As a figure of merit for the receive performance of an antenna and receiver system, Gain over Temperature (G/T) drives the signal to noise performance of the communications system. In order to decrease antenna size and maintain G/T, the T term, which is the system noise temperature, must be lowered. We propose to study the feasibility of installing a C-band cryogenic cooled LNA with improved noise performance. We will concept a new, smaller antenna and define the weight savings realized with a smaller antenna and radome. If awarded the Phase I option, we will develop concept antenna pedestal designs with the optimal blend of composite and metal structures. The final size and weight budget will be used to develop concepts for alternate placement of the new multi-band antennas on the targeted ship class superstructures, out of the downwash zones of our latest naval aircraft.
Benefit: A new multi-band antenna that can replace the existing WSC-8 and FLV antennas is of great interest to the Navy. We would work with one of the SATCOM prime system integrators to license and complete the design for a future DoD procurement. The application of cryo-LNA for other antennas to reduce size and improve performance could also apply to US Air Force and commercial carriers for mounting on aircraft.
Keywords: Cryogenic LNA, Cryogenic LNA, multi-band antenna, composite antenna, SATCOM
