Cavity backed four-arm slot like spiral antenna for dual mode operation

Author

Bhobe, A.U. ; Filipovic, D.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA

Volume

2

fYear

2003

fDate

22-27 June 2003

Firstpage

165

Abstract

Two different types of cavity backed four-arm slot like spiral antennas, fed through a metal backed coplanar waveguide (CPW), are presented in this paper. The spiral antennas are designed to operate between 1 and 3 GHz for normal (broadside) beam and split mode operation. A finite element - boundary integral (FE-BI) code is used to numerically analyze various antenna parameters. The antennas are built on a dielectric substrate with permittivity 2.2 and thickness of 0.0787 cm to fit in an 8.16/spl times/8.16/spl times/1.5 cm/sup 3/ cavity. Measured and computed data are presented and generally good agreement was obtained.

Keywords

UHF antennas; antenna feeds; boundary integral equations; broadband antennas; coplanar waveguides; finite element analysis; multifrequency antennas; slot antennas; spiral antennas; 0.0787 cm; 1 to 3 GHz; 1.5 cm; 8.16 cm; CPW; FE-BI; broadside beam operation; cavity backed spiral antenna; dielectric substrate; dual mode operation; finite element-boundary integral code; four-arm slot like spiral antenna; metal backed coplanar waveguide feed; split mode operation; wideband antennas; Arm; Coplanar waveguides; Costs; Dielectric substrates; Feeds; Frequency; Impedance matching; Military communication; Slot antennas; Spirals;

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.2003.1219204

Filename

1219204