A 700-950 MHz Tunable Frequency Division Duplex Transceiver Combining Passive and Active Self-interference Cancellation

Leo Laughlin, Chunqing Zhang, Mark A. Beach, Kevin A. Morris, John L. Haine, Muhammad Kalimuddin Khan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)
243 Downloads (Pure)

Abstract

This paper presents a novel tunable FDD transceiver architecture which uses an electrical balance duplexer (EBD) to isolate Tx noise in the Rx band, and combines this with active self-interference cancellation to suppress the Tx blocker. This overcomes the limited isolation bandwidth of EBDs, shifting complexity from the RF domain to the digital baseband domain in order to provide isolation in both bands. A discrete hardware prototype has shown promising results and demonstrated the viability of this architecture, achieving 6.0-7.4 dB antenna referred noise figure in a 20 MHz downlink bandwidth, in the presence of a +27 dBm Tx blocker, across a range of duplex configurations in the 700-950 MHz range.

Original languageEnglish
Title of host publication2018 IEEE MTT-S International Microwave Symposium (IMS 2018)
Subtitle of host publicationProceedings of a meeting held 10-15 June 2018, Philadelphia, Pennsylvania, USA
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1207-1210
Number of pages4
ISBN (Electronic)9781538650677
ISBN (Print)9781538650684
DOIs
Publication statusPublished - Aug 2018
Event2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 - Philadelphia, United States
Duration: 10 Jun 201815 Jun 2018

Publication series

Name
ISSN (Electronic)2576-7216

Conference

Conference2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
CountryUnited States
CityPhiladelphia
Period10/06/1815/06/18

Keywords

  • Duplexers
  • FDD
  • IBFD
  • self-interference

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