Karthikeya G. S.

With the exponential rise of wireless devices, the electromagnetic interference (EMI) phenomenon affects the performance of these devices. Hence, it is critical to investigate various approaches to hinder the EMI effects. One of the most popular techniques to reduce EMI is to design and deploy microwave absorbers. This book presents the design requirements of novel electromagnetic wave shielding materials for modern commercial devices. A detailed in-depth analysis of the material synthesis with numerous practical case studies are presented in this book. The principles of microwave characterization of these materials are also explored. The definitions and procedural methods to characterize the shielding effectiveness are also presented. The practical use of polymer nanocomposite prepared by MWCNT, SWCNT, nanofibers, graphene and various ferrites in the polymer matrix is discussed. Practical use-case scenarios of design processes of various polymers along with general nanomaterials, carbon nanomaterials, inorganic magnetic nanoparticles, are also investigated. Lastly, alternate shielding methods are reported in the book.

This book presents the design requirements of antenna integration for modern commercial devices such as smartphones, dongles, and access points. Practical use-case scenarios of smartphone and the design process of the antenna system for the same are highlighted. The feasibility of scaling up sub-6GHz to mmWave antennas is also discussed in detail followed by a plethora of design examples which could be panel mounted to modern-day commercial smartphones. The unique requirement of gain switchability is introduced with feasible practical antenna designs. High efficiency antennas for 5G base stations is introduced along with a design example on planar all-metallic antenna. Beam switchability requirement for base station is illustrated with a couple of compact antenna system examples. Variety of feeding techniques for mmWave antennas is elaborated in this book. Finally, low-cost antenna designs for future wireless devices are illustrated.?

This book presents the design requirements of antenna integration for modern commercial devices such as smartphones, dongles, and access points. Practical use-case scenarios of smartphone and the design process of the antenna system for the same are highlighted. The feasibility of scaling up sub-6GHz to mmWave antennas is also discussed in detail followed by a plethora of design examples which could be panel mounted to modern-day commercial smartphones. The unique requirement of gain switchability is introduced with feasible practical antenna designs. High efficiency antennas for 5G base stations is introduced along with a design example on planar all-metallic antenna. Beam switchability requirement for base station is illustrated with a couple of compact antenna system examples. Variety of feeding techniques for mmWave antennas is elaborated in this book. Finally, low-cost antenna designs for future wireless devices are illustrated.?