Isolation performance of sub-harmonic Gilbert mixers

Hung Ju Wei*, Chin-Chun Meng, Yi Chen Lin

*Corresponding author for this work

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

Abstract

This paper analyzes the isolation mechanisms between two types of sub-harmonic Gilbert mixers in detail. The proposed double-compensated structure without additional output balun has inherent LO and 2LO cancellations at each port, which can greatly improve 2LO-to-RF leakage for the down or up converters. The experimental results reveal that the proposed double-compensated structure applied in a 2-μm GaInP/GaAs HBT sub-harmonic down converter achieves a 2LO-to-RF isolation of 80 dB, and its f LO/2f LO leakage is insensitivity to LO power when compared with that of a conventional single-stacked cell.

Original languageEnglish
Title of host publication2011 International SoC Design Conference, ISOCC 2011
Pages108-111
Number of pages4
DOIs
StatePublished - 1 Dec 2011
Event8th International SoC Design Conference 2011, ISOCC 2011 - Jeju, Korea, Republic of
Duration: 17 Nov 201118 Nov 2011

Publication series

Name2011 International SoC Design Conference, ISOCC 2011

Conference

Conference8th International SoC Design Conference 2011, ISOCC 2011
CountryKorea, Republic of
CityJeju
Period17/11/1118/11/11

Keywords

  • Double-compensated
  • GaInP/GaAs HBT
  • Gilbert mixer
  • Isolation
  • SHM
  • Stacked cell
  • Sub-harmonic mixer

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