Analysis and Design of a Novel Circularly Polarized Antipodal Linearly Tapered Slot Antenna

被引：48
作者：
Yao, Yuan [1 ]
Cheng, Xiaohe [1 ]
Yu, Junsheng [1 ]
Chen, Xiaodong [2 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing Key Lab Work Safety Intelligent Monitorin, Beijing 100876, Peoples R China
[2] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2016年 / 64卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Antipodal linearly tapered slot antenna (ALTSA); circularly polarized (CP); millimeter-wave; slotline; WIRELESS COMMUNICATIONS; WAVE;
D O I：
10.1109/TAP.2016.2593870
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 and characterizes a novel antipodal linearly tapered slot antenna for generating the circularly polarized (CP) field. By introducing two symmetrical slots on the top and bottom layers of a rectangular WR-15 waveguide, we could obtain circular polarization with an axial ratio bandwidth of 34.1%. The waveguide was used to feed the proposed antenna with very wideband impedance matching. The antenna can achieve impedance bandwidth of 40% for S(1,1) <-15 dB from 50 to 75 GHz. The simulation and measurement results show that the antenna can produce very good radiation patterns, with stable gain of 9.8 dBi +/- 1.24 dBi, low back radiation, and narrow beamwidth over the operating frequency range. The working principle of this CP antenna is explained, using theoretical equations and explicit current distributions. The proposed antenna is easy to manufacture and is a compact candidate for high performance CP millimeter-wave antenna.
引用
收藏
页码：4178 / 4187
页数：10
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