reflectorCorner

Create corner reflector-backed antenna

Description

Use the reflectorCorner object to create a corner reflector-backed antenna. By default, the exciter antenna is a dipole. The feed point of the dipole is at the origin. The default dimensions are for an operating frequency of 1 GHz.

Creation

Syntax

cornerreflector = reflectorCorner

cornerreflector = reflectorCorner(Name=Value)

Description

cornerreflector = reflectorCorner creates a corner reflector backed dipole antenna for an operating frequency of 1 GHz using default values.

cornerreflector = reflectorCorner(Name=Value) creates a corner reflector antenna, with additional Properties specified by 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 not specified retain their default values.

For example, cornerreflector = reflectorCorner(CornerAngle=45) creates a corner reflector-backed antenna with a corner angle of 45 degrees.

Properties

Exciter — Antenna or array type used as exciter

dipole (default) | antenna object | array object | empty array

Exciter antenna or array type, specified as a single-element antenna object, an array object, or an empty array. Except for reflector and cavity antenna elements, you can use any Antenna Toolbox™ antenna or array element as an exciter. To create the cavity backing structure without the exciter, specify this property as an empty array.

Example: horn

Example: linearArray(Element=patchMicrostrip)

Example: []

Spacing — Distance between exciter and reflector

0.0750 (default) | scalar

Distance between exciter and reflector, specified as a scalar in meters.

Example: 0.0624

Data Types: double

CornerAngle — Angle made by corner reflector

90 (default) | scalar

Angle made by corner reflector, specified as a scalar in degrees.

Example: 60

Data Types: double

GroundPlaneLength — Reflector length along x-axis

0.2000 (default) | scalar

Reflector length along the x-axis, specified as a scalar in meters. By default, ground plane length is measured along the x-axis. You can also set the GroundPlaneLength to zero.

Example: 0.4000

Data Types: double

GroundPlaneWidth — Reflector width along y-axis

0.4000 (default) | scalar

Reflector width along the y-axis, specified as a scalar in meters. By default, ground plane width is measured along the y-axis. You can also set the GroundPlaneWidth to zero.

Example: 0.6000

Data Types: double

Conductor — Type of metal material

"PEC" (default) | metal object

Type of the metal used as a conductor, specified as a metal material object. You can choose any metal from the MetalCatalog or specify a metal of your choice. For more information, see metal. For more information on metal conductor meshing, see Meshing.

Example: metal("Copper")

Load — Lumped elements

[1x1 lumpedElement] (default) | lumped element object

Loads 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, the load is at the origin. For more information, see lumpedElement.

Example: Load=lumpedelement, where, lumpedelement is the object for the load created using lumpedElement.

Example: lumpedElement(Impedance=75)

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
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, 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 Corner Reflector-Backed Antenna and Radiation Pattern

Create and view a corner reflector-backed dipole.

cornerreflector = reflectorCorner

cornerreflector = 
  reflectorCorner with properties:

              Exciter: [1x1 dipole]
    GroundPlaneLength: 0.2000
     GroundPlaneWidth: 0.4000
          CornerAngle: 90
              Spacing: 0.0750
            Conductor: [1x1 metal]
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1x1 lumpedElement]

show(cornerreflector)

Plot the radiation pattern at 1 GHz.

pattern(cornerreflector,1e9)

Create Corner Reflector-Backed Linear Array of Inverted-F Antennas

Create a linear array of inverted-F antennas.

la = linearArray(Element=invertedF,ElementSpacing=0.1);

Create a corner reflector-backed linear array of inverted-F antennas.

ant = reflectorCorner(Exciter=la)

ant = 
  reflectorCorner with properties:

              Exciter: [1x1 linearArray]
    GroundPlaneLength: 0.2000
     GroundPlaneWidth: 0.4000
          CornerAngle: 90
              Spacing: 0.0750
            Conductor: [1x1 metal]
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1x1 lumpedElement]

show(ant)

Create Log-Periodic Antenna with Corner Reflector Backing Structure

Create corner reflector-backed log-periodic antenna.

ant = reflectorCorner(Exciter=lpda)

ant = 
  reflectorCorner with properties:

              Exciter: [1x1 lpda]
    GroundPlaneLength: 0.2000
     GroundPlaneWidth: 0.4000
          CornerAngle: 90
              Spacing: 0.0750
            Conductor: [1x1 metal]
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1x1 lumpedElement]

show(ant)

Version History

Introduced in R2018a