A digital lock-in technique for small signal detection with square wave reference over a wide frequency range

被引：0
|
作者：
Afanassyev, Denis [1 ]
Rabyk, Vasyl [1 ,2 ]
机构：
[1] Lviv Polytech Natl Univ, Lvov, Ukraine
[2] Ivan Franko Natl Univ Lviv, Lvov, Ukraine
来源：
2018 14TH INTERNATIONAL CONFERENCE ON ADVANCED TRENDS IN RADIOELECTRONICS, TELECOMMUNICATIONS AND COMPUTER ENGINEERING (TCSET) | 2018年
关键词：
lock-in amplifier; oversampling; decimation; anti alias filter; finite impulse response; square wave; complex signal;
D O I：
暂无
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：
we discuss an approach to design of a digital lock in amplifier with full utilization of advantages of a high precision sigma-delta analog to digital converter with configurable output filter. The particular attention is paid to the hardware simplification including the input anti-alias filter and digital signal processing. We show that the configurable oversampling together with the use of square wave reference allows one to obtain a simple and precise digital lock-in amplifier with frequency range of more than 10 decades and input dynamic reserve exceeding 120dB.
引用
收藏
页码：480 / 483
页数：4
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