The Mutual Coupling Between Antennas On The Medium Wave Radio Transmitter Antenna Characteristics Of Impact Studies

For the medium wave broadcast transmitters, within a certain distance, Channels with different ranges will have impacts on each other due to the mutual coupling between the antennae. These impacts are determined by the antenna sizes, spacing, way of arrangement, the ground conditions and other factors. In other words, inappropriate distance between different transmitting antennae has a serious negative effect on the broadcasts. This article is to study the 526.5kHz ~ 1606.5kHz frequency range of medium-wave radio transmitting antennas of different spacing and arrangement of the antenna performance impact, and has been useful conclusions,which is significant to the site selection and relocation of medium wave broadcast transmitting system.The article is divided into six parts. The first part describes the study of background, significance and current development status of medium wave broadcast transmitting system.The second part introduces the functions and basic parameters of antennae in radio systems; effects of mutual coupling on Directional Sensitivity; and the modeling and simulation of Ansoft HFSS.The third part discusses two different frequency antennas, different spacing conditions in the interaction between two antennas, given their variation.The forth part examined three different frequency antennas, arranged in different ways and under different spacing antenna pattern, summed up the changes of them, gives useful conclusions.The sixth part discusses four different frequency antennas, arranged in different ways and pitch conditions, the antenna pattern, summed up the changes of them, gives useful conclusions.The last part conclusions and prospects of future developments will be made at the end of the article.