Abstract
This paper proposes a Ka-band high-gain antipodal Vivaldi antenna. The antenna is designed by SIW-CPW power feed. Both ends of the radiating arm are loaded with elliptical patches, claw-shaped slots and rectangular corrugations are loaded on the patch, and elliptical lens are loaded on the front end of the radiating arm, and four rows of metal strips are loaded on the lens. The proposed antenna has overcome the shortcomings of the traditional Vivaldi antenna’s high feed loss, and better improve the antenna gain. The Ka-band antenna shows excellent radiation performance, with a peak gain of up to 12.1dBi.
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