[1]周文骏,张雪峰,陈建新.具有深度二次谐波抑制的低相位噪声射频振荡器[J].南京理工大学学报(自然科学版),2015,39(04):477.
 Zhou Wenjun,Zhang Xuefeng,Chen Jianxin.Low phase noise RF oscillator with high second harmonic suppression[J].Journal of Nanjing University of Science and Technology,2015,39(04):477.
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具有深度二次谐波抑制的低相位噪声射频振荡器
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
39卷
期数:
2015年04期
页码:
477
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Low phase noise RF oscillator with high second harmonic suppression
作者:
周文骏张雪峰陈建新
南通大学 电子信息学院,江苏 南通 226019
Author(s):
Zhou WenjunZhang XuefengChen Jianxin
School of Electronics and Information,Nantong University,Nantong 226019
关键词:
射频反馈型振荡器 低相位噪声 带通滤波器 复数品质因数 二次谐波抑制
Keywords:
radio frequency feedback oscillator low phase noise bandpass filter complex quality factor second harmonic suppression
分类号:
TN752.2
摘要:
射频振荡器作为无线通信系统的关键部件,在射频前端上/下变频电路中扮演着非常重要的角色。为了满足系统对振荡器高性能的要求,该文给出了具有深度二次谐波抑制功能的低相位噪声反馈型射频振荡器的设计方法。在放大器的输入输出端之间引入微带带通滤波器构成反馈回路,利用其通带中较大的复数品质因数有效降低了振荡器的相位噪声; 在振荡器输出端加载一对并联的λg/8开、短路枝节来实现在不影响基波信号的同时对二次谐波进行有效抑制。设计的射频振荡器实测和仿真结果吻合良好,低相位噪声与二次谐波抑制同时在所提出的振荡器上得到实现。
Abstract:
As a key component in wireless communication system,the radio frequency(RF)oscillator plays a key role in the frequency up-/down-conversion in the RF front end.In order to meet the requirements of the system improvements,this paper proposes a method to design a low phase noise feedback oscillator with the high second harmonic suppression.A bandpass filter is introduced between the input and output of the amplifier for constructing a feedback loop.The phase noise of the oscillator can be effectively improved due to its large complex quality factor(peak QSC)in the passband.Then a pair of λg/8 open-and short-circuited stubs in parallel is added to the output of the oscillator in order to effectively suppress the second harmonic while there is no effect on the fundamental signal.The measured and simulated results show good agreement.The low phase noise and second harmonic suppression are simultaneously realized in the proposed oscillator.

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备注/Memo

备注/Memo:
收稿日期:2014-10-24 修回日期:2015-01-22
基金项目:国家自然科学基金(61271136); 教育部“新世纪优秀人才”支持计划(NECT-11-0993)
作者简介:周文骏(1990-),男,硕士生,主要研究方向:射频与微波电路,E-mail:zwjzhou@hotmail.com; 通讯作者:陈建新(1979-),男,博士,教授,主要研究方向:射频与微波电路,E-mail:jjxchen@hotmail.com。
引文格式:周文骏,张雪峰,陈建新.具有深度二次谐波抑制的低相位噪声射频振荡器[J].南京理工大学学报,2015,39(4):477-482.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2015-08-31