Title :
Design and implementation of a low-noise prime-focus S/X receiver system for radio astronomy
Author :
Norrod, Roger D. ; Behrens, George H., Jr. ; Ghigo, Frank D. ; Levin, Burton J.
Author_Institution :
Nat. Radio Astron. Obs., Green Bank, WV, USA
fDate :
5/1/1994 12:00:00 AM
Abstract :
This paper discusses the design, construction, and measured performance of dual-band, dual-polarization, prime focus receiver systems used on three antennas at the NRAO facility in Green Bank, WV. The receivers operate at Sand X-bands near 2.3 and 8.4 GHz. Described is the development of a new dualband feed horn, a cryogenics package with waveguide input ports using HEMT low-noise amplifiers, and a receiver system using optical fiber microwave links to transmit frequency reference and IF signals. Measured performance of major components and the overall installed system is given
Keywords :
antenna feeders; horn antennas; low-temperature techniques; optical links; radio receivers; radiotelescopes; radiowave interferometers; reflector antennas; 2.3 GHz; 8.4 GHz; Green Bank; HEMT low-noise amplifiers; IF signals; NRAO facility; S-band; SHF; UHF; X-band; construction; cryogenics package; dual-band dual-polarization prime focus receiver systems; dualband feed horn; frequency reference signals; low-noise prime-focus S/X receiver system; optical fiber microwave links; performance; radio astronomy; waveguide input ports; Antenna measurements; Cryogenics; Dual band; Feeds; HEMTs; Low-noise amplifiers; Optical receivers; Optical waveguides; Packaging; Receiving antennas;
Journal_Title :
Proceedings of the IEEE
