Uncategorized

Right Hand Circular Polarization (RHCP) Animation

Uniform plane wave traveling in +z direction Also see below:Oblique Plane Wave Reflection From Half Space Radiation from a Circularly Tapered Dielectric Waveguide Right Hand Circular Polarization (RHCP) Animation Linear Polarization Animation Left Hand Elliptical Polarization (LHEP) Animation Standing Wave Pattern (SWR) Animation Electromagnetic Propagation of UWB Short Pulse in Random Medium Dipole Antenna Radiation… Continue reading Right Hand Circular Polarization (RHCP) Animation

Uncategorized

Radiation from a Circularly Tapered Dielectric Waveguide

Finite-difference time-domain (FDTD) simulation of a dielectric waveguide terminated with a circular tapering. The dielectric permittivity of the waveguide is 2.2 and air is the ambient medium. Such antennas are developed for ground penetrating technology (GPR) technology to reduce the footprint of the antenna. Also see below:Oblique Plane Wave Reflection From Half SpaceRadiation from a… Continue reading Radiation from a Circularly Tapered Dielectric Waveguide

Uncategorized

Dipole Antenna Radiation

Finite-difference time-domain (FDTD) simulation of a 2 wavelengths long dipole antenna at 400 MHz in free space. The radiation pattern is very different than that of the traditional half-wavelength dipole antenna. Nulls in the broadside and endpoints are clearly visible Dish Antenna Animation (Parabolic reflector) var _gaq = _gaq || []; _gaq.push([‘_setAccount’, ‘UA-24872537-1’]); _gaq.push([‘_trackPageview’]); (function()… Continue reading Dipole Antenna Radiation

Uncategorized

Dish Antenna Animation (Parabolic reflector)

Finite-difference time-domain (FDTD) simulation of a parabolic reflector antenna in the transmitting phase. Reflector antennas are frequency-independent antennas and they are highly directive. As long as the source is located at the focal point, the reflected field travels in the broadside direction. In this simulation, two short pulses – first one at central frequency of… Continue reading Dish Antenna Animation (Parabolic reflector)