一种应用于微波水分检测仪的角锥喇叭天线设计与分析

摘要

根据惠更新原理对比分析了几种常用喇叭天线的特性,依据角锥喇叭天线的设计理论,结合铁精矿水分微波检测仪的实际情况,设计了中心频率为9.4 GHz、增益大于10 dB的角锥喇叭天线结构.运用HFSS软件对该结构进行了仿真分析,通过仿真和对比分析得到一组较好满足工作需要的辐射增益方向图、驻波比等辐射特性,仿真结果验证了设计天线的可行性,为后期的试验和运行提供依据.%A comparative analysis of the characteristics of several conventional horn antenna is made on the basis of Huygens principle, and the design principle of pyramidal horn antenna is studied. According to the actual situation of measuring iron ore concentrate moisture content based on microwave technique, the paper gives a description of the structure of pyramidal horn an-tenna whose center frequency is 9.4 GHz and associated gain is more than 10 dB. The antenna is simulated and optimized by HFSS. The simulation results verify the feasibility of the designed antenna through its radiation characteristics, such as voltage standing wave ratio, gain and radiation patterns, etc, which serve as a reference for later test and operation.