Microwave CAD in the year 2010?A panel discussion

Booton, Richard C.

doi:10.1002/(sici)1099-047x(199911)9:6<439::aid-mmce2>3.0.co;2-y

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…These progresses have been possible thanks to the development of computer-aided design (CAD) tools for microwave circuits. Although numerous microwave CAD techniques have been proposed and implemented, the optimization of 3-D microwave components still continues to be a major bottleneck in CAD tools for microwave circuits, regardless of advances in computing power [4].…”

Section: Introductionmentioning

confidence: 99%

Efficient optimization‐oriented design methodology of high‐order 3‐D filters using 2‐D and 3‐D electromagnetic simulators

Hinojosa

Pereira

Bozzi

et al. 2014

Circuit Theory & Apps

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SUMMARYThis paper proposes a computationally highly efficient interface between two-dimensional (2-D) and threedimensional (3-D) electromagnetic (EM) simulators for the optimization-oriented design of high-order 3-D filters. In a first step, the novel optimization-oriented design methodology aligns the 3-D EM simulator response with the 2-D EM simulator response of a low-order 3-D filter by using an inverse linear space mapping optimization technique. Then, a second mapping performs a calibration with the optimal 2-D and 3-D design parameters obtained from the first mapping. The optimization of high-order filters is carried out using only the efficient 2-D EM simulator, and the calibration equations directly give the design parameters of the 3-D filter. The potential and the effectiveness of the proposed optimization-oriented design methodology are demonstrated through the design of C-band 3-D evanescent rectangular waveguide bandpass filters with increasing orders from three to eight.

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Section: Introductionmentioning

confidence: 99%

Efficient optimization‐oriented design methodology of high‐order 3‐D filters using 2‐D and 3‐D electromagnetic simulators

Hinojosa

Pereira

Bozzi

et al. 2014

Circuit Theory & Apps

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“…However, 3D EM simulators will not realize their full potential to the designer unless they are combined with optimization algorithms to automatically adjust designable parameters [1]. In a panel discussion on the state of microwave computer-aided design (CAD) in the year 2010, M. Mongiardo predicted much of the emphasis will shift to an optimization and design environment that allows integrated design [2]. In this sense, we want to focus this work in a particular case of design process, which is shown in the flowchart of Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…The interest in interfacing various rigorous EM simulators into CAD frameworks, including the use of mapping between design spaces of different dimensionality, has been the purpose of numerous works [2][3][4][5][6][7]. To successfully interface EM simulators we need a powerful computational optimization tool to adjust designable parameters in order to meet design specifications.…”

Section: Introductionmentioning

confidence: 99%

2D to 3D rectangular waveguide filter designs from linear iterated prediction space mapping optimization

Hinojosa¹,

Pereira

Álvarez‐Melcón

2009

Micro & Optical Tech Letters

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In this article, an optimization procedure is described to align electromagnetic (EM) three‐dimensional (3D) models with two‐dimensional (2D) models for the design of RF/microwave circuits. The optimization procedure is realized from a modified standard space mapping (SM) approach. The mapping function between the 2D and 3D parameter spaces is directly obtained from a linear iterated prediction method, which reduces the computational cost and also avoids inverse transformations. The linear iterated prediction 2D to 3D SM optimization of evanescent rectangular waveguide bandpass filters with inductive posts for the 2D models and non‐inductive posts for the 3D models illustrate the advantages and the challenges of this approach. The proposed method is simple to be implemented, it requires a reduced computational cost and it can be useful for CAD environment with 2D and 3D circuit structure electromagnetic (EM) analysis. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1979–1983, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24459

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“…Fig.1(a) shows a dual-band shorted patch antenna and Fig.1(b) shows the shape of a broadband microstrip antenna. In industrial antenna design the first phase (the structure selection and modification) is carried out exclusively by the human designer and will most probably remain so for the next decade [3]. For the second phase the engineering designer makes use of numerical Computer Aided Design (CAD) software.…”

Section: Introductionmentioning

confidence: 99%

A Shape-Function Grammar Approach for the Synthesis and Modelling of Pixel-Microstrip-Antennas

Muscat

2009

2009 Third International Conference on Advanced Engineering Computing and Applications in Sciences

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Classical microstrip antenna models are either an empirically derived mathematical formula or a full-wave numerical solution. The former type is limited to specific simple geometries, is very fast to compute, and to some extent relates dimensional attributes to electromagnetic properties. On the other hand the latter is applicable to any arbitrary geometrical shape and is very accurate, but is computationally intensive and does not give an explanation of how the device works. In this paper a novel approach to modelling microstrip antennas that address this void is proposed. The model makes use of a coupled shape-function grammar to yield an estimate of the electromagnetic properties of arbitrary shaped microstrip antennas and also relates shape attributes to electromagnetic properties. The model is demonstrated on a pixel microstrip antenna structure in analysis and synthesis.

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Microwave CAD in the year 2010?A panel discussion

Cited by 7 publications

References 2 publications

Efficient optimization‐oriented design methodology of high‐order 3‐D filters using 2‐D and 3‐D electromagnetic simulators

Efficient optimization‐oriented design methodology of high‐order 3‐D filters using 2‐D and 3‐D electromagnetic simulators

2D to 3D rectangular waveguide filter designs from linear iterated prediction space mapping optimization

A Shape-Function Grammar Approach for the Synthesis and Modelling of Pixel-Microstrip-Antennas

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