Title :
An EHF omnidirectional lens antenna
Author :
Lee, E.A. ; Hwang, Y.M.
Author_Institution :
Ford Aerosp. Corp., Palo Alto, CA, USA
Abstract :
A shaped reflector antenna, illuminated by a corrugated horn, has been designed, fabricated, and tested. The test results show that the feed blockage and the strut support blockage cause performance degradation. The deficiency can be corrected by using a shaped lens, illuminated by a corrugated horn. The lens antenna avoids both the feed and the strut blockage. The lens surface is shaped to provide a nearly uniform coverage over a +or-90 degrees cone. A good axial ratio at 44 GHz is achieved by designing the corrugated horn with nearly equal E- and H-plane patterns.<>
Keywords :
directive antennas; microwave antennas; reflector antennas; waveguide antennas; E-plane patterns; EHF omnidirectional lens antenna; H-plane patterns; axial ratio; corrugated horn; feed blockage; lens antenna; lens surface; performance degradation; shaped lens; shaped reflector antenna; strut support blockage; test results; Cardiology; Corrugated surfaces; Feeds; Lenses; Optical design; Polarization; Slot antennas; Space vehicles; Telemetry; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.135034
