15 GHz wideband CMOS Gilbert up-converter with stacked spiral-CPS phase-inverter rat-race coupler at RF port

Yu Chih Hsiao, Chin-Chun Meng, Po Yi Wu, Guo Wei Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A miniaturized phase-inverter rat-race and its wideband Gilbert up-converter is demonstrated in 0.13-μm CMOS technology. The common-mode LO leakage can be absorbed by the isolated port of the rat-race coupler while the rate-race employed at RF port to combine the mixer differential output. A phase-inverter rat-race coupler with a stacked spiral-shape coplanar stripline (CPS) by multi-layer metals can highly reduce the chip size. Finally, the experimental results of up-converter shows the 1-dB conversion gain and 15 GHz RF bandwidth. The IF-to-RF isolation is about 50 dB and LO-to-RF isolation is about 23 dB, respectively.

Original languageEnglish
Title of host publication2013 Asia-Pacific Microwave Conference Proceedings, APMC 2013
Pages179-181
Number of pages3
DOIs
StatePublished - 1 Dec 2013
Event2013 3rd Asia-Pacific Microwave Conference, APMC 2013 - Seoul, Korea, Republic of
Duration: 5 Nov 20138 Nov 2013

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC

Conference

Conference2013 3rd Asia-Pacific Microwave Conference, APMC 2013
CountryKorea, Republic of
CitySeoul
Period5/11/138/11/13

Keywords

  • phase inverter
  • rat-race coupler
  • up-converter

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