標題: | 10 GHz dual-conversion low-IF downconverter with microwave and analogue quadrature |
作者: | Syu, J. -S. Meng, C. Teng, Y. -H. 電信工程研究所 Institute of Communications Engineering |
公開日期: | 18-六月-2009 |
摘要: | A 10 GHz dual-conversion low-IF downconverter using 0.18-mm CMOS technology is demonstrated. The high-frequency quadrature RF and LO(1) signals are generated by broadside-coupled quadrature couplers while a two-section polyphase filter is utilised for the low-frequency LO(2) quadrature signal generation. As a result, the demonstrated downconverter achieves a conversion gain of 7 dB, IP(1dB) of -16 dBm, IIP(3) of 25 dBm and noise figure of 26 dB at a 1.8 V supply. The image-rejection ratio of the first/second image signal is 33/42 dB for IF frequency ranging from 10 to 60 MHz, respectively. |
URI: | http://dx.doi.org/10.1049/el.2009.0360 http://hdl.handle.net/11536/7100 |
ISSN: | 0013-5194 |
DOI: | 10.1049/el.2009.0360 |
期刊: | ELECTRONICS LETTERS |
Volume: | 45 |
Issue: | 13 |
起始頁: | 685 |
結束頁: | 686 |
顯示於類別: | 期刊論文 |