Title :
The electrical characteristics of a conical horn-reflector antenna employing a corrugated horn
Author :
Yassin, Ghassan ; Robson, Martin ; Duffett-Smith, Peter J.
Author_Institution :
Cavendish Lab., Cambridge Univ., UK
fDate :
3/1/1993 12:00:00 AM
Abstract :
The electrical properties of a conical horn-reflector antenna of 2-3° beamwidth have been investigated over the frequency range of 12-18 GHz. It is shown that the employment of a corrugated horn reduces the characteristic spillover side lobe of the conical horn-reflector antenna by 15 dB and yields excellent main beam circularity over the full Ku band. This results from the taper of the field amplitude toward the edges of the horn aperture in both the E-plane and the H-plane illumination. The performance of the antenna makes it suitable for use in closely packed interferometers for radio astronomy
Keywords :
antenna radiation patterns; horn antennas; microwave antennas; radiowave interferometers; reflector antennas; 12 to 18 GHz; E-plane illumination; H-plane illumination; Ku band; SHF; closely packed interferometers; conical horn-reflector antenna; corrugated horn; electrical characteristics; main beam circularity; radio astronomy; spillover side lobe; Antennas and propagation; Apertures; Diffraction; Electric variables; Frequency; Horn antennas; Optical reflection; Polarization; Radio astronomy; Reflector antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
