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X-Band Ultra-Low Noise Maser Amplifier Performance

Show simple item record Glass, G. en_US Johnson, D. en_US Ortiz, G. en_US 2004-10-06T02:45:24Z 2004-10-06T02:45:24Z 1993-05-16 en_US
dc.identifier.citation Honolulu, Hawaii, USA en_US
dc.identifier.clearanceno 93-0927 en_US
dc.description.abstract Noise temperature measurements of an 8440 MHz ultra-low noise maser amplifier (ULNA) have been performed at sub-atmospheric, liquid helium temperatures. The traveling wave maser operated while immersed in a liquid helium bath. The lowest input noise temperature measured was 1.23 plus or minus 0.16 K at a physical temperature of 1.60 kelvin. At this physical temperature the observed gain per unit length of ruby was 4.6 dB/cm, and the amplifier had a 3 dB-bandwidth of 76 MHz. en_US
dc.format.extent 631431 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject.other ultra-low noise maser amplifier X-band maser system en_US
dc.title X-Band Ultra-Low Noise Maser Amplifier Performance en_US

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