Sergio Callegari

56 papers C 13Journal 22Unranked 19
YearRankTypeTitle / Venue / Authors
2020 J jnl
Discrete Programming Entailing Circulant Quadratic Forms: Refinement of a Heuristic Approach Based on ΔΣ Modulation.
IEEE Trans. Circuits Syst. II Express Briefs
Sergio Callegari, Federico Bizzarri, Enrico Malaguti
2019 — conf
Compressed Sensing of ΔΣ Streams.
ICECS
Sergio Callegari, Mauro Mangia, Riccardo Rovatti, Gianluca Setti
2018 C conf
On the Benefit of Adopting Saturable Inductors in Switching-Mode Power-Supplies: A Case Study.
ISCAS
Federico Bizzarri, Angelo Brambilla, Lorenzo Codecasa, Sergio Callegari
2018 J jnl
Optimal Coefficient Quantization in Optimal-NTF Δ!Σ Modulators.
IEEE Trans. Circuits Syst. II Express Briefs
Sergio Callegari, Federico Bizzarri, Angelo Maurizio Brambilla
2017 C conf
Constant-time discontinuity map for forward sensitivity analysis to initial conditions: Spurs detection in fractional-N PLL as a case study.
ISCAS
Federico Bizzarri, Angelo Brambilla, Alessandro Colombo, Sergio Callegari
2017 J jnl
Efficient and Reliable Small-Signal Estimate of Quantization Noise Contribution to Phase Noise in ΔΣ Fractional-
IEEE Trans. Circuits Syst. I Regul. Pap.
Federico Bizzarri, Angelo Brambilla, Sergio Callegari
2017 J jnl
On the Mechanisms Governing Spurious Tone Injection in Fractional PLLs.
IEEE Trans. Circuits Syst. II Express Briefs
Federico Bizzarri, Angelo Maurizio Brambilla, Sergio Callegari
2017 — conf
On the multistage design of optimal-NTF ΔΣ modulators - The case of fractional synthesizers.
ECCTD
Sergio Callegari, Federico Bizzarri, Angelo Brambilla
2016 C conf
True random number generators as configware for mixed mode programmable systems on chip.
ISCAS
Sergio Callegari
2015 — conf
Evaluation of a couple of true random number generators with liberally licensed hardware, firmware, and drivers.
ICECS
Sergio Callegari
2015 J jnl
Optimal design of the noise transfer function of ΔΣ modulators: IIR strategies, FIR strategies, FIR strategies with preassigned poles.
Signal Process.
Sergio Callegari, Federico Bizzarri
2015 C conf
Optimal quantization noise management in wideband fractional-N PLLs.
ISCAS
Sergio Callegari, Federico Bizzarri, Angelo Brambilla
2015 C conf
Teaching ΔΣ modulators with PyDSM and scientific Python.
ISCAS
Sergio Callegari, Federico Bizzarri
2014 J jnl
Achievement of Preassigned Spectra in the Synthesis of Band-Pass Constant-Envelope Signals by Rapidly Hopping through Discrete Frequencies.
CoRR
Sergio Callegari
2014 C conf
Achievement of preassigned spectra in the synthesis of band-pass constant-envelope signals by rapidly hopping through discrete frequencies.
ISCAS
Sergio Callegari
2014 J jnl
Coding of Stereo Signals by a Single Digital ΔΣ Modulator.
CoRR
Sergio Callegari
2014 — conf
Fundamental performance limits of chaotic-map random number generators.
Allerton
Ahmad Beirami, Hamid Nejati, Sergio Callegari
2014 J jnl
Very Low Cost Entropy Source Based on Chaotic Dynamics Retrofittable on Networked Devices to Prevent RNG Attacks.
CoRR
Mattia Fabbri, Sergio Callegari
2014 — conf
Very low cost entropy source based on chaotic dynamics retrofittable on networked devices to prevent RNG attacks.
ICECS
Mattia Fabbri, Sergio Callegari
2013 J jnl
A CMOS Tailed Tent Map for the Generation of Uniformly Distributed Chaotic Sequences
CoRR
Sergio Callegari, Gianluca Setti, Peter J. Langlois
2013 — conf
Coding of stereo signals by a single digital ΔΣ modulator.
ICECS
Sergio Callegari
2013 — conf
Constant envelope pseudo orthogonal excitations for ultrasound testing.
DSP
Salvatore Caporale, Sergio Callegari, Marco Ricci, Pietro Burrascano
2013 J jnl
Noise Weighting in the Design of ΔΣ Modulators (With a Psychoacoustic Coder as an Example).
IEEE Trans. Circuits Syst. II Express Briefs
Sergio Callegari, Federico Bizzarri
2013 J jnl
Noise Weighting in the Design of ΔΣ Modulators (with a Psychoacoustic Coder as an Example).
CoRR
Sergio Callegari, Federico Bizzarri
2013 J jnl
On the usage of resonate and fire dynamics in the complex oscillation-based test approach.
Int. J. Circuit Theory Appl.
Sergio Callegari, Fabio Pareschi, Gianluca Setti, Mani Soma
2013 J jnl
Output Filter Aware Optimization of the Noise Shaping Properties of ΔΣ Modulators Via Semi-Definite Programming.
IEEE Trans. Circuits Syst. I Regul. Pap.
Sergio Callegari, Federico Bizzarri
2013 J jnl
Output Filter Aware Optimization of the Noise Shaping Properties of ΔΣ Modulators via Semi-Definite Programming
CoRR
Sergio Callegari, Federico Bizzarri
2013 J jnl
Should ΔΣ Modulators Used in AC Motor Drives be Adapted to the Mechanical Load of the Motor?
CoRR
Sergio Callegari, Federico Bizzarri
2012 — conf
Should ΔΣ modulators used in AC motor drives be adapted to the mechanical load of the motor?
ICECS
Sergio Callegari, Federico Bizzarri
2012 C conf
Towards a nearly optimal synthesis of power bridge commands in the driving of AC motors.
ISCAS
Federico Bizzarri, Sergio Callegari, Giambattista Gruosso
2011 C conf
Resonate and fire dynamics in Complex Oscillation Based Test of analog filters.
ISCAS
Sergio Callegari, Fabio Pareschi, Gianluca Setti, Mani Soma
2010 C conf
A heuristic solution to the optimisation of flutter control in compression systems (and to some more binary quadratic programming problems) via ΔΣ modulation circuits.
ISCAS
Sergio Callegari, Federico Bizzarri
2010 J jnl
Complex Oscillation-Based Test and Its Application to Analog Filters.
IEEE Trans. Circuits Syst. I Regul. Pap.
Sergio Callegari, Fabio Pareschi, Gianluca Setti, Mani Soma
2010 J jnl
On the Approximate Solution of a Class of Large Discrete Quadratic Programming Problems by Delta Sigma Modulation: The Case of Circulant Quadratic Forms.
IEEE Trans. Signal Process.
Sergio Callegari, Federico Bizzarri, Riccardo Rovatti, Gianluca Setti
2010 — conf
Practical Solution of Periodic Filtered Approximation as a Convex Quadratic Integer Program.
CSDM
Federico Bizzarri, Christoph Buchheim, Sergio Callegari, Alberto Caprara, Andrea Lodi, Riccardo Rovatti, Gianluca Setti
2009 — ch.
Circuits and Systems for the Synthesis of Chaotic Signals in Engineering Applications.
Intelligent Computing Based on Chaos
Fabio Pareschi, Sergio Callegari, Gianluca Setti, Riccardo Rovatti
2009 C conf
Complex Oscillation Based Test of Analog Filters.
ISCAS
Sergio Callegari, Gianluca Setti, Mani Soma
2009 — ch.
Implementation of Low EMI Spread Spectrum Clock Generators Exploiting a Chaos-Based Jitter.
Intelligent Computing Based on Chaos
Fabio Pareschi, Gianluca Setti, Sergio Callegari, Riccardo Rovatti
2009 — conf
On the synthesis of periodic signals by discrete pulse-trains and optimisation techniques.
ECCTD
Federico Bizzarri, Sergio Callegari, Riccardo Rovatti, Gianluca Setti
2008 C conf
Introducing Complex Oscillation Based Test: an application example targeting Analog to Digital Converters.
ISCAS
Sergio Callegari
2007 C conf
ADCs, Chaos and TRNGs: a Generalized View Exploiting Markov Chain Lumpability Properties.
ISCAS
Sergio Callegari, Gianluca Setti
2007 — conf
On the convergence to regime of ADC-based true random number generators.
ECCTD
Riccardo Rovatti, Sergio Callegari, Gianluca Setti
2007 — conf
Some more robustness conditions for the invariant density of a class of 1D maps under additive noise.
ECCTD
Sergio Callegari
2006 — conf
An All-Digital Clock Recovery Architecture for the BRAN Hiperaccess Uplink Receiver.
VTC Spring
Pietro Savazzi, Paolo Gamba, Sergio Callegari
2005 J jnl
Embeddable ADC-based true random number generator for cryptographic applications exploiting nonlinear signal processing and chaos.
IEEE Trans. Signal Process.
Sergio Callegari, Riccardo Rovatti, Gianluca Setti
2005 J jnl
First direct implementation of a true random source on programmable hardware.
Int. J. Circuit Theory Appl.
Sergio Callegari, Riccardo Rovatti, Gianluca Setti
2004 — conf
Post-processing of data generated by a chaotic pipelined ADC for the robust generation of perfectly random bitstreams.
ISCAS (4)
Stefano Poli, Sergio Callegari, Riccardo Rovatti, Gianluca Setti
2002 — conf
Folded sums of chaotic trajectories distribute uniformly.
ISCAS (3)
Sergio Callegari, Riccardo Rovatti, Gianluca Setti
2002 J jnl
Generation of band-pass constant-envelope signals with a pre-assigned spectrum: a synthesis procedure.
Int. J. Circuit Theory Appl.
Sergio Callegari
2002 — conf
On the correlation of non-jittered and chaotically-jittered PWM signals carrying maximum information.
ISCAS (3)
Riccardo Rovatti, Sergio Callegari, Gianluca Setti
2002 J jnl
Statistical modeling of discrete-time chaotic processes-basic finite-dimensional tools and applications.
Proc. IEEE
Gianluca Setti, Gianluca Mazzini, Riccardo Rovatti, Sergio Callegari
2001 — conf
Adaptive median thresholding for the generation of high-data-rate random-like unpredictable binary sequences with chaos.
ISCAS (3)
Sergio Callegari, Mirko Dondini, Gianluca Setti
2000 C conf
A BICMOS PDF notch circuit for FM-DCSK communication over selective channels.
ISCAS
Sergio Callegari, Riccardo Rovatti, Gianluca Setti, Gianluca Mazzini
2000 J jnl
Mapping duality as a means to allow finite βF compensation in bipolar log filters.
Int. J. Circuit Theory Appl.
Sergio Callegari, Gianluca Setti
1999 — conf
Improved bandwidth, low voltage log domain building blocks.
ISCAS (2)
Sergio Callegari, Gianluca Setti
1998 — conf
Cell biasing and balancing in E-cell based single-ended log filters.
ICECS
Sergio Callegari, Gianluca Setti