An integrated full-duplex/FDD duplexer and receiver achieving 100MHz Bandwidth 58dB/48dB self-interference suppression using hybrid-analog-digital autonomous adaptation loops

Yuhe Cao, Xuanzhen Cao, Hyungjoo Seo, Jin Zhou

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

Abstract

This paper presents a 1.5-to-2 GHz CMOS electrical-balance duplexer and receiver supporting both frequency-division duplexing (FDD) and in-band full-duplex (IBFD) operations. The proposed multi-tap and multi-stage RF and analog self-interference cancellation adapts itself autonomously to a time-varying channel in real time using a new on-chip hybrid-analog-digital adaptation loop. A Gm-C-based reconfigurable frequency shift is utilized to support FDD operation. In measurement, 58dB and 48dB RF/analog self-interference suppression are achieved across a 100MHz bandwidth in the IBFD and the FDD mode, respectively. Using the proposed embedded adaptation loops, <50μs adaptation is achieved without any high-speed ADC or DSP.

Original languageEnglish (US)
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1203-1206
Number of pages4
ISBN (Electronic)9781728168159
DOIs
StatePublished - Aug 2020
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: Aug 4 2020Aug 6 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2020-August
ISSN (Print)0149-645X

Conference

Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
CountryUnited States
CityVirtual, Los Angeles
Period8/4/208/6/20

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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