Dual Radial-Resonant Wide Beamwidth Circular Sector Microstrip Patch Antennas  

作　　者：MAO Xiaohui LU Wenjun JI Feiyan XING Xiuqiong ZHU Lei 

机构地区：[1]Jiangsu Key Laboratory of Wireless Communications,Nanjing University of Posts and Telecommunications,Nanjing 210003,China [2]Key Laboratory of Wireless Sensor Network&Communication,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China [3]Department of Electrical and Computer Engineering,Faculty of Science and Technology,University of Macao,Macao SAR,China

出　　处：《Chinese Journal of Electronics》2023年第4期710-719,共10页电子学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(61871233);the Research Project of Key Laboratory of Wireless Sensor Network&Communication,the Shanghai Institute of Microsystem and Information Technology(20200604);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX20_0808).

摘　　要：In this article,a design approach to a radial-resonant wide beamwidth circular sector patch antenna is advanced.As properly evolved from a U-shaped dipole,a prototype magnetic dipole can be fit in the radial direction of a circular sector patch radiator,with its length set as the positive odd-integer multiples of one-quarter wavelength.In this way,multiple TM0m(m=1,2,...)modes resonant circular sector patch antenna with short-circuited circumference and widened E-plane beamwidth can be realized by proper excitation and perturbations.Prototype antennas are then designed and fabricated to validate the design approach.Experimental results reveal that the E-plane beamwidth of a dual-resonant antenna fabricated on air/Teflon substrate can be effectively broadened to 128°/120°,with an impedance bandwidth of 17.4%/7.1%,respectively.In both cases,the antenna heights are strictly limited to no more than 0.03-guided wavelength.It is evidently validated that the proposed approach can effectively enhance the operational bandwidth and beamwidth of a microstrip patch antenna while maintaining its inherent low profile merit.

关 键 词：Dual-resonant Microstrip patch antenna Radial-resonant modes Wide beamwidth antenna 

分 类 号：TN820[电子电信—信息与通信工程]