A small size circularly polarized annular microstrip antenna

Author

Tamakuma, K. ; Iwasaki, H.

Author_Institution

Fac. of Syst. Eng., Shibaura Inst. of Technol., Saitama, Japan

Volume

2

fYear

2003

fDate

22-27 June 2003

Firstpage

716

Abstract

A circularly polarized antenna with a low profile, small size, and light weight is required in mobile communication and wireless LAN systems. The purpose of this paper is to propose a small size circularly polarized annular microstrip antenna with a strip line in the inner circle. The proposed annular patch antenna can achieve circular polarization without the need for a 90/spl deg/ hybrid coupler. The calculated results using an electromagnetic simulator are described to demonstrate the usefulness of the proposed antenna configuration. Good impedance and axial ratio characteristics are realized.

Keywords

electromagnetic wave polarisation; microstrip antennas; microstrip lines; mobile communication; wireless LAN; annular microstrip antenna; circular polarization; circularly polarized antenna; inner circle strip line; mobile communications; patch antenna; small size microstrip antenna; wireless LAN systems; Antenna feeds; Bandwidth; Broadband antennas; Finite element methods; Impedance; Microstrip antennas; Mobile antennas; Patch antennas; Polarization; Slot antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1219336

Filename

1219336