A Cross Polarization Suppressed Sequential Array with L-Probe Fed Rectangular Microstrip Antennas
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概要
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In this paper, we present a sequentially rotated array antenna with a rectangular patch MSA fed by an L-probe. Since it's important to decrease couplings between patch elements in order to suppress the cross-polarization level, rectangular patches with aspect ratio of k are adopted. We investigate the cross-polarization level of the sequential array and discuss the relationship between the cross-polarization level and the mutual coupling. As a result, the bandwdith of the antenna element is obtained 14.6% when its VSWR is less than 1.5, and the directivity and cross-polarization level of a 4-patch sequential array are 10.8dBic and 1.7dBic, respectively, where k=0.6 and the patch spacing of d=0.5 wave length. These characteristics are 5.6dB and 5.8dB better than the corresponding values of a square patch sequential array antenna.
著者
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Obote Shigeki
Faculty Of Engineering Ibaraki University
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Tomiki Atsushi
Japan Aerospace Exploration Agency
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Toda Tomoaki
Japan Aerospace Exploration Agency
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Kagoshima Ken-ichi
Faculty Of Engineering Ibaraki University
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Ikeda Kazuki
Graduate School Of Science And Engineering Ibaraki University
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Sato Keigo
Graduate School Of Science And Engineering Ibaraki University
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