Papers by Francesco Lannutti
2014 Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems (MIXDES), 2014
The simulation of large digital and mixed-signal integrated circuits is one of the challenges of ... more The simulation of large digital and mixed-signal integrated circuits is one of the challenges of the electronics design automation industry. In this work, a fast linear solver, KLU, is implemented into NGSPICE circuit simulator and its performances have been verified on standard netlists.
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2014
MOS-AK is a European, independent compact modelling forum created by a group of engineers, resear... more MOS-AK is a European, independent compact modelling forum created by a group of engineers, researchers and compact modelling enthusiasts to promote advanced compact modelling techniques and model standardization using high level behavioral modelling languages such as VHDL-AMS and Verilog-A. This invited paper summarizes recent MOS-AK open source compact model standardization activities and presents advanced topics in MOSEFT modelling, focusing in particular on analogue/RF applications. The paper discusses links between compact models and design methodologies, finally introducing elements of compact model standardization. The open source CAD tools: Qucs, QucsStudio and ngspice all support Verilog-A as a hardware description language for compact model standardization. Latter sections of this paper describe a Verilog-A implementation of the EKV3 MOS transistor model. Additionally, the simulated RF model performance is evaluated and compared with experimental results for 90nm CMOS technology.
2014 10th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME), 2014
ABSTRACT In this paper we present a new algorithm, based on Kirchhoff's Current Law (KCL)... more ABSTRACT In this paper we present a new algorithm, based on Kirchhoff's Current Law (KCL) verification, for assessing convergence in circuit-level simulation and its implementation in the NGSPICE open source circuit simulator. We start from the analysis of false convergence problems appeared in the analysis of test circuits that we found to be related to the convergence checks that NGSPICE simulator inherits from SPICE3F5. These checks are inaccurate in some cases, so we propose to replace them with a new, efficient, algorithm based on KCL verification. The methodology to verify KCL of the circuit is detailed in this paper, along with the extraction flow, required to compute every KCL contribution. We finally present a case study of a circuit showing non converging solution, while the same circuit can be solved using the proposed algorithm.
2014 Proceedings of the 21st International Conference Mixed Design of Integrated Circuits and Systems (MIXDES), 2014
ABSTRACT This paper investigates the implementation of radar algorithms on Graphics Processing Un... more ABSTRACT This paper investigates the implementation of radar algorithms on Graphics Processing Units (GPUs). The focus is on electronically scanned search radars. GPUs enable to develop high performance digital processing systems with limited development time. It is possible to employ a single commercial board (an NVIDIA GeForce 680 GTX in our case) to perform all the algorithms of a search radar: downconversion, amplitude/phase correction, pulse compression, beam forming, spectrum analysis, and CFAR noise floor estimation.
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Papers by Francesco Lannutti