Broad beamwidth stacked patch antenna with wide circularly polarised bandwidth

Author

Hao Jiang ; Zhenghui Xue ; Weiming Li ; Wu Ren

Author_Institution

Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China

Volume

51

Issue

1

fYear

2015

fDate

1 8 2015

Firstpage

10

Lastpage

12

Abstract

A broad beamwidth stacked patch antenna with wide circularly polarised (CP) bandwidth is presented. The proposed antenna consists of a stacked structure with a rectangular shell under its ground structure to obtain CP characteristics and wide beamwidth. The radiation quality is excellent over the entire upper hemisphere. The 3 dB beamwidth of the proposed antenna on 2.4 GHz is larger than 140°. Moreover, the CP bandwidth, determined from the 3 dB axial ratio, is found to be about 240 MHz. CP bandwidth of 10.2% and the impedance bandwidth of 52.8% centred on 2.4 GHz are obtained. The proposed antenna is a good candidate for wide angle scanning phased arrays.

Keywords

UHF antennas; antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; CP bandwidth; broad beamwidth stacked patch antenna; frequency 2.4 GHz; gain 3 dB; ground structure; radiation quality; rectangular shell; upper hemisphere; wide angle scanning phased array; wide circularly polarised bandwidth;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.3783

Filename

7006831