Journal ArticleDOI
Space mapping technique for electromagnetic optimization
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TLDR
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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Journal ArticleDOI
Automated Design of Common-Mode Suppressed Balanced Wideband Bandpass Filters by Means of Aggressive Space Mapping
Marc Sans,Jordi Selga,Paris Velez,Ana Cecilia Rodriguez,Jordi Bonache,Vicente E. Boria,Ferran Martin +6 more
TL;DR: In this article, the authors proposed a balanced microstrip wideband bandpass filters by means of aggressive space mapping (ASM) optimization, based on multisection mirrored stepped impedance resonators coupled through quarter-wavelength transmission lines acting as admittance inverters.
Journal ArticleDOI
Electromagnetic design of high‐temperature superconducting microwave filters
John W. Bandler,R.M. Biernacki,S.H. Chen,William J. Getsinger,P.A. Grobelny,Charles Moskowitz,S.H. Talisa +6 more
TL;DR: In this article, the authors present novel approaches to electromagnetic design of high-temperature superconducting (HTS) quarter-wave parallel coupled-line microstrip filters, which dramatically reduce the CPU time needed in the design process.
Journal ArticleDOI
A space-mapping design framework
TL;DR: This presentation is a reference guide for microwave designers using the SM technique, and an instructive "multiple cheese-cutting" example demonstrates the SM approach to engineering design and some possible pitfalls.
Journal ArticleDOI
Space Mapping Optimization of a Cylindrical Voice Coil Actuator
TL;DR: In this article, an optimal design problem of an electromagnetic actuator is formulated by defining the set of design variables, the constraints, and the optimality criterion, and an obtained design is verified by measurements.
Journal ArticleDOI
Variable-fidelity probability of improvement method for efficient global optimization of expensive black-box problems
TL;DR: The proposed VF-PI method is more efficient and robust than the four compared methods on the illustrated cases, enabling the proposed approach to handle VF optimization problems with constraints.
References
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Journal ArticleDOI
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.