Title :
Pyramidal horns. I. Simple expressions for directivity as a function of aperture phase error
Author_Institution :
Sandia Nat. Lab., Albuquerque, NM, USA
Abstract :
New expressions for the gain-reduction factors of a pyramidal horn are developed. They offer fast and accurate computation of the horn directivity, in either linear of second-order form. These equations are much easier to evaluate than the exact equations, which involve complicated Fresnel integrals. The formulas are expressed in terms of gain-reduction factors, based on the quadratic phase errors in the aperture.<>
Keywords :
antenna radiation patterns; directive antennas; waveguide antennas; aperture phase error; equations; gain-reduction factors; horn directivity; pyramidal horn; quadratic phase errors; second-order form; Antenna measurements; Antenna theory; Aperture antennas; Fresnel reflection; Gain measurement; Horn antennas; Integral equations; Laboratories; Physics; Polarization;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134987
