宽带高增益直角反射器天线  

Corner-reflector Antenna With Wide-band and High Gain

作　　者：蒋东[1] JIANG Dong(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《压电与声光》2018年第3期404-406,411,共4页Piezoelectrics & Acoustooptics

摘　　要：该文设计了一种基于直角反射器的宽带高增益天线。天线结构包括八元印刷偶极子阵、一分八并联馈电网络、直角反射器。平行双线形式馈电网络实现各偶极子单元平衡馈电的同时具有阻抗变换作用,从而保证了辐射单元具有良好的幅相特性。馈电网络和辐射单元均印刷在介电常数为2.65的介质基板上,使得天线结构简单、成本低、易加工。将印刷有辐射单元和馈电网络的介质板放置于直角反射器内提高天线的增益。测试结果显示,该天线电压驻波比(VSWR)≤2的相对阻抗带宽达到21.4%(7.00~8.68GHz),在对应的阻抗带宽内,天线增益达到17dBi。A wideband high gain antenna based on the corner reflector is designed in this paper. The antenna consists of an eight-element printed dipole array, a 1-to-8 shunt-fed network and a corner reflector. The symmetrical feeding network of impedance transformers provides the same amplitude＇s and phase’s distributions to each printed dipoles in the wideband frequency and improves the impedance bandwidth. The feeding network and the radiation unit are printed on a dielectric substrate with a dielectric constant of 2.65, making the antenna simple in structure, low in cost, and easy to process. Moreover, the printed dipole array and feeding network is placed in the corner reflector, which enables to increase the antenna gain. The measured results show that the proposed antenna can achieve a measured impedance bandwidth for VSWR ≤2 of 21.4% （7.00 to 8.68 GHz） and a high gain of about 17 dBi in the corresponding impedance bandwidth.

关 键 词：天线 角反射器 并联馈电网络 高增益 

分 类 号：TN821.8[电子电信—信息与通信工程] TN828.4