Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication

This paper presents a bi-port, single-layered (planar), dual circularly polarized (CP) patch antenna with improved interport isolation for S-band satellite telemetry and telecommand applications. The dual-port, planar antenna is based on a square-shaped radiator with trimmed corner to achieve CP cha...

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Main Authors: Haq Nawaz, Ahmad Umar Niazi, Mansoor Ahmad
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:International Journal of Antennas and Propagation
Online Access:http://dx.doi.org/10.1155/2021/8022207
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author Haq Nawaz
Ahmad Umar Niazi
Mansoor Ahmad
author_facet Haq Nawaz
Ahmad Umar Niazi
Mansoor Ahmad
author_sort Haq Nawaz
collection DOAJ
description This paper presents a bi-port, single-layered (planar), dual circularly polarized (CP) patch antenna with improved interport isolation for S-band satellite telemetry and telecommand applications. The dual-port, planar antenna is based on a square-shaped radiator with trimmed corner to achieve CP characteristics (RHCP and LHCP) for excitations from respective ports. However, the RF isolation between the two ports is very low due to strong power leakage from transmit (Tx) to transmit (Rx) port. The externally employed tunable self-interference cancellation (SIC) circuit achieves high isolation between orthogonal ports while axial ratio (AR) is ≤3 dB for both right and left handed circular polarization modes. The employed single-tap SIC circuit/loop attains the high interport isolation through signal inversion mechanism. The proposed antenna design achieves ≥72 dB peak interport isolation in addition to ≥30 dB and 15 dB port to port isolation over the isolation or SIC bandwidths of 15 MHz and 90 MHz (−10 dB bandwidth for both ports), respectively. The port to port isolation performance is improved without significant degradation in antenna radiation characteristics. The validation model of the presented planar antenna based on single element characterizes much better measured interport isolation performance compared to those dual CP printed antennas reported earlier as endorsed through detailed comparison
format Article
id doaj-art-9cb7dd8ed23b4d22bbc6fc201bab0438
institution Kabale University
issn 1687-5869
1687-5877
language English
publishDate 2021-01-01
publisher Wiley
record_format Article
series International Journal of Antennas and Propagation
spelling doaj-art-9cb7dd8ed23b4d22bbc6fc201bab04382025-02-03T07:24:22ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772021-01-01202110.1155/2021/80222078022207Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite CommunicationHaq Nawaz0Ahmad Umar Niazi1Mansoor Ahmad2Electrical Engineering, University of Engineering and Technology (UET), Lahore, PakistanElectronics Engineering, University of Engineering and Technology (UET), Taxila, PakistanDepartment of Electronics, University of Buner, Buner, Khyber Pakhtunkhwa, PakistanThis paper presents a bi-port, single-layered (planar), dual circularly polarized (CP) patch antenna with improved interport isolation for S-band satellite telemetry and telecommand applications. The dual-port, planar antenna is based on a square-shaped radiator with trimmed corner to achieve CP characteristics (RHCP and LHCP) for excitations from respective ports. However, the RF isolation between the two ports is very low due to strong power leakage from transmit (Tx) to transmit (Rx) port. The externally employed tunable self-interference cancellation (SIC) circuit achieves high isolation between orthogonal ports while axial ratio (AR) is ≤3 dB for both right and left handed circular polarization modes. The employed single-tap SIC circuit/loop attains the high interport isolation through signal inversion mechanism. The proposed antenna design achieves ≥72 dB peak interport isolation in addition to ≥30 dB and 15 dB port to port isolation over the isolation or SIC bandwidths of 15 MHz and 90 MHz (−10 dB bandwidth for both ports), respectively. The port to port isolation performance is improved without significant degradation in antenna radiation characteristics. The validation model of the presented planar antenna based on single element characterizes much better measured interport isolation performance compared to those dual CP printed antennas reported earlier as endorsed through detailed comparisonhttp://dx.doi.org/10.1155/2021/8022207
spellingShingle Haq Nawaz
Ahmad Umar Niazi
Mansoor Ahmad
Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication
International Journal of Antennas and Propagation
title Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication
title_full Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication
title_fullStr Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication
title_full_unstemmed Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication
title_short Dual Circularly Polarized Patch Antenna with Improved Interport Isolation for S-Band Satellite Communication
title_sort dual circularly polarized patch antenna with improved interport isolation for s band satellite communication
url http://dx.doi.org/10.1155/2021/8022207
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AT ahmadumarniazi dualcircularlypolarizedpatchantennawithimprovedinterportisolationforsbandsatellitecommunication
AT mansoorahmad dualcircularlypolarizedpatchantennawithimprovedinterportisolationforsbandsatellitecommunication