by all the PIs and Scientific Advisory Board (SAB) members which
include Prof.
Timothy David Sands who was recently appointed as President of Virginia Tech,
USA. PI: Ultra-low Power Fully Integrated
CMOS 24GHz Receiver, $0.323mil, March 2008 to February 2011, AcRF
Tier 1 MOE. PI: Batteryless
Flexible Transceiver for Biomedical Applications, $1,186,270 including
scholarships), May 2009 to April 2012, AcRF
Tier 2 MOE. Co-PI: An Ultra Low-Power
RFIC Chip For
Wireless and Communication Applications S$1.2 mil, March 2006 to February
2009, funded by Agency for Science, Technology and Research (A*STAR). Co-PI: System-on-chip: Realization of
Software Radio, S$0.3 mil, 3 December 2008 to 2 December 2009, University of
Electronic Science and Technology (UEST) of China-NTU Joint R&D, jointly
funded by UEST and NTU. Co-PI: An Ultra Low-Power
RF Transceiver Chip towards a New Paradigm of Life Quality, S$0.25 mil, 3
December 2008 to 2 December 2009, NRF. Key Collaborator: “Low Energy Electronic Systems” which has won the Singapore-MIT Alliance for
Research and Technology (SMART) International Research Grant (IRG) proposal
with a grant total of S$25million. Research Interest · Below is the brief description of my major
research accomplishments and related papers: · (1) Green RFIC. · In this research, I recognized that the
rapid scaling of Si technology has brought the technology to the point where
various fundamental physical phenomena are beginning to impede the path to
further progress. One of the main problems is due to power dissipation and
the temperature rise associated with very high power densities. An
ultra-low power consumption transceiver makes sense as transceiver is
traditionally power hungry. In fact, power consumption relates to the
mobility, marketability, functionality and cost of a wireless device
(transceiver). It is obvious that the development of ultra-low power
consumption transceiver is of extreme importance. · An example of my work in this area is the ultra low-power voltage-controlled oscillator (VCO)
design. In a conventional VCO design, high current is injected into the
circuit to achieve good phase noise performance which is critical to the
performance of a transceiver. However, high current will result in high
noise. Such kind of method is not ideal due to the high noise and the high power consumption. To date, few VCOs have met the specifications of
the WCDMA and CDMA2000 standards due to the stringent phase noise
requirement. This is especially true for fully integrated VCOs due to the low
inductor Q. Based on the understanding of the flicker noise generation in the
MOSFET, a novel method for improving the phase noise performance of a CMOS LC
oscillator was investigated. An example of a VCO that meets the system
specifications of the WCDMA/CDMA2000 has been achieved through this novel
topology. This work was published in IEEE Transaction year 2004 and has 37
citations (Google Scholar) so far [J3]. · Other related work done by his team includes
design of ultra-low power transceiver at sub-threshold region. Design of
sub-threshold region has been extensively implemented by watch maker such
that the small lithium battery in the watch can last for many years without
replacement. In fact, photovoltaic cell that is small enough to be fitted
into the front panel of a watch is popularly used to power the watch.
However, due to some fundamental limitations, sub-threshold region circuits
are mostly employed for low frequency applications like watches and
calculators and are often deemed unsuitable for high frequency RF circuits.
Through extensive studies on the RF circuits working at sub-threshold region,
we have successfully fabricated and tested a 2.45GHz RF circuit (LNA) working
at sub-threshold region. The circuit has achieved ultra-low power consumption
with good performance. This work by my part-time PhD student was published in
IEEE Transaction year 2008 [J8]. · Our group has later consolidated the
experience to successfully design an energy-aware IC chip that will adjust
its performance according to the amount of received signal strength and will
use the optimum power to receive the signal in a given situation [published
in J17, J22, C23, C24, C26]. This work together with the idea of harvesting
electromagnetic energy and converting it to useful DC power have resulted in
a new generation of ultra-low-power System-on-Chips (SoCs) or "green" SoCs, with quantum leap
for power consumption. In other words, power consumption can be reduced to be
more than 10 times less compared to conventional RFIC, which will greatly
increase its usefulness for daily usage. Thus, green electronics holds the
promise as the next generation electronics technology for computer
communication and consumer products, where energy-aware design and energy
harvesting techniques are part of the overall design considerations to
achieve significant energy savings and hence prolonging battery life. · We have been awarded several competitive
funding for this area of research: · • PI: $1,186,270, AcRF Tier 2 MOE. · • Co-PI: S$1.2 mil, funded by Agency for
Science, Technology and Research (A*STAR). · • Collaborator: S$25 mil, funded by NRF. · Since 2008, we have published 16
International Journals (mostly in TOP tier), 25 IEEE conference papers, 1
book and 2 book chapters on this topic. · Some other highlights of these works
include: (1) 5mW energy-aware receiver with comparable performance to those
of 70mW conventional receiver. (2) High speed frequency divider that consumes
only 25% of the power of conventional frequency divider with the same speed.
(3) Smallest 60GHz and 77GHz dual-mode CMOS filter [0.1x0.56mm2] with
comparable performance to other larger CMOS filters. All these and more works
have been implemented using low
cost CMOS 0.18µm
technology from local foundry. In addition, all these works have been
fabricated and tested physically. · · The research of mmW and RFIC will not be complete without thorough investigation
on its components modeling
and its related innovation. Currently a low performance RFIC transceiver chip
can cost as low as 25 US cents. However most RFIC chips are
not truly fully integrated, meaning external components are still needed for
the RFIC transceiver to work properly. Such external components can easily
cost 25 US cents thus doubling the cost of an RFIC transceiver. One of the
reasons for using external components like an inductor at RF frequency is due
to the low quality factor of integrated inductor implemented
in CMOS. Conventional quality factor for an integrated inductor is about 4 to
10, while external inductor can achieved 100 times better
quality factor. We have filed a patent together with our industry partner,
Chartered Semiconductor (now GlobalFoundries) on a new invention
that will allow the quality factor of an integrated inductor to achieve 1000
times higher than conventional inductor. This work currently being pursued by
my PhD student (Qiu Ping) [P1] is set to revolutionize the RFIC industry. · Extensive work has been done on high speed
interconnects, transformers, transistor’s modeling and characterization. Some of these works are done in
collaboration with GlobalFoundries. · We have been awarded several competitive
funding for this area of research: · • PI: $0.323mil, AcRF Tier 1 MOE. · • Co-PI: S$0.3 mil, University of Electronic
Science and Technology (UEST) of China-NTU Joint R&D, jointly funded by
UEST and NTU. · • Co-PI: S$0.25 mil, NRF. · Since 2008, we have published 8
International Journals (mostly in TOP tier), 5 IEEE conference papers and 1
book on this topic. ·
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