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» Hassan Aboushady » Seminars
Ph.D. Thesis Defense
PhD. Candidate: Michel Vasilevski
Title: "Unified Multi-Level Design Environment for Mixed Signal Systems".
Date: Thursday, October 04th, 2012, at 14:00.
Location: Salle 211, Couloir 55-65, 4, Place Jussieu, 75252 Paris.
Committee in Charge:
| - | Alain Vachoux, | Ecole Polytechnique Federale de Lausanne, EPFL, | Switzerland, | Reviewer. |
| - | Gilles Jacquemod, | Polytech' Nice Sophia-Antipolis, | France, | Reviewer. |
| - | Ian O'Connor, | Ecole Centrale de Lyon, | France. |
| - | Serge Scotti, | STMicroelectronics, | France. |
| - | Marie-Minerve Louerat, | University of Pierre & Marie Curie, | France. |
| - | Francois Pecheux, | University of Pierre & Marie Curie, | France. |
| - | Alain Greiner, | University of Pierre & Marie Curie, | France. |
| - | Hassan Aboushady, | University of Pierre & Marie Curie, | France. |
Thesis Summary:
Nowadays, System-on-Chips containing digital, analog and RF blocks are very common and are present in almost all electronic devices.
This fact brings the designers of analog and digital domains to work together to apply a complete analog/digital Mixed-Signal design.
A system-level model containing both the analog and digital parts is very important to determine the circuit specifications and to validate the desired system performance.
Tools available to model such systems are currently lacking: Matlab, a widely used high-level simulator is not compatible with the integrated circuit design flow.
VHDL-AMS, a language for analog mixed-signal circuit description is very time-consuming for large systems.
Recently, an AMS extension of SystemC, called SystemC AMS, has filled this gap of Mixed Signal modeling in a system level.
At the circuit level, the conventional analog design methodologies have been mainly based on the analog designer approximated calculations and computer-aided simulations for tuning.
The design time of analog and RF blocks is very dependent on the designer's experience.
When the CMOS process or the specifications are changed a complete redesign is necessary.
Moreover, it is very difficult to optimize the overall design of a complex mixed-signal circuit because the design and simulation environments used for the digital blocks are very different from those used for the analog and RF blocks.
The following points summarize the contributions realized in this work:
- The first implementation of a fairly complex Mixed Signal model in SystemC-AMS: a Wireless Sensor Network node.
- Refined models for a generic and configurable approach of system-level modeling.
- An accurate linear and nonlinear circuit performance evaluation tool for system-level refined models back-annotation and circuit-level optimized design.
- An optimized circuit design methodology based on an accurate sizing tool and the circuit performance evaluation tool.
- A unified Mixed Signal design environment with a very strong interaction between system-level simulation and optimized circuit-level design.
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