Title :
A crank-line array antenna radiating a circularly polarized wave
Author :
Hirose, K. ; Nkano, H.
Author_Institution :
Coll. of Sci. & Eng., Tokyo Denki Univ., Saitama, Japan
fDate :
12/1/1997 12:00:00 AM
Abstract :
An array antenna composed of crank-line elements is investigated on the basis of the element current distributions determined by the method of moments. A technique of gradually increasing the antenna height above the ground plane is adopted to enhance the gain. It is found both numerically and experimentally that a gain of approximately 30 dB is obtained with an axial ratio of less than 3 dB over a frequency bandwidth of 2.5%
Keywords :
antenna arrays; antenna radiation patterns; current distribution; electromagnetic wave polarisation; method of moments; antenna height; circularly polarized wave; crank-line array antenna; element current distributions; frequency bandwidth; gain; ground plane; method of moments; Antenna arrays; Antennas and propagation; Computational geometry; Dielectric substrates; Dipole antennas; Moment methods; Polarization; Surface impedance; Transmission line matrix methods; Wire;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
