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Parallel plate slot array fed by post-wall center-feed waveguide consisting of T-junctions

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3 Author(s)
Hashimoto, K. ; Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo ; Hirokawa, J. ; Ando, M.

A feed waveguide consisting of T-junctions is used to reduce a blocking area of the post-wall center-fed parallel plate slot array. The width of the blocking area of the T-junction type is less than that of the cross-junction type by 0.5 lambda0. The sidelobe level in the E-plane of the T-junction type is suppressed down to -9.4 dB while that of the cross-junction type is -7.8 dB. To suppress the reflection of the feed waveguide, a novel design procedure is presented to reduce the reflection, and its validity is confirmed experimentally.

Published in:

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Date of Conference:

5-11 July 2008