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

Research output: Contribution to journalArticle


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.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • Atom and Molecular Physics and Optics
Original languageEnglish
Article number115101
JournalReview of Scientific Instruments
Issue number11
Publication statusPublished - 2013
Publication categoryResearch

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Electrical and information technology (011041010), Chemical Physics (S) (011001060)