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| Development of Ultra Stable Oscillators for K Band Ranging System |
| QIN Yu-hao,YANG Lei,WANG Jiang-ping,JIANG Ming-nan,ZHONG Xing-wang |
| China Academy of Space Technology, Xi’an, Shaanxi 710100, China |
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Abstract Based on the study of working principle of ultra stable oscillators, the ultra stable oscillators design scheme is proposed. According to low noise Pierce circuit, high precision temperature control circuit, precision double oven structure, the high Q value SC cut crystal resonator, the 4.832099MHz ultra stable oscillators for K band ranging system was made. On analysis of the short-term stability and phase noise measurement method, the ultra stable oscillators test result of the short-term stability(Allan deviation) in 2s is 2×10-13 and its phase noise at 1Hz is -122dBc/Hz.
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2015, Vol. 36 
