| Radio
frequency animations and java applets |
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Animations of the 2D
propagation of electromagnetic waves in the presence of different distributions
of refractive index This page contains animations of numerical solutions to
Maxwell's equations in a 2D domain (using the finite-difference time-domain
method with a staggered "Yee lattice"). A wave is excited at the bottom of the
domain and propagates upwards |
| Communication
engineering applets to understanding some of the principles of telecommunication engineering |
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Electromagnetic field animations |
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Electromagnetic theory antennas, polarization, standing wave, reflection and
transmission, radiation from the source, diffraction by a half-infinite ground
plane, microwave circuits, ..., a
tip |
| Electromagnetic
oscillating circuit this simulation deals with an electromagnetic oscillating circuit, consisting of a capacitor and an inductor |
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GPS Animation
GPS Animation, What is the Global Positioning System? |
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GPS Animation |
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GPS Animation
How GPS Works |
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GPS Global Positioning System GPS Global Positioning System Animation |
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How Radio Communication
Works How Radio Communication Works |
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Localisation par satellite (GPS). Global Positioning System |
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Mobile Computing Applets
CDMA, IrDA, Bluetooth-Scatternet, DSDV Routing, DSR Routing, OLSR Routing,
Link-Reversal |
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Physics, electromagnetism and
quantum mechanics details the findings of Larry Spring in areas such as
physics, electromagnetism and quantum mechanics |
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Phase Locked
Loop (PLL) Phase locked loop (PLL) is used for synchronous demodulation of
AM signals with suppressed carrier or little carrier |
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Propagation loss models used in cellular system planning these applets plot the graphs of path loss (dB)
against distance (km) on a grid |
| T-network
tuner simulator a simulator for the popular, series capacitor, parallel
inductor T-network tuners, SWR |
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Time and
Frequency Domains To illustrate the Frequency Domain representation of a
single sinusoid |
| Time
domain vs. frequency domain the three-dimensional plot of frequency, amplitude and time that shows the relationship between the time and
frequency domains. It does so by looking at the fundamental of a sine wave -- and up to three harmonics -- as they are formed by rotating vectors |
| Tuning
a radio receiver this tutorial demonstrates how variable capacitors are used with inductor coils in tuning circuits of radios, television sets, and a number of other
devices that must isolate electromagnetic radiation of selected frequencies |
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Horizontaal |
Antennas  |
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1.5 Wavelength Dipole Antenna Energy Distribution Radiated By a 1.5
Wavelength Dipole Antenna |
| Antenna directivity
Radiation profile (angular dependence of the Poynting flux = directivity) can be varied by a suitable choice of the number of antennas in an array and the phase
angle between neighbouring radiation fields |
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Antenna
pattern of a linear array this applet displays the radiation field (magnitude of the electric field) of an antenna array, specifically a uniform
linear array |
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Antenna
pattern of a linear array |
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Broadband
Double-Ridged Horn Antenna |
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Dipôle en Français |
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Dipole antenna |
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Dipole antenna
Electric force lines radiated from a small dipole |
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Dipole antenna
Radiation Pattern of a Dipole Antenna As a Function of Dipole Length |
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Dipole antenna
beside a head shows a dipole antenna radiating at 1800MHz beside a human
head |
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Dipole array |
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Dipôle à grande distance en Français |
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Electric dipole The contour of the potential and the electric force lines
produced by an electric dipole |
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Electrostatic field and electromagnetic field comparison between
electrostatic field and electromagnetic field |
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Electromagnetic
field animations |
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Folded dipole
antenna Folded dipole antenna, The animation below shows a folded dipole
antenna driven by a sinusoidal signal at 454MHz. The animation shows the
magnetic field perpendicular to the plot |
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Half-wavelength dipole antenna |
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Handphone Antenna
Simulation of Electromagnetic Field in A Realistic Human Head Model under RF
Radiation from A Nearby Handphone |
| Linear
antennas linear dipole antenna, two dipole array |
| Linear
arrays radiation pattern of a single element antenna, This applet displays
the radiation electric field magnitude of an 'n-element' uniform linear array |
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Near field of a mobile phone at 2.1GHz
Near field of a mobile phone at 2.1GHz. The electric field strength is shown,
Radiation of a mobile phone- PIFA-Antenna |
| Parabole
antenne - construction en Français |
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Parabolic reflectors and antennas this applet helps you understand, interactively, why the
parabolic shape is important and its use as a reflector. The parabolic reflector
is widely used and it is important to understand its reflecting properties |
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POLARIZAÇÃO DE ONDAS Radiation field |
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Radiation in an automobile with
normal and with roof-antenna |
| Radiation
field (magnitude of the electric field) of an antenna array |
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Radiation from an
oscillating electric dipole Animation shows the electric field lines due to
an electric dipole oscillating vertically at the origin |
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Radiation from a quarter wave antenna part of the course: electromagnetic
fields |
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Radiation from a quarter wave antenna
The animation shows electric dipole radiation from a quarter-wave antenna. The
radiation generated by this antenna has a wavelength which is equal to four
times the the half-length of the antenna |
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Radiation pattern of a dipole antenna as a function of dipole length |
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Wave motion in 2 dimensions
close to antennas and other conducting structures This java applet is a
simulation that demonstrates electrodynamics in two dimensions, including setups
which demonstrate electromagnetic waves, reflection at conductors, radiation
from antennas, standing waves, waveguides, and diffraction |
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Yagi Antenna
shows a Yagi antenna driven by a sinusoidal signal at 454MHz. The animation
shows the magnetic field perpendicular to the plot using a dB scale |
| Yagi
antenna modeling applet you can change the frequency, element diameter, and number
of segments used to solve the equations by typing in the input fields provided |
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Horizontaal |
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Last updated on:
2008-06-12
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