Robust analog/RF circuit design with projection-based performance modeling
In this paper, a robust analog design (ROAD) tool for posttuning (i.e., locally optimizing) analog/RF circuits is proposed. Starting from an initial design derived from hand analysis or analog circuit optimization based on simplified models, ROAD extracts accurate performance models via transistor-level simulation and iteratively improves the circuit performance by a sequence of geometric programming steps. Importantly, ROAD sets up all design constraints to include large-scale process and environmental variations, thereby facilitating the tradeoff between yield and performance. A crucial component of ROAD is a novel projectionbased scheme for quadratic (both polynomial and posynomial) performance modeling, which allows our approach to scale well to large problem sizes. A key feature of this projection-based scheme is a new implicit power iteration algorithm to find the optimal projection space and extract the unknown model coefficients with robust convergence. The efficacy of ROAD is demonstrated on several circuit examples. © 2007 IEEE.
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- 1006 Computer Hardware
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Citation
Published In
DOI
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Computer Hardware & Architecture
- 4607 Graphics, augmented reality and games
- 4009 Electronics, sensors and digital hardware
- 1006 Computer Hardware
- 0906 Electrical and Electronic Engineering