Dr. Pasquale Tommasino Profile

Dr. Pasquale Tommasino

at Univ degli Studi di Roma La Sapienza

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Publications (6)

Proceedings Article | 5 March 2021 Paper

Integrated high-speed quantum random number generators for mobile, IOT, and edge applications

D. Tulli, M. Rudé, A. Vannucci, P. Tommasino, A. Trifiletti, A. De Sanctis

Proceedings Volume 11692, 116920R (2021) https://doi.org/10.1117/12.2580510

KEYWORDS: Safety, Packaging, Evolutionary algorithms, Computer security, Artificial intelligence

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Proceedings Article | 29 July 2016 Paper

Design-oriented analytic model of phase and frequency modulated optical links

Pietro Monsurrò, Antonio Saitto, Pasquale Tommasino, Alessandro Trifiletti, Antonello Vannucci, Rosario Cimmino

Proceedings Volume 9904, 99045S (2016) https://doi.org/10.1117/12.2232929

KEYWORDS: Modulation, Receivers, Phase shift keying, Optical filters, Antennas, Microwave radiation, Optical design, Finite impulse response filters, Phase modulation, Optical amplifiers

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Proceedings Article | 4 August 2014 Paper

Feed array metrology and correction layer for large antenna systems in ASIC mixed signal technology

F. Centureli, G. Scotti, P. Tommasino, A. Trifiletti, F. Romano, R. Cimmino, A. Saitto

Proceedings Volume 9150, 91500F (2014) https://doi.org/10.1117/12.2051302

KEYWORDS: Antennas, Reflectors, Prototyping, Signal processing, Control systems, Sensors, Transmission electron microscopy, Metrology, Digital signal processing, Phase shifts

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The paper deals with a possible use of the feed array present in a large antenna system, as a layer for measuring the antenna performance with a self-test procedure and a possible way to correct residual errors of the Antenna geometry and of the antenna distortions. Focus has been concentrated on a few key critical elements of a possible feed array metrology program. In particular, a preliminary contribution to the design and development of the feed array from one side, and the subsystem dedicated to antenna distortion monitoring and control from the other, have been chosen as the first areas of investigation. Scalability and flexibility principles and synergic approach with other coexistent technologies have been assumed of paramount importance to ensure ease of integrated operation and therefore allowing in principle increased performance and efficiency. The concept is based on the use of an existing feed array grid to measure antenna distortion with respect to the nominal configuration. Measured data are then processed to develop a multilayer strategy to control the mechanical movable devices (when existing) and to adjust the residual fine errors through a software controlled phase adjustment of the existing phase shifter The signal from the feed array is converted passing through a FPGA/ASIC level to digital data channels. The kind of those typically used for the scientific experiments. One additional channel is used for monitoring the antenna distortion status. These data are processed to define the best correction strategy, based on a software managed control system capable of operating at three different levels of the antenna system: reflector rotation layer, sub reflector rotation and translation layer (assuming the possibility of controlling a Stewart machine), phase shifter of the phased array layer. The project is at present in the design phase, a few elements necessary for a sound software design of the control subsystem have been developed at a technological demonstrator level while the ASIC board for generating the digital data stream has been fully developed. A prototype for control accurately the position of the sub-reflector up to a diameter of 5 meters (similar to the sub reflector size of a large antenna) using a Stewart mechanism is being planned. The selection strategy of the correction modes will depend on the dynamics of the phased array (i.e. the available bits of the A/D conversion). The reaction time allowed for the correction, depending on the error type and the inertia of the sub systems. Typically, the compensation can be divided among all the adjusting elements.

Proceedings Article | 4 August 2014 Paper

Using feed array networks to control distortions in antenna reflector for astrophysical radio-astronomy

F. Centurelli, P. Monsurrò, F. Romano, G. Scotti, Pasquale Tommasino, A. Trifiletti

Proceedings Volume 9145, 914523 (2014) https://doi.org/10.1117/12.2055521

KEYWORDS: Antennas, Calibration, Phased arrays, Filtering (signal processing), Transmitters, Receivers, Doppler effect, Finite impulse response filters, Reflectors, Electronic filtering

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Proceedings Article | 4 August 2014 Paper

Cosmic non-TEM radiation and synthetic feed array sensor system in ASIC mixed signal technology

F. Centureli, G. Scotti, P. Tommasino, A. Trifiletti, F. Romano, R. Cimmino, A. Saitto

Proceedings Volume 9150, 91501W (2014) https://doi.org/10.1117/12.2055530

KEYWORDS: Transmission electron microscopy, Sensors, Polarization, Spherical lenses, Signal processing, Radio telescopes, Antennas, Prototyping, Electron tomography, Digital signal processing

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Proceedings Article | 12 May 2003 Paper

Model of flicker noise effects on phase noise in oscillators

Francesco Centurelli, Alessandro Ercolani, Pasquale Tommasino, Alessandro Trifiletti

Proceedings Volume 5113, (2003) https://doi.org/10.1117/12.496951

KEYWORDS: Oscillators, Phase shift keying, Modulation, Resonators, Convolution, Interference (communication), Upconversion, Frequency modulation, Resistance, Computer aided design

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Showing 5 of 6 publications

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