Circularly Polarized Patch Antenna for Future 5G Mobile Phones

IEEE Access

Kwai Man Luk¹  Chi Hou Chan¹  Hau Wah Lai²  Ka Ming Mak² 

[1] Department of Electronic EngineeringState Key Laboratory of Millimeter Waves, City University of Hong Kong, Hong Kong;State Key Laboratory of Millimeter Waves, City University of Hong Kong, Hong Kong;

关键词: Antenna radiation patterns;    microstrip patch antennas;    satellite antennas;   

DOI  :  10.1109/ACCESS.2014.2382111

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown