Title :
Broadband Gilbert Micromixer With an LO Marchand Balun and a TIA Output Buffer
Author :
Tseng, Sheng-Che ; Meng, Chinchun ; Chang, Chia-Hung ; Wu, Chih-Kai ; Hung, Guo-Wei
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
A single-ended wideband downconversion Gilbert micromixer is demonstrated in this paper using 0.35-mum SiGe BiCMOS technology. Because of the wideband matching property of the micromixer, it can perform broad frequency translation. The TIA is utilized in the IF stage while a broadband Marchand balun is employed not only to generate differential LO signals but also to reserve the wideband operation of the mixer. This single-ended wideband mixer has the conversion gain of 15 dB, IP1dB of -17 dBm, and IIP3 of -6.5 dBm and works from 3.5 to 14.5 GHz. The input return loss is below -14 dB and the chip size is 1times1 mm2
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; baluns; buffer circuits; microwave mixers; 0.35 micron; 15 dB; 3.5 to 14.5 GHz; BiCMOS technology; LO Marchand balun; SiGe; TIA output buffer; broad frequency translation; broadband Gilbert micromixer; differential LO signals; wideband downconversion Gilbert micromixer; wideband matching; wideband mixer; Bandwidth; BiCMOS integrated circuits; Frequency; Germanium silicon alloys; Impedance matching; Mixers; Radiofrequency integrated circuits; Silicon germanium; Switches; Wideband; Marchand balun; Micromixer; SiGe BiCMOS; TIA; downconverter; single-ended; wideband;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249579
