Publicaciones del IMSE

Encontrados resultados para:

Autor: Javad Gorji
Año: Desde 2002

Artículos de revistas


On the Use of FIR Feedback in Bandpass Delta-Sigma Modulators
J. Gorji, S. Pavan and J.M. de la Rosa
Journal Paper · IEEE Transactions on Circuits and Systems I: Regular Papers, 2023
resumen      doi      

This paper presents a new architecture for bandpass delta-sigma modulators (BP-ΔΣMs) featuring finite impulse response (FIR) filters in the feedback path. The effectiveness of FIR feedback in lowpass delta-sigma modulators (LP-ΔΣMs) has been well-established in improving loop-filter linearity and robustness to clock jitter. Building upon these findings, we explore the application of bandpass FIR filters in single-bit BP-ΔΣMs. By contrast to conventional BP-ΔΣMs, the proposed technique significantly reduces out-of-band quantization error contents in the feedback signal. This approach is applicable to both discrete-time and continuous-time implementations. Further, we show that performance does not improve by increasing the number of FIR taps beyond a certain point. However, we can enhance filtering performance by employing non-equal coefficients within the filter. To validate the efficacy of the presented approach, the paper includes electrical simulation of a 4th-order active-RC BP-ΔΣM.

Bandpass ΔΣ Modulators with FIR Feedback
J. Gorji, S. Pavan and J.M. de la Rosa
Journal Paper · IEEE International Symposium on Circuits and Systems ISCAS 2023
resumen      doi      

This paper investigates finite impulse response (FIR) feedback in bandpass delta-sigma modulators (BP- ΔΣMs ). FIR feedback in lowpass delta-sigma modulators (LP- ΔΣMs ) improves loop filter linearity and reduces the sensitivity of the modulator to clock jitter. We show that similar benefits can be obtained in a BP- ΔΣM if the FIR filter in the feedback path is made a bandpass one 1 1 This work was supported in part by Grant PID2019-103876RB-I00, funded by MCIN/AEI/10.13039/501100011033, by the European Union ESF Investing in your future, and by ’’Junta de Andalucía’’ under Grant P20-00599 and in part by the Center of Excellence in RF, Analog and Mixed-Signal ICs (CERAMIC), IIT Madras..

Congresos


No hay resultados

Libros


No hay resultados

Capítulos de libros


No hay resultados

Otras publicaciones


No hay resultados

  • Revistas590
  • Congresos1174
  • Libros30
  • Capítulos de libros81
  • Otros9
  • 202413
  • 202335
  • 202281
  • 202183
  • 2020103
  • 201977
  • 2018106
  • 2017111
  • 2016104
  • 2015111
  • 2014104
  • 201380
  • 2012108
  • 2011102
  • 2010120
  • 200977
  • 200867
  • 200770
  • 200665
  • 200578
  • 200468
  • 200362
  • 200259
INVESTIGACIÓN
COMPARTIR