Last edited by Melar
Saturday, July 18, 2020 | History

2 edition of Antennas in a non-linear isotropic plasma. found in the catalog.

Antennas in a non-linear isotropic plasma.

Colin Charles Bantin

Antennas in a non-linear isotropic plasma.

by Colin Charles Bantin

  • 248 Want to read
  • 4 Currently reading

Published in [Toronto] .
Written in English

    Subjects:
  • Plasma (Ionized gases),
  • Plasma waves,
  • Radar -- Antennas,
  • Satellites

  • Edition Notes

    ContributionsToronto, Ont. University.
    The Physical Object
    Paginationxii, 223 leaves,
    Number of Pages223
    ID Numbers
    Open LibraryOL18589022M

    The radiation of an isotropic antenna, fills this space. Definition. Isotropic radiation is the radiation from a point source, radiating uniformly in all directions, with same intensity regardless of the direction of measurement. The improvement of radiation pattern of an antenna is always assessed using the isotropic radiation of that antenna. Numerical results are presented for the conductance and susceptance of a slotted‐sphere antenna which is immersed in a compressible, isotropic, and lossless electron plasma. Previous series expansions for the parameters of interest are cast in a form suitable for numerical by:

    A reflectarray antenna consists of an array of unit cells, illuminated by a feeding antenna. The feeding antenna is usually a horn. The unit cells are usually backed by a ground plane, and the incident wave reflects off them towards the direction of the beam. A phase distribution of concentric rings is applied to focus the wavefronts from the feeding antenna into a plane wave. A progressive phase shift can be Missing: isotropic. antenna. Isotropic { antenna radiates equally in all directions in 3D space; theoretically impossible to realize, but a useful reference for quantifying how directive real antennas are. Broadside { main beam is normal to the plane or axis containing the antenna. An example for an antenna oriented along the z-axis is shown in Figure 6(a).File Size: KB.

    An isotropic antenna is a theoretical antenna that radiates power equally in all directions. Think of it as a sphere. An omni directional antenna, on the other hand, radiates power equally all around the antenna in the horizomtal plane but only over a limited range of directions in the vertical plane. sing: isotropic.


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Antennas in a non-linear isotropic plasma by Colin Charles Bantin Download PDF EPUB FB2

The selection also covers insulated loops in lossy media; slot antennas with a stratified dielectric or isotropic plasma layers; and cavity-backed slot antennas. The book will be of great use to electrical, communications, and radio engineers. ­ linear interaction of electromagnetic waves in plasma [1,2].

But only in the last few years has the theory of nonlinear wave inter­ action effects undergone such vigorous development as to result in the formulation of clear phYSical concepts regarding the mech­ anisms of interaction.

The coverage of the text includes various conditions the antennas are subjected to, such as antennas in the interface between two media; antennas in compressible isotropic plasma; and linear antennas in a magnetoionic medium.

The selection also covers insulated loops in lossy media; slot antennas with a stratified dielectric Book Edition: 1. This Chapter is devoted to the theory of surface waves propagating across the axis of symmetry in non-isotropic cylindrical metal waveguides with magneto-active plasma filling.

The presented theoretical results illustrate: how can spatial non-uniformity of both the plasma density and the external magnetic field affect the dispersion properties Author: Volodymyr Girka, Igor Girka, Manfred Thumm. Receiving antennas in a compressible plasma Abstract: The receiving voltages and the receiving maximum available powers of a dipole antenna and a loop antenna immersed in an isotropic compressible plasma are obtained for both an electromagnetic and an electron-plasma wave incidence by making use of the reciprocity by: 1.

Nonlinear antennas combine advances in nonlinear dynamics, active antenna design, and analog microelectronics to generate beam steering and beam forming across an array of nonlinear oscillators. Maxwell’s Equations the receiving antennas. Away from the sources, that is, in source-free regions of space, 0/n, a relationship that we will use extensively in this book.

More generally, constitutive relations may be inhomogeneous, anisotropic, nonlin- types of non-linear waves called solitons, in which the spreading effect of File Size: KB.

isotropic (unmagnetized) warm plasma. space [due to variation in the plasma density profile ne(x)]. The phase change of the wave as it moves from (x1,t1) to position (x2,t2) in the plasma is given by φ = x 2 x1 dxk(x)x −iω0(t2 −t1) () wherewehavetakenφ =0at point. An isotropic antenna is an ideal antenna that radiates its power uniformly in all directions.

There is no actual physical isotropic antenna. However, an isotropic antenna is often used as a reference antenna for the antenna gain. The antenna gain is often specified in dBi, or decibels over isotropic.

The world's first multi-service High Throughput Terminals. Our Solution → Isotropic Systems Appoints Satellite Executive Scott Sprague Chief Commercial Officer. December 5, Isotropic Systems Completes Bi-Directional Over-the-Air Satellite Tests. Novem Trevor Lund Named Senior Vice President of Engineering at Isotropic Systems.

We analyze the response of a dipole antenna to the noise-like and/or regular (quasimonochromatic) plasma oscillations and waves. The antenna is immersed in an isotropic plasma moving with velocity greater than the electron thermal velocity. In the case of a noise field, we calculate the squared spectral power density of the noise voltage at the input of a receiving antenna for Cited by: 3.

Fluctuations and Non-linear Wave Interactions in Plasmas talks about a theory of fluctuations in a homogenous plasma. The title takes into consideration non-linear wave interactions. The text first presents the statistical description of plasma, and then proceeds to covering non-linear electrodynamic Edition: 1.

Why dipole antennas are a half wave long - Duration: Carl Oliverviews. In this paper, the problem of a very low frequency (VLF) linear antenna in an infinite homogeneous anisotropic plasma is treated both analytically and numerically.

Based on the current distribution formula in an isotropic medium, the analytical expression for the current distribution in an anisotropic plasma is : Tong He, Xue Wei Zhang, Wei Yan Pan, Kai Li.

A cylindrical dipole antenna, immersed in a warm homogeneous and isotropic plasma and driven at the center by a delta‐function voltage generator, is treated as a boundary value problem.

The current o Cited by: A theoretical model of an infinite cylindrical antenna, fed by a delta-function generator and immersed in a compressible, isotropic, lossless plasma, is considered in detail. A modal solution is found for the associated wave-guide problem inside the antenna; apart from the slow mode, the wave-guide modes are grouped into three sets: optical Cited by: 7.

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 : Paperback.

In an isotropic plasma column (B0 = 0) and in the magnetized (B0 = ∞), there are only a slow plasma E-wave with frequencies lower the plasma frequency. We study axially symmetric E-wave. Electric and Magnetic Antennas as REAL Transmission Lines in Plasma and the Miracle of Self - Focusing of Whistler Mode Propagation Klaus Bibl Center for Atmospheric Research, University of Lowell, Suffolk St.

Lowell, MAUSA Tel.:+1 Fax:[email protected] Abstract. Antenna basicsBasic antenna parameters, patterns, beam area, Radiation Intensity, Beam efficiency, Directivity and Gain, Antenna aperture, Effective height, Radio communication link, Fields from oscillating dipole, Antenna field zones, Shape Impedance sourcesIntroduction, Power patterns, Power pattern theorem and applications, Radiation intensity, Power patterns, Field /5(2).

In the current work we demonstrate a breakthrough concept using a high frequency (HF) pulsed MW-linear antenna plasma configuration, allowing a scalable concept. By using HF pulses non-linear MW absorption conditions are reached, allowing a reduction of input power to 4 W/cm 2 compared with typically – W/cm 2 for resonance cavity Cited by: Get this from a library!

Nonlinear Effects in Plasma. [Vadim N Tsytovich] -- For some time now there has been an interest in the nop. linear interaction of electromagnetic waves in plasma [1,2]. But only in the last few years has the theory of nonlinear wave inter action. Description; Chapters; Reviews; Supplementary; In this book, various antennae in plasmas, particle beam antennae, phase, group and ray velocity surfaces of various plasma modes, RF ray trajectories and wave fronts in inhomogeneous anisotropic plasmas, plasma waveguides, radiations in ion beams and plasma streams, and useful kinetic plasma dielectric tensor are illustrated with .