dipoleCrossed

Crossed dipole or turnstile antenna

Since R2019a

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

Syntax

ant = dipoleCrossed

ant = dipoleCrossed(Name,Value)

Description

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.

Properties

Element — Antenna element to create turnstile antenna

dipole (default) | antenna object

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

ArmElevation — Angles made by antenna element arms

[45 -45] (default) | two-element signed vector

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

FeedVoltage — Magnitude of voltage applied to feeds

[1 1] (default) | two-element vector

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

FeedPhase — Phase shift applied to voltage at feeds

[0 90] (default) | two-element vector

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 — 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: 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: TiltAxis = 'Z'

Data Types: double

Object Functions

show	Display antenna, array structures or shapes
axialRatio	Axial ratio of antenna
beamwidth	Beamwidth of antenna
charge	Charge distribution on antenna or array surface
current	Current distribution on antenna or array surface
design	Design prototype antenna or arrays for resonance around specified frequency
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, 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

Default Crossed Dipole Antenna

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)

Version History

Introduced in R2019a