%0 Journal Article
%T High temperature super-conducting (HTS) C-band oscillator with phase noise of -134 dBc/Hz<br>
%A LI Hong
%A <br>
%J 科学通报(英文版)
%D 2002
%I 
%X A high Q HTS cavity resonator with resonating frequency fo = 5.624 GHz was fabricated using high quality HTS film and high purity sapphire. The unloaded quality factor of the HTS resonator was as high as Qt = 1.09×106 at the nitrogen temperature, 77 K. A HTS local oscillator combining the high Q cavity resonator with a C-band low noise GaAs HEMT amplifier was then designed and constructed.The phase noise of the oscillator, measured by a HP 3048A noise measurement system, is -134 dBc/Hz at 10 kHz offset when the temperature is 77 K. This result is close to the best level reported by other groups in the world.
%K HTS cavity resonator
%K low phase noise
%K HTS local oscillator<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=8D3337FBC964FE3750239D7C806ABF34&yid=C3ACC247184A22C1&vid=F4B561950EE1D31A&iid=94C357A881DFC066&sid=B941678158018439&eid=D1D63D047E37A053&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=7