重庆邮电大学学报（自然科学版）2025，Vol.37Issue(5)：638-646,9.DOI:10.3979/j.issn.1673-825X.202408120211
基于"L"形探针馈电的宽带双极化微带贴片天线设计
Design of wide-band dual-polarized microstrip patch antenna based on"L"probe feed
摘要
Abstract
A novel±45° dual-polarized microstrip patch antenna based on"L"-shaped probe feeding is designed and simu-lated for optimization.Two orthogonal"L"-shaped probes with a height difference are used for mutual coupling feeding to a-chieve dual polarization,significantly increasing the antenna's channel capacity.The copper metal columns between the two dielectric substrates play the role of feeding and radiation.The microstrip radiation patches are connected through metal-ized vias,and symmetrical"τ"-shaped grooves designed with openings facing inward are adopted to increase the resonance frequency point,the polarization patch is designed in an"S"-shape to expand the bandwidth.Simulation results show that the S11 of the antenna is less than-10 dB within the frequency bands of 2.08～2.77 GHz & 3.66～5.36 GHz,the relative impedance bandwidth is 66.15％,the gain is not less than 6 dBi,the radiation efficiency is above 90％,the isolation be-tween ports is greater than 10 dB,and the cross-polarization level is greater than 20 dB.Physical fabrication and actual measurements demonstrate good agreement between the measured and simulated results at port 1,while minor deviations at port 2 are attributed to fabrication and testing conditions but remain within acceptable limits.Compared with similar studies,the proposed antenna features wide bandwidth,compact structure,and ease of fabrication,making it suitable for C-band(3 700～4 200 MHz)and WLAN(2 400～2 484 MHz and 5 150～5 350 MHz)wireless transceiver communication sys-tems.关键词
"L"形探针/双极化/耦合馈电/宽带宽Key words
"L"shaped probe/dual polarization/coupled feed/wide bandwidth分类
电子信息工程引用本文复制引用
李新春,苏熠璇..基于"L"形探针馈电的宽带双极化微带贴片天线设计[J].重庆邮电大学学报（自然科学版）,2025,37(5):638-646,9.基金项目
国家自然科学基金项目(61971210)National Natural Science Foundation of China(61971210) （61971210）
