Antenna Mutual-Coupling Mitigation With Analogue Compensation Network

Roger G Green, Tommaso Cappello (Contributor), Mark A Beach (Contributor), Geoff Hilton (Contributor)

Research output: Contribution to conferenceConference Paperpeer-review

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Abstract

This work presents a systematic approach
supported by theory, simulation, and measurements that
demonstrates antenna mutual-coupling reduction by means of
an analogue compensation network. This compensation network
is realized with two couplers and a passive network based on a
2nd-order band-pass filter. A 3.5GHz two-element patch antenna
is built and used for comparison with the same antenna and
compensation network. After a theoretical analysis highlighting
the relevant design constraints, simulated and measured results
demonstrate a reduction in the antenna S12 from 27 dBs to
50 dBs, corresponding to an improvement up to 23 dB over the
whole antenna 10 dB bandwidth, while the antenna S11 and
SA22 remain unchanged. This SA12 improvement is also shown
to improve the far-field radiation pattern for the considered
antenna array.
Original languageEnglish
Publication statusPublished - 7 Apr 2022
EventEuropean Microwave conference - London, United Kingdom
Duration: 2 Apr 20227 Apr 2022

Conference

ConferenceEuropean Microwave conference
Country/TerritoryUnited Kingdom
CityLondon
Period2/04/227/04/22

Keywords

  • antenna array
  • antenna isolation
  • decoupling network
  • MIMO
  • mutual coupling
  • vector cancellation

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