About the book
Electromagnetic interference (EMI) problems have been attracting considerable attention due to the extensive use of electromagnetic (EM) waves in wireless communications. EM waves of 0.8–1.2 GHz are used for mobile phones, 2.45 GHz for electronic ranges, 5.6–8.2 GHz (G-band) for synthetic aperture radar (SAR) or microwave communication on the ground, 8.2–12.4 GHz (X-band) and 12.4–18 (Ku-band) for SAR or electron spin resonance (ESR) apparatus. Microwave absorbing material has regained considerable importance as these play a key role in stealth technology where these materials are used in the form of paint coated on the surface of the object to reduce the radar cross-section (RCS) effectively. Apart from radar cross-section reduction, microwave absorber finds applications in other fields as well, such as in electronic applications for antenna’s sidelobe reduction, construction of anechoic chamber, preservation of electromagnetic interference, as protective sheets in a microwave oven, removal of ghost images in TV pictures, noise suppression in cellular phones, etc. This book will tend to provide the reader with a comprehensive overview of the current state-of-the-art and history of materials comprising of magnetic, dielectric and industrial waste used in this critically important area.