Sergio Callegari

Publication Activity (10 Years)

Years Active: 1998-2020
Publications (10 Years): 9

Top Topics

Random Number Generators

Top Venues

IEEE Trans. Circuits Syst. II Express Briefs

Publications

Sergio Callegari, Federico Bizzarri, Enrico Malaguti
Discrete Programming Entailing Circulant Quadratic Forms: Refinement of a Heuristic Approach Based on ΔΣ Modulation. IEEE Trans. Circuits Syst. II Express Briefs (5) (2020)
Sergio Callegari, Mauro Mangia, Riccardo Rovatti, Gianluca Setti
Compressed Sensing of ΔΣ Streams. ICECS (2019)
Sergio Callegari, Federico Bizzarri, Angelo Maurizio Brambilla
Optimal Coefficient Quantization in Optimal-NTF Δ!Σ Modulators. IEEE Trans. Circuits Syst. II Express Briefs (5) (2018)
Federico Bizzarri, Angelo Brambilla, Lorenzo Codecasa, Sergio Callegari
On the Benefit of Adopting Saturable Inductors in Switching-Mode Power-Supplies: A Case Study. ISCAS (2018)
Federico Bizzarri, Angelo Maurizio Brambilla, Sergio Callegari
On the Mechanisms Governing Spurious Tone Injection in Fractional PLLs. IEEE Trans. Circuits Syst. II Express Briefs (11) (2017)
Federico Bizzarri, Angelo Brambilla, Sergio Callegari
PLL. IEEE Trans. Circuits Syst. I Regul. Pap. (6) (2017)
Federico Bizzarri, Angelo Brambilla, Alessandro Colombo, Sergio Callegari
Constant-time discontinuity map for forward sensitivity analysis to initial conditions: Spurs detection in fractional-N PLL as a case study. ISCAS (2017)
Sergio Callegari, Federico Bizzarri, Angelo Brambilla
On the multistage design of optimal-NTF ΔΣ modulators - The case of fractional synthesizers. ECCTD (2017)
Sergio Callegari
True random number generators as configware for mixed mode programmable systems on chip. ISCAS (2016)
Sergio Callegari, Federico Bizzarri
Optimal design of the noise transfer function of ΔΣ modulators: IIR strategies, FIR strategies, FIR strategies with preassigned poles. Signal Process. 114 (2015)
Sergio Callegari, Federico Bizzarri, Angelo Brambilla
Optimal quantization noise management in wideband fractional-N PLLs. ISCAS (2015)
Sergio Callegari, Federico Bizzarri
Teaching ΔΣ modulators with PyDSM and scientific Python. ISCAS (2015)
Sergio Callegari
Evaluation of a couple of true random number generators with liberally licensed hardware, firmware, and drivers. ICECS (2015)
Sergio Callegari
Achievement of Preassigned Spectra in the Synthesis of Band-Pass Constant-Envelope Signals by Rapidly Hopping through Discrete Frequencies. CoRR (2014)
Mattia Fabbri, Sergio Callegari
Very Low Cost Entropy Source Based on Chaotic Dynamics Retrofittable on Networked Devices to Prevent RNG Attacks. CoRR (2014)
Sergio Callegari
Coding of Stereo Signals by a Single Digital ΔΣ Modulator. CoRR (2014)
Ahmad Beirami, Hamid Nejati, Sergio Callegari
Fundamental performance limits of chaotic-map random number generators. Allerton (2014)
Sergio Callegari
Achievement of preassigned spectra in the synthesis of band-pass constant-envelope signals by rapidly hopping through discrete frequencies. ISCAS (2014)
Mattia Fabbri, Sergio Callegari
Very low cost entropy source based on chaotic dynamics retrofittable on networked devices to prevent RNG attacks. ICECS (2014)
Sergio Callegari, Gianluca Setti, Peter J. Langlois
A CMOS Tailed Tent Map for the Generation of Uniformly Distributed Chaotic Sequences CoRR (2013)
Sergio Callegari, Federico Bizzarri
Output Filter Aware Optimization of the Noise Shaping Properties of ΔΣ Modulators Via Semi-Definite Programming. IEEE Trans. Circuits Syst. I Regul. Pap. (9) (2013)
Salvatore Caporale, Sergio Callegari, Marco Ricci, Pietro Burrascano
Constant envelope pseudo orthogonal excitations for ultrasound testing. DSP (2013)
Sergio Callegari, Federico Bizzarri
Noise Weighting in the Design of ΔΣ Modulators (with a Psychoacoustic Coder as an Example). CoRR (2013)
Sergio Callegari, Federico Bizzarri
Should ΔΣ Modulators Used in AC Motor Drives be Adapted to the Mechanical Load of the Motor? CoRR (2013)
Sergio Callegari, Fabio Pareschi, Gianluca Setti, Mani Soma
On the usage of resonate and fire dynamics in the complex oscillation-based test approach. Int. J. Circuit Theory Appl. 41 (12) (2013)
Sergio Callegari, Federico Bizzarri
Output Filter Aware Optimization of the Noise Shaping Properties of ΔΣ Modulators via Semi-Definite Programming CoRR (2013)
Sergio Callegari
Coding of stereo signals by a single digital ΔΣ modulator. ICECS (2013)
Sergio Callegari, Federico Bizzarri
Noise Weighting in the Design of ΔΣ Modulators (With a Psychoacoustic Coder as an Example). IEEE Trans. Circuits Syst. II Express Briefs (11) (2013)
Federico Bizzarri, Sergio Callegari, Giambattista Gruosso
Towards a nearly optimal synthesis of power bridge commands in the driving of AC motors. ISCAS (2012)
Sergio Callegari, Federico Bizzarri
Should ΔΣ modulators used in AC motor drives be adapted to the mechanical load of the motor? ICECS (2012)
Sergio Callegari, Fabio Pareschi, Gianluca Setti, Mani Soma
Resonate and fire dynamics in Complex Oscillation Based Test of analog filters. ISCAS (2011)
Federico Bizzarri, Christoph Buchheim, Sergio Callegari, Alberto Caprara, Andrea Lodi, Riccardo Rovatti, Gianluca Setti
Practical Solution of Periodic Filtered Approximation as a Convex Quadratic Integer Program. CSDM (2010)
Sergio Callegari, Fabio Pareschi, Gianluca Setti, Mani Soma
Complex Oscillation-Based Test and Its Application to Analog Filters. IEEE Trans. Circuits Syst. I Regul. Pap. (5) (2010)
Sergio Callegari, Federico Bizzarri, Riccardo Rovatti, Gianluca Setti
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. 58 (12) (2010)
Sergio Callegari, Federico Bizzarri
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 (2010)
Federico Bizzarri, Sergio Callegari, Riccardo Rovatti, Gianluca Setti
On the synthesis of periodic signals by discrete pulse-trains and optimisation techniques. ECCTD (2009)
Sergio Callegari, Gianluca Setti, Mani Soma
Complex Oscillation Based Test of Analog Filters. ISCAS (2009)
Sergio Callegari
Introducing Complex Oscillation Based Test: an application example targeting Analog to Digital Converters. ISCAS (2008)
Sergio Callegari
Some more robustness conditions for the invariant density of a class of 1D maps under additive noise. ECCTD (2007)
Sergio Callegari, Gianluca Setti
ADCs, Chaos and TRNGs: a Generalized View Exploiting Markov Chain Lumpability Properties. ISCAS (2007)
Riccardo Rovatti, Sergio Callegari, Gianluca Setti
On the convergence to regime of ADC-based true random number generators. ECCTD (2007)
Pietro Savazzi, Paolo Gamba, Sergio Callegari
An All-Digital Clock Recovery Architecture for the BRAN Hiperaccess Uplink Receiver. VTC Spring (2006)
Sergio Callegari, Riccardo Rovatti, Gianluca Setti
First direct implementation of a true random source on programmable hardware. Int. J. Circuit Theory Appl. 33 (1) (2005)
Sergio Callegari, Riccardo Rovatti, Gianluca Setti
Embeddable ADC-based true random number generator for cryptographic applications exploiting nonlinear signal processing and chaos. IEEE Trans. Signal Process. 53 (2-2) (2005)
Stefano Poli, Sergio Callegari, Riccardo Rovatti, Gianluca Setti
Post-processing of data generated by a chaotic pipelined ADC for the robust generation of perfectly random bitstreams. ISCAS (4) (2004)
Gianluca Setti, Gianluca Mazzini, Riccardo Rovatti, Sergio Callegari
Statistical modeling of discrete-time chaotic processes-basic finite-dimensional tools and applications. Proc. IEEE 90 (5) (2002)
Sergio Callegari, Riccardo Rovatti, Gianluca Setti
Folded sums of chaotic trajectories distribute uniformly. ISCAS (3) (2002)
Sergio Callegari
Generation of band-pass constant-envelope signals with a pre-assigned spectrum: a synthesis procedure. Int. J. Circuit Theory Appl. 30 (5) (2002)
Riccardo Rovatti, Sergio Callegari, Gianluca Setti
On the correlation of non-jittered and chaotically-jittered PWM signals carrying maximum information. ISCAS (3) (2002)
Sergio Callegari, Mirko Dondini, Gianluca Setti
Adaptive median thresholding for the generation of high-data-rate random-like unpredictable binary sequences with chaos. ISCAS (3) (2001)
Sergio Callegari, Gianluca Setti
Mapping duality as a means to allow finite βF compensation in bipolar log filters. Int. J. Circuit Theory Appl. 28 (4) (2000)
Sergio Callegari, Riccardo Rovatti, Gianluca Setti, Gianluca Mazzini
A BICMOS PDF notch circuit for FM-DCSK communication over selective channels. ISCAS (2000)
Sergio Callegari, Gianluca Setti
Improved bandwidth, low voltage log domain building blocks. ISCAS (2) (1999)
Sergio Callegari, Gianluca Setti
Cell biasing and balancing in E-cell based single-ended log filters. ICECS (1998)