dipoleCrossed

Crossed dipole or turnstile antenna

Description

The dipoleCrossed object creates a turnstile antenna. By default, the turnstile antenna is center-fed and is on the Y-Z plane. This antenna operates at 6 GHz. You can also create a turnstile antenna using the following antenna elements: bowtieTriangular, bowtieRounded, and dipoleBlade.

Creation

Description

example

ant = dipoleCrossed creates a center-fed turnstile antenna operating at 6 GHz.

ant = dipoleCrossed(Name,Value) sets properties using one or more name-value pairs. For example, ant = dipoleCrossed('Element',dipoleBlade) creates a turnstile antenna using a blade dipole antenna.

Output Arguments

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Turnstile antenna, returned as a dipoleCrossed object.

Properties

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Antenna element to create a turnstile antenna, specified as an antenna object. You can also use the following antenna objects: bowtieTriangular, bowtieRounded, and dipoleBlade.

Example: 'Element',dipoleBlade

Example: ant.Element = dipoleBlade

Data Types: char | string

Angles made by the antenna element arms with respect to the X-Y plane, specified as a two-element signed vector.

Example: 'ArmElevation',[50 -60]

Example: ant.ArmElevation = [50 -60]

Data Types: double

Magnitude of voltage applied to the feeds, specified as a two-element vector with each element in volts.

Example: 'FeedVoltage',[2 2]

Example: ant.FeedVoltage = [2 2]

Data Types: double

Phase shift applied to the voltage at the feeds, specified as a two-element vector with each element in degrees.

Example: 'FeedPhase',[0 50]

Example: ant.FeedPhase = [0 50]

Data Types: double

Tilt angle of the antenna, specified as a scalar or vector in degrees.

Example: 'Tilt',90

Example: ant.Tilt = [90 90 0]

Data Types: double

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

Data Types: double

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.

Example: 'TiltAxis',[0 1 0]

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

Example: ant.TiltAxis = 'Z'

Object Functions

showDisplay antenna or array structure; Display shape as filled patch
axialRatioAxial ratio of antenna
beamwidthBeamwidth of antenna
chargeCharge distribution on metal or dielectric antenna or array surface
currentCurrent distribution on metal or dielectric antenna or array surface
designDesign prototype antenna or arrays for resonance at specified frequency
EHfieldsElectric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays
impedanceInput impedance of antenna; scan impedance of array
meshMesh properties of metal or dielectric antenna or array structure
meshconfigChange mesh mode of antenna structure
patternRadiation pattern and phase of antenna or array; Embedded pattern of antenna element in array
patternAzimuthAzimuth pattern of antenna or array
patternElevationElevation pattern of antenna or array
returnLossReturn loss of antenna; scan return loss of array
sparametersS-parameter object
vswrVoltage standing wave ratio of antenna

Examples

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Create and view a crossed dipole antenna with default property values.

ant = dipoleCrossed
ant = 
  dipoleCrossed with properties:

         Element: [1x1 dipole]
    ArmElevation: [45 -45]
     FeedVoltage: [1 1]
       FeedPhase: [0 90]
            Tilt: 0
        TiltAxis: [1 0 0]

show(ant)

Introduced in R2019a