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

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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On the measurement of characteristics of antennas for indoor digital TV

실내 디지털 TV용 안테나 특성 측정에 관하여

  • Park, Jin-Taek (Department of Mobile Communication Engineering, Changshin University) ;
  • Lee, Jong-Ig (Department of Electronics Engineering, Dongseo University) ;
  • Yeo, Junho (School of Computer and Communication Engineering, Daegu University)
  • Received : 2014.08.18
  • Accepted : 2014.09.22
  • Published : 2014.10.31
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Abstract

In this paper, measurement methods for the characteristics of antennas for indoor digital TV (DTV), having 75-ohm port impedance, are introduced. Reference impedance of typical radio frequency (or microwave) systems and measurement equipments is 50 ohm. However, the reference impedance of antennas for indoor DTV is 75 ohm, and the characteristics of the antennas cannot be measured directly using the measurement equipments. Measurement methods, using test equipments with reference impedance of 50 ohm, for the characteristics(impedance, radiation patterns, and gain) of antennas designed to fit for 75 ohm port are introduced.

본 논문에서는 포트 임피던스가 75옴인 실내 디지털 TV (DTV)용 안테나의 특성 측정 방법에 대해 소개하였다. 일반적인 RF (혹은 마이크로파) 시스템과 측정 장비의 기준 임피던스는 거의 대부분 50옴이다. 이에 비해 실내 디지털 TV용 안테나의 기준 임피던스는 75옴이므로 기준 임피던스가 50옴인 측정 장비를 이용하여 직접 특성을 측정할 수 없다. 50옴을 기준으로 하는 장비를 이용하여 75옴에 적합하도록 설계된 안테나의 특성(임피던스, 복사패턴 및 이득)에 대한 측정방법을 소개하였다.

Keywords

References

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