Title :
Control of Antenna Beam Width
Author :
Kriz, Josef ; Krcmar, Vitezslav ; Pidanic, Jan ; Schejbal, Vladimir
Author_Institution :
Retia, Pardubice
Abstract :
Several methods controlling antenna beam- widths are briefly proposed for aperture widths approximately equal to one wavelength, which can be used as primary feeds to create the fan beams of radar antennas. The mouth modifications can improve the radiation patterns and input impedance matching. It is possible to narrow radiation pattern, and therefore to increase the gain. On the other hand, similar modifications are advantageous for dual orthogonal polarization or octave frequency bandwidth operations of aperture antennas such as horns. The proposed modifications have been performed for hoghorn. The measurements of conventional and modified hoghorn designs are compared in detail.
Keywords :
antenna feeds; antenna radiation patterns; aperture antennas; horn antennas; impedance matching; polarisation; radar antennas; antenna beam width control; aperture antennas; dual orthogonal polarization; impedance matching; modified hoghorn design; mouth modifications; octave frequency bandwidth operation; primary feeds; radar antennas; radiation patterns; Antenna feeds; Antenna radiation patterns; Aperture antennas; Bandwidth; Frequency; Horn antennas; Impedance matching; Mouth; Polarization; Radar antennas; Radar antennas; hoghorns; primary feeds;
Conference_Titel :
Microwave Techniques, 2008. COMITE 2008. 14th Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4244-2137-4
Electronic_ISBN :
978-1-4244-2138-1
DOI :
10.1109/COMITE.2008.4569934
