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Plasma Antennas, Second Edition

Plasma Antennas, Second Edition
Author: Theodore Anderson
Publisher: Artech House
Total Pages: 350
Release: 2020-11-30
Genre: Technology & Engineering
ISBN: 1630817511

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This updated edition of an Artech House classic contains steering, focusing, and spreading of antenna beams using the physics of refraction of electromagnetic waves through a plasma. Pulsing circuitry for ionizing plasma antennas with low power requirements are covered. New and improved smart plasma antenna and applications to wi-fi and the applications of plasma antennas are discussed. Experimental work on plasma antenna noise and new progress on ruggedization and custom-made plasma tubes are also presented. This unique resource provides readers with a solid understanding of the efficient design and prototype development of plasma antennas to meet the challenge of reducing the power required to ionize the gas at various plasma densities. Thorough coverage of the technical underpinnings of plasma antennas, as well as important discussions on current markets and applications are discussed. Additionally, the book presents experimental work in this cutting-edge area and reveals the latest developments in the field.


WAVE PROPAGATION AND ANTENNA ENGINEERING

WAVE PROPAGATION AND ANTENNA ENGINEERING
Author: KUMAR, SANJAY
Publisher: PHI Learning Pvt. Ltd.
Total Pages: 625
Release: 2015-12-14
Genre: Technology & Engineering
ISBN: 8120351045

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The book is primarily designed to cater to the needs of undergraduate and postgraduate students of Electronics and Communication Engineering and allied branches. It also caters for fundamental requirements of professionals working on design and development of antenna and wave propagation related equipment either in research laboratories or industries or academic institutions elsewhere. The book has been written with intent to grasp the basic understanding of theoretical as well as practical aspects of electromagnetic wave propagation and antenna engineering. The text has been aptly scripted considering the requirements of average students who can easily grasp and comprehend the basics of wave propagation and radiation mechanism of varieties of antennas coupled with their critical functionalities, utilities, advantages/disadvantages without any external assistance of teachers or other reference books. The book broaches very well on practical methods of parametric measurements of antenna with right measuring test equipment and associated tools. The last chapter of the book is dedicated to advance technology adopted in design and development of modern antenna. Key features • A fairly large number of well labelled diagrams to provide practical understanding of the concepts. • The placement of numericals at appropriate places develops confidence among readers and enthuses them further to read in depth to crack any regular or competitive examinations. • Chapter summary highlights important points for quick recap and revision before examination. • Well-crafted multiple choice questions with answers at the end of each chapter to stimulate thought process and prepare better for viva-voce and competitive examinations. • Appropriate number of unsolved numerical problems with answers to improve problem solving skill of students.


Plasma Antennas, Second Edition

Plasma Antennas, Second Edition
Author: Theodore Anderson
Publisher: Artech House Publishers
Total Pages: 0
Release: 2021
Genre: Antennas (Electronics)
ISBN: 9781630817503

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This updated edition of an Artech House classic contains steering, focusing, and spreading of antenna beams using the physics of refraction of electromagnetic waves through a plasma. Pulsing circuitry for ionizing plasma antennas with low power requirements are covered. New and improved smart plasma antenna and applications to wi-fi and the applications of plasma antennas are discussed. Experimental work on plasma antenna noise and new progress on ruggedization and custom-made plasma tubes are also presented.This unique resource provides readers with a solid understanding of the efficient design and prototype development of plasma antennas to meet the challenge of reducing the power required to ionize the gas at various plasma densities. Thorough coverage of the technical underpinnings of plasma antennas, as well as important discussions on current markets and applications are discussed. Additionally, the book presents experimental work in this cutting-edge area and reveals the latest developments in the field.


Plasma-based Radar Cross Section Reduction

Plasma-based Radar Cross Section Reduction
Author: Hema Singh
Publisher: Springer
Total Pages: 67
Release: 2015-09-30
Genre: Technology & Engineering
ISBN: 9812877606

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This book presents a comprehensive review of plasma-based stealth, covering the basics, methods, parametric analysis, and challenges towards the realization of the idea. The concealment of aircraft from radar sources, or stealth, is achieved through shaping, radar absorbing coatings, engineered materials, or plasma, etc. Plasma-based stealth is a radar cross section (RCS) reduction technique associated with the reflection and absorption of incident electromagnetic (EM) waves by the plasma layer surrounding the structure. A plasma cloud covering the aircraft may give rise to other signatures such as thermal, acoustic, infrared, or visual. Thus it is a matter of concern that the RCS reduction by plasma enhances its detectability due to other signatures. This needs a careful approach towards the plasma generation and its EM wave interaction. The book starts with the basics of EM wave interactions with plasma, briefly discuss the methods used to analyze the propagation characteristics of plasma, and its generation. It presents the parametric analysis of propagation behaviour of plasma, and the challenges in the implementation of plasma-based stealth technology. This review serves as a starting point for the graduate and research students, scientists and engineers working in the area of low-observables and stealth technology.


Electromagnetic Properties of a Plasma-covered Antenna

Electromagnetic Properties of a Plasma-covered Antenna
Author: Daniel J. Jacavanco
Publisher:
Total Pages: 22
Release: 1965
Genre: Antennas, Horn
ISBN:

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Antenna patterns (E-plane) of an X-band horn mounted in a ground plane and covered by a plasma slab were measured. A pulsed plasma was produced by capacitor discharge in a rectangular pyrex container of 6 in. x 2 in. x 24 in. i.d. Microwave interferometer measurements of the electron density were made at 9 and 35 Gc. Antenna patterns are presented which show a sharp decrease in radiated power at certain angles corresponding to the 'optics critical angle'. Good agreement is obtained for the movement of the optics critical angle with plasma density. (Author).


Plasma Antenn

Plasma Antenn
Author: Rajneesh Kumar
Publisher: LAP Lambert Academic Publishing
Total Pages: 140
Release: 2011-02
Genre:
ISBN: 9783844305302

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Recently, there has been a revival of interest in plasma antennas because of their potential advantage over the conventional antennas. Hence experiments are aimed at investigating the antenna properties of a reconfigurable plasma antenna. Plasma column is excited by surface wave, which acts as a plasma antenna. Antenna parameters of plasma antenna and equivalent metallic copper antenna are studied. By changing the operating parameters a single plasma antenna (plasma column) can be transformed into multiple antenna elements (striations), which can be treated as a phased array broadside vertical plasma antenna. In addition, physical and antenna properties of reconfigurable plasma antenna can be controlled by operating parameters. Moreover wireless communication capability of this plasma antenna is tested. Striations have always been a subject of academic interest to scientists. Therefore, the studies of striations in surface wave produced plasmas has been extensively done both from experimental as well as theoretical points of view. This book invokes applications of pattern formation or striations of plasmas in plasma antenna technology.


Effects of the Reentry Plasma Sheath on Microwave Antenna Performance

Effects of the Reentry Plasma Sheath on Microwave Antenna Performance
Author: J. Leon Poirier
Publisher:
Total Pages: 82
Release: 1969
Genre: Antenna radiation patterns
ISBN:

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A Trailblazer II rocket was launched on 18 June 1967 from the NASA wallops Island (Va.) Rocket Test Facility to study the properties of the reentry plasma sheath and its effects on microwave antenna performance. The reentry payload consisted of three major subsystems: a plasma diagnostic system, an S- band transponder system, and an X-band telemetry system. The flight data yielded (1) measurements of the influence of the plasma on the radiation pattern distortion, signal attenuation, and impedance mismatch for an S-band slot antenna located at the stagnation point of the nose cone; (2) measurements of the plasma sheath effects on the interantenna coupling between two S-band antennas on the nose cone; and (3) determinations of the electron density profile and gradients in the boundary layer about the nose cone.


Application of Plasma Simulation to Slot and Gap Antennas

Application of Plasma Simulation to Slot and Gap Antennas
Author: Nicholas V. Karas
Publisher:
Total Pages: 40
Release: 1969
Genre: Antennas
ISBN:

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A plasma simulation technique has been applied to determine the effects of a plasma on the aperture admittance of radiators located on structures that are of a nonplanar shape. Specifically the normalized aperture admittance, with and without plasma, has been determined for a slot on cylinders of different radii, and for a cylindrical gap antenna. In addition, the plasma effects on the mutual coupling of two rectangular slots has also been found experimentally and compared to theory. All experimental results show good agreement with theory. (Author).


Plasma Sheaths and Their Effects on Antennas

Plasma Sheaths and Their Effects on Antennas
Author: Stanton Jerrold Peale
Publisher:
Total Pages: 154
Release: 1962
Genre: Antennas (Electronics)
ISBN:

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In recent years there has been a growing interest in general plasma physics. Communications over long distances are affected by plasma clouds and any magnetic fields they contain. While radio sounding is currently used to explore the ionosphere, investigation of plasmas located at points far beyond the ionosphere demands that environmental sampling techniques be developed to produce reliable knowledge.