Create monocone antenna on circular ground plane
monocone object creates a monocone antenna on a
circular ground plane. A classical monocone antenna consists of a cone and a ground
plane. To increase the bandwidth of the antenna, you can modify the antenna by merging
the cone with a circular cylinder. By default, the
creates the modified version.
Create a classical monocone antenna (without the cylinder on top) using one of these methods:
Set the height of the antenna to equal the sum of the cone height and the feed height.
Set the cone height to equal half of the difference between the total height and the feed height. Then set the radius at the aperture to twice the radius at the junction.
monocone antenna with the feedpoint at the center of the ground plane. The
default dimensions are for a resonant frequency of 3.8 GHz.
ant = monocone
properties using one or more name-value pairs. For example,
ant = monocone(Name,Value)
monocone('Height',0.0560) creates a monocone antenna with a
total height of 0.0560 meters.
Radii— Antenna radii
[5.0000e-04 0.0110 0.0110](default) | three-element real vector
Antenna radii, specified as a three-element real vector with each element unit in meters.
The first element represents the narrow radius of the cone.
The second element represents the radius at the junction of the cone and the cylinder.
The third element represents the radius at the top of the cylinder.
ant.Radii = [6.3300e-04 0.0546
Height— Total height of antenna
0.0250(default) | positive scalar
Total height of the antenna from the ground plane to the aperture of the antenna, specified as a positive scalar in meters.
ant.Height = 0.0560
ConeHeight— Vertical height of cone
0.0115(default) | positive scalar
Vertical height of the cone from the apex of the cone to the junction of the cone and the cylinder, specified as a positive scalar in meters.
ant.ConeHeight = 0.02250
FeedHeight— Gap between cone and ground plane
5.0000e-04(default) | positive scalar
Gap between the cone and the ground plane, specified as a positive scalar in meters.
ant.FeedHeight = 0.0034
FeedWidth— Width of feed
5.0000e-04(default) | positive scalar
Width of the feed, specified as a positive scalar in meters.
ant.FeedWidth = 0.0050
GroundPlaneRadius— Radius of ground plane
0.0325(default) | positive scalar
Radius of the ground plane, specified as a positive scalar in meters.
ant.GroundPlaneRadius = 0.050
Conductor— Type of metal material
Type of the metal used as a conductor, specified as a metal material
object. You can choose any metal from the
MetalCatalog or specify a metal of your choice. For more
metal. For more information on metal conductor meshing, see
m = metal('Copper');
m = metal('Copper'); ant.Conductor =
Load— Lumped elements
lumpedElement] (default) |
Lumped elements added to the antenna feed, specified as a
lumpedElement object. You can add a load anywhere on the surface of
the antenna. By default, the load is at the feed. For more information, see
lumpedElement is load added to the antenna feed.
ant.Load = lumpedElement('Impedance',75)
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.
ant.Tilt = 90
'TiltAxis',[0 1 0;0 1 1]
tilts the antenna at 90 degrees about the two axes defined by the
wireStack antenna object
only accepts the dot method to change its properties.
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 vector of Cartesian coordinates in meters. In this case, each coordinate in the 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'
wireStack antenna object only accepts the dot method to change its
|Calculates equivalent cone height, broad radius, and narrow radius for cone|
|Display antenna or array structure; display shape as filled patch|
|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 around specified frequency|
|Radiation efficiency of antenna|
|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|
|Optimize antenna or array using SADEA optimizer|
|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|
|Calculate and plot radar cross section (RCS) of platform, antenna, or array|
|Return loss of antenna; scan return loss of array|
|Calculate S-parameter for antenna and antenna array objects|
|Voltage standing wave ratio of antenna|
Create and view a default monocone antenna.
ant = monocone
ant = monocone with properties: Radii: [5.0000e-04 0.0110 0.0110] GroundPlaneRadius: 0.0325 ConeHeight: 0.0115 Height: 0.0250 FeedHeight: 5.0000e-04 FeedWidth: 5.0000e-04 Conductor: [1x1 metal] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]
Create a monocone antenna with an infinite ground plane.
ant = monocone; ant.GroundPlaneRadius = inf; show(ant)
Plot the radiation pattern of the monocone antenna for the given frequency.
Create a classical monocone antenna by setting the total height of the antenna to equal the sum of cone height and feed height.
ant = monocone; ant.Height = ant.ConeHeight+ant.FeedHeight; show(ant)
Calculate antenna impedance over the given frequency span.
 McDonald, James L., and Dejan S. Filipovic. “On the Bandwidth of Monocone Antennas.” IEEE Transactions on Antennas and Propagation 56, no. 4 (April 2008): 1196–1201. https://doi.org/10.1109/TAP.2008.919226.