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A dual-band concurrent RF front-end receiver design for GPS and Bluetooth applications

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5 Author(s)
Po-Da Chen ; Inst. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Cheng-Hung Chen ; Win-Ming Chang ; Kuo-Hua Cheng
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This paper presents a new concurrent dual-band radio frequency receiver front-end design that is intended for Global Positioning System (GPS) and Bluetooth applications. A low IF architecture was chosen for low-cost and low-power purpose. Using a dual-band sub-harmonic mixer make this new concurrent dual-band receiver architecture requires only a single frequency synthesizer so the chip area could be reduced. This concurrent frequency synthesizer only needs to provide 0.784GHz and 1.24GHz local frequency signals in this dual-band topology. This receiver is operated at 1.8V, and the simulation shows a voltage gain of 27.7dB at 1.57GHz and 24.2dB at 2.45GHz, a noise figure of 4.13dB at 1.57GHz and 6.84dB at 2.45GHz with a total power consumption of 22.2mW.

Published in:

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings  (Volume:2 )

Date of Conference:

4-7 Dec. 2005