dipoleCrossed

Crossed dipole or turnstile antenna

Description

The default dipoleCrossed object creates a center-fed turnstile antenna on the yz-plane resonating around 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 on the yz-plane. The default dimensions are chosen for an operating frequency of around 6 GHz.

ant = dipoleCrossed(Name=Value) sets properties using one or more name-value arguments. Name is the property name and Value is the corresponding value. You can specify several name-value arguments in any order as Name1=Value1,...,NameN=ValueN. Properties that you do not specify, retain their default values.

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: dipoleBlade

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 xy-plane, specified as a two-element signed vector in degrees.

Example: [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: [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: [0 50]

Data Types: double

Tilt — Tilt angle of antenna

0 (default) | scalar | vector

Tilt angle of the antenna in degrees, specified as a scalar or vector. For more information, see Rotate Antennas and Arrays.

Example: 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

TiltAxis — Tilt axis of antenna

[1 0 0] (default) | three-element vector | 2-by-3 matrix | "X" | "Y" | "Z"

Tilt axis of the antenna, specified as one of these values:

• 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, specified as a 2-by-3 matrix corresponding to two three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points.

• "x", "y", or "z" to describe a rotation about the x-, y-, or z-axis, respectively.

For more information, see Rotate Antennas and Arrays.

Example: [0 1 0]

Example: [0 0 0;0 1 0]

Example: "Z"

Data Types: double | string

Object Functions

axialRatio	Calculate and plot axial ratio of antenna or array
bandwidth	Calculate and plot absolute bandwidth of antenna or array
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 or create AI-based antenna from antenna catalog objects
efficiency	Calculate and plot radiation efficiency of antenna or array
EHfields	Electric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays
feedCurrent	Calculate current at feed for antenna or array
impedance	Calculate and plot input impedance of antenna or scan impedance of array
info	Display information about antenna, array, or platform
memoryEstimate	Estimate memory required to solve antenna or array mesh
mesh	Mesh properties of metal, dielectric antenna, or array structure
meshconfig	Change meshing mode of antenna, array, custom antenna, custom array, or custom geometry
msiwrite	Write antenna or array analysis data to MSI planet file
optimize	Optimize antenna or array using SADEA optimizer
pattern	Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array
patternAzimuth	Azimuth plane radiation pattern of antenna or array
patternElevation	Elevation plane radiation pattern of antenna or array
peakRadiation	Calculate and mark maximum radiation points of antenna or array on radiation pattern
rcs	Calculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array
returnLoss	Calculate and plot return loss of antenna or scan return loss of array
show	Display antenna, array structures, shapes, or platform
sparameters	Calculate S-parameters for antenna or array
stlwrite	Write mesh information to STL file
vswr	Calculate and plot voltage standing wave ratio (VSWR) of antenna or array element
wireStack	Create single or multi-feed wire 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