Design Method for Medium-wave Broadcasting Multi-frequency Common Tower and Bandwidth Expansion
Based on the patent"An Antenna Matching Network and its Matching Design Method"obtained by our station,this article delves into the antenna matching network and its matching design method.Firstly,the impedance of the working frequency point at the bottom of the transmitting antenna tower is pretuned through a pretuning network,achieving a low Q value at the working frequency point.Secondly,it is discussed how to effectively block the interference frequency through a high Q value filtering network,and maintain the low Q value of the channel through a correction network,thereby achieving broadband transmission frequency.This study is of great significance for improving the performance and stability of antenna matching networks.