Simulation-Driven Design Optimization and Modeling for Microwave Engineering

Topics include conventional and surrogate-based design optimization techniques, methods exploiting adjoint sensitivity, simulation-based tuning, space mapping, and several modeling methodologies, such as artificial neural networks and kriging. Applications and case studies include microwave filters, antennas, substrate integrated structures and various active components and circuits. The book also contains a few introductory chapters highlighting the fundamentals of optimization and modeling, gradient-based and derivative-free algorithms, metaheuristics, and surrogate-based optimization techniques, as well as finite difference and finite element methods.

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Graduates, lecturers, and researchers in electrical engineering, as well as engineers who use numerical optimization in their design work. This book will be of great interest to researchers in the fields of microwave engineering, antenna design, and computational electromagnetics.

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There was an error posting your review. Abstract In the last two decades, artificial neural network ANN technology has leaped forward and is now being applied in different areas such as speech recognition, control, telecommunication, remote sensing, pattern recognition, etc Abstract In the last two decades, artificial neural network ANN technology has leaped forward and is now being applied in different areas such as speech recognition, control, telecommunication, remote sensing, pattern recognition, etc.

ANN application to the field Among them, the newly discovered electromagnetically induced transparency EIT has attracted much interest. In this paper, we Different from EITs based on closely coupled resonances, we use decoupled electrically induced resonances to achieve a low-loss transparency along with an optimal impedance matching with air. Satisfying the condition of a lossless perfectly matched layer, such transparency and opacity can be obtained in a wide range of incident angles. We validate our approach by experimentally demonstrating two electrically controlled steering antennas based on diffractive grating effect, both with thin planar apertures and binary digital control circuits.

The proposed approach can be extended to higher frequencies, achieving configurable diffractive devices at millimeter-wave and terahertz frequencies. Radio-frequency nanoelectronics — Bridging the gap between nanotechnology and R. ABSTRACT In view to the new epochal scenarios that nanotechnology disclose, nanoelectronics has the potential to introduce a paradigm shift in electronic systems design similar to that of the transition from vacuum tubes to semiconductor ABSTRACT In view to the new epochal scenarios that nanotechnology disclose, nanoelectronics has the potential to introduce a paradigm shift in electronic systems design similar to that of the transition from vacuum tubes to semiconductor devices.

Since many nano-scale devices and materials exhibit their most interesting properties at radio-frequencies RF , nanoelectronics provides an enormous and yet widely undiscovered opportunity for the microwave engineering community. The aim of RF nanoelectronics is to close the gap between the nanosciences and a new generation of multifunctional devices, circuits, and systems, for a broad range of applications and operating frequencies, up to the optical region.

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The paper presents an overview of some of the main research fields of RF nanoelectronics, by i introducing theoretical foundations of the novel nano-scale materials in particular, carbon nanotubes, graphene , ii highlighting novel concepts and applications, iii focusing on the investigation of the electromagnetics and quantum transport phenomena in nanodevices. Analytical analysis of second-order Stokes wave in Brillouin ring fiber laser.

Modeling and simulation for small system integration of military and homeland security applications. In particular, the implementation of an accelerated interactive modeling AIM environment produces effective engineering solutions for tackling difficult and complex technical issues for combining 3D mechanical design and microwave engineering.

In addition, using established small systems engineering principles and the effective use of collaborative input at the start of a development effort that incorporates a diverse range of areas like optics, mechanics, electronics, software, thermal modeling, electromagnetism, surface chemistry, and manufacturing plays an important role in the success of future military and homeland security applications. Limitations of the transmission line theory application: Approximation errors quantification and relevance of remedial approaches. The main assumptions are reviewed with the approximation made when deriving the classical transmission line The main assumptions are reviewed with the approximation made when deriving the classical transmission line equations from Maxwell's equations.

Some practical situations where the classical transmission line theory is limited are shown. These situations include the resonance frequencies and high frequency regions when the height of the line is no longer smaller than the minimum significant wavelength. In the last two decades, artificial neural network ANN technology has leaped forward and is now being applied in different areas such as speech recognition, control, telecommunication, remote sensing, pattern recognition, etc.

ANN application to the field of microwaves is very recent. This article reviews the development of neural network techniques, introduces some basic concepts involved in it, and gives a comprehensive survey of neural network application to different branches of microwave engineering. This paper details a theoretical modeling of Brillouin ring fiber laser which incorporates the interaction between multiple Brillouin Stokes signals.

The ring cavity was pumped at several Brillouin pump BP powers and the output was The ring cavity was pumped at several Brillouin pump BP powers and the output was measured through an optical coupler with various coupling ratios. The first-order Brillouin Stokes signal was saturated with the presence of the second-order Stokes signal in the cavity as a result of energy transfer between them.