"Antennas" redirects here. For other uses of "antenna", see Antenna (disambiguation).In radio engineering, an antenna or aerial is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.[1] In transmission, a radio transmitter supplies an electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception, an antenna intercepts some of the power of a radio wave in order to produce an electric current at its terminals, that is applied to a receiver to be amplified. Antennas are essential components of all radio equipment. An antenna is an array of conductors (elements), electrically connected to the receiver or transmitter. Antennas can be designed to transmit and receive radio waves in all horizontal directions equally (omnidirectional antennas), or preferentially in a particular direction (directional, or high-gain, or “beam” antennas). An antenna may include components not connected to the transmitter, parabolic reflectors, horns, or parasitic elements, which serve to direct the radio waves into a beam or other desired radiation pattern. Strong directivity and good efficiency when transmitting are hard to achieve with antennas with dimensions that are much smaller than a half wavelength.
Sample Chapter(s)
Preface (50 KB)
Components of the Book:
- Chapter1
Specific Resonant Properties of Non-Symmetrical Microwave Antennas
- Chapter2
Recent Advances in Fabrication Methods for Flexible Antennas in Wearable Devices: State of the Art
- Chapter3
Meta-Wearable Antennas—A Review of Metamaterial Based Antennas in Wireless Body Area Networks
- Chapter4
Circularly Polarized Hybrid Dielectric Resonator Antennas: A Brief Review and Perspective Analysis
- Chapter5
High Fluence Chromium and Tungsten Bowtie Nano-antennas
- Chapter6
VLBI measurement of the vector baseline between geodetic antennas at Kokee Park Geophysical Observatory, Hawaii
- Chapter7
Liquid Metal Antennas: Materials, Fabrication and Applications
- Chapter8
Small Antennas for Wearable Sensor Networks: Impact of the Electromagnetic Properties of the Textiles on Antenna Performance
- Chapter9
Low-Cost Beamforming Concept for the Control of Radiation Patterns of Antenna Arrays Installed onto UAVs
- Chapter10
Textile Antenna for Bio-Radar Embedded in a Car Seat
- Chapter11
Wireless Sensor Network Security Enhancement Using Directional Antennas: State of the Art and Research Challenges
- Chapter12
Cooperative interactions between nano-antennas in a high-Q cavity for unidirectional light sources
- Chapter13
The Use of 3D Printing Technology for Manufacturing Metal Antennas in the 5G/IoT Context
- Chapter14
Comparative study of plasmonic antennas fabricated by electron beam and focused ion beam lithography
- Chapter15
Synchronously wired infrared antennas for resonant single-quantum-well photodetection up to room temperature
Readership:
Students, academics, teachers and other people attending or interested in Antennas.
Alexey Nekrasov
Institute for Computer Technologies and Information Security, Southern Federal University, Taganrog 347922, Russia
Colin Fidge
Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia
Bahare Mohamadzade
School of Engineering, Macquarie University, Sydney NSW 2109, Australia
Sabih Ur Rehman
School of Computing and Mathematics, Charles Sturt University, Port Macquarie NSW 2444, Australi
Reza Gharaei
Faculty of Engineering, Islamic Azad University-South Tehran Branch, Tehran 15847-43311, Iran
and more...