Antenna Mutual-Coupling Mitigation With Analogue Compensation Network

Roger G Green; Tommaso Cappello; Mark A Beach; Geoff  Hilton

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 conference › Conference Paper › peer-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 language	English
Publication status	Published - 7 Apr 2022
Event	European Microwave conference - London, United Kingdom Duration: 2 Apr 2022 → 7 Apr 2022

Conference

Conference	European Microwave conference
Country/Territory	United Kingdom
City	London
Period	2/04/22 → 7/04/22

Keywords

antenna array
antenna isolation
decoupling network
MIMO
mutual coupling
vector cancellation

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@conference{d648929b1f00400b9662f3559fd90ced,

title = "Antenna Mutual-Coupling Mitigation With Analogue Compensation Network",

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.",

keywords = "antenna array, antenna isolation, decoupling network, MIMO, mutual coupling, vector cancellation",

author = "Green, \{Roger G\} and Tommaso Cappello and Beach, \{Mark A\} and Geoff Hilton",

year = "2022",

month = apr,

day = "7",

language = "English",

note = "European Microwave conference ; Conference date: 02-04-2022 Through 07-04-2022",

}

TY - CONF

T1 - Antenna Mutual-Coupling Mitigation With Analogue Compensation Network

AU - Green, Roger G

A2 - Cappello, Tommaso

A2 - Beach, Mark A

A2 - Hilton, Geoff

PY - 2022/4/7

Y1 - 2022/4/7

N2 - 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.

AB - 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.

KW - antenna array

KW - antenna isolation

KW - decoupling network

KW - MIMO

KW - mutual coupling

KW - vector cancellation

M3 - Conference Paper

T2 - European Microwave conference

Y2 - 2 April 2022 through 7 April 2022

ER -

Antenna Mutual-Coupling Mitigation With Analogue Compensation Network

Abstract

Conference

Keywords

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