위성 통신 및 레이다 송신기를 위한 고효율 Ka 대역 14 way 방사형 도파관 결합기 개발

초록

This study presents a 14-way waveguide power combiner applicable to the Ka-band (±2 GHz). The proposed combiner integrates a dual T-type junction-based TE10-TM01 mode transducer with a radial combining structure, enabling symmetric electric field distribution while simultaneously maintaining low transmission loss. Through 3D simulations and experimental verification, the design demonstrated an insertion loss of less than 0.4 dB, a return loss greater than 16 dB, and a combined efficiency exceeding 95 %. The results indicate that the proposed structure is well-suited for Ka-band high-power systems employing solid-state power amplifier (SSPA) combination techniques.

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