Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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800MHz Band Dual-fed ICS Repeater Antenna with High Isolation

800MHz 대역 고격리 이중급전 ICS 중계기 안테나

  • Ko, Jin-Hyun (Electronic Communication Engineering. Chonnam National University) ;
  • Kim, Gun-Kyun (Electronic Communication Engineering. Chonnam National University) ;
  • Rhee, Seung-Yeop (Electronic Communication Engineering. Chonnam National University) ;
  • Lee, Jong-Ig (Division of Mechatroics Engineering. Dongseo University)
  • Received : 2016.04.04
  • Accepted : 2016.04.08
  • Published : 2016.05.31
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Abstract

Even if ICS(Interference Cancellation System) repeater is used in wireless communication system, it has the disadvantage that it must have enough distance between Donor and Service antenna to be isolated. In this paper, new ICS repeater integrated antenna with high insolation characteristics is designed. The proposed antenna is fabricated for 800MHz and measured. Bandwidth and gain are optimized by changing the stub lengths near main patch and power divider, and also by changing the size of parasitic patch. The fabricated antenna has a return loss less than -13 dB, a gain over 3 dBi, and an isolation between the donor and the server antennas less than -56 dB from 824~894 MHz for CDMA mobile communication. Therefore, the proposed antenna structure can be applied to eliminate the shadow area and to expand the coverage area for any other wireless communication bands.

무선통신 시스템에서 ICS 중계기는 Donor와 Service 사이의 거리를 많이 이격시켜야 높은 격리도를 확보할 수 있는 단점을 가지고 있다. 본 논문에서는 음영지역을 해소하여 통화권 영역을 확대하기 위해 높은 격리특성을 갖는 ICS(Interference Cancellation System)중계기 일체형 안테나를 설계하고 제작 및 측정을 통하여 성능을 평가하였다. 대역폭과 이득은 주방사 패치 및 기생 패치의 크기, 스터브 길이 등을 조정하여 구현하였다. 제작된 안테나는 CDMA 이동통신 주파수인 824~894 MHz 대역에서 이득은 3 dBi 이상, 격리도는 -56 dB 이하의 양호한 특성을 나타내었다.

Keywords

References

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