Microwave Cavity Antennas


Book Description




Microwave Cavity Antennas


Book Description




Microwave Antennas


Book Description

Microwave Antennas provides a comprehensive discussion on the various areas of concerns in microwave antenna theory and design. The title also presents data from technical journals that cover the advances in the developments of microwave antenna technology. The text first discusses the classification, structure, and operating principles of microwave antennas, and then proceeds to tackling the fundamental problem of microwave antenna theory and methods for its solution. In Chapter III, the selection covers the solution of a number of mathematical problems of diffraction at openings in plane screens. The remaining chapters deal with the various types of antennas, such as horn, lens, slots, and helical. The book will be of great interest to students and practitioners of radio and telecommunications engineering.




Passive Microwave Components and Antennas


Book Description

Modelling and computations in electromagnetics is a quite fast-growing research area. The recent interest in this field is caused by the increased demand for designing complex microwave components, modeling electromagnetic materials, and rapid increase in computational power for calculation of complex electromagnetic problems. The first part of this book is devoted to the advances in the analysis techniques such as method of moments, finite-difference time- domain method, boundary perturbation theory, Fourier analysis, mode-matching method, and analysis based on circuit theory. These techniques are considered with regard to several challenging technological applications such as those related to electrically large devices, scattering in layered structures, photonic crystals, and artificial materials. The second part of the book deals with waveguides, transmission lines and transitions. This includes microstrip lines (MSL), slot waveguides, substrate integrated waveguides (SIW), vertical transmission lines in multilayer media as well as MSL to SIW and MSL to slot line transitions.







Microwaves : Introduction To Circuits,Devices And Antennas


Book Description

This Book Is Intended As An Introductory Text On Microwave Circuits, Devices And Antennas. It Can Be Used Not Only By The Students Of Physics And Engineering At The Graduate And The Postgraduate Levels, But Also By Practising Engineers, Technicians And Research Workers In The Area Of Microwaves. It Contains Comprehensive Up-To-Date Text For A Standard Course On Transmission Lines, Guided Waves, Passive Components (Including Ferrite Devices), Periodic Structures And Filters, Microwave Vacuum Tubes, Solid State Devices And Their Applications, Strip-Lines, Mics And Antennas. It Also Includes Microwave Measurements At Length. The Written Text Is Supplemented With A Large Number Of Suitable Diagrams And A Good Number Of Solved Examples For Reinforcing The Key Aspects. Each Chapter Has A Select Bibliography/References And Good Number Of Problems And Review Questions At The End.







Ultrawideband Antennas for Microwave Imaging Systems


Book Description

This book presents ultrawideband antennas and their applications on microwave imaging. The chapters focus on recent techniques, analysis, and applications along with the future vision of this emerging field of applied electromagnetics. Several emerging topics are essayed, including dielectric resonator antennas and planar ultrawideband antennas for microwave imaging. This resource incorporates modern design concepts, analysis, and optimization techniques based on recent developments. Readers are also provided with an extensive overview of current regulations, including those related to microwave effects in biological tissues.




Performance of a Microwave Antenna System in the Shoulder Region of a Blunt Reentry Nose Cone


Book Description

The purpose of the third AFCRL Trailblazer II reentry vehicle flight was to study the effects of shock ionized air on the performance of a microwave antenna system located in the expansion region of the nose cone. The system consisted of a pair of cavity-backed circumferential slot antennas mounted one behind the other on the conical afterbody of the reentry vehicle. During reentry, measurements of antenna impedance mismatch, interantenna coupling, signal attenuation and antenna pattern distortion were made. The data have been compared with computed values and found to be in good agreement. This experiment thus establishes the validity of the various microwave and flow field models and calculations used to obtain the theoretical values in the shoulder region of the reentry body. These results will now serve as a standard against which to compare the properties of various chemical alleviants which are being studied in other flights. (Author).