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Current Research
Program
High Efficiency Linear Power Amplifier
for WiMAX
- Multiband power amplifier MMIC design
- High efficiency linear power
amplifier system
Scalable Real Time Location Positioning
System
Products for Commercialization
Previous Research
Program
Microwave and millimeter-wave MEMS for automatic identification
and tracking (1999-2003):
Role in project: Principal Investigator
• A prototype
2.45 GHz active back scattering tag, reader and software; tag
range of up to 20 meters.
• Design, implementation and testing of many different
types of antennas operating at 2.45 GHz, 5.8 GHz and 24 GHz.
Micro-machined versions of some of these antennas (with cavity)
were also designed and fabricated. A slot fed patch micro-machined
antenna at 24 GHz on Silicon wafer exhibited 7dBi gain and 6%
bandwidth.
• Design, implementation and testing of many different
types of filters operating at 2.45 GHz, 5.8 GHz and 24 GHz.
24 GHz filter using micromachined transmission lines were designed
and fabricated on both GaAs and HR Silicon; simulated passband
insertion loss of the filter was 2 dB.
• Design and fabrication of shunt capacitive RF MEMS switch
and multi-band antenna.
Top
Research
Interest
Analogue and Digital beam forming array antenna
Ultra-wideband microwave circuits
Ultra-wideband channel characterization and modeling
Radio
frequency identification
Wireless
networking and positioning systems
Top
Postgraduate Students
Ph.D.
(In progress)
Mr Zhou Yuan, "Precise Position and Orientation Determination for 3-D
Gaming"
Mr Fu Kai, "Joint
peak-power suppression and base-band digital adaptive
pre-distortion techniques to improve
linearity and efficiency of broadband power amplifier in the
presence of OFDM signals"
Mr Lee Jian Xing, "Cross layer
design and optimization for UWB enabled scalable Precision
Positioning System"
Mr Thein Than Tun, "High
efficiency, high linearity and high power microwave amplifier
for WiMAX portable sets"
Mr Fang Chao, "UWB
Impulse Radio novel front-end circuits based on Distributed
Amplifier topology"
Ms Xu Jun, "Medium Access
Control Protocol Design for UWB Positioning Systems"
Mr Tian Hongtao, "Cross
layer optimization for multimedia multi-hop wireless network"
Ph.D. (Completed)
Dr
Xu Chi, SIMTech, Singapore
Dr Zhang Zhen,
Compserv Pte Ltd, Singapore
Dr C.Q
Xu, OKI Techno Centre, Singapore
Dr W.
Li, OKI Techno Centre, Singapore
MEng. (Completed)
Ms
Shi Danhong, "Real-time Positioning
implementation via GPS code phase and carrier phase measurement" |
