%0 Journal Article
%T Generalized lock-in amplifier for precision measurement of high frequency signals
%A Siyuan Fu
%A Atsunori Sakurai
%A Liang Liu
%A Fredrik Edman
%A T£¿nu Pullerits
%A Viktor £¿wall
%A Khadga Karki
%J Physics
%D 2013
%I arXiv
%R 10.1063/1.4827085
%X 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.
%U http://arxiv.org/abs/1308.5512v1