This work presents the experimental characterization and digital post-distortion (i.e., digital linearization) of a MHz-range ADC analog front-end for gamma radiation spectroscopy measurements. The front-end was firstly characterized by means of a conventional approach yielding Total Harmonic Distortion (THD) and Effective Number Of Bits (ENOB). Then, it was tested using μs-range pulsed excitations, which are the typical waveforms encountered in gamma spectroscopy. After applying digital post-distortion, the linearized receiver shows a THD reduced by more than 20 dB, a substantial improvement in ENOB, and a higher accuracy in the acquisition of pulsed waveforms.

Digital post-distortion of an ADC analog front-end for gamma spectroscopy measurements

Gibiino G. P.;Traverso P. A.
2020

Abstract

This work presents the experimental characterization and digital post-distortion (i.e., digital linearization) of a MHz-range ADC analog front-end for gamma radiation spectroscopy measurements. The front-end was firstly characterized by means of a conventional approach yielding Total Harmonic Distortion (THD) and Effective Number Of Bits (ENOB). Then, it was tested using μs-range pulsed excitations, which are the typical waveforms encountered in gamma spectroscopy. After applying digital post-distortion, the linearized receiver shows a THD reduced by more than 20 dB, a substantial improvement in ENOB, and a higher accuracy in the acquisition of pulsed waveforms.
2020
24th IMEKO TC4 International Symposium and 22nd International Workshop on ADC and DAC Modelling and Testing
141
145
Kowalski T.; Gibiino G.P.; Barmuta P.; Szewinski J.; Traverso P.A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/805747
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