Create plane wave excitation environment for antenna or array
planeWaveExcitation object creates an environment where
a plane wave excites an antenna or array. Plane wave excitation is a scattering solution
that solves the receiving antenna problem. By default, the antenna element is a dipole.
The dipole is excited using a plane wave that travels along the positive x-axis having a
environment where a plane wave excites the antenna or array. By default, the
plane wave excites a dipole antenna.
h = planeWaveExcitation
h = planeWaveExcitation(Name,Value)
planeWaveExcitation environment, with
additional properties specified by one or more name-value pair arguments.
Name is the property name and
Value is the corresponding value. You can specify
several name-value pair arguments in any order as
ValueN. Properties not
specified retain their default values.
Element — Antenna or array element
dipole (default) | object handle
Antenna or array element, specified as an object handle.
For infinite array, support for unit cell analysis is for only transmit scenarios.
Direction — Incidence of plane wave
[1 0 0] (default) | three-element real vector
Incidence of plane wave, specified as a three-element real vector.
'Direction',[0 0 1]
Polarization — Polarization of incident electric field
[0 0 1] (default) | three-element complex vector
Polarization of incident electric field in x, y, and z components, specified as a three-element complex vector in V/m The polarization vector gives the orientation and magnitude of the electric field.
'Polarization',[0 1 0]
|Axial ratio of antenna|
|Beamwidth of antenna|
|Charge distribution on metal or dielectric antenna or array surface|
|Current distribution on metal or dielectric antenna or array surface|
|Calculate direction of arrival of plane-wave excitation object|
|Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays|
|Mesh properties of metal or dielectric antenna or array structure|
|Change mesh mode of antenna structure|
|Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array|
|Azimuth pattern of antenna or array|
|Elevation pattern of antenna or array|
|Display antenna or array structure; display shape as filled patch|
Default Plane Wave Excitation
Excite a dipole antenna using a plane wave and view it.
h = planeWaveExcitation; show(h)
The blue arrow shows the direction of propagation of the plane wave. By default, the direction is along the x-axis. The pink arrow shows polarization of the plane wave. By default, the polarization is perpendicular to the direction of propagation i.e. along the z-axis.
Feed Current of Antenna Excited By Plane Wave.
Excite a dipole antenna using plane wave. Calculate the feed current at 70 MHz.
h = planeWaveExcitation cur = feedCurrent(h, 70e6)
h = planeWaveExcitation with properties: Element: [1×1 dipole] Direction: [1 0 0] Polarization: [0 0 1] cur = 0.0179 - 0.0040i
Current Distribution On Antenna
Excite a dipole antenna using a plane wave. The polarization of the wave is along the z-axis and the direction of propagation is along the negative x-axis. View the antenna.
p = planeWaveExcitation('Element', dipole, 'Direction', [-1 0 0], 'Polarization', [0 0 1]); show(p);
Plot the current distribution on the dipole antenna at 70 MHz.
Antenna Excited By Plane Wave In Arbitrary Direction
Consider a dipole excited by a plane wave.
p = planeWaveExcitation; p.Direction = [0 1 1]; show(p)
If you use the above option, any analysis of this antenna will error out as the polarization and direction vector are not orthogonal to each other.
Use the cross-product function to find the appropriate polarization direction of such a wave.
p = planeWaveExcitation; p.Polarization = cross(p.Direction, [0 1 1]); show(p);
Calculate the current distribution of the antenna.
Plane Wave Excitation of Infinite Array
Excite an infinite array using a plane wave.
p = planeWaveExcitation('Element',infiniteArray)
p = planeWaveExcitation with properties: Element: [1x1 infiniteArray] Direction: [1 0 0] Polarization: [0 0 1]
 Balanis, C. A. Antenna Theory. Analysis and Design. 3rd Ed. Hoboken, NJ: John Wiley & Sons, 2005.