期刊
JOURNAL OF INSTRUMENTATION
卷 6, 期 -, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1748-0221/6/06/P06012
关键词
Real-time monitoring; Instruments for CMB observations; Digital electronic circuits; On-board data handling
A prototype of digital frequency multiplexing electronics allowing the real time monitoring of microwave kinetic inductance detector (MKIDs) arrays for mm-wave astronomy has been developed. It requires only 2 coaxial cables for instrumenting a large array. For that, an excitation comb of frequencies is generated and fed through the detector. The direct frequency synthesis and the data acquisition relies heavily on a large FPGA using parallelized and pipelined processing. The prototype can instrument 128 resonators (pixels) over a bandwidth of 125 MHz. This paper describes the technical solution chosen, the algorithm used and the results obtained.
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