Photonic-assisted wideband phase noise measurement of microwave signal sources

被引：16
|
作者：
Zhang, Fangzheng [1 ]
Zhu, Dengjian [1 ]
Pan, Shilong [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Key Lab Radar Imaging & Microwave Photon, Minist Educ, Nanjing 210016, Peoples R China
来源：
ELECTRONICS LETTERS | 2015年 / 51卷 / 16期
关键词：
Electrical devices - High sensitivity - Measurement sensitivity - Microwave signal processing - Microwave signal source - Operation bandwidth - Optical delay lines - Phase noise measurement;
D O I：
10.1049/el.2015.0810
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A photonic-assisted scheme for the phase noise measurement of microwave signal sources is proposed based on the optical delay-line method. In the proposed scheme, all the microwave signal processing is implemented in the optical domain, and the electrical devices that would limit the operation bandwidth and measurement sensitivity are avoided, leading to a large operation bandwidth and a high sensitivity. The feasibility of the proved phase noise measurement system is experimentally verified. A large operation bandwidth of 5-40 GHz is achieved, and a phase noise floor as low as -140 dBc/Hz at 10 kHz offset is obtained.
引用
收藏
页码：1272 / 1273
页数：2
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