High temperature super-conducting(HTS) C-band oscillator with phase noise of -134 dBc/Hz

作     者：LI Hong HE Aisheng SHI Tiefeng GONG Zhonglin LI Shunzhou SUN Yongwei HE Yusheng 

作者机构：Institute of PhysicsChinese Academy of SciencesBeijing 100080China North University of TechnologyBeijing 100141China Beijing Institute of Radio MeasurementBeijing 100080China Department of ElectronicsPeking UniversityBeijing 100871Giina Institute of AcousticsChinese Academy of SciencesBeijing 100080China Chongqing UniversityChongqing 400044China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2002年第47卷第5期

页      面：422-424页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

主　　题：HTS cavity resonator low phase noise HTS local oscil-lator. 

摘      要：A high Q HTS cavity resonator with resonating frequency f0=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 QU=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.