Abstract
본 논문에서는 PCS/WCDMA/WiBro(<TEX>$1.750{\sim}2.39\;GHz$</TEX>) 공용 기지국 배열 안테나로서 사용 가능한 광대 역 다이폴 안테나를 제안한다. 제안된 안테나는 반사 소자를 갖는 반사판 부 다이폴 안테나로서 이득 평탄도를 개선시킨다. 제안된 안테나의 광대역 특성과 개선된 이득 평탄도를 확인하기 위하여 실제 안테나를 제작하고, 복사 특성을 측정하여 계산된 결과와 비교하였다. 측정 결과는 계산 결과와 비슷하게 나타났으며, <TEX>$1.75{\sim}2.39\;GHz$</TEX> 대역에서 0.74 dB의 이득 평탄도와 5 dBi 이상의 이득, 1.5:1 이하의 VSWR을 갖는 것으로 나타났다. 본 논문에서 설계된 다이폴 안테나는 PCS/WCDMA/WiBro 공용 배열 안테나의 배열 소자로 사용할 수 있을 것으로 생각된다. In this paper, a wide-band dipole antenna suitable for use in PCS/WCDMA/WiBro(<TEX>$1.750{\sim}2.39\;GHz$</TEX>) base station array antenna is presented. The presented antenna is a dipole antenna with pate which has the reflector element and improves the gain flatness. To confirm the wide-band characteristics and the gain flatness of the presented antenna, the experimental antenna is fabricated and its radiation characteristics are measured, compared with calculated results. It is shown that the designed antenna has VSWR less than 1.5, gain over 5 dBi, and gain flatness 0.74 dB in <TEX>$1.75{\sim}2.39\;GHz$</TEX>. The measured results show good agreement with the calculated results. From these results, we confirm that the designed antenna can be used as a array element of the wide-band base station array antenna for PCS/WCDMA/WiBro.
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