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We are always surrounded by electromagnetic waves and fields of
various spectra. This book explains basic electromagnetic theory
with the help of design formulations i.e. mathematical background
on antennas along with experimentations, which has made this book
unique. The main purpose of this book is to embed mathematical EM
theory of dielectric resonator antennas with experimental
validation so that understanding of concepts takes place.
Initially, basic understanding of philosophy of dielectric
resonators has been discussed, then it is supported with
mathematical modeling and later same is implemented with its
prototype model along with experimentations. The modes theory gives
important analysis on currents distribution, impedance analysis and
radiation pattern in DRA. Circular polarization can built signal
robustness, case studies on circular polarization has been
included. Equivalent RLC circuit concept has been introduced.
Challenges of switching from microwave to terahertz has been
briefly discussed. Nano DRA will revolutionize the wireless
technology. Nano DRA ,Terahertz DRA and Quantum DRA have analyzed
and studied.
We are always surrounded by electromagnetic waves and fields of
various spectra. This book explains basic electromagnetic theory
with the help of design formulations i.e. mathematical background
on antennas along with experimentations, which has made this book
unique. The main purpose of this book is to embed mathematical EM
theory of dielectric resonator antennas with experimental
validation so that understanding of concepts takes place.
Initially, basic understanding of philosophy of dielectric
resonators has been discussed, then it is supported with
mathematical modeling and later same is implemented with its
prototype model along with experimentations. The modes theory gives
important analysis on currents distribution, impedance analysis and
radiation pattern in DRA. Circular polarization can built signal
robustness, case studies on circular polarization has been
included. Equivalent RLC circuit concept has been introduced.
Challenges of switching from microwave to terahertz has been
briefly discussed. Nano DRA will revolutionize the wireless
technology. Nano DRA ,Terahertz DRA and Quantum DRA have analyzed
and studied.
This book covers resonating modes inside device and gives insights
into antenna design, impedance and radiation patterns. It discusses
how higher-order modes generation and control impact bandwidth and
antenna gain. The text covers new approaches in antenna design by
investigation hybrid modes, H_Z and E_Z fields available
simultaneously, and analysis and modelling on modes with practical
applications in antenna design. The book will be prove useful to
students, researchers and professionals alike.
MAGNETO HYDRODYNAMIC ANTENNA: Design and Applications discusses
mathematical solutions of rectangular waveguide modes in
homogeneous medium, Estimating inhomogeneous dielectric in a
rectangular waveguide by classical method, Mathematical solution of
resonant modes in cylindrical waveguides, MHD antenna analysis by
cavity resonator method, Introduction to magneto hydrodynamics
system, Mathematical solution of smart MHD antenna excited at the
centre, Two dimensional solution of cylindrical MHD antenna, Design
of reconfigurable MHD antenna, Analysis of stacked cylindrical MHD
antenna, Discrete solutions of fluid frame MHD antenna with
anechoic chamber measurements, Analysis of nonlinear permittivity
using Kronecker Tensor, Superstrate based high gain antenna and
Design of concentric cylindrical resonator antenna. The book
includes Annexures with basic design formulations and Case studies
based on implemented MHD antennas.
Terahertz dielectric resonator antennas (DRAs) provide ultrafast
data transfer rates using large bandwidth and multimode operations,
which make them ideal for high speed communication due to their low
loss and high efficiency. They can work at microwave, terahertz or
optical frequencies, and are compact in size, which makes them well
suited for advanced applications in sensing, scanning and imaging.
New geometries are being developed for conical optical DRAs,
cylindrical optical DRAs and spherical optical DRAs. Spherical
optical DRAs have features of super directivity which can be used
in quantum radars. Cylindrical optical DRAs with photo diodes can
be used for wireless energy harvesting. This book covers the
theory, modelling, design and implementation of DRA technologies at
the microwave, terahertz or optical regime for future applications
in wireless high-speed communication, wireless personal
communication and sensor networks. Case studies on new geometries
with prototype models are included at the end of this book.
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