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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.
Provides background for design and development of metamaterial
structures using novel unit cells. Gives in-depth performance study
of miniaturization of microstrip antennas. Discusses design and
development of both transmission and reflection types metasurfaces
and their practical applications. Verifies a variety of
Metamaterial structures and Metasurfaces experimentally
This book discusses antenna designs for handheld devices as well as
base stations. The book serves as a reference and a handy guide for
graduate students and PhD students involved in the field of
millimeter wave antenna design. It also gives insights to designers
and practicing engineers who are actively engaged in design of
antennas for future 5G devices. It offers an in-depth study,
performance analysis and extensive characterization of novel
antennas for 5G applications. The reader will learn about basic
design methodology and techniques to develop antennas for 5G
applications including concepts of path loss compensation,
co-design of commercial 4G antennas with millimeter wave 5G
antennas and antennas used in phase array and pattern diversity
modules. Practical examples included in the book will help readers
to build high performance antennas for 5G subsystems/systems using
low cost technology. Key Features Provides simple design
methodology of different antennas for handheld devices as well as
base stations for 5G applications. Concept of path loss
compensation introduced. Co-design of commercial 4G antennas with
millimetre wave 5G antennas presented. Comparison of phased array
versus pattern diversity modules discussed in detail. Fabrication
and Measurement challenges at mmWaves and Research Avenues in
antenna designs for 5G and beyond presented. Shiban Kishen Koul is
an emeritus professor at the Centre for Applied Research in
Electronics at the Indian Institute of Technology Delhi. He served
as the chairman of Astra Microwave Products Limited, Hyderabad from
2009-2018. He is a Life Fellow of the Institution of Electrical and
Electronics Engineering (IEEE), USA, a Fellow of the Indian
National Academy of Engineering (INAE), and a Fellow of the
Institution of Electronics and Telecommunication Engineers (IETE).
Karthikeya G S worked as an assistant professor in Visvesvaraya
technological university from 2013 to 2016 and completed his PhD
from the Centre for Applied Research in Electronics at the Indian
Institute of Technology Delhi in Dec.2019. He is a member of
IEEE-Antenna Propagation Society and Antenna Test and Measurement
society.
This book focuses on broadband power amplifier design for wireless
communication. Nonlinear model embedding is described as a powerful
tool for designing broadband continuous Class-J and continuous
class F power amplifiers. The authors also discuss various
techniques for extending bandwidth of load modulation based power
amplifiers, such as Doherty power amplifier and Chireix outphasing
amplifiers. The book also covers recent trends on digital as well
as analog techniques to enhance bandwidth and linearity in wireless
transmitters. Presents latest trends in designing broadband power
amplifiers; Covers latest techniques for using nonlinear model
embedding in designing power amplifiers based on waveform
engineering; Describes the latest techniques for extending
bandwidth of load modulation based power amplifiers such as Doherty
power amplifier and Chireix outphasing amplifiers; Includes
coverage of hybrid analog/digital predistortion as wideband
solution for wireless transmitters; Discusses recent trends on
on-chip power amplifier design with GaN /GaAs MMICs for high
frequency applications.
This book focuses on broadband power amplifier design for wireless
communication. Nonlinear model embedding is described as a powerful
tool for designing broadband continuous Class-J and continuous
class F power amplifiers. The authors also discuss various
techniques for extending bandwidth of load modulation based power
amplifiers, such as Doherty power amplifier and Chireix outphasing
amplifiers. The book also covers recent trends on digital as well
as analog techniques to enhance bandwidth and linearity in wireless
transmitters. Presents latest trends in designing broadband power
amplifiers; Covers latest techniques for using nonlinear model
embedding in designing power amplifiers based on waveform
engineering; Describes the latest techniques for extending
bandwidth of load modulation based power amplifiers such as Doherty
power amplifier and Chireix outphasing amplifiers; Includes
coverage of hybrid analog/digital predistortion as wideband
solution for wireless transmitters; Discusses recent trends on
on-chip power amplifier design with GaN /GaAs MMICs for high
frequency applications.
Radio Frequency Micromachined Switches, Switching Networks, and
Phase Shifters discusses radio frequency microelectromechanical
systems (RF MEMS)-based control components and will be useful for
researchers and R&D engineers. It offers an in-depth study,
performance analysis, and extensive characterization on
micromachined switches and phase shifters. The reader will learn
about basic design methodology and techniques to carry out
extensive measurements on MEMS switches and phase shifters which
include electrical, mechanical, power handling, linearity,
temperature stability, reliability, and radio frequency
performance. Practical examples included in the book will help
readers to build high performance systems/subsystems using
micromachined circuits. Key Features Provides simple design
methodology of MEMS switches and switching networks including SPST
to SP16T switches Gives an in-depth performance study of
micromachined phase shifters. Detailed study on reliability and
power handling capability of RF MEMS switches and phase shifters
presented Proposes reconfigurable micromachined phase shifters
Verifies a variety of MEMS switches and phase shifters
experimentally
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 state-of-the-art millimetre wave antennas for
next generation 5G communications. The propagation losses
associated with the millimetre waves and the signal blockage due to
the objects present between transmitter and receiver require novel
antenna topologies to address these issues. Various aspects of
antenna design related to millimetre wave 5G communication
including 28-GHz channel characteristics, mmWave antenna
requirements, antenna design strategies for 28 GHz, MIMO/multibeam
antennas, and mmWave lens antennas are highlighted. Apart from the
general antenna requirements and study related to the 28 GHz
frequency band, various new metamaterial-based antennas employing
uniaxial or biaxial anisotropic media that enhance the antenna
radiation performance are covered in detail. In addition, various
new antenna systems such as wide-scan antenna arrays,
dual-polarized antennas, and dual-beam/multibeam antennas are
covered in this book. The book concludes with the glimpses of the
millimetre wave lens antennas and the design of very thin planar
metamaterial lens for 5G massive MIMO applications.
This book presents state-of-the-art technologies, trends and
applications with a focus on the healthcare domain for
ultra-wideband (3.1-10.6 GHz) and 60 GHz (57-66 GHz) wireless
communication systems. Due to various key features such as
miniaturized antenna design, low power, high data rate, less
effects on the human body, relatively less crowded spectrum, these
technologies are becoming popular in various fields of biomedical
applications and day-to-day life. The book highlights various
aspects of these technologies related to body-centric
communication, including antenna design requirements, channel
modeling and characterization for WBANs, current fabrication and
antenna design strategies for textile, flexible and implanted
antennas. Apart from the general requirements and study related to
these frequency bands, various application specific topics such as
localization and tracking, physical activity recognition and
assessment, vital sign monitoring and medical imaging are covered
in detail. The book concludes with the glimpses of future aspects
of the UWB and 60 GHz technology which includes IoT for healthcare
and smart living, novel antenna materials and application of
machine learning algorithms for overall performance enhancement.
This book presents state-of-the-art trends in reconfigurable active
and passive planar antennas and their applications in wireless
communication systems operating in the frequency band 5-6 GHz. Due
to various key features such as multifunction antenna design,
compactness, planar nature, and low cost, these technologies are
becoming popular for current and future wireless applications. This
book discusses different novel antenna designs and their working
principles in detail. The modern and future wireless systems
require wideband antennas to accommodate various channels in a
single band or in separate bands. The carrier aggregation (CA) has
been introduced in the modern wireless systems such as LTE-advanced
systems and 5G./6G. In CA, a device can use several channels for
transmission and reception. The used channels can exist in the same
frequency band (intra-band CA) or in distinct bands (inter-band
CA). To accommodate more channels, more bandwidth is required
within the operating band. For portable devices, circularly
polarized (CP) antennas are more advantageous over linearly
polarized antennas since in CP antennas, there is low risk of
misalignment and, hence encountering interference. Circularly
polarized antenna also provides higher link reliability for the
portable devices. To provide high data rates, more bandwidth is
needed to accommodate more channels. Various multifunction,
compact, and wideband antennas for plethora of applications are
addressed in detail in this book. The scope of developing
reconfigurable active antennas for application in beam switching,
beam steering, wireless charging, security systems, etc., is
described. This book concludes by giving glimpses of antenna
requirements for future wireless communication systems.
This book is a reference for researchers who want to learn about
resonant periodic structures for applications in microstrip
circuits. The readers can learn simple methods to analyze these
structures using commercially available software and equivalent
circuit modelling. The application examples demonstrated in the
book will open up new research ideas in this field.
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