標題: SiGe HBT Gilbert downconverter with an integrated miniaturized Marchand balun for UWB applications
作者: Tseng, Sheng-Che
Meng, Chinchun
Chang, Chia-Hung
Huang, Guo-Wei
電信工程研究所
Institute of Communications Engineering
關鍵字: downconverter;micromixer;Marchand balun;lumped-element;SiGeHBT;ultra-wideband
公開日期: 2007
摘要: A 15.5-dB conversion gain 0.35-mu m SiGe HBT Gilbert mixer with the lumped-element Marchand balun for 3.1 GHz to 10.6 GHz UWB applications is implemented using standard silicon processes. This mixer has the 1.5-GHz IF 3-dB bandwidth as well as the 15.8-dB noise figure. The balun size is only 0.25 mm x 0.5 mm. Because of the balanced structure of the Marchand balun, the magnitude imbalance and phase difference of outputs are below 1 dB and about 184 degrees, respectively. In the present of a lossy substrate, the dissipated loss of the balun is still less than 4 dB thanks to the advantage of the lumped-element technique. The total current consumption of the entire mixer is 13.9 mA at 5 V voltage supply while the chip size including probing pads is 1 mm x 0.9 mm.
URI: http://hdl.handle.net/11536/11623
ISBN: 978-1-4244-0687-6
ISSN: 0149-645X
期刊: 2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-6
起始頁: 2132
結束頁: 2135
Appears in Collections:Conferences Paper