Electronics and data acquisition demonstrator for a kinetic inductance camera

Abstract

A prototype of digital frequency multiplexing electronics allowing the real\ntime monitoring of kinetic inductance detector (KIDs) arrays for mm-wave\nastronomy has been developed. It requires only 2 coaxial cables for\ninstrumenting a large array. For that, an excitation comb of frequencies is\ngenerated and fed through the detector. The direct frequency synthesis and the\ndata acquisition relies heavily on a large FPGA using parallelized and\npipelined processing. The prototype can instrument 128 resonators (pixels) over\na bandwidth of 125 MHz. This paper describes the technical solution chosen, the\nalgorithm used and the results obtained.\n