Title :
A new broadband short-backfire antenna as a prime focus feed single and dual band
Author :
Srikanth, Sivasankaran ; Behrens, G.
Author_Institution :
Nat. Radio Astron. Obs., Charlottesville
Abstract :
A design by Ohmori et al. (1983) of a short-backfire antenna used in the Green Bank Telescope at the National Radio Astronomy Observatory is the basis for the design presented in this paper. The current design shows small variation in beamwidth as a function of frequency, good circular symmetry of the beam and return loss better than -13 dB over the entire 30% band. A concept of a dual-band version of the SBA at 342/800 MHz has been tested. Such a feed would facilitate pulsar observations at the two bands simultaneously.
Keywords :
antenna radiation patterns; pulsars; radioastronomy; radiotelescopes; Green Bank Telescope; National Radio Astronomy Observatory; broadband short-backfire antenna; dual band; frequency 342 MHz; frequency 800 MHz; prime focus feed; pulsar observations; single band; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Dual band; Extraterrestrial measurements; Frequency; Observatories; Radio astronomy; Shape;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4396338
