Dual circular polarization of tilted beam by a single arm rectangular spiral antenna

Author

Jung, Chang Won ; De Flaviis, Franco

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Irvine, CA, USA

Volume

1

fYear

2004

fDate

20-25 June 2004

Firstpage

795

Abstract

A single-arm rectangular spiral antenna has been investigated to obtain dual circular polarization of a tilted beam. The proposed rectangular spiral antenna is printed on a finite size dielectric substrate (ε_r=3.27) backed by a finite size conducting plane. Spiral arm length (L) is varied from L=0.99λ_o to L=4.06λ_o to choose the length that yields the proper axial ratio and gain. L is chosen to be two values: L₁=1.05λ_o and L₂=3.35λ_o. L₁ radiates an axial beam and L₂ radiates a tilted beam. The spiral radiates right hand circular polarization (RHCP) in its axial beam (L₁=1.05λo) due to the winding sense. In addition, the spiral radiates dual circular polarization (RHCP and LHCP) at its tilted beam (L₂=3.35λ_o) in one antenna element.

Keywords

antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; spiral antennas; 10 GHz; LHCP; RHCP; axial beam; axial ratio; conducting plane; dielectric substrate; dual circular polarization; printed antenna; radiation gain pattern; radiation pattern; single arm rectangular spiral antenna; tilted beam; Bandwidth; Coaxial components; Computational modeling; Dielectric substrates; Directive antennas; Frequency; Permittivity; Polarization; Spirals; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1329790

Filename

1329790