Broadband Circularly Polarized Patch Antenna With Parasitic Strips

被引：109
|
作者：
Wu, Jianjun [1 ]
Yin, Yingzeng [1 ]
Wang, Zedong [1 ]
Lian, Ruina [1 ]
机构：
[1] Xidian Univ, Sci & Technol Antennas & Microwave Lab, Xian 710071, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2015年 / 14卷
关键词：
Circular polarization; enhanced radiation; parasitic elements; wideband antenna; BANDWIDTH; DESIGN; DIPOLE; GAIN;
D O I：
10.1109/LAWP.2014.2373823
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A patch antenna with parasitic strips is presented for wideband circular polarization. In order to broaden the axial-ratio (AR) bandwidth of the original corner-truncated patch, four parasitic strips are sequentially rotated and gap-coupled around the patch. A capacitive-coupled feed with a small disc on the top of the feeding probe is utilized to obtain a wide impedance-matching bandwidth. Moreover, another disc-loaded shorting pin is placed at the center of the antenna to adjust the squint beams and improve the gains along +z-axis. Measured results show that the proposed antenna with a low profile of 0.13 lambda(0) obtains a global bandwidth of 24% (2.32-2.95 GHz) for vertical bar S-11 vertical bar < -10 dB, AR < 3 dB, and average gain of 8 dBic.
引用
收藏
页码：559 / 562
页数：4
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