Design of A Low-Profile Dual Circularly Polarized Phased Array Antenna

被引：0

作者：

Sang, Lianjia ^{[1
]}

Meng, Hongfu ^{[1
]}

Dou, Wenbin ^{[1
]}

机构：

[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China

来源：

2016 IEEE INTERNATIONAL CONFERENCE ON UBIQUITOUS WIRELESS BROADBAND (ICUWB2016) | 2016年

关键词：

low-profile; dual circularly polarized; sequentially rotated; phased array; PATCH ANTENNA;

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：

A low-profile dual circularly polarized antenna array is proposed, employing cavity-backed patch antenna as elements. Circular polarization is obtained by feeding a pair of orthogonal linear polarization simultaneously with 900 phase shift using a branch-line coupler. The antenna element achieves impedance bandwidth of 32.8% (vertical bar S-11 vertical bar <-10dB) and isolation bandwidth of 17.1% (vertical bar S-21 vertical bar <-10dB). The sequentially rotated 2x2 subarray exhibits impedance bandwidth of 15% (vertical bar S-11 vertical bar <-10dB) and the axial ratio remains below 0.08dB. The overall height of the antenna is 12.5mm, which is about 0.1 lambda at the center frequency 2.4GHz. Simulation results show that the 2x8 array achieves a wide beam scanning capability of +/- 60 degrees.

引用

页数：3

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