# measuredAntenna

Use measured pattern data as exciter for backing structures

Since R2023a

## Description

The measuredAntenna object lets you perform port and field analysis on the measured field data of an antenna or array. You can import measured field data from a .txt file, .csv file, or .xlsx file to the MATLAB® workspace and assign it to the relevant properties of this object. The field data includes Cartesian electric and embedded electric field components in V/m at the observation points, spherical coordinates of the observation points, the phase center, number of excitation ports, measurement frequencies, and S-parameters. The measuredAntenna object also lets you replace the physical exciter of the curved reflector antennas from the antenna catalog with measured field data of the exciter and perform fundamental analysis on the reflector antenna using the Physical Optics solver.

## Creation

### Description

example

m = measuredAntenna creates an antenna field data object with the x, y, and z-components of the electric field being 0.1 V/m across the observed direction.

example

m = measuredAntenna(Name=Value) creates a measured antenna object, 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.

## Properties

expand all

Cartesian components of the electric field in V/m at observation points, specified as a P-by-3-by-F matrix. P represents the number of observation points and components are specified in [X Y Z] order. The default value is [0.1 0.1 0.1] V/m at a single observation point. F represents the number of frequencies over which the electric field is measured.

Example: E(:,:,1) = [0.5 0.3 0.7]

Example: E(1,:,:) = [0.1 0.1 0.1; 0.2 0.3 0.15;...0.5 0.45 0.35]

Data Types: double
Complex Number Support: Yes

Spherical coordinates of the observation points, specified as a P-by-3 matrix. P represents the number of observation points and the coordinates are specified as [Azimuth(degree) Elevation(degree) Radius(meter)]. The default value is a single observation point at [0 90 100].

Example: [30 60 200]

Example: [0 90 100; ...; 359 359 100]

Data Types: double

Cartesian coordinates of the phase center of the measured antenna in meter, specified as a 1-by-3 vector in [X Y Z] order. The default phase center is at [0 0 0.075]. Phase center is defined as a point in space from which, when emitted, the far-field phase fronts remain spherical in a certain angular area of interest. PhaseCenter denotes the average phase center of the incident electric field, E.

Example: [0 1 1]

Data Types: double

Number of excitation ports in the measured antenna or array, specified as a positive scalar integer. Number of antenna ports specified in this property must be equal to the number of antenna ports in EmbeddedE property.

Example: 2

Data Types: double

Frequencies at which the electric field of the antenna or array was measured, specified as a scalar for a single frequency or a F-by-1 vector for multiple frequencies, where F is the number of frequencies.

Example: 1e9

Example: [1e9 1.25e9 1.5e9]

Data Types: double

Coordinate system for the measured field data, specified as a string amongst:

• rectangular - Cartesian coordinates, where the points are specified as [x y z].

• polar - Spherical coordinates, where the points are specified as [azimuth elevation radial].

Example: "polar"

Data Types: string

Azimuth angles used to measure electric field, specified as a scalar or A-by-1 vector in degrees, where A is the number of azimuth angles.

Example: [0:5:90]

Data Types: double

Elevation angles used to measure electric field, specified as a scalar or E-by-1 vector in degrees, where E is the number of elevation angles.

Example: [0:5:90]

Data Types: double

S-parameters for all excitation ports at each frequency, specified as a sparameters object.

Example: sparameters("sample.s2p")

Example: sparameters(dipole,70e6,50)

Example: sparameters(linearArray,140e6)

Data Types: double

Cartesian components (P-by-3) of embedded electric field magnitude in V/m when the FieldCoordinate is "rectangular", for each port (N) at each frequency (F) at each observation point in the Direction property, specified as a 4-D array. Number of points is defined by P.

When the FieldCoordinate is "polar", the three columns in P-by-3 matrix represent azimuth angle, elevation angle, and radial magnitude. Set NumPorts value greater than 1 to enable this property.

Example: Let EmbeddedE = emb in a rectangular coordinate system. To access the electric field data for a single port at a single frequency, use emb(:,:,1,1).

Data Types: double
Complex Number Support: Yes

Impedance to terminate other ports except the excitation port while computing the embedded pattern, specified as a real scalar. Set NumPorts value greater than 1 to enable this property.

Example: 75

Data Types: double

Excitation amplitude of array elements in Volts, specified as either a positive scalar for uniform amplitude or a positive vector of size 1-by-NumPorts for non-uniform amplitude across the individual elements.

Example: 2

Example: [2 4]

Data Types: double

Phase shift of array elements in degrees, specified as either a positive scalar for uniform phase shift or a positive vector of size 1-by-NumPorts for non-uniform phase shift across the individual elements. PhaseShift values correspond to the respective excitation voltages of the individual array elements.

Example: 45

Example: [45 -45]

Data Types: double

Option to calculate the total electric field from embedded field data, specified as either false or 0 for disabled or true or 1 for enabled. By default, this option is disabled. When this option is set to true or 1, the EHfields and pattern use the calculated total electric field in their results.

Example: true

Data Types: logical

## Object Functions

 EHfields Electric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays pattern Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array sparameters Calculate S-parameters for antennas and antenna arrays

## Examples

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This example shows how to use the measured electric field data of a dipole antenna to excite a parabolic reflector structure. The example uses EHfields function to generate the electric field data. You can import the electric field data of any external antenna into the measuredAntenna object. The electric field magnitude is expressed in V/m and coordinates are expressed in meters and degrees.

Create Dipole antenna, save field data and plot electric field

Design a dipole antenna operating at 10 GHz. Save the complex E-field data of this dipole antenna in a variable.

freq = 10e9;
ant = design(dipole(Tilt=90,TiltAxis=[0 1 0]),freq);
E = EHfields(ant,freq)
E = 3×441 complex

12.2640 +50.7170i  10.9976 +50.0787i   7.3008 +48.1050i   1.4768 +44.6404i  -5.9848 +39.4954i -14.4352 +32.5521i -23.1070 +23.9215i -31.1661 +14.1665i -37.7697 + 4.5675i -42.1368 - 2.7839i -43.6701 - 5.5885i -42.1368 - 2.7839i -37.7697 + 4.5675i -31.1661 +14.1665i -23.1070 +23.9215i -14.4352 +32.5521i  -5.9848 +39.4954i   1.4768 +44.6404i   7.3008 +48.1050i  10.9976 +50.0787i  12.2640 +50.7170i  12.2640 +50.7170i  11.1198 +50.1403i   7.7794 +48.3683i   2.5221 +45.2930i  -4.2021 +40.7980i -11.7984 +34.8525i -19.5659 +27.6430i -26.7481 +19.7338i -32.5931 +12.2089i -36.4289 + 6.6286i -37.7683 + 4.5432i -36.4289 + 6.6286i -32.5931 +12.2089i -26.7481 +19.7338i -19.5659 +27.6430i -11.7984 +34.8525i  -4.2021 +40.7980i   2.5221 +45.2930i   7.7794 +48.3683i  11.1198 +50.1403i  12.2640 +50.7170i  12.2640 +50.7170i  11.4376 +50.3011i   9.0261 +49.0437i   5.2409 +46.9257i   0.4204 +43.9546i  -4.9931 +40.2179i -10.4858 +35.9436i -15.5155 +31.5474i
-0.0032 - 0.0037i  -0.0066 + 0.0011i  -0.0100 + 0.0056i  -0.0134 + 0.0095i  -0.0168 + 0.0127i  -0.0203 + 0.0148i  -0.0236 + 0.0161i  -0.0266 + 0.0165i  -0.0289 + 0.0165i  -0.0304 + 0.0164i  -0.0310 + 0.0164i  -0.0304 + 0.0164i  -0.0289 + 0.0165i  -0.0266 + 0.0165i  -0.0236 + 0.0161i  -0.0203 + 0.0148i  -0.0168 + 0.0127i  -0.0134 + 0.0095i  -0.0100 + 0.0056i  -0.0066 + 0.0011i  -0.0032 - 0.0037i  -0.0032 - 0.0037i  -0.3429 - 0.2264i  -1.3285 - 0.9205i  -2.8808 - 2.1296i  -4.8716 - 3.9044i  -7.1303 - 6.2680i  -9.4541 - 9.1639i -11.6197 -12.3828i -13.3983 -15.4892i -14.5759 -17.8215i -14.9893 -18.6994i -14.5759 -17.8215i -13.3983 -15.4892i -11.6197 -12.3828i  -9.4541 - 9.1639i  -7.1303 - 6.2680i  -4.8716 - 3.9044i  -2.8808 - 2.1296i  -1.3285 - 0.9205i  -0.3429 - 0.2264i  -0.0032 - 0.0037i  -0.0032 - 0.0037i  -0.5501 - 0.3661i  -2.1389 - 1.4703i  -4.6339 - 3.3339i  -7.8169 - 5.9536i -11.4009 - 9.2597i -15.0500 -13.0609i -18.4047 -16.9958i
-0.0000 - 0.0001i  -7.2283 - 4.8904i -13.8197 - 9.7535i -19.1797 -14.4759i -22.7993 -18.7804i -24.2979 -22.1691i -23.4631 -23.8999i -20.2802 -23.0396i -14.9568 -18.7036i  -7.9518 -10.6388i   0.0000 + 0.0000i   7.9518 +10.6388i  14.9568 +18.7036i  20.2802 +23.0396i  23.4631 +23.8999i  24.2979 +22.1691i  22.7993 +18.7804i  19.1797 +14.4759i  13.8197 + 9.7535i   7.2283 + 4.8904i   0.0000 + 0.0001i  -0.0000 - 0.0001i  -6.8732 - 4.6440i -13.1346 - 9.2204i -18.2140 -13.5840i -21.6258 -17.4461i -23.0108 -20.3326i -22.1744 -21.5854i -19.1172 -20.4476i -14.0588 -16.3064i  -7.4559 - 9.1444i   0.0000 + 0.0000i   7.4559 + 9.1444i  14.0588 +16.3064i  19.1172 +20.4476i  22.1744 +21.5854i  23.0108 +20.3326i  21.6258 +17.4461i  18.2140 +13.5840i  13.1346 + 9.2204i   6.8732 + 4.6440i   0.0000 + 0.0001i  -0.0000 - 0.0001i  -5.8441 - 3.9346i -11.1536 - 7.7197i -15.4340 -11.1572i -18.2708 -13.9663i -19.3675 -15.7763i -18.5787 -16.1634i -15.9355 -14.7479i

Plot the electric field vectors of this dipole antenna.

fig = figure;
EHfields(ant,freq,ViewField="E");

Extract coordinates of electric field points and pass field data to measuredAntenna

Extract the Cartesian coordinates of direction vectors from the electric field plot using quiver. Convert these Cartesian coordinates into spherical coordinates using cart2sph function.

quH = fig.Children(4).Children;
pts = [quH.XData;quH.YData;quH.ZData];

Create a measuredAntenna object and pass the electric field data (in V/m.), spherical coordinates of the electric field points, and the phase center of the this field to the respective properties of the measuredAntenna object.

ms = measuredAntenna;
ms.E = E';
ms.Direction = dir;
lambda = 3e8/freq;
f = 5 * lambda;
ms.PhaseCenter = [0 0 f];

Create parabolic reflector antenna with measuredAntenna as exciter

Create a parabolic reflector antenna with the measuredAntenna data as Exciter. Plot the radiation pattern of this antenna at 10 GHz.

back = reflectorParabolic;
back.Exciter = ms;
figure;
pattern(back,10e9)

This example shows how to import and analyze the measured pattern data of a linear array.

Import Measured Pattern Data

Define the frequency range of the data and number of antenna elements in the array. Import the data from a text file using readmatrix function.

The text file contains measured field data for a linear array of dipoles at 3 frequencies 1.6GHz, 2GHz, and 2.4GHz.

fRange = [1.6e9 2e9 2.4e9];
numAnt = 2;
patternData
patternData = 2701×30 complex
102 ×

0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.8000 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.7500 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.7000 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.6500 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.6000 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.5500 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.5000 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.4500 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.4000 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i  -1.3500 + 0.0000i   1.8000 + 0.0000i   0.1500 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 - 0.0000i
⋮

Extract the field data, direction data, and embedded field data from the imported data. Further, extract azimuth and elevation data from the direction data.

% E-field data
eField(:,:,1) = patternData(:,1:3);
eField(:,:,2) = patternData(:,4:6);
eField(:,:,3) = patternData(:,7:9);

% Direction, azimuth, and elevation data
dir = patternData(:,10:12);
az = dir(1:73,1);
el = dir(1:73:end,2);

% Embedded E-field data
embE(:,:,1,1) = patternData(:,13:15);
embE(:,:,2,1) = patternData(:,16:18);
embE(:,:,1,2) = patternData(:,19:21);
embE(:,:,2,2) = patternData(:,22:24);
embE(:,:,1,3) = patternData(:,25:27);
embE(:,:,2,3) = patternData(:,28:30);

Import and extract S-parameters data from Touchstone files.

% Import S-parameters data
sParamData1 = sparameters("Parameters_1.6ghz.s2p");
sParamData2 = sparameters("Parameters_2ghz.s2p");
sParamData3 = sparameters("Parameters_2.4ghz.s2p");

% Extract S-parameters data
sParam(:,:,1) = sParamData1.Parameters;
sParam(:,:,2) = sParamData2.Parameters;
sParam(:,:,3) = sParamData3.Parameters;
sParamFreq(:,1) = sParamData1.Frequencies;
sParamFreq(:,2) = sParamData2.Frequencies;
sParamFreq(:,3) = sParamData3.Frequencies;
sParam
sParam =
sParam(:,:,1) =

0.6991 - 0.5140i   0.0523 + 0.0366i
0.0523 + 0.0366i   0.6991 - 0.5140i

sParam(:,:,2) =

0.2076 - 0.0674i  -0.0918 - 0.1830i
-0.0918 - 0.1830i   0.2076 - 0.0674i

sParam(:,:,3) =

0.6581 + 0.2567i  -0.0490 + 0.0871i
-0.0490 + 0.0871i   0.6581 + 0.2567i

sParamFreq
sParamFreq = 1×3
109 ×

1.6000    2.0000    2.4000

s = sparameters(sParam,sParamFreq);

Assign Data to measuredAntenna

Assign the extracted data to a measuredAntenna object.

mesAnt = measuredAntenna(E=eField, Direction=dir, NumPorts=numAnt,...
Azimuth=az, Elevation=el, FieldCoordinate="polar",...
EmbeddedE=embE, FieldFrequency=fRange, Sparameters=s)
mesAnt =
measuredAntenna with properties:

E: [2701x3x3 double]
Direction: [2701x3 double]
PhaseCenter: [0 0 0.0750]
NumPorts: 2
FieldFrequency: [3x1 double]
FieldCoordinate: "polar"
Azimuth: [-180 -175 -170 -165 -160 -155 -150 -145 -140 -135 -130 -125 -120 -115 -110 -105 -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 ... ] (1x73 double)
Elevation: [180 175 170 165 160 155 150 145 140 135 130 125 120 115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0]
Sparameters: [1x1 sparameters]
AmplitudeTaper: 1
PhaseShift: 0
EmbeddedE: [2701x3x2x3 double]
TerminationImpedance: 50
CalculateTotalField: 0

Visualize Measured Pattern Data

Plot the radiation pattern and electric field for this measuredAntenna at 2GHz, while plot S-parameters over the entire frequency range.

pattern(mesAnt,fRange(2),Type="efield")

EHfields(mesAnt,fRange(2))

sp = sparameters(mesAnt,fRange);
rfplot(sp)

## Version History

Introduced in R2023a

expand all