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The book is organized in two chapters after an introduction part. The introduction presents the basic principles of the transformation optics concept. Two types of transformation are presented: coordinate transformation and space transformation. Implementations using metamaterials are also discussed. Chapter 1 focuses on coordinate transformation to design devices capable of modifying the electromagnetic appearance of a radiating source. Transformation of a directive radiation pattern into an isotropic one and vice-versa through a space stretching and compression, respectively, and the possibility to create multiple beams are studied. Chapter 2 deals with devices designed using space transformation concept. Quasi-conformal transformation optics (QCTO) is applied for the design of lenses either to compensate for the phase shift created by the conformation of an array of sources or to steer a beam to an off-normal direction. Materials are engineered through 3D printing and prototypes presenting a variation in electromagnetic parameters are fabricated and tested to validate the proposed lenses.
- Focuses firstly on the theoretical tools defining transformation optics concept
- Address the origin of the concept by analyzing Fermat’s principle
- Details the basic approaches and the methods to design practical applications of transformation optics concepts
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