Y. Yohandri, V. Wissan, I. Firmansyah, P. Rizki Akbar, J.T. Sri Sumantyo, H. Kuze
We have developed an array antenna consisting of 12 elements of simple square-shaped, corner-truncated patches for circularly polarized synthetic aperture radar (CP-SAR) operated in the L-band. The corporate feed design concept is implemented by combining a split-T and a 3-way circular-sector-shape power divider to excite circularly polarized radiation. The fabricated antenna based on the simulation using moment method gives a good circular polarization at the center frequency of 1.27 GHz with an impedance bandwidth of 6.1% and 3-dB axial ratio bandwidth of 1.0%, satisfying the specification for our circularly polarized synthetic aperture radar intended for use onboard an unmanned aerial vehicle and a small satellite.
Microwave Remote Sensing Laboratory, Center for Environmental Remote Sensing, Chiba University, Inage-ku, Chiba 263-8522, 1-33, Yayoi-cho, Japan; Physics Department, State University of Padang, Kampus UNP, Padang, West Sumatera 25131, Jln. Prof. Hamka Air Tawar, Indonesia
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