Title :
Main-beam polarization properties of modified helical antennas
Author :
Kraft, Ulrich R. ; Monich, Gerhard
Author_Institution :
Inst. fuer Hochfrequenztech., Tech. Univ. Berlin, West Germany
fDate :
5/1/1990 12:00:00 AM
Abstract :
The polarization properties of modified helical antennas are investigated for a wide range of directions using a two-dimensional polarization diagram. The current distribution on the antenna and the radiated field are calculated for several variations of the antenna shape to show the influences of the helix design on the main-beam polarization characteristics. This extended knowledge about typical polarization diagrams yields conditions for the antenna design. Special emphasis is placed on the choice of the geometrical parameters for the open end and the feed region of the antenna to meet different system requirements. The calculated results are confirmed with measured polarization characteristics and radiation patterns for experimental helices
Keywords :
antenna radiation patterns; antenna theory; current distribution; electromagnetic wave polarisation; current distribution; helical antennas; helix design; main-beam polarization characteristics; radiated field; radiation patterns; two-dimensional polarization diagram; Antenna feeds; Antenna measurements; Antenna radiation patterns; Current distribution; Directive antennas; Distortion measurement; Helical antennas; Polarization; Satellite antennas; Shape measurement;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
