단락핀 위치에 따른 안테나 방사 특성 및 케이블 결합 영향

Abstract

본연구에서는소형접지면에서안테나단락핀의위치변화가안테나의임피던스대역폭, 방사효율및케이블민감도에미치는영향을분석하였다. 접지면의전하분포가강한위치에안테나단락핀을배치할경우접지면과안테나의결합이강화되어임피던스대역폭및방사효율이향상됨을확인하였다. 추가적으로케이블이인접한환경을고려하여안테나근처에케이블을적용하였을때의영향을실험적으로검증하였다. 케이블이존재할경우임피던스정합은다소악화되었으나, 케이블에 의한 비의도적인 방사 경로로 인하여 방사효율이 오히려 증가하는 현상이 관측되었다.

This study investigated the effects of the shorting-pin position on the impedance bandwidth, radiation efficiency, and cable sensitivity of an antenna mounted on a small ground plane. When the shorting pin was placed in a region of strong charge distribution on the ground plane, the coupling between the antenna and the ground was enhanced, resulting in an improved impedance bandwidth and radiation efficiency. Furthermore, the influence of a nearby cable was experimentally verified to consider realistic operating conditions. Although the presence of the cable slightly degraded impedance matching, it acted as a parasitic radiator, leading to an increase in the radiation efficiency.