Title :
An efficient representation of radiation from a circular aperture with quadratic phase error
Author :
Sun, E.-Y. ; Rusch, W.V.T.
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
The authors derive an efficient series representation for I/sub pab/, a quadratic-phase integral commonly encountered in aperture-antenna theory. The accuracy and efficiency of the series formula relative to ordinary numerical integration are discussed. The formula may be effective in calculating the effect of quadratic-phase error on the gain and beamwidth characteristics of a radiation pattern, the field in the Fresnel region, on-axis defocus characteristics of the paraboloidal reflector, and the shadow region correction field due to a disk-shaped obstacle in front of a large aperture (such as a reflector).<>
Keywords :
antenna radiation patterns; antenna theory; integral equations; Fresnel region; antenna radiation patterns; aperture-antenna theory; beamwidth; circular aperture; disk-shaped obstacle; gain; on-axis defocus characteristics; paraboloidal reflector; quadratic phase error; quadratic-phase integral; series formula; series representation; shadow region correction field; Acceleration; Antenna radiation patterns; Apertures; Computer errors; Error correction; Gaussian processes; Mathematics; Microwave antennas; Microwave theory and techniques; Student members;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.135025
