Title :
Parametric study on conical log-spiral antenna
Author_Institution :
Dept. of Electromagn. Field, Czech Tech. Univ. in Prague, Prague
Abstract :
The paper investigates conical shapes of log-spiral antenna in the radiation pattern and the frequency independences of gain and axial ratio. Parametric study is based on numerical modelling using FEKO simulator. Unidirectional radiation pattern appears only at the lowest working frequency for a wider cone angle or appears wideband for the cone angle lower than 20deg. The 3 dB beamwidth strongly depends on a cone angle and a rate of wrap, and ranges from 80 to 200deg.
Keywords :
antenna radiation patterns; conical antennas; numerical analysis; spiral antennas; FEKO simulator; antenna radiation pattern; axial ratio; cone angle; conical log-spiral antenna; gain ratio; numerical modelling; Antenna measurements; Antenna radiation patterns; Dielectric measurements; Frequency; Impedance; Mathematical model; Numerical models; Parametric study; Spirals; Wideband;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
