Design of a novel low-profile dual-band and dual circularly polarized planar slot antenna

被引：0

作者：

Zhang, Naman ^{[1
]}

Yang, Feng ^{[1
]}

Yang, Peng ^{[1
]}

机构：

[1] School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, Sichuan

来源：

Dianbo Kexue Xuebao/Chinese Journal of Radio Science | 2015年 / 30卷 / 04期

关键词：

Circularly-polarized; Dual-band; Low-profile; Radial line slot antenna;

D O I：

10.13443/j.cjors.2014082501

中图分类号：

学科分类号：

摘要：

The design of a novel planar dual-band (Ku/Ka) and dual circularly polarized slot antenna is proposed in this paper. Three parallel plates compose a two-fold radial line waveguide, the top of which is an aperture with slots. Slot pairs of two bands are arrayed in counterclockwise and clockwise spiral to achieve Right-hand and left-hand circularly polarized radiation respectively. Different feeding structures are used, which one central probe for the lower band while multi-probes for the higher band. We add a ring of metal vias on the periphery of the radial line waveguide of higher band, which makes it easier to achieve good impedance matching at lower frequency band. The simulation results show that, at Ku and Ka band, the highest radiation efficiency is 60.5 and 55.7 percent, the-1 dB bandwidth about gain is 8.3% and 6.2%. The antenna has broad axis ratio bandwidth and excellent port isolation. The antenna has good engineering application value. Copyright © 2015 by Editorial Department of Chinese Journal of Radio Science

引用

页码：693 / 698

页数：5

共 12 条

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