Abstract
본 논문에서는 향후 차세대 통신망으로 예상되는 LTE(Long Term Evolution)와 DCS1800, DCS1900, WCDMA 대역에 적용 가능한 MIMO 안테나를 설계 및 제작하였다. 기존 모노폴 안테나 구조에 MD 매질을 이용하여 저주파 대역인 LTE 대역의 성능을 만족함과 동시에 소형화를 이루고, 고주파 대역인 DCS, WCDMA 대역의 광대역화를 동시에 만족시켰으며 전 대역 우수한 격리도 특성을 나타내었다. 제안된 MIMO 안테나는 LTE 대역과 DCS1800, DCS1900, WCDMA 대역 모두 VSWR < 2 및 격리도 -10 dB 이하를 만족하였고, -1.66 ~ 1.33 dBi의 이득 및 전방향성 방사패턴을 얻었다. In this paper, we designed and implemented the MIMO antenna for LTE(Long Term Evolution), supposed to be a next generation communications network, DCS1800, DCS1900 and WCDMA. Using conventional monopole antenna with MD material results in good characteristics, miniaturization for LTE band and as well as broadbanding for DCS, WCDMA band. The performance of the proposed MIMO antenna shows VSWR < 2, under -10 dB of isolation and the gain is -1.66 ~ 1.33 dBi for LTE(Long Term Evolution), DCS1800, DCS1900 and WCDMA, which has omnidirectional radiation pattern.
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