A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna

This work presents an insight into the nature of ground plane (GP) current of a microstrip patch which is truly adverse in terms of generating cross-polar (XP) fields and minimally contributing to the primary radiation. This study also uses a theoretical basis in exploring a simple solution to mitig...

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Main Authors: Chandreyee Sarkar, Sk Rafidul, Chandrakanta Kumar, Debatosh Guha
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Open Journal of Antennas and Propagation
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10438720/
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author Chandreyee Sarkar
Sk Rafidul
Chandrakanta Kumar
Debatosh Guha
author_facet Chandreyee Sarkar
Sk Rafidul
Chandrakanta Kumar
Debatosh Guha
author_sort Chandreyee Sarkar
collection DOAJ
description This work presents an insight into the nature of ground plane (GP) current of a microstrip patch which is truly adverse in terms of generating cross-polar (XP) fields and minimally contributing to the primary radiation. This study also uses a theoretical basis in exploring a simple solution to mitigate the high XP values, specifically over the diagonal planes (D-planes). This actually turns out to be an engineered GP by clipping off its four corners. This has been thoroughly studied for a set of representative patch geometries and experimentally verified. A consistent XP reduction by 12–13 dB over D-planes has been ensured without affecting the impedance matching or antenna gains. This eventually results in cross-polar discrimination (XPD) of the order of 25–31 dB uniformly over the full range of operating bandwidth. In addition, the design is advantageous in terms of reduction in antenna size or the deployment area. Such a simple low-cost design appears as truly improved alternative to a typical standalone microstrip radiator for practical applications.
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spelling doaj.art-4cec3aa3e2ed433e9e6c2eebccedc1c42024-03-26T17:44:33ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312024-01-015251652410.1109/OJAP.2024.336669410438720A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip AntennaChandreyee Sarkar0https://orcid.org/0000-0002-2184-9922Sk Rafidul1https://orcid.org/0000-0001-7212-8976Chandrakanta Kumar2https://orcid.org/0000-0003-1616-5136Debatosh Guha3https://orcid.org/0000-0002-5667-9855Florida International University, Miami, FL, USAInstitute of Radio Physics and Electronics, University of Calcutta, Kolkata, IndiaDepartment of Space, Government of India, U R Rao Satellite Centre, Bengaluru, IndiaInstitute of Radio Physics and Electronics, University of Calcutta, Kolkata, IndiaThis work presents an insight into the nature of ground plane (GP) current of a microstrip patch which is truly adverse in terms of generating cross-polar (XP) fields and minimally contributing to the primary radiation. This study also uses a theoretical basis in exploring a simple solution to mitigate the high XP values, specifically over the diagonal planes (D-planes). This actually turns out to be an engineered GP by clipping off its four corners. This has been thoroughly studied for a set of representative patch geometries and experimentally verified. A consistent XP reduction by 12–13 dB over D-planes has been ensured without affecting the impedance matching or antenna gains. This eventually results in cross-polar discrimination (XPD) of the order of 25–31 dB uniformly over the full range of operating bandwidth. In addition, the design is advantageous in terms of reduction in antenna size or the deployment area. Such a simple low-cost design appears as truly improved alternative to a typical standalone microstrip radiator for practical applications.https://ieeexplore.ieee.org/document/10438720/Polarization puritydiagonal plane radiationmicrostrip antenna
spellingShingle Chandreyee Sarkar
Sk Rafidul
Chandrakanta Kumar
Debatosh Guha
A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna
IEEE Open Journal of Antennas and Propagation
Polarization purity
diagonal plane radiation
microstrip antenna
title A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna
title_full A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna
title_fullStr A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna
title_full_unstemmed A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna
title_short A Way to Address Inherent Weakness in Conceiving the Ground Plane Geometry for a Microstrip Antenna
title_sort way to address inherent weakness in conceiving the ground plane geometry for a microstrip antenna
topic Polarization purity
diagonal plane radiation
microstrip antenna
url https://ieeexplore.ieee.org/document/10438720/
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