Title: A 2.4, 5.2, and 5.7 GHz CMFB gilbert downconverter with low-voltage cascode current mirror input stage
Authors: Tseng, Sheng-Che
Meng, Chinchun
Huang, Guo-Wei
電信工程研究所
Institute of Communications Engineering
Keywords: Gilbert mixer;micromixer;CMFB;downconverter;RFIC
Issue Date: 1-Nov-2006
Abstract: A triple-band (2.4, 5.2, and 5.7 GHz) CMFB downconversion micromixer with a low-voltage cascode current mirror RF input stage has been demonstrated by the 0.18-mu m CMOS technology in this letter. Micromixer has a single-ended RF input stage, the CMFB topology is adopted to improve the conversion gain, and a differential-to-single output buffer is used to convert the differential output of the mixer into a single-ended output. The fully integrated downconversion micromixer has the conversion gain of 12 dB, LO-to-IF isolation of 43 dB, LO-to-RF isolation of 48 dB, and RF-to-IF isolation of 18 dB at 2.4 GHz. The mixer has the conversion gain of 7.5 dB, LO-to-IF isolation of 54 dB, LO-to-RF isolation of 49.5 dB, and RF-to-IF isolation of 25 dB at 5.7 GHz. The total quiescent current consumption of the circuit is 7.6 mA. (c) 2006 Wiley Periodicals, Inc.
URI: http://dx.doi.org/10.1002/mop.21950
http://hdl.handle.net/11536/11631
ISSN: 0895-2477
DOI: 10.1002/mop.21950
Journal: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume: 48
Issue: 11
Begin Page: 2345
End Page: 2349
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