WIDE-BAND HIGH ISOLATION SUBHARMONICALLY PUMPED RESISTIVE MIXER WITH ACTIVE QUASI-CIRCULATOR | Zendy

Wei-Chih Chien | Zendy; ChihMing Lin | Zendy; Chien-Hung Liu | Zendy; Shih-Han Hung | Zendy; YeongHer Wang | Zendy

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WIDE-BAND HIGH ISOLATION SUBHARMONICALLY PUMPED RESISTIVE MIXER WITH ACTIVE QUASI-CIRCULATOR

Author(s) -

Wei-Chih Chien,

ChihMing Lin,

Chien-Hung Liu,

Shih-Han Hung,

YeongHer Wang

Publication year - 2010

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

ISSN - 1937-6480

DOI - 10.2528/pierl10091307

Subject(s) - circulator , resistive touchscreen , isolation (microbiology) , optoelectronics , electrical engineering , materials science , engineering , biology , microbiology and biotechnology

A novel subharmonically pumped resistive mixer (SH- PRM) with a core chip dimension of 0:64 £ 0:65mm 2 is fabri- cated through a standard 0.18"m CMOS process. An impedance- transforming active quasi-circulator is monolithically integrated with an nMOS fleld-efiect transistor (FET) to perform up-converter mix- ing while simultaneously enhancing all port isolation through a broad- band operation. The design analysis of impedance-transforming ac- tive quasi-circulator is also presented for matching between circulator and resistive transistor. As shown in the measured results, the mixer exhibits a 9{14.5dB conversion loss. All port-to-port isolations bet- ter than 16.5dB over a radio frequency (RF) of 10{20GHz can be achieved.

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