CAJ | 학술논문

在精密标准频率控制仪器中，常常需要既能在宽频率范围调节又能够保持高频率稳定度和低相位噪声的可控晶体振荡器。为了实现宽频率范围调节，不得不采用拉动性好但是稳定度和老化率较差的基频晶体振荡器。虽然基于 SC切泛音晶体的高精度恒温控制晶体振荡器(OCXO)显现出非常高的频率稳定度和低老化率，但是它的电压控制频率调节范围很窄，无法在锁相受控的情况下使用。针对更宽的频率调节范围，笔者提出一种新的方法，即通过对温度控制来调节 OCXO 的频率。所有精密 OCXO 的良好性能都可以保持下来，同时，原来的10-7量级电压可控频率范围提高到5×10-6量级或者更宽。这样就能够在需要长期稳定锁定的频率源，如星载的原子钟中得到应用，保证了系统稳定优良的指标。
재정밀표준빈솔공제의기중，상상수요기능재관빈솔범위조절우능구보지고빈솔은정도화저상위조성적가공정체진탕기。위료실현관빈솔범위조절，불득불채용랍동성호단시은정도화노화솔교차적기빈정체진탕기。수연기우 SC절범음정체적고정도항온공제정체진탕기(OCXO)현현출비상고적빈솔은정도화저노화솔，단시타적전압공제빈솔조절범위흔착，무법재쇄상수공적정황하사용。침대경관적빈솔조절범위，필자제출일충신적방법，즉통과대온도공제래조절 OCXO 적빈솔。소유정밀 OCXO 적량호성능도가이보지하래，동시，원래적10-7량급전압가공빈솔범위제고도5×10-6량급혹자경관。저양취능구재수요장기은정쇄정적빈솔원，여성재적원자종중득도응용，보증료계통은정우량적지표。
When precision standard frequency control devices are used,we always need controllable crystal oscillators that not only can be regulated in a wide frequency range,but also can maintain high frequency stability and low phase noise.In order to realize the wide frequency range,we have to use the crystal oscillator which shows good pull ups,but at the same time poor frequency stabilities and aging.High precision Oven-Controlled Crystal Oscillator(OCXO) based on SC cut overtone crystals can show very high frequency stability and low aging.However,its frequency regulation range by voltage control is not wide. When it is phase locked and controllable,it can not be used.In connection with a wider frequency regulation range,a new method is proposed through the regulation of the control temperature of the OCXO.In this way,all the good performances of the precision OCXO can be kept,and the original 10-7 order voltage-controllable frequency range is improved to 5×10-6 or even wider at the same time.Then it can be used in the frequency source which needs to be stably locked for a long time such as an on-board atomic clock,to ensure the stable and excellent indexes of the system.