Title :
A wide-band prime-focus horn for low-noise receiver applications
Author :
Thomas, B. Maca ; Greene, K.J. ; James, G.L.
Author_Institution :
Div. of Radiophys., CSIRO, Epping, NSW, Australia
fDate :
11/1/1990 12:00:00 AM
Abstract :
A horn suitable for a prime-focus antenna requiring low cross polarization, wide bandwidth, and low spillover is described. The design is particularly suited for low-noise applications such as high-quality satellite earth-station antennas and radio telescopes. The horn has a return loss substantially better than 20 dB, a cross polar sidelobe level better than -20 dB, a beamwidth variation of 40% and negligible phase center shift
Keywords :
directive antennas; radiotelescopes; receiving antennas; satellite antennas; satellite ground stations; beamwidth variation; cross polar sidelobe level; design; low cross polarization; low spillover; low-noise receiver; phase center shift; prime-focus antenna; radio telescopes; return loss; satellite earth-station antennas; wide bandwidth; wideband prime focus horn; Antennas and propagation; Eigenvalues and eigenfunctions; Electromagnetic diffraction; Electromagnetic propagation; Electromagnetic scattering; Microwave antenna arrays; Microwave propagation; Physical theory of diffraction; Radar antennas; Wideband;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
