Design of multi channel television receiving antennas

Abstract

Since the introduction of Television to Sri Lanka in 1979, television viewers in Sri Lanka now have an opportunity to tune into seven TV channels. The island wide coverage of these channels has been achieved by the use of 24 transmitters. Some operators have one transmission station for island wide coverage and others use four to six transmission stations scattered around the country for island wide coverage. This has created a serious problem to the TV viewer, when selecting a suitable antenna. The problem is further complicated by the lack of awareness of the public. Therefore, many antenna manufacturers and vendors have exploited this situation and earn undue profits by selling variety of antennas without any technical details essential for deciding the suitability of the antenna for a particular location.