Title: | Broadband SiGe HBT Gilbert downconverter with 1.8 to 36 GHz integrated dual Marchand balun |
Authors: | Syu, J. -S. Meng, C. Yu, S. -W. 電信工程研究所 Institute of Communications Engineering |
Issue Date: | 3-Jul-2008 |
Abstract: | A broadband Gilbert downconverter with an integrated dual Marchand balun (balanced to unbalanced transformer) is demonstrated by using 0.35 mu m SiGe heterojunction bipolar transistor (HBT) technology. A dual Marchand balun consisting of a lower band balun and an upper band balun is employed in the LO stage of the downconverter to maintain balanced LO signals from 1.8 to 36 GHz. The broadband downconverter has peak conversion gain of 3 dB at RF = 3 GHz and 3 dB bandwidth of 1.8 to 20 GHz at 3.3 V DC supply. |
URI: | http://dx.doi.org/10.1049/el:20080897 http://hdl.handle.net/11536/8585 |
ISSN: | 0013-5194 |
DOI: | 10.1049/el:20080897 |
Journal: | ELECTRONICS LETTERS |
Volume: | 44 |
Issue: | 14 |
Begin Page: | 861 |
End Page: | U187 |
Appears in Collections: | 期刊論文 |