Title :
Focal plane beam synthesis method for dielectric lens antennas
Author :
Chan, K.K. ; Gimersky, M. ; Pokuls, R.
Author_Institution :
Chan Technols. Inc., Kirkland, Que., Canada
Abstract :
The thin spherical dielectric lens is an ideal multiple beam communications satellite antenna operating in the millimetre wave band. Typically, tens to hundreds of simultaneous closely-spaced beams are required. The design goal is to maximise edge-of-coverage gain that is consistent with low alternate beam copolar and crosspolar interference. Each beam is generated by a cluster of feed horns with excitations formed by a low-level beamforming network. The objective here is to develop an efficient procedure for determining the optimum locations, excitations and size of the feeds. The method of focal plane beam synthesis is proposed.
Keywords :
antenna feeds; antenna radiation patterns; dielectric devices; electromagnetic wave polarisation; horn antennas; lens antennas; millimetre wave antennas; multibeam antennas; radiofrequency interference; satellite antennas; dielectric lens antennas; edge-of-coverage gain; feed excitations; feed horns cluster; feed size; focal plane beam synthesis method; low alternate beam copolar interference; low alternate beam crosspolar interference; low-level beamforming network; millimetre wave band; multiple beam communications satellite antenna; optimum locations; thin spherical dielectric lens; Apertures; Artificial satellites; Dielectrics; Feeds; Interference; Lenses; Millimeter wave technology; Optical scattering; Optical surface waves; Satellite antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631590
