NASA NTRS · 19940009902
A Cryogenic Seven-Element HEMT Front End for DSS 13
Abstract
A cryogenically cooled Ka-band (33.6-GHz), seven-element front-end array for the DSN was built and tested. This system uses seven high electron mobility transistor (HEMT) low-noise amplifiers cooled by a two-stage closed-cycle refrigerator. All system components from the polarizers to the output isolators are cooled to a physical temperature between 18 and 35 K. The noise temperatures of the individual elements range from 64 to 84 K over a 2.75-GHz bandwidth.
Keep this discovery
J Bowen, D Neff. 1993-08-15. A Cryogenic Seven-Element HEMT Front End for DSS 13. https://ntrs.nasa.gov/citations/19940009902
Cite the original work for its findings. Save a collection to share your selection of sources.