標題: 5.7 GHz Gilbert I/Q downconverter integrated with a passive LO quadrature generator and an RF Marchand balun
作者: Syu, Jin-Siang
Meng, Chinchun
Yen, Ying-Chieh
電信工程研究所
Institute of Communications Engineering
關鍵字: Gilbert mixer;I/Q downconverter;Marchand balun;SiGeBiCMOS
公開日期: 1-Feb-2008
摘要: A 5.7 GHz I/Q downconversion mixer is demonstrated in this letter using 0.35 mu m SiGe BiCMOS technology. A quarter-wavelength coupled line and two center-tapped transformers are utilized to generate differential quadrature LO signals. A miniaturized Marchand balun is placed before the common-base-configured RF input stage of each I/Q Gilbert mixer to generate balanced RF signals. All the reactive passive elements are placed directly on the standard silicon substrate. The 5.7 GHz I/Q downconverter achieves 7 dB conversion gain, -26 dBm IP1dB, and -18 dBm IIP3 at the power consumption of 3.875 mW and 2.5 V supply voltage.
URI: http://dx.doi.org/10.1109/LMWC.2007.915133
http://hdl.handle.net/11536/9728
ISSN: 1531-1309
DOI: 10.1109/LMWC.2007.915133
期刊: IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume: 18
Issue: 2
起始頁: 127
結束頁: 129
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