標題: 2.4/5.7-GHz Dual-Band Dual-Conversion Architecture With Correlated LO Signal Generators
作者: Syu, Jin-Siang
Meng, Chinchun
Yu, Sheng-Wen
Wu, Tzung-Han
Huang, Guo-Wei
電信工程研究所
Institute of Communications Engineering
關鍵字: Wireless LAN;dual-band;SiGe heterojunction bipolar transistor (HBT);low-IF;image rejection
公開日期: 2009
摘要: A 2.4/5.7-GHz dual-band dual-conversion downconverter is demonstrated using 0.35-mu m SiGe hetero-junction bipolar transistor (HBT) technology. This downconverter employs a complex dual-conversion system and a complex filter to reject the first and second image signals, respectively. The LO(1) frequency is 2.5 times the LO(2) frequency and is generated by a divide-by-two divider, a frequency doubler and a single-sideband up-converter. As a result, the correlated LO signals maintain excellent image-rejection performance of the dual-conversion system while only one LO input is needed. The downconverter achieves a 40/39-dB image-rejection ratio of the first image and a 44/46-dB image-rejection ratio of the second image for 2.4/5.7-GHz modes, respectively.
URI: http://hdl.handle.net/11536/17859
http://dx.doi.org/10.1109/MWSYM.2009.5165997
ISBN: 978-1-4244-2803-8
ISSN: 0149-645X
DOI: 10.1109/MWSYM.2009.5165997
期刊: 2009 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, VOLS 1-3
起始頁: 1517
結束頁: 1520
顯示於類別:會議論文


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