Create rectangular waveguide
waveguide object is an open-ended rectangular
waveguide. The default rectangular waveguide is the WR-90 and functions in the X-band.
The X-band has a cutoff frequency of 6.5 GHz and ranges from 8.2 GHz to 12.5
open-ended rectangular waveguide.
wg = waveguide
a rectangular waveguide with additional properties specified by one, or more
name-value pair arguments.
wg = waveguide(Name,Value)
Name is the property name and
Value is the corresponding value. You can specify
several name-value pair arguments in any order as
Name1,Value1,...,NameN,ValueN. Properties not
specified retain their default values.
FeedHeight— Height of feed
0.0060(default) | scalar
Height of feed, specified as a scalar in meters. By default, the feed height is chosen for an operating frequency of 12.5 GHz.
FeedWidth— Width of feed
6.0000e-05(default) | scalar
Width of feed, specified as a scalar in meters.
Length— Rectangular waveguide length
0.0240(default) | scalar in meters
Rectangular waveguide length, specified as a scalar in meters. By default, the waveguide length is 1λ, where:
c = speed of light,
f = operating frequency of the waveguide
Width— Rectangular waveguide width
0.0229(default) | scalar in meters
Rectangular waveguide width, specified as a scalar in meters.
Height— Rectangular waveguide height
0.0102(default) | scalar
Rectangular waveguide height, specified as a scalar in meters.
FeedOffset— Signed distance of feedpoint from center of ground plane
Signed distance of feedpoint from center of ground plane, specified as a two-element vector in meters. By default, the feed is at an offset of λ/4 from the shortened end on the X-Y plane.
Load— Lumped elements
Lumped elements added to the antenna feed, specified as a lumped element
object handle. For more information, see
lumpedelement is the object handle for the load
Tilt— Tilt angle of antenna
0(default) | scalar | vector
Tilt angle of the antenna, specified as a scalar or vector with each element unit in degrees. For more information, see Rotate Antennas and Arrays.
'TiltAxis',[0 1 0;0 1 1]
tilts the antenna at 90 degree about two axes, defined by vectors.
TiltAxis— Tilt axis of antenna
[1 0 0](default) | three-element vector of Cartesian coordinates | two three-element vectors of Cartesian coordinates |
Tilt axis of the antenna, specified as:
Three-element vectors of Cartesian coordinates in meters. In this case, each vector starts at the origin and lies along the specified points on the X-, Y-, and Z-axes.
Two points in space, each specified as three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points in space.
A string input describing simple rotations around one of the principal axes, 'X', 'Y', or 'Z'.
For more information, see Rotate Antennas and Arrays.
'TiltAxis',[0 1 0]
'TiltAxis',[0 0 0;0 1 0]
ant.TiltAxis = 'Z'
|Display antenna or array structure; Display shape as filled patch|
|Display information about antenna or array|
|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|
|Design prototype antenna or arrays for resonance at specified frequency|
|Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays|
|Input impedance of antenna; scan impedance of array|
|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|
|Return loss of antenna; scan return loss of array|
|Voltage standing wave ratio of antenna|
Create a rectangular waveguide using default dimensions. Display the waveguide.
wg = waveguide
wg = waveguide with properties: Length: 0.0240 Width: 0.0229 Height: 0.0102 FeedWidth: 6.0000e-05 FeedHeight: 0.0060 FeedOffset: [-0.0060 0] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]
Create a WR-650 rectangular waveguide and display it.
wg = waveguide('Length',0.254,'Width',0.1651,'Height',0.0855,... 'FeedHeight',0.0635,'FeedWidth',0.00508,'FeedOffset',[0.0635 0]); show(wg)
Plot the radiation pattern of this waveguide at 1.5 GHz.
 Balanis, Constantine A.Antenna Theory. Analysis and Design. 3rd Ed. New York: John Wiley and Sons, 2005.