Search Results - "Yoke-Choy Leong"

Analysis and design of miniaturized lumped-distributed impedance-transforming baluns by Ang, Kian Sen, Leong, Yoke Choy, Lee, Chee How

“…Conventional distributed baluns employ /spl lambda//2 transmission lines or /spl lambda//4 coupled lines. By adding only one or two lumped capacitors, the…”
Get full text

Full band waveguide-to-microstrip probe transitions by Yoke-Choy Leong, Weinreb, S.

“…Design data in the form of dimension tables is presented for probe transitions for microstrip substrates with 4 dielectric constants (2.2, 6.0, 10.1, and 13)…”
Get full text

Multisection impedance-transforming coupled-line baluns by Kian Sen Ang, Leong, Y.C., Chee How Lee

“…A new class of multisection impedance-transforming coupled-line baluns is presented in this paper. It is based on the quarter-wavelength coupled-line balun. By…”
Get full text

Converting baluns into broad-band impedance-transforming 180° hybrids by Ang, Kian Sen, Leong, Yoke Choy

Get full text

A broad-band quarter-wavelength impedance transformer with three reflection zeros within passband by Kian Sen Ang, Chee How Lee, Leong, Y.C.

“…A new impedance transformer employing a transmission line and a coupled-line section is presented in this paper. It is physically a quarter-wavelength long,…”
Get full text

A derivation of a class of 3-port baluns from symmetrical 4-port networks by Leong, Yoke Choy, Ang, Kian Sen, Lee, Chee How

“…This paper describes an approach in deriving the general conditions that need to be satisfied for a class of 3-port baluns. This is done by analyzing the…”
Get full text

A new class of multisection 180° hybrids based on cascadable hybrid-ring couplers by Ang, Kian Sen, Leong, Yoke Choy, Lee, Chee How

Get full text

65-145 GHz InP MMIC HEMT medium power amplifiers by Samoska, L., Yoke Choy Leong

“…In this paper, we present two MMIC power amplifier designs utilizing InP HEMT technology. The first amplifier covers two full waveguide bands, WR10 (75-110…”
Get full text

A wide-band monopulse comparator with complete nulling in all delta channels throughout sum channel bandwidth by Kian Sen Ang, Leong, Y.C., Chee How Lee

“…A broad-band monopulse comparator with complete nulling in the three delta channels throughout the sum channel bandwidth is presented in this paper. It is…”
Get full text

Converting baluns into broad-band impedance-transforming 180 degree hybrids by Ang, Kian Sen, Leong, Yoke Choy

“…A technique for converting baluns into 180 degree hybrids by adding an in-phase power splitter is presented in this paper. Incorporating the broad-band…”
Get full text

A new class of multisection 180 degree hybrids based on cascadable hybrid-ring couplers by Sen Ang, Kian, Choy Leong, Yoke, How Lee, Chee

“…A new class of multisection 180 degree hybrids is presented in this paper. It is based on the hybrid-ring coupler that has been reconfigured such that multiple…”
Get full text

Analysis and design of coupled line impedance transformers by Kian Sen Ang, Chee How Lee, Yoke Choy Leong

“…Impedance transformers employing coupled line sections that are less than quarter wavelengths are presented in this paper. Exact solutions relating the coupled…”
Get full text

Enhancement of Hotspot Cooling With Diamond Heat Spreader on Cu Microchannel Heat Sink for GaN-on-Si Device by Han, Yong, Lau, Boon Long, Zhang, Xiaowu, Leong, Yoke Choy, Choo, Kok Fah

“…The diamond heat spreader has been directly attached between the test chip and the Cu microchannel heat sink for thermal performance enhancement of the…”
Get full text

Thermal Management of Hotspots With a Microjet-Based Hybrid Heat Sink for GaN-on-Si Devices by Han, Yong, Lau, Boon Long, Zhang, Xiaowu, Leong, Yoke Choy, Choo, Kok Fah

“…The direct-die-attached cooling solution with a diamond heat spreader and hybrid Si heat sink has been developed for hotspot cooling of a GaN-on-Si device. The…”
Get full text

Zero voltage switching high efficiency power amplifier with parallel coupled line load by Lim, Hong Yi, Ng, Geok Ing, Leong, Yoke Choy

“…ABSTRACT A load network for zero voltage switching high efficiency power amplifier design consisting of a parallel coupled line has been demonstrated. The load…”
Get full text

Thermal management of hotspots using upstream laminar micro-jet impinging array by Yong Han, Yong Jiun Lee, Boon Long Lau, Xiaowu Zhang, Yoke Choy Leong, Kok Fah Choo, Poh Keong Chan

“…The problem of heat removal is likely to become more severe due to the presence of hotspots in the integrated circuit chip. The heat dissipation capability of…”
Get full text

GaN-on-Si hotspot thermal management using direct-die-attached microchannel heat sink by Yong Jiun Lee, Boon Long Lau, Yoke Choy Leong, Kok Fah Choo, Xiaowu Zhang, Poh Keong Chan

“…GaN-on-Si device posts new challenge to thermal management with its highly concentrated heat flux dissipation from HEMT. In order to characterize GaN-on-Si…”
Get full text

Compact true time delay line with partially shielded coplanar waveguide transmission lines by Hong Yi Lim, Geok Ing Ng, Yoke Choy Leong

“…This paper presents a method to attain a compact true time delay line with a partially shielded coplanar waveguide transmission line. Closely spaced air…”
Get full text

A novel table based large signal model for FETs based on non-quasi-static effect high order sources by Yunshen Long, Yongxin Guo, Zheng Zhong, Yoke Choy Leong

“…A technology independent non-quasi-static FET model at millimeter wave frequency is presented in this study. High order constitutive nonlinear current sources…”
Get full text

A modular approach to design a full three-way 8 to 18 GHz MMIC active circulator by Lim, Hong Yi, Ng, Geok Ing, Ang, Kian Sen, Leong, Yoke Choy

“…A modular approach to design full three‐way active circulator is presented. Derived S‐parameters for the modular design approach illustrates that broadband…”
Get full text