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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2022-05-31
Low Sidelobe and Tilted Beam Microstrip Antenna for Circularly-Polarized SAR Onboard UAV
By
Yohandri,

    Dr. Yohandri

    Physics Department

    Universitas Negeri Padang

    Indonesia

    Homepage

Asrizal,

    Dr. Asrizal

    Physics Department

    Universitas Negeri Padang

    Indonesia

    Homepage

Asif Awaludin,

    Dr. Asif Awaludin

    National Research and Innovation Agency

    Indonesia

    Homepage

Josaphat Tetuko Sri Sumantyo

    Prof. Josaphat Tetuko Sri Sumantyo

    Center for Environmental Remote Sensing

    Chiba University

    Japan

    Homepage

Progress In Electromagnetics Research Letters, Vol. 104, 95-103, 2022
doi:10.2528/PIERL22032803 | Google Scholar

Abstract
This work is purposed to provide microstrip antennas for a CP-SAR system with low sidelobe, tilted beam, and circular polarization. This antenna is configured for the L-band (1.27 GHz) mounting on an Unmanned Aerial Vehicle (UAV). The proposed microstrip antenna consists of three-square radiating elements, due to the ease in fabrication. Meanwhile, the proximity structure has been adopted in the feeding network. The tilted beam was obtained by arranging the different phases for each element. On the other hand, a low sidelobe was achieved by managing the power distribution of each patch using the Chebyshev polynomial. The proposed antenna was precisely printed and examined in an anechoic chamber to verify the characteristics of the antenna such as polarization, sidelobe level, and beam direction. Based on the measurement results, the proposed antenna has a tilted beam and a low side lobe that meets the specifications of the CP-SAR system.
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Citation
Yohandri, Asrizal, Asif Awaludin, and Josaphat Tetuko Sri Sumantyo, "Low Sidelobe and Tilted Beam Microstrip Antenna for Circularly-Polarized SAR Onboard UAV," Progress In Electromagnetics Research Letters, Vol. 104, 95-103, 2022.
doi:10.2528/PIERL22032803
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