摘要
锥状波束天线在方位角上具有全向辐射方向图,在法线方向上具有凹口,由于通信传感面积大,广泛应用于无线通信、车载卫星通信等工程中。本文提出了一种基于Fabry-Perot谐振腔通过电控开关实现波束切换的准锥状波束天线。该天线以边缘8个超宽带天线和中心8个同轴进行馈电,通过FP腔提高天线增益,馈源从天线边缘和中心向FP腔馈电,利用电控开关和一分二功分器分别激励每组端口,每组端口在不同频率下于相同的方位角辐射波束,在3dB的交叉范围内,实现俯仰角7°~37°的波束切换覆盖。与传统的锥状波束天线相比,具有宽频带、高增益的特点,在通信系统中具有应用价值。
The conical beam antenna has omnidirectional Radiation pattern in azimuth and notch in normal direction.Due to the large communication sensing area,it is widely used in wireless communication and vehicle satellite communication projects.This article proposes a quasi conical beam antenna based on a Fabry Perot resonant cavity that achieves beam switching through an electrically controlled switch.The antenna is fed with 8 ultra wideband antennas at the edge and 8 coaxial antennas at the center.The antenna gain is increased through the FP cavity,and the feed source is fed from the edge and center of the antenna to the FP cavity.Each group of ports is excited using an electronic control switch and a one and two power splitter.Each group of ports radiates beams at the same azimuth angle at different frequencies,achieving beam switching coverage with an elevation angle of 7°to 37°within the 3dB crossover range.Compared with traditional conical beam antennas,they have the characteristics of broadband and high gain,and have application value in communication systems.
作者
赵珂
齐世山
吴文
ZHAO Ke;QI Shi-Shan;WU Wen(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210014,China)
出处
《微波学报》
CSCD
北大核心
2023年第S01期45-48,共4页
Journal of Microwaves
基金
国家自然科学基金(62271257)
作者简介
通信作者:齐世山,男,1983年生,副研究员。主要研究方向:电磁场与微波技术、天线理论与技术、阵列天线、锥状波束天线。E-mail:qiss@njust.edu.cn
