A baseband technique for automated LO leakage suppression achieving < -80dBm in wideband passive mixer-first receivers

Suren Jayasuriya, Dong Yang, Alyosha Molnar

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

10 Scopus citations

Abstract

A baseband technique is presented to detect and suppress LO leakage in wideband passive mixer-first receivers. Using a variable shunting resistance on the RF port, the LO leakage signal is modulated, down-converted and detected from baseband outputs. Current DACs injecting to the baseband port are up-converted and can be adjusted to cancel LO leakage. Suppression of LO on the RF port < -80dBm is shown with a fully automated algorithm without the aid of RF spectrum monitoring.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479932863
DOIs
StatePublished - Nov 4 2014
Externally publishedYes
Event36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014 - San Jose, United States
Duration: Sep 15 2014Sep 17 2014

Publication series

NameProceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014

Other

Other36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014
CountryUnited States
CitySan Jose
Period9/15/149/17/14

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Keywords

  • Harmonic mixing
  • local oscillator (LO) leakage
  • mixer
  • passive mixer
  • receiver
  • software-defined radio (SDR)
  • wideband receiver

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Jayasuriya, S., Yang, D., & Molnar, A. (2014). A baseband technique for automated LO leakage suppression achieving < -80dBm in wideband passive mixer-first receivers. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014 [6946014] (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2014.6946014