V-band Sub-Harmonic Gate-Pumped Resistive Mixer with a 180o Hybrid Using an In-Phase Power Divider Merging with an Out-Of-Phase Marchand Balun

Wei Ling Chang, Chinchun Meng, Guo Wei Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

A high isolation gate-pumped resistive sub-harmonic mixer with a miniature 180° hybrid is demonstrated using 90 nm CMOS process. An in-phase power divider and an out-of-phase Marchand balun form a reduced-size 180° hybrid with shared coupled lines. For a sub-harmonic mixer, the input matches at LO/RF ports of the 180° hybrid are achieved using high/low coupling coefficients of the shared equal-length coupled lines. Moreover, isolations between RF and LO ports are achieved at all frequencies because a Marchand balun maintains balanced signals and a power divider provides in-phase equal magnitude signals at all frequencies. The sub-harmonic mixer achieves a conversion gain around 0-3 dB from 58-67 GHz with 0 dBm LO pumping power. The LO-to-RF isolation is better than 36 dB within the operating bandwidth.

Original languageEnglish
Title of host publication2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages236-238
Number of pages3
ISBN (Electronic)9781728113098
DOIs
StatePublished - Jun 2019
Event2019 IEEE MTT-S International Microwave Symposium, IMS 2019 - Boston, United States
Duration: 2 Jun 20197 Jun 2019

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2019-June
ISSN (Print)0149-645X

Conference

Conference2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Country/TerritoryUnited States
CityBoston
Period2/06/197/06/19

Keywords

  • 180° hybrid
  • Marchand balun
  • power divider
  • subharmonic mixer.

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