S波段低相噪振荡器的设计  

Design of low phase noise oscillators at S-band

作　　者：赖一成[1] 宋亚梅[1] 

机构地区：[1]电子科技大学电子工程学院,成都611731

出　　处：《信息技术》2013年第2期140-142,145,共4页Information Technology

摘　　要：基于ADS软件仿真,提出了S波段低相噪振荡器的设计方案。该振荡器采用了100MHz低相噪晶体振荡器和倍频链电路的组合,通过三次倍频来实现2GHz的单点频输出,并且在倍频过程中尽量地让相位噪声按照20lgN恶化。实测结果表明,振荡器输出信号的相位噪声在偏移1kHz处可达到-155dBc/Hz,最终输出信功率大于10dBm,谐波抑制大于25dBc。Based on the ADS software simulation, this paper puts forward the design scheme of low phase noise oscillator at S-band. The oscillator uses the combination of 100 MHz low phase noise crystal oscillator and double frequency chain circuit, through the three times frequency doubling, to achieve 2 CHz single point frequency output, and as far as possible let phase noise deteriorate at 20 lgN. The measured results show that the phase noise can achieve - 155dBc/Hz at lkHz; the power of final output signal is greater than 10dBm, harmonic suppression is greater than 25dBc.

关 键 词：ADS仿真 倍频链 低相噪 

分 类 号：TN752[电子电信—电路与系统]