振荡器基极电阻引起的相位噪声分析  

Analysis on Phase Noise Caused by Base Resistance in LC Oscillator

作　　者：肖遥[1] 王军[1] 邓春艳[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621010

出　　处：《通信技术》2012年第10期98-100,共3页Communications Technology

摘　　要：随着近几年无线通讯系统的蓬勃发展,推动了无线收发机的研究与开发。振荡器是无线收发机的关键模块,作为收发机中的本地振荡源进行频率转换和信道选择。相位噪声是振荡器的重要性能指标,对振荡器有着至关重要的影响。近些年,大多研究的是1/f区域的相位噪声,而对1/f2区域的相位噪声则很少涉及。在Hajimiri和Lee提出的线性时变模型的基础上,推导由基极电阻热噪声引起的相位噪声表达式,并通过仿真验证该方法的可行性。The explosive growth of wireless communications greatly promotes the research and development of wireless transceivers, while the oscillator is the critical module of wireless transceivers, and works as a local oscillator for frequency translation and channel selection in the transceiver. And the phase noise is an important performance indicators of the oscillator, and has an important impact on the oscillator. In recent years, much study is done on 1/f phase noise, but less on 1/f2 phase noise. Based on Hajimiri and Lee＇ s phase noise model, the expression of phase noise caused by the base resistance thermal noise is derived. And the simulation also indicates its effectiveness.

关 键 词：振荡器 相位噪声 基极电阻 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]