Sapphire loaded cavity microwave oscillator with improved temperature stability

被引：0
|
作者：
Tsarapkin, DP [1 ]
Shtin, NA [1 ]
机构：
[1] Tech Univ, Moscow Power Engn Inst, Radio Engn Fac, Moscow, Russia
来源：
PROCEEDINGS OF THE 2002 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM & PDA EXHIBITION | 2002年
关键词：
dual-mode resonator; frequency instability; infrared heater; microwave oscillator; temperature stabilization; whispering gallery mode;
D O I：
10.1109/FREQ.2002.1075947
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Poor frequency-temperature stability of sapphire "whispering gallery" resonators (SWGR) is a main drawback of modern ultra-low phase noise room-temperature microwave sources using such resonators. This paper describes a novel dual-mode oscillator temperature control network where an auxiliary RF reference signal is formed by output frequency division. It eliminates the additional RF source and simplifies the oscillator on the whole. The completed temperature stabilizing system looks basically like a familiar noise suppression circuit with that differences its frequency discriminator operates now at the second SWGR's mode and a control signal governs the temperature. A variable infrared heater is suggested to improve dynamic characteristics of the temperature control. Estimation shows that in such configuration the fractional frequency instability of the order of 5.10(-13) for measurement intervals from 1 to some hundred seconds is possible.
引用
收藏
页码：572 / 579
页数：8
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