Circularly Polarized Patch Antenna for Future 5G Mobile Phones

Author

Ka Ming Mak ; Hau Wah Lai ; Kwai Man Luk ; Chi Hou Chan

Author_Institution

State Key Lab. of Millimeter Waves, City Univ. of Hong Kong, Hong Kong, China

Volume

2

fYear

2014

fDate

2014

Firstpage

1521

Lastpage

1529

Abstract

A circularly polarized patch antenna for future fifth-generation mobile phones is presented in this paper. Miniaturization and beamwidth enhancement of a patch antenna are the two main areas to be discussed. By folding the edge of the radiating patch with loading slots, the size of the patch antenna is 44.8% smaller than a conventional half wavelength patch, which allows it to be accommodated inside handsets easily. Wide beamwidth is obtained by surrounding the patch with a dielectric substrate and supporting the antenna by a metallic block. A measured half power beamwidth of 124° is achieved. The impedance bandwidth of the antenna is over 10%, and the 3-dB axial ratio bandwidth is 3.05%. The proposed antenna covers a wide elevation angle and complete azimuth range. A parametric study of the effect of the metallic block and the surrounding dielectric substrate on the gain at a low elevation angle and the axial ratio of the proposed antenna are presented.

Keywords

5G mobile communication; antenna radiation patterns; microstrip antennas; circularly polarized patch antenna; complete azimuth range; dielectric substrate; fifth-generation mobile phones; future 5G mobile phones; impedance bandwidth; metallic block; wide elevation angle; 5G mobile communication; Bandwidth; Dielectric substrates; Mobile communication; Mobile handsets; Patch antennas; Polarization; Antenna radiation patterns; beamwidth enhancement; microstrip patch antennas; satellite antennas; size reduction;

fLanguage

English

Journal_Title

Access, IEEE

Publisher

ieee

ISSN

2169-3536

Type

jour

DOI

10.1109/ACCESS.2014.2382111

Filename

6985762