【作者】 袁慧超； 陈尚松； 孟醒；

【Author】 Yuan Huichao Chen Shangsong MengXing(Guilin University Electronic Technology School of Electronic Engineering Guilin 541004 China)

【机构】 桂林电子科技大学电子工程学院；

【摘要】 微波源是现代微波系统的核心器件之一,微波源的相位噪声决定了整个系统的相位噪声水平。本文应用脉冲倍频锁相环和介质振荡器对2856MHz低相噪微波源进行了研究。阐述了微波源中相位噪声概念,并简要介绍了脉冲倍频技术和介质振荡器,对制成的样品进行了测试,达到了预期的相位噪声指标-110 dBc/Hz-20KHz。本文中介绍的利用脉冲倍频技术和介质振荡器技术设计的锁相介质振荡器具有相位噪声低、体积小、Q值高、频率温度稳定性好等优点,并且频率范围大(可达毫米波段)在微波电路中得到广泛的应用。更多还原

【Abstract】 Microwave source is the core of a modem microwave system,and the phase noise of which decides the noise level of the whole system.The conception of phase noise of a microwave source is described,and the research of a 2856MHz microwave source with low phase noise is presented in this paper.Using the technique of Pulse Multiple-frequency Phase-locked loops and Dielectric Resonator Oscillators,the sample is manufactured, and the measurement of phase noise well matches the requirement of-110 dBc/Hz-20KHz.The low phase noise locking phase oscillator introduced in this paper has the advantages of low noise,small volume,high Q value, stable frequency temperature and wide frequency area,which can be widely used in the microwave circuit.更多还原