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.
Kowalski T., Gibiino G.P., Barmuta P., Szewinski J., Traverso P.A. (2020). Digital post-distortion of an ADC analog front-end for gamma spectroscopy measurements. International Measurement Confederation (IMEKO).
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
