Document Detail

Low noise, 0.4-3 GHz cryogenic receiver for radio astronomy.
MedLine Citation:
PMID:  25362437     Owner:  NLM     Status:  In-Data-Review    
We present the design and measurement of a radio telescope receiver front end cooled to 100 K physical temperature, and working over 400 MHz to 3 GHz frequency band. The system uses a frequency independent feed developed for operation as a feed for parabola using sinuous elements and integrated with an ultra-wideband low noise amplifier. The ambient temperature system is tested on the 43 m radio telescope in Green Bank, WV and the system verification results on the sky are presented. The cryogenic receiver is developed using a Stirling cycle, one stage cryocooler. The measured far field patterns and the system noise less than 80 K over a 5:1 bandwidth are presented.
R Gawande; R Bradley; G Langston
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  85     ISSN:  1089-7623     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  2014 Oct 
Date Detail:
Created Date:  2014-11-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  104710     Citation Subset:  IM    
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