Title :
Reflector secondary pattern boresight error predictions resulting from log periodic feed manufacturing tolerances
Author_Institution :
ViaSat Inc., Duluth, GA, USA
Abstract :
Reflector antenna boresight stability is dependent on maintaining desirable primary feed characteristics that include axial phase center stability and amplitude/phase symmetry. Secondary pattern boresight error predictions for a 60 foot diameter reflector are estimated for several types of fabrication tolerances for a UHF log periodic antenna (LPA) used as a prime focus feed. covering the 350 MHz - 2300 MHz band.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; log periodic antennas; reflector antennas; UHF LPA; UHF log periodic antenna; amplitude-phase symmetry; axial phase center stability; fabrication tolerance; frequency 350 MHz to 2300 MHz; log periodic feed manufacturing tolerance; reflector antenna boresight stability; reflector secondary pattern boresight error prediction; size 60 ft; Antenna feeds; Foot; Moment methods; Reflector antennas; Wires; Boresight Shift; Log Periodic Antenna; Reflector Antenna;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996408
