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We propose a 4×4-element corporate-feed waveguide slot array antenna with cavities for the 120 GHz band. In order to compensate the mutual coupling effects among neighbored slots, a cavity structure is employed for each radiating slot. As a result, broad bandwidth characteristic is achieved in a small-sized array. The reflection bandwidth is 12.0% for VSWR < 1.5. The peak gain is 21.2 dBi with...
We propose a 4 4-element corporate-feed waveguide slot array antenna with outer cavities for the 120 GHz band. To adjust the mutual coupling effects in a small sized array antenna, an outer cavity structure is employed for each radiating slot. The outer cavity in this antenna structure provides adequate mutual coupling effects for each radiating element. As a result, high antenna efficiency...
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