CAJ | 학술논문

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9．7 GHz频点实现了Bragg包含模式，Q值高于200000。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。
분석료다층원주형람보석강체해진기위실현Bragg해진모식수만족적척촌조건。방진병설계료단층강체，이용teflon지탱건장람보석고정재내부도은적금속강체내。기재9．7 GHz빈점실현료Bragg포함모식，Q치고우200000。이용해해진기작위대통려파기구건료실온하적X파단진탕기。해진탕기환포괄저조방、려파기화수동이상기。통과합리선택해진기적삽입손모화조절이상기，해진탕기성공실현료은정수출。측시결과표명，해진탕기구유저적상위조성단역수배경온도영향。유우채용료겁고Q치적람보석해진기，해진탕기가능성위목전최저상조적X파단실온빈솔기준。
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.