Gain-Improved Broadband Circularly Polarized Antenna Array With Parasitic Patches

A broadband circularly polarized (CP) antenna array with improved gain is proposed. The antenna consists of a CP loop that provides sequential phase, a 2 × 2 patch array, and four parasitic rectangular elements. The square patches are capacitively coupled with four strips, which are connected to the...

Full description

Saved in:
Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017, Vol.16, p.1468-1471
Main Authors: Ding, Kang, Gao, Cheng, Yu, Tongbin, Qu, Dexin, Zhang, Bing
Format: Article
Language:English
Subjects:
Antenna array
Antenna arrays
Antenna measurements
Bandwidth
broadband
Broadband antennas
Broadband communication
circularly polarized
Gain
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A broadband circularly polarized (CP) antenna array with improved gain is proposed. The antenna consists of a CP loop that provides sequential phase, a 2 × 2 patch array, and four parasitic rectangular elements. The square patches are capacitively coupled with four strips, which are connected to the loop feeding network. Moreover, four parasitic rectangular patches are introduced to enhance the gain in the lower band. The measured 10-dB impedance bandwidth is 15.9% (5.01-5.87 GHz), and the 3-dB axial-ratio bandwidth of 640 MHz (5.08-5.72 GHz) is also obtained. Besides, the proposed antenna array has a flat gain over the operating frequency and the maximum gain of 12.5 dBi is achieved at 5.3 GHz.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2016.2646400