千兆赫低相噪声表面波振荡器  

Gigahertz Fundamental Frequency Low Phase Noise Surface Wave Oscillator

作　　者：陈书明 林恒[2] 王梁 CHEN Shuming;LIN Heng;WANG Liang(China Key System&Integrated Circuit Co.,Ltd.,Wuxi 214072,China;Wuxi Hope Microelectronics Co.,Ltd.,Wuxi 214072,China)

机构地区：[1]中科芯集成电路有限公司,江苏无锡214072 [2]无锡华普微电子有限公司,江苏无锡214072

出　　处：《电子与封装》2019年第11期44-47,共4页Electronics & Packaging

摘　　要：阐述了振荡器及声表面波双端口谐振器工作原理及影响振荡器相位噪声的因素,通过设计声表面波谐振器的输入/输出相位关系与放大器输入/输出相位关系相匹配,将谐振器完全接入振荡环路,既作为稳频元件又起到相位调节的作用,不用其他移相元件,提高了振荡环路的Q值,采用基频工作,保证了振荡电路相位噪声、谐波、杂波等关键指标,满足机载电子设备及大容量通信系统等对频率源的要求。The working principle of oscillator and surface acoustic wave(SAW) dual-port resonator is introduced. The resonator is fully connected to the oscillation loop by combining SAW resonator with loop amplifier. It not only acts as a frequency stabilizing element but also plays a role of phase adjustment. It uses fundamental frequency instead of other phase shifting elements to improve Q value of oscillation loop, ensures key indexes of oscillation circuit such as phase noise, harmonic wave and clutter, and meets the requirements of airborne electronic equipment and large-capacity communication system on frequency source.

关 键 词：声表面波谐振器 振荡器 Q值 相位噪声 

分 类 号：TN753.9[电子电信—电路与系统]