Chinese Science Bulletin

, Volume 47, Issue 5, pp 423–425 | Cite as

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

  • Hong Li
  • Aisheng He
  • Tiefeng Shi
  • Zhonglin Gong
  • Shunzhou Li
  • Yongwei Sun
  • Yusheng He
Notes
  • 11 Downloads

Abstract

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 Q u= 1.09xl06 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.

Keywords

HTS cavity resonator low phase noise HTS local oscillator 

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References

  1. 1.
    Leeson, D. B., A simple model of feedback oscillator noise spectrum, Proc. IEEE, 1966, 54: 329.CrossRefGoogle Scholar
  2. 2.
    Robins, W. P., Phase Noise in Signal Sources (in Chinese), Publishing House of People’s Post and Telecommunication, 1998, 60.Google Scholar
  3. 3.
    Shen, Z. Y., Pang, P., Wilker, C. et al., High Tc superconductor and III-V solid state microwave hybrid circuits, IEEE Trans, Appl. Supercond., 1993, 3: 2832.CrossRefGoogle Scholar
  4. 4.
    Negrete, G. V., Term, K., An ultra-low-noise millimeter-wave oscillator using sapphire disk resonator and high-temperature superconductor ground plant, Microwave and Optical Tech. Lett., 1993, 16: 758.CrossRefGoogle Scholar
  5. 5.
    Button, T. W., Smith, P. A. Alford, N. M. et al., HTS cavities for low phase noise oscillator applications, IEEE. Trans., Appl. Supercond., 1997, 2: 3064.CrossRefGoogle Scholar
  6. 6.
    Hakki, B. W., Coleman, P. D., A dielectric resonator method of measuring induced capacities in the milliwave range, IRE Tranas, Microwave Theory and Techniques, 1960, 8: 402.CrossRefGoogle Scholar
  7. 7.
    Kobayashi, Y., Tanaka, S., Resonant models of a dielectric rod resonator short-circuited at both ends by parallel conducting plates, IEEE Trans., 1980, MTT-28: 1077.Google Scholar

Copyright information

© Science in China Press 2002

Authors and Affiliations

  • Hong Li
    • 1
    • 6
  • Aisheng He
    • 1
    • 2
    • 6
  • Tiefeng Shi
    • 1
    • 3
    • 6
  • Zhonglin Gong
    • 4
    • 6
  • Shunzhou Li
    • 1
    • 5
    • 6
  • Yongwei Sun
    • 1
    • 5
    • 6
  • Yusheng He
    • 1
    • 6
  1. 1.Institute of PhysicsChinese Academy of SciencesBeijingChina
  2. 2.North University of TechnologyBeijingChina
  3. 3.Beijing Institute of Radio MeasurementBeijingChina
  4. 4.Department of ElectronicsPeking UniversityBeijingChina
  5. 5.Institute of AcousticsChinese Academy of SciencesBeijingChina
  6. 6.Chongqing UniversityChongqingChina

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