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sectorInvertedAmos

Create inverted Amos sector antenna

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Description

Use thesectorInvertedAmosobject to create an inverted Amos sector antenna consisting of four dipole-like arms. The antenna is fed at the origin of the dipole. The dipole arms are symmetric about the origin. The operating frequency of the antenna is at 2.45 GHz wireless.

Creation

Syntax

amossector = sectorInvertedAmos
amossector = sectorInvertedAmos(Name,Value)

Description

example

amossector = sectorInvertedAmoscreates an inverted Amos sector antenna with four dipole-like arms.

amossector = sectorInvertedAmos(Name,Value)sets properties using one or more name-value pair. For example,amossector = sectorInvertedAmos('ArmWidth',0.2)创建一个反向与偶极子widt阿莫斯部门h of 0.2 m. Enclose each property name in quotes.

Properties

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Length of individual dipole arms, specified as a vector with each element unit in meters.

Example:'ArmLength',[0.0980 0.0810 0.0830 0.0750]

Example:amossector.ArmLength = [0.0980 0.0810 0.0830 0.0750]

Data Types:double

Width of dipole arms, specified as a scalar in meters.

Example:'ArmWidth',0.0025

Example:amossector.ArmWidth = 0.0025

Data Types:double

Notch length, specified as a scalar in meters. For an inverted Amos sector antenna with seven stacked arms, six notches are generated. Notch length is measured along the length of the antennas.

Example:'NotchLength',0.001

Example:amossector.NotchLength = 0.001

Data Types:double

Notch width, specified as a scalar in meters. For an inverted Amos sector antenna with seven stacked arms, six notches are generated. Notch width is measured perpendicular to the length of the antenna.

Example:'NotchWidth',0.00190

Example:amossector.NotchWidth = 0.00190

Data Types:double

Ground plane length, specified as a scalar in meters. By default, ground plane length is measured alongx-axis.

Example:'GroundPlaneLength',0.7500

Example:amossector.GroundPlaneLength = 0.7500

Data Types:double

Ground plane width, specified as a scalar in meters. By default, ground plane width is measured alongy-axis.

Example:'GroundPlaneWidth',0.0500

Example:amossector.GroundPlaneWidth = 0.0500

Data Types:double

Distance between ground plane and antenna element, specified as a scalar in meters.

Example:'Spacing',0.0355

Example:amossector.Spacing = 0.0355

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

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

Example:'Load',lumpedelement.lumpedelementis the object for the load created usinglumpedElement.

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

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.

Note

ThewireStackantenna object only accepts the dot method to change its properties.

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 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, seeRotate Antennas and Arrays.

Example:'TiltAxis',[0 1 0]

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

Example:ant.TiltAxis = 'Z'

Note

ThewireStackantenna 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 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
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 and view an inverted Amos sector antenna.

sectoria = sectorInvertedAmos
sectoria = sectorInvertedAmos with properties: ArmLength: [0.0880 0.0710 0.0730 0.0650] ArmWidth: 0.0040 NotchLength: 0.0238 NotchWidth: 0.0170 GroundPlaneLength: 0.6600 GroundPlaneWidth: 0.0750 Spacing: 0.0355 Conductor: [1x1 metal] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]
show(sectoria)

Figure contains an axes object. The axes object with title sectorInvertedAmos antenna element contains 4 objects of type patch, surface. These objects represent PEC, feed.

Plot Radiation Pattern at 2.4 GHz

pattern(sectoria,2.4e9)

图包含一个坐标轴对象和其他对象of type uicontrol. The axes object contains 4 objects of type patch, surface.

See Also

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Introduced in R2017b

Antenna Toolbox Documentation

金宝app

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Hybrid Beamforming for Massive MIMO Phased Array Systems

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