Advances in the Goertzel Filter Bank Channelizer for Cryogenic Sensors Readout

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2024年9月12日

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L. P. Ferreyro,
M. E. García Redondo,
J. M. Salum,
T. Muscheid,
M. Hampel,
A. Almela,
A. Fuster,
J. M. Geria,
J. Bonaparte,
J. Bonilla-Neira,
L. E. Ardila-Perez,
R. Gartmann,
N. Müller,
M. Wegner,
O. Sander,
M. Platino,
S. Kempf,
A. Etchegoyen,
M. Weber

摘要

Neutrino mass estimation experiments and cosmic microwave background (CMB) radiation surveys both employ low-temperature detectors (LTD) known as calorimeters and bolometers, respectively. These detectors operate typically between 10 and 300 mK. LTDs multiplexed by means of a microwave superconducting quantum interference device multiplexer (µMUX) demonstrated to be an excellent device for the readout of several detectors in the microwave region. This entails generating a multi-tonal signal and its subsequent readout. A single-tone detection method based on a Goertzel filter bank (GFB) channelizer was used for the readout of the aforementioned signal, implemented in a software-defined radio readout architecture within a field-programmable gate array. The measurements presented here demonstrate remarkable results in validating the suitability of the GFB channelizer for this system.