Simple array of two antennas
Consider two identical parallel Hertzian dipoles separated by a distance d
The dipole currents have the same amplitude and total phase difference
The electric far-field components at the observation point are
At long distance
Theory of Linear Dipole Antenna Arrays of Linear Dipole Antennas
Antennas are transducers that transfer electromagnetic energy between a transmission line and free space.
From a circuit point of view, a transmitting ant
Waveguide Cavity Resonator
The cavity resonator is obtained from a section of rectangular wave guide, closed by two additional metal plates. We assume again perfectly conducting walls and loss-less dielectric.
The addition of a new set of plates introduce
Assume perfectly conducting walls and perfect dielectric filling the wave guide. Convention : a is always the wider side of the wave guide.
It is useful to consider the parallel plate wave guide as a starting point. The rectangular wave guide has the same
Dielectric Wave Guide
A dielectric waveguide is a structure which exploits total reflection at dielectric interfaces to guide electromagnetic radiation. The simplest case is the symmetric dielectric slab wave guide
For guidance one must have