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hornCorrugated

Create rectangular corrugated-horn antenna

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Description

ThehornCorrugatedobject creates a rectangular corrugated-horn antenna with grooves on the inner walls of the flare. These antennas provide spillover reduction and have beam symmetry and a low sidelobe level, so they are widely used as a feed in reflector antennas in broadcasting communications.

Rectangular corrugated horn antenna geometry, default radiation pattern, and impedance plot.

Creation

Syntax

ant = hornCorrugated
ant = hornCorrugated(Name,Value)

Description

example

ant= hornCorrugated创建一个矩形corrugated-horn天线a resonant frequency around 15 GHz.

ant= hornCorrugated(Name,Value)setsPropertiesusing one or more name-value pairs. For example,ant = hornCorrugated('FlareLength', 0.045)creates a rectangular corrugated-horn antenna with the flare length of the horn set to 45 mm.

Properties

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Flare length of the horn, specified as a positive scalar in meters.

Example:'FlareLength',0.35

Data Types:double

Flare width of the horn, specified as a positive scalar in meters.

Example:'FlareWidth',0.2

Data Types:double

Flare height of the horn, specified as a positive scalar in meters.

Example:'FlareHeight',0.15

Data Types:double

Length of the rectangular waveguide, specified as a positive scalar in meters.

Example:'Length',0.09

Data Types:double

Width of the rectangular waveguide, specified as a positive scalar in meters.

Example:'Width',0.05

Data Types:double

Height of the rectangular waveguide, specified as a positive scalar in meters.

Example:'Height',0.0200

Data Types:double

Height of the feed, specified as a positive scalar in meters.

Example:'FeedHeight',0.0050

Data Types:double

Width of the feed, specified as a positive scalar in meters.

Example:'FeedWidth',5e-05

Data Types:double

Signed distance of the feedpoint from the center of the ground plane, specified as a two-element vector in meters.

Example:'FeedOffset',[–0.0070 0.01]

Data Types:double

Distance between two successive corrugations, specified as a positive scalar in meters.

Example:'Pitch',0.0060

Example:ant.Pitch = 0.0090

Data Types:double

Distance of the first corrugation from the waveguide, specified as a positive scalar in meters.

Example:'FirstCorrugatedDistance',0.0360

Example:ant.FirstCorrugatedDistance = 0.0190

Data Types:double

Corrugation width, specified as a positive scalar in meters.

Example:'CorrugateWidth',0.0058

Example:ant.CorrugateWidth = 0.0019

Data Types:double

Corrugation depth, specified as a two-element vector in meters. The first element corresponds to the width along E-plane, and the second element corresponds to the width along the H-plane.

Example:'CorrugateDepth',[0.006 0.0560]

Example:ant.CorrugateDepth = [0.0050 0.0790]

Data Types:double

Type of the metal used as a conductor, specified as a metal material object. You can choose any metal from theMetalCatalogor specify a metal of your choice. For more information, seemetal. For more information on metal conductor meshing, seeMeshing.

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

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

Tilt angle of the antenna, specified as a scalar or vector with each element unit in degrees. For more information, seeRotate 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.

Data Types:double

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 thex-,y-, andz-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.

  • 一个字符串输入描述简单的旋转one of the principal axes, 'x', 'y', or 'z'.

For more information, seeRotate Antennas and Arrays.

Example:'TiltAxis',[0 1 0]

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

Example:ant.TiltAxis = 'Z'

Lumped elements added to the antenna feed, specified as alumpedElementobject. You can add a load anywhere on the surface of the antenna. By default, the load is at the feed. For more information, seelumpedElement.

Example:'Load',lumpedElement.lumpedElementis the object for the load created usinglumpedElement.

Example:ant.Load = lumpedElement('Impedance',75)

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 around 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
numCorrugationsToPitch Calculate pitch for specified corrugations
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
rcs Calculate and plot radar cross section (RCS) of platform, antenna, or array
returnLoss Return loss of antenna; scan return loss of array
sparameters Calculate S-parameter for antenna and antenna array objects
vswr Voltage standing wave ratio of antenna

Examples

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Open Live Script

Create a default rectangular corrugated-horn antenna.

ant = hornCorrugated
ant = hornCorrugated with properties: FlareLength: 0.0428 FlareWidth: 0.0900 FlareHeight: 0.0800 Length: 0.0229 Width: 0.0102 Height: 0.0075 FeedWidth: 8.0000e-05 FeedHeight: 0.0037 FeedOffset: [-0.0020 0] FirstCorrugateDistance: 0.0160 CorrugateDepth: [0.0050 0.0100] CorrugateWidth: 0.0030 Pitch: 0.0060 Conductor: [1x1 metal] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]

View the antenna using theshowfunction.

show(ant)

Figure contains an axes object. The axes object with title hornCorrugated antenna element contains 3 objects of type patch, surface. These objects represent PEC, feed.

情节主要天线的辐射方向图quency 15.28 GHz.

p = PatternPlotOptions('MagnitudeScale',[-15 10]); pattern(ant,15.28e9,'patternOptions',p)

Figure contains an axes object and other objects of type uicontrol. The axes object contains 3 objects of type patch, surface.

References

[1] Encinar, J., and J. Rebollar. “A Hybrid Technique for Analyzing Corrugated and Noncorrugated Rectangular Horns.”IEEE Transactions on Antennas and Propagation, vol. 34, no. 8, Aug. 1986, pp. 961–68.

Version History

Introduced in R2020b

See Also

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