基于Push-Push结构的倍频器在铷原子频标中的应用

铷原子频标是各种原子频标中发展最为活跃的 ,由于其独特的外在及内在的特点 ,使其在商业通信、空间导航等领域得到最为广泛的应用。在铷原子频标中 ,倍频电路是影响整个系统长期稳定性的重要因素之一。简要介绍了Push -Push结构的基本原理 ,并且给出了基于Push -Push结构的倍频器的具体实现电路与仿真结果。仿真实验结果表明 ,该种结构设计对改善电路的相位噪声是有十分有效的。最后分析了影响幅度调制噪声与相位调制噪声的因素 ,对上述电路做了进一步的完善。

Application of Doubler Based on Push-Push Configuration in Ru Atomic Frequency Standard

Rubidium frequency standard is the most active element in the development of atomic frequency standard. Because of its inherent and acquired characteristics, the rubidium clock has widely application in commercial communication and aerospace satellite navigation, etc. In the Ru atomic frequency standard, the multiplier is one of the most important elements which contribute fundamentally to long time stability performance of atomic frequency standard. Firstly this paper introduces the principle of the push-push configuration, then presents the practical implementation of the push-push doubler and its simulation results. Extensive simulation results prove that this configuration works effectively to improve the phase noise of system. At last we continue to analyses the element which caus AM noise and PM noise in the circuit, then perfect above circuit.