Journal ArticleDOI
Space mapping technique for electromagnetic optimization
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In this article, the authors propose space mapping (SM) for circuit optimization utilizing a parameter space transformation, which is demonstrated by the optimization of a microstrip structure for which a convenient analytical/empirical model is assumed to be unavailable.Abstract:
We offer space mapping (SM), a fundamental new theory to circuit optimization utilizing a parameter space transformation. This technique is demonstrated by the optimization of a microstrip structure for which a convenient analytical/empirical model is assumed to be unavailable. For illustration, we focus upon a three-section microstrip impedance transformer and a double folded stub microstrip filter and explore various design characteristics utilizing an electromagnetic (EM) field simulator. We propose two distinct EM models: coarse for fast computations, and the corresponding fine for a few more accurate and well-targeted simulations. The coarse model, useful when circuit-theoretic models are not readily available, permits rapid exploration of different starting points, solution robustness, local minima, parameter sensitivities, yield-driven design and other design characteristics within a practical time frame. The computationally intensive fine model is used to verify the space-mapped designs obtained exploiting the coarse model, as well as in the SM process itself. >read more
Citations
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References
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Microstrip filter design using direct EM field simulation
TL;DR: For the first time, minimax filter design is presented with electromagnetic simulations driven directly by a gradient-based optimizer and the results of expensive EM simulations are stored in a dynamically updated database.
Journal ArticleDOI
Huber optimization of circuits: a robust approach
TL;DR: In this article, the authors introduce an approach to robust circuit optimization using Huber functions, both two-sided and one-sided, and compare Huber optimization with l/sub 1/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24
Journal ArticleDOI
Yield-driven electromagnetic optimization via multilevel multidimensional models
TL;DR: The authors present the foundation of a sophisticated hierarchical multidimensional response surface modeling system for efficient yield-driven design that makes it possible, for the first time, to perform direct gradient-based yield optimization of circuits with components or subcircuits simulated by an electromagnetic simulator.
Proceedings ArticleDOI
Electromagnetic design of high-temperature superconducting microwave filters
TL;DR: In this article, the authors present novel approaches to electromagnetic design of high-temperature superconducting quarter-wave parallel coupled-line microstrip filters, which dramatically reduce the CPU time for the design process.
Proceedings ArticleDOI
A CAD environment for performance and yield driven circuit design employing electromagnetic field simulators
TL;DR: A CAD environment for performance and yield driven circuit design with electromagnetic (EM) field simulations employed within the optimization loop is described and microstrip structures are accurately simulated and their responses are incorporated into the overall circuit analysis.