Design of a dual-polarization circular aperture array antenna on hollow cavities

Author

Ito, Satoshi ; Suetsugu, Satoshi ; Hirokawa, Jiro ; Ando, Makoto

Author_Institution

Dept. of Electr. Eng., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2014

fDate

4-6 Aug. 2014

Firstpage

48

Lastpage

49

Abstract

The circularly polarized antenna using hexagonal radiating apertures was proposed, and the bandwidth for the axial ratio less than 3 dB was 6.4%. We have proposed the circular aperture array antenna for increasing the axial ratio bandwidth. In this paper, the design of the radiating part for the circular aperture array is presented. We analyze a 16×16-element antenna with the designed radiating part, the input part and the conventional feeding circuits. The axial ratio is less than 3 dB from 55 GHz to 65 GHz, and the bandwidth for VSWR less than 1.5 is 13.3%.

Keywords

aperture antennas; electromagnetic wave polarisation; millimetre wave antenna arrays; VSWR bandwidth; axial ratio; dual-polarization circular aperture array antenna; feeding circuits; frequency 55 GHz to 65 GHz; hexagonal radiating apertures; hollow cavities; Antenna arrays; Aperture antennas; Arrays; Bandwidth; Cavity resonators; Transducers; corporate-feed; dual circular polarization; orthomode transducer; waveguide slot array;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics (iWEM), 2014 IEEE International Workshop on

Conference_Location

Sapporo

Type

conf

DOI

10.1109/iWEM.2014.6963629

Filename

6963629