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

页码：480 / 483

页数：4

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