Broadband Circularly Polarized Dielectric Rod Antenna for Millimeter-wave Communications

被引：0
|
作者：
Ji, Zhuoqiao [1 ]
Wang, Kai Xu [1 ]
Wong, Hang [1 ]
机构：
[1] City Univ Hong Kong, Dept Elect Engn, State Key Lab Millimeter Waves, Kowloon, Hong Kong, Peoples R China
来源：
2018 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP) | 2018年
关键词：
Dielectric rod antenna; circular polarization (CP); wide bandwidth;
D O I：
暂无
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：
This paper presents a method to achieve broadband 3-dB Axial Ratio bandwidth (ARBW) in circularly polarized (CP) dielectric rod antenna from a linearly polarized (LP) waveguide. The proposed antenna achieves an impedance bandwidth covering the whole Ka band and an overlapped 3-dB ARBW of 37% (27.5 to 40 (Hz). It consists of a feed taper and a rotated body taper. Circular polarization is achieved by the rotation of the body taper, which prompts the LP incident wave from the waveguide to disassemble into two orthogonal electric fields with small magnitude disparity. 90 degrees phase difference is achieved by adjusting the length and the dimension of the rectangular cross-section of the body taper. This antenna is simple, easy fabricated and wideband.
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页数：2
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