Design of a small and low-profile 2×2 hemispherical helical antenna array for mobile satellite communications

Author

Hui, H.T. ; Yung, Edward K N ; Law, C.L. ; Koh, Y.S. ; Koh, W.L.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

52

Issue

1

fYear

2004

Firstpage

346

Lastpage

348

Abstract

A small and low-profile 2×2 hemispherical helical antenna array was designed for INMARSAT satellite reception. With only four elements fed by a simple network, the array can produce a gain of 15 dB, a 3-dB axial ratio bandwidth of nearly 14%, a cross-polarization level of smaller than -20 dB over the half-power beamwidth, and a radiation pattern with a sidelobe level of -20 dB. These characteristics are better than those obtained by previously proposed INMARSAT-M antennas.

Keywords

antenna arrays; antenna radiation patterns; electromagnetic wave polarisation; helical antennas; mobile satellite communication; 15 dB; 2×2 hemispherical helical antenna array; INMARSAT satellite reception; axial ratio bandwidth; circular polarization; cross-polarization level; half-power beamwidth; mobile satellite communication; radiation pattern; sidelobe level; small low-profile helical antenna array; Antenna arrays; Antenna radiation patterns; Bandwidth; Gain; Helical antennas; Mobile antennas; Polarization; Satellite antennas; Satellite communication; Vehicles;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2003.822410

Filename

1268336