Effects of Subharmonics in LO Generation on RF Transceivers

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Citations (Scopus)

Abstract

Subharmonic residual in LO can degrade the performance of RF/mm-wave transceivers that employ frequency multipliers for LO generation. In this paper, we analyze the side effects that such subharmonics can cause. The effects are categorized to three parts: distortions in the up/down-converted signal, out-of-band emissions, and blocker tolerance in the receivers. A 60 GHz direct-conversion transceiver with a frequency tripler is taken for analysis. It is proved that there is no distortion or out-of-band emission issue with the presence of subharmonic in LO. For normal blocker tolerance requirements, the intrinsic subharmonic rejection capability in frequency multipliers is sufficient. In extreme cases, extra subharmonic filtering/rejection is needed.

Original languageEnglish
Title of host publication2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)
Place of PublicationDanvers
PublisherIEEE
Pages1-3
Number of pages3
ISBN (Electronic)978-1-5386-1197-5
ISBN (Print)978-1-5386-1198-2
DOIs
Publication statusPublished - 2018
Event2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies, IMWS-5G 2018 - Dublin, Ireland
Duration: 30 Aug 201831 Aug 2018

Conference

Conference2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies, IMWS-5G 2018
CountryIreland
CityDublin
Period30/08/1831/08/18

Keywords

  • 60 GHz
  • blocker tolerance
  • distortion
  • emission mask
  • frequency multiplier
  • LO
  • mm-wave
  • subharmonic
  • tripler

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