유한 차분법을 이용한 방송 송신탑과 반사판을 고려한 안테나 패턴 변화 분석

Abstract

To date, the antenna pattern design for a domestic broadcasting has been based on the standard document such as Rec. ITU-R BS.1195. In this document, an antenna is assumed as a point source under a far distance condition. But the document has no consideration on the effects of the transmission tower and reflectors. This paper describes the design of broadcasting transmission tower and reflectors by the FDTD(finite difference time domain)method. The simulation results show that attached structures can distort the antenna pattern.