一种基于零阶谐振的双频电小天线设计  

A Zeroth-Order Resonating Electrically Small Antenna with Dual-band Characteristics

作　　者：石源 曾庆生 司晴晴 商语秋 王哲飞 SHI Yuan;ZENG Qing-sheng;SI Qing-qing;SHANG Yu-qiu;WANG Zhe-fei(Academy of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学航天学院,南京210016

出　　处：《微波学报》2022年第2期28-32,共5页Journal of Microwaves

基　　金：南京航空航天大学研究生创新基地(实验室)开放基金(kfjj20201501)。

摘　　要：提出利用复合左右手传输线结构的零阶谐振设计一款具有双频特性的电小天线。该电小天线主要由介质基板、地面、加载了交指电容的贴片、弯曲线电感与圆角矩形虚拟地组成,具有电小尺寸特性(电尺寸为0.75)。该天线有两个工作频段,频段1的中心频率为1.22 GHz,频段2的中心频率为2.78 GHz,对应的相对带宽分别为3.28%和27.34%,同时覆盖了GPS L2(1220 MHz)与WiMAX(2500~2700 MHz)两个通信频段。天线在两个工作频段内均具有良好的辐射特性,频段1和频段2的平均峰值增益分别为1.0 dBi和1.72 dBi,平均辐射效率分别为53.12%和74.07%。最终对所设计的天线进行实物加工和测试,测试结果与仿真结果吻合良好。In this paper, a zeroth-order resonating electrically small antenna(ESA) with dual-band characteristics is proposed. The present antenna is mainly composed of the dielectric substrate, ground, patch with interdigital capacitance, inductive meander line and a rounded rectangle virtual ground, and has an electrically small size(the electrical size is 0.75). The proposed antenna exhibits dual-band behavior with the first and second bands centered at 1.22 GHz and 2.78 GHz, respectively, with the corresponding impedance bandwidths of 3.28% and 27.34%, respectively. The proposed antenna operates at GPS L2(Global Position System, 1220 MHz) and WiMAX(World Interoperability for Microwave Access, 2500-2700 MHz) and shows good radiation characteristics with an average peak gain of 1.0 dBi and 1.72 dBi and average radiation efficiency of 53.12% and 74.07% for the first and second bands, respectively. The prototype structure is fabricated and experimentally validated, and the measured and simulated results are in good agreement.

关 键 词：复合左右手传输线 电小天线 零阶谐振 双频带 

分 类 号：TN820[电子电信—信息与通信工程]