Produção Nacional
A method for delay estimation between channels of Analog to Information Converters
2022; Volume: 17; Issue: 2 Linguagem: Inglês
10.29292/jics.v17i2.562
ISSN1872-0234
AutoresBruno W. S. Arruda, Edmar C. Gurjão, Raimundo C. S. Freire,
Tópico(s)Analog and Mixed-Signal Circuit Design
ResumoAnalog to Information Converters (AIC) implements signal acquisition in Compressed Sensing. AIC performance is affected by noise and hardware imperfections. In parallel Random Modulator Pre-Integrator (RMPI) architectures, delay among channels reduces the performance; thus, delay estimation and compensation methods are necessary. In previous works, delay estimation compares a reference signal with a reconstructed signal from the AIC output; however, such methods produce different results according to the recovery method. To avoid this problem, we present a method based on a controlled delay signal to estimate channel delay without the necessity of signal recovery. The obtained results show the technique's feasibility and the possibility of its use as a built-in calibration process for AIC.
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