Broadband dual-polarized patch antennas fed by capacitively coupled feed and slot-coupled feed
Broadband dual-polarized patch antennas fed by capacitively coupled feed and slot-coupled feed
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DOI：
10.1109/8.999625
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发表时间：
2002-08
影响因子：
5.7
通讯作者：
Kin‐Lu Wong;T. Chiou
中科院分区：
文献类型：
--
作者：
Kin‐Lu Wong;T. Chiou
提出并实验研究了采用电容耦合馈电和缝隙耦合馈电(天线A)、180/SPL°/相移和缝隙耦合馈电(天线B)、180/SPL°/相移和两个缝隙耦合馈电(天线C)这三种馈源结构馈电的宽带双极化贴片天线。前两种馈电设计用于激励单元宽带贴片天线，而最后一种设计用于二元宽带贴片天线。所提出的贴片天线具有较厚的空气衬底，两种极化方式获得的10dB回波损耗阻抗带宽均大于13%。对于天线B和C的两个极化，在E平面和H平面方向图上都实现了高隔离度(20dB)。
Designs of broadband dual-polarized patch antennas fed by promising feed structures of a capacitively coupled feed and a slot-coupled feed (antenna A), two capacitively coupled feeds of a 180/spl deg/ phase shift and a slot-coupled feed (antenna B), and two capacitively coupled feeds of a 180/spl deg/ phase shift and two slot-coupled feeds (antenna C) are proposed and experimentally studied. The first two feed designs are for the excitation of a single-element broadband patch antenna, while the last design is for a two-element broadband patch antenna. These proposed patch antennas have a thick air substrate, and the 10 dB return-loss impedance bandwidths obtained for the two polarizations are all greater than 13%. High isolation ( 20 dB) in both E and H plane patterns for the two polarizations of antennas B and C are achieved.