一种自动调谐高频车载电小环天线设计  

Design of A High Frequency Vehicle Small Loop Antenna with Auto-Tuning Characteristic

作　　者：詹菲 闫永谋 ZHAN Fei;YAN Yongmou(The 50th Research Institute,China Electronic Technology Group Corporation,Shanghai 200331,China;School of Physics and Optoelectronic Engineering,Xidian University,Xi′an 710071,China)

机构地区：[1]中国电子科技集团公司第五十研究所,上海200331 [2]西安电子科技大学物理与光电工程学院,陕西西安710071

出　　处：《电子科技》2023年第6期16-20,共5页Electronic Science and Technology

基　　金：中国电科预研基金(6141B08050202)。

摘　　要：针对短波通信天线难以在一套设备上实现宽频段工作且不便运输的问题,文中提出了一种适用于近垂直入射天波技术高频通信的自动调谐电小环天线。该天线安装在车辆顶部,主体由耦合环、辐射环及自动调谐控制单元等部分构成,引入两种不同调谐方法,并对两种匹配网络进行集成与自动控制,具有物理结构简单、携带方便且辐射效率较高等优点。仿真和测试结果表明,该环天线在3~30 MHz整个高频频段驻波比小于2,中心频率在25 MHz处的最大增益可达2.7 dBi,最大辐射方向为垂直方向,满足高频近垂直入射天波通信需求,是短波通信系统的重要组成部分。For the problem that the shortwave communication antenna is hard to realize broadband operation and inconvenient to transport on a set of equipment,an auto-tuning small loop antenna suitable for high frequency communication of near vertical incident skywave technique is proposed.The antenna is installed on the top of the vehicle,and the main body is composed of coupling loop,radiation loop and auto-tuning unit.Two different tuning methods are skillfully introduced,and the two matching networks are integrated and automatically controlled.The antenna has the advantages of simple physical structure,convenient carrying and high radiation efficiency.The simulation and test results show that the standing wave ratio of the loop antenna is less than 2 in the whole high frequency band from 3 to 30 MHz,the maximum gain of the loop antenna at 25 MHz can reach 2.7 dBi,and the maximum radial direction is in the vertical,which meets the requirements of shortwave near vertical incidence skywave communication,and becomes an important part of the high frequency communication system.

关 键 词：宽带化 近垂直入射天波 自动调谐 电小环天线 耦合馈电 匹配网络 集成控制 

分 类 号：TN823[电子电信—信息与通信工程]