| 引用本文: | 单庆晓,Jean Michel le Floch,范耀辉,等.单层反射模式蓝宝石腔体的9.7GHz频率基准.[J].国防科技大学学报,2014,36(4):124-128.[点击复制] |
| SHAN Qingxiao,Jean Michel le Floch,FAN Yaohui,et al.9.7GHz oscillator based on single sapphire layer loaded cavity at reflect mode[J].Journal of National University of Defense Technology,2014,36(4):124-128[点击复制] |
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| 单层反射模式蓝宝石腔体的9.7GHz频率基准 |
| 单庆晓1,2, Jean Michel le Floch3, 范耀辉3, Michael Tobar3 |
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(1.国防科技大学 机电工程自动化学院，湖南 长沙 410073;2.
2.澳大利亚 西澳大学 物理系，珀斯 WA6009
;3.2.澳大利亚 西澳大学 物理系，珀斯 WA6009)
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| 摘要: |
| 分析了多层圆柱形蓝宝石腔体谐振器为实现Bragg谐振模式需满足的尺寸条件。仿真并设计了单层腔体，利用teflon支撑件将蓝宝石固定在内部镀银的金属腔体内。其在9.7GHz频点实现了Bragg包含模式，Q值高于200 000。利用该谐振器作为带通滤波器构建了室温下的X波段振荡器。该振荡器还包括低噪放、滤波器和手动移相器。通过合理选择谐振器的插入损耗和调节移相器，该振荡器成功实现了稳定输出。测试结果表明，该振荡器具有低的相位噪声但易受环境温度影响。由于采用了极高Q值的蓝宝石谐振器，该振荡器可能成为目前最低相噪的X波段室温频率基准。 |
| 关键词: 蓝宝石 频率基准 Bragg模式 X波段 |
| DOI：10.11887/j.cn.201404021 |
| 投稿日期：2013-12-23 |
| 基金项目:国家自然科学基金资助项目（11373075） |
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| 9.7GHz oscillator based on single sapphire layer loaded cavity at reflect mode |
| SHAN Qingxiao1,2, Jean Michel le Floch3, FAN Yaohui3, Michael Tobar3 |
|
(1. National University of Defense Technology, Changsha 410073, China;2.
2.The University of Western Australia, WA6009, Australia
;3.2.The University of Western Australia, WA6009, Australia)
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| Abstract: |
| The dimension condition of multilayer cylinder sapphire-loaded-cavity resonator to meet the requirement of Bragg mode was analyzed. The single layer cavity was simulated and designed and the Teflon support was used to fix the sapphire in the inner-silver-plated cavity. A test showed that the Bragg mode is realized at 9.7GHz and the quality value is greater than 200,000. The Bragg mode is being used as band pass filter to build X band oscillator, which includes low noise amplify, filter and mechanical phase shifter. The oscillator realized stabilization by choosing proper insert loss and adjusting phase shifter. A secibd test showed that the oscillator has low phase noise output and is vulnerable to environment temperature. As ultra high quality value sapphire resonator is being used, the oscillator has the potential to be the state-of-art X band frequency standard with lowest phase noise at room temperature. |
| Keywords: sapphire frequency standard reflect mode X band |
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