Browsing by Author "Ko, CL"

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A CMOS dual-mode RF front-end receiver for GSM and WCDMA
(2004)
Ko, CL
;
Kuo, MC
;
Hsu, CM
;
Kuo, CN
;
交大名義發表
A dual-mode, triple-band RF front-end receiver for GSM900, DCS1800 and WCDMA is presented. Because the system concepts of GSM and WCDMA are totally different from the standards, the chip uses low-IF and zero-IF receiver architecture for GSM and WCDMA, respectively. This chip consists of three parallel LNAs and down-conversion mixers with on-chip LO I/Q generations. The receiver front-end has been implemented in a standard 0.25um CMOs process and consumes about 30-mA from a 2.7-V power supply for all modes. The measured double-side band noise figure and voltage gain are 3dB, 36dB for the GSM900, 5.9dB, 31dB for the DCS1800, and ?-dB, 17.2dB for the WCDMA, respectively.
A CMOS dual-mode RF front-end receiver for GSM and WCDMA applications
(2005-06-01)
Ko, CL
;
Kuo, MC
;
Kuo, CN
;
交大名義發表
;
National Chiao Tung University
A dual-mode, triple-band RF front-end receiver for GSM900, DCS800 and WCDMA is presented in this paper. This chip uses low-IF and zero-IF receiver architectures for GSM and WCDMA respectively to fulfill the entirely different system requirements of the two standards. It consists of three parallel LNAs and down-conversion mixers with on-chip LO I/Q generations. The receiver front-end is implemented in a standard 0.25 mu m CMOS process and consumes about 30-mA from a 2.7-V power supply for all modes. The measured double-side band noise figure and voltage gain are 3 dB, 36 dB for the GSM900, 5.9 dB, 31 d13 for the DCS 1800, and 4.3 dB, 29.6 dB for the WCDMA, respectively.