Generalized lock-in amplifier for precision measurement of high frequency signals

Siyuan Fu, Atsunori Sakurai, Liang Liu, Fredrik Edman, Tõnu Pullerits, Viktor Öwall, Khadga Jung Karki

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We herein formulate the concept of a generalized lock-in amplifier for the precision measurement of high frequency signals based on digital cavities. Accurate measurement of signals higher than 200 MHz using the generalized lock-in is demonstrated. The technique is compared with a traditional lock-in and its advantages and limitations are discussed. We also briefly point out how the generalized lock-in can be used for precision measurement of giga-hertz signals by using parallel processing of the digitized signals.

Original languageEnglish
Article number115101
JournalReview of Scientific Instruments
Volume84
Issue number11
DOIs
StatePublished - Nov 2013
Externally publishedYes

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