PATCH ANTENNA USING RECTANGULAR CENTRE SLOT AND CIRCULAR GROUND SLOT FOR CIRCULARLY POLARIZED SYNTHETIC APERTURE RADAR (CP-SAR) APPLICATION

In this paper, a circularly polarized antenna for Synthetic Aperture Radar (SAR) application is presented. The antenna is proposed to be implemented for the airborne SAR and the spaceborne SAR. To enhance the bandwidth of the antenna, the Circular-Ring-Slot (CRS) technique is implemented on the grou...

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Bibliographic Details
Published in:Electromagnetic waves (Cambridge, Mass.) Mass.), 2017-01, Vol.160, p.51-61
Main Authors: Kurniawan, Farohaji, Sumantyo, Josaphat T. Sri, Ito, Koichi, Kuze, Hiroaki, Gao, Steven
Format: Article
Language:English
Subjects:
Antennas
Antennas (Electronics)
Applied research
Bandwidths
Design and construction
Electric properties
Polarization (Waves)
Synthetic aperture radar
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Summary:In this paper, a circularly polarized antenna for Synthetic Aperture Radar (SAR) application is presented. The antenna is proposed to be implemented for the airborne SAR and the spaceborne SAR. To enhance the bandwidth of the antenna, the Circular-Ring-Slot (CRS) technique is implemented on the ground plane and in a square slot in the centre of the patch. In this antenna's design, the model of the slot on the radiator is also investigated. The antenna is printed on NPC-H220A substrates with the dielectric constant of 2.17 and thickness of 1.6 mm. The resonant frequency of the antenna design sets at 9.4 GHz with the minimum requirement of the bandwidth of 800 MHz. The antenna design is produced under the -10 dB bandwidth of reflection coefficient, [S.sub.11] of approximately 27% (8.2 GHz-10.76 GHz) and left-handed circular polarization (LHCP). The gain of the antenna is 6.5dBic and 12.7% (8.8 GHz-9.84 GHz) for the axial ratio bandwidth (ARBW). This paper includes the description and presentation of the completed discussion.
ISSN:1559-8985
1070-4698
1559-8985
DOI:10.2528/PIER17082903