Coplanar waveguide-fed circularly polarized microstrip antenna

Author

Huang, Chih-Yu ; Wong, Kin-Lu

Author_Institution

Dept. of Electron. Eng., Yung Ta Inst. of Technol., Pingtung, Taiwan

Volume

48

Issue

2

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

328

Lastpage

329

Abstract

Design of a square microstrip antenna for obtaining circular polarization (CP) radiation using a coplanar waveguide (CPW) feed is presented. This CP design is achieved by insetting a slit to the boundary of the square microstrip patch, which makes possible the splitting of the dominant resonant mode into two near-degenerate orthogonal modes for CP radiation and introducing an inclined slot in the CPW feed line for coupling the electromagnetic (EM) energy of the CPW to the square patch. Good impedance matching for CP operation can be obtained by adjusting the inclined slot length and the tuning-stub length of the CPW feed line. Typical experimental results are presented and discussed

Keywords

antenna feeds; coplanar waveguides; electromagnetic wave polarisation; impedance matching; microstrip antennas; slot antennas; CPW feed; coplanar waveguide-fed circularly polarized microstrip antenna; dominant resonant mode; electromagnetic energy; impedance matching; inclined slot; near-degenerate orthogonal modes; slit; square microstrip antenna; tuning-stub length; Antenna feeds; Coplanar waveguides; Electromagnetic coupling; Electromagnetic radiation; Electromagnetic waveguides; Impedance matching; Microstrip antennas; Polarization; Resonance; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.833083

Filename

833083