hornConicalCorrugated

Create conical corrugated-horn antenna

Description

The hornConicalCorrugated object creates a conical corrugated-horn antenna, with grooves covering the inner surface of the cone. These antennas are widely used as feed horns for dish reflector antennas as they have smaller side lobes and low cross-polarization level.

Creation

Syntax

ant = hornConicalCorrugated

ant = hornConicalCorrugated(Name,Value)

Description

ant = hornConicalCorrugated creates a corrugated conical-horn antenna object with default dimensions for an operating frequency of 9.54 GHz.

ant = hornConicalCorrugated(Name,Value) sets properties using one or more name-value pairs. For example, ant = hornConicalCorrugated('Radius',1), creates a conical corrugated-horn antenna with a radius of 1 meter.

Properties

Radius — Radius of waveguide

0.011 (default) | real-valued scalar

Radius of the waveguide, specified as a real-valued scalar in meters.

Example: 'Radius',0.760

Example: ant.Radius = 0.760

Data Types: double

WaveguideHeight — Height of waveguide

0.0300 (default) | real-valued scalar

Height of the waveguide, specified as a real-valued scalar in meters.

Example: 'WaveguideHeight',0.0340

Example: ant.WaveguideHeight = 0.0340

Data Types: double

FeedHeight — Height of feed

0.0075 (default) | real-valued scalar

Height of the feed, specified as a real-valued scalar in meters.

Example: 'FeedHeight',0.0085

Example: ant.FeedHeight = 0.0085

Data Types: double

FeedWidth — Width of feed

0.0040 (default) | real-valued scalar

Width of the feed, specified as a real-valued scalar in meters.

Example: 'FeedWidth',0.0200

Example: ant.FeedWidth = 0.0200

Data Types: double

FeedOffset — Signed distance along Y-axis

0.0075 (default) | real-valued scalar

Signed distance of the feed along the Y-axis, specified as a real-valued scalar in meters.

Example: 'FeedOffset',0.03627

Example: ant.FeedOffset = 0.3627

Data Types: double

ConeHeight — Height of cone

0.1 (default) | real-valued scalar

Height of the cone, specified as a real-valued scalar in meters.

Example: 'ConeHeight',0.0540

Example: ant.ConeHeight = 0.0540

Data Types: double

ApertureRadius — Radius of cone aperture

0.0760 (default) | real-valued scalar

Radius of the cone aperture, specified as a real-valued scalar in meters.

Example: 'ApertureRadius',0.0560

Example: ant.ApertureRadius = 0.0790

Data Types: double

Pitch — Distance between two successive corrugations

0.0069 (default) | real-valued scalar

Distance between two successive corrugations, specified as a real-valued scalar in meters.

Example: 'Pitch',0.0060

Example: ant.Pitch = 0.0090

Data Types: double

FirstCorrugatedDistance — Distance of first corrugation from waveguide

0.0291 (default) | real-valued scalar

Distance of first corrugation from waveguide, specified as a real-valued scalar in meters.

Example: 'FirstCorrugatedDistance',0.0360

Example: ant.FirstCorrugatedDistance = 0.0190

Data Types: double

CorrugateWidth — Corrugation width

0.0039 (default) | real-valued scalar

Corrugation width, specified as a real-valued scalar in meters.

Example: 'CorrugateWidth',0.0058

Example: ant.CorrugateWidth = 0.0019

Data Types: double

CorrugateDepth — Corrugation depth

0.0072 (default) | real-valued scalar

Corrugation depth, specified as a real-valued scalar in meters.

Example: 'CorrugateDepth',0.0560

Example: ant.CorrugateDepth = 0.0790

Data Types: double

Conductor — Type of metal material

'PEC' (default) | metal object

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 information, see metal. For more information on metal conductor meshing, see Meshing.

Example: m = metal('Copper'); 'Conductor',m

Example: m = metal('Copper'); ant.Conductor = m

Load — Lumped elements

[1x1 lumpedElement] (default) | lumped element object

Lumped elements added to the antenna feed, specified as a lumped element object handle. 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.

Example: 'Load',lumpedelement. lumpedelement is the object handle for the load created using lumpedElement.

Example: 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.

Example: 'Tilt',90

Example: ant.Tilt = 90

Example: 'Tilt',[90 90],'TiltAxis',[0 1 0;0 1 1] tilts the antenna at 90 degrees about the two axes defined by the vectors.

Note

The wireStack antenna object only accepts the dot method to change its properties.

Data Types: double

TiltAxis — Tilt axis of antenna

[1 0 0] (default) | three-element vector of Cartesian coordinates | two three-element vectors of Cartesian coordinates | 'X' | 'Y' | 'Z'

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.

Example: 'TiltAxis',[0 1 0]

Example: 'TiltAxis',[0 0 0;0 1 0]

Example: ant.TiltAxis = 'Z'

Note

The wireStack antenna object only accepts the dot method to change its properties.

Data Types: double

Object Functions

show	Display antenna or array structure; display shape as filled patch
axialRatio	Axial ratio of antenna
beamwidth	Beamwidth of antenna
charge	Charge distribution on metal or dielectric antenna or array surface
current	Current distribution on metal or dielectric antenna or array surface
design	Design prototype antenna or arrays for resonance at specified frequency
efficiency	Radiation efficiency of antenna
EHfields	Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays
impedance	Input impedance of antenna; scan impedance of array
mesh	Mesh properties of metal or dielectric antenna or array structure
meshconfig	Change mesh mode of antenna structure
optimize	Optimize antenna or array using SADEA optimizer
pattern	Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array
patternAzimuth	Azimuth pattern of antenna or array
patternElevation	Elevation pattern of antenna or array
returnLoss	Return loss of antenna; scan return loss of array
sparameters	S-parameter object
vswr	Voltage standing wave ratio of antenna

Examples

Create a Conical Corrugated-Horn Antenna

Create a conical corrugated-horn antenna object with the cone height set to 0.09 m

ant = hornConicalCorrugated('ConeHeight',0.09);
show(ant)

Plot the radiation pattern of the antenna at 9.62 GHz.

figure
pattern(ant,9.62e9)

References

[1] Jadhav, Rohini.P, Vinothkurnar Javnrakash Dongre, Arunkumar Heddallikar. "Design of X-Band Conical Horn Antenna Using Coaxial Feed and Improved Design Technique for Bandwidth Enhancement". In International Conference on Computing, Communication, Control, and Automation (ICCUBEA), 1-6. Pune, India: ICCUBEA 2017.