A Wideband Circularly Polarized H-Shaped Patch Antenna

Author

Chung, Kwok L.

Author_Institution

Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Hong Kong, China

Volume

58

Issue

10

fYear

2010

Firstpage

3379

Lastpage

3383

Abstract

A wideband H-shaped patch antenna for circular polarization is described. By incorporating a long probe inside a substantial high cavity (~ 0.26λ), a circularly polarized (CP) antenna in broadside direction is achieved. The horizontal arm of the probe is implemented by means of a printed monopole that is diagonally coupled to a small H-shaped copper plate. The CP antenna features a wide operational bandwidth of 19.4%. The maximum gain and the efficiency of this small antenna are recorded as >5 dBic and >80%, respectively, across the bandwidth. The dimension of the H-shaped patch is 0.3λ × 0.3λ whereas the ground plane size is 1.8λ × 1.8λ.

Keywords

broadband antennas; microstrip antennas; monopole antennas; polarisation; H-shaped patch antenna; circular polarization; monopole antenna; printed antenna; wideband antenna; Bandwidth; Broadband antennas; Copper; Dielectric losses; Dielectric substrates; Feeds; Patch antennas; Polarization; Probes; Receiving antennas; Axial-ratio bandwidth; H-shaped patch antenna; return-loss bandwidth; singly-fed circularly polarized antenna;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2010.2055794

Filename

5498941