Wideband Circularly Polarized Slotted-Patch Antenna With a Reflector

被引:28
|
作者
Chen, Jhih-Ming [1 ]
Row, Jeen-Sheen [1 ]
机构
[1] Natl Changhua Univ Educ, Dept Elect Engn, Changhua 500, Taiwan
关键词
Circular polarization; slotted patch antenna; wideband operation; BANDWIDTH;
D O I
10.1109/LAWP.2014.2374453
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 design for wideband circularly polarized (CP) antennas with unidirectional radiation is described. The antenna structure is mainly composed of a rectangular slotted patch and a metallic reflector. First, an optimum CP design for the standalone slotted patch antenna is investigated, and a 3-dB-axial-ratio bandwidth of 53% is obtained. Then, the metallic reflector is placed at the rear of the slotted patch for generating unidirectional radiation, and the effects of various reflector sizes on CP performances are studied. Measured results show that the slotted patch antenna with a reflector has almost the same CP bandwidth as the standalone slotted patch antenna, and it has good impedance matching as well as stable radiation patterns across the CP operating frequencies.
引用
收藏
页码:575 / 578
页数:4
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