reflectorCorner

Create corner reflector-backed antenna

Description

Use the default reflectorCorner object to create a corner reflector-backed antenna resonating around 886.16 MHz. By default, the exciter antenna is a dipole. The feed point of the dipole is at the origin.

Creation

Syntax

rc = reflectorCorner

rc = reflectorCorner(Name=Value)

Description

rc = reflectorCorner creates a corner reflector backed dipole antenna with default property values. The default dimensions are chosen for an operating frequency of around 886.16 MHz.

rc = reflectorCorner(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, rc = 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 | custom antenna object | empty array

Exciter antenna or array type, specified as either:

• Antenna object from the catalog (except reflector type, cavity type and platform-installed antennas)

• Array object from the catalog (except conformal and infinite arrays)

• Custom antennas: customAntennaGeometry, customAntennaMesh, customAntenna

• Empty array

To create the reflector backing structure without an exciter, specify this property as an empty array.

Example: horn

Example: linearArray(Element=patchMicrostrip)

Example: customAntenna

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 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
resonantFrequency	Calculate and plot resonant frequency of antenna
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

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