Title: | A 5.2 GHz 47 dB image rejection double quadrature Gilbert downconverter using 0.35 mu m SiGe HBT technology |
Authors: | Wu, Tzung-Han Meng, Chinchun Wu, Tse-Hung Huang, Guo-Wei 電信工程研究所 Institute of Communications Engineering |
Keywords: | SiGeBiCMOS;Gilbert mixer;image rejection;polyphase filter;double quadrature downconverter |
Issue Date: | 1-Feb-2007 |
Abstract: | A 5.2 GHz 1 dB conversion gain, IP(1dB) = - 19 dBm and IIP(3)= -9dBm double quadrature Gilbert downconversion mixer with polyphase filters is demonstrated by using 0.35 mu m SiGe HBT technology. The image rejection ratio is better than 47 dB when LO=5.17 GHz and IF is in the range of 15 MHz to 45 MHz. The Gilbert downconverter has four-stage RC-CR IF polyphase filters for the image rejection. Polyphase filters are also used to generate LO and RF quadrature signals around 5 GHz in the double quadrature downconverter. |
URI: | http://dx.doi.org/10.1093/ietfec/e90-a.2.401 http://hdl.handle.net/11536/11143 |
ISSN: | 0916-8508 |
DOI: | 10.1093/ietfec/e90-a.2.401 |
Journal: | IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES |
Volume: | E90A |
Issue: | 2 |
Begin Page: | 401 |
End Page: | 405 |
Appears in Collections: | Articles |