Calculate the magnitude, azimuth, and elevation angles of a dipole's electric field at 75 MHz.

d = dipole;
[efield,az,el] = pattern(d, 75e6,'Type','efield');

Extract the theta and phi angles of the electric field magnitude of the antenna.

phi = az';
theta = (90-el);
MagE = efield';

Plot the 3-D electric field pattern.

patternCustom(MagE,theta,phi);

Calculate the magnitude, azimuth, and elevation angles of a helix's directivity at 2 GHz.

h = helix;
[D,az,el] = pattern(h,2e9);

Extract theta and phi angles of the directivity magnitude.

phi = az';
theta = (90-el);
MagE = D';

Plot 2-D phi slice of the antenna in rectangular coordinates.

figure;
patternCustom(MagE,theta,phi,'CoordinateSystem','rectangular',...
    'Slice','phi','SliceValue',0);

Plot 2-D phi slice of the antenna in polar coordinates.

figure;
patternCustom(MagE, theta, phi,'CoordinateSystem','polar',...
    'Slice','phi','SliceValue',0);

Consider a helix antenna data file in .csv format. This file contains the magnitude of the antenna directivity in phi and theta angles. Read the file .

helixdata = csvread('antennadata_test.csv',1,0);

Use patternCustom to extract the magnitude of directivity, and the phi, and theta angle values. Plot the 3-D polar radiation pattern.

patternCustom(helixdata(:,3),helixdata(:,2),helixdata(:,1));

Use the same data to plot the 3-D rectangular radiation pattern.

figure
patternCustom(helixdata(:,3),helixdata(:,2),helixdata(:,1),...
 'CoordinateSystem','rectangular');