Steering a Array Antenna - 32x32

In this tutorial, you will see the examples of beam steering in horizontal direction (changing the direction of the beam) for 32x32 antenna..

Click on Next and Prev button so that some intuitive images forms in your head.

For more theoretical explanation related to these slides, I would suggest you to look into another form of my notes listed below.

• Beam Forming
• Antenna : Phased Array System : Uniform Linear Array (Matlab Toolbox)
• Massive MIMO

Followings are the code that I wrote in Matlab Phased Array System Toolbox  to creates all the plots shown in this page. You may copy these code and play with these codes. Change variables and try yourself until you get your own intuitive understanding.

< Code 1 >

c = 3e8;        % propagation speed

fc = 26e9;      % carrier frequency

lambda = c/fc;  % wavelength

ArrayDim = [32 32];

txarray = phased.URA('Size',ArrayDim,'ElementSpacing',[lambda/2 lambda/2]);

txarray.Element.BackBaffled = true;

steer_ang = [0;0];

stv = phased.SteeringVector('SensorArray',txarray);

w = stv(fc,steer_ang);

hFig = figure(1);

pattern(txarray,fc,[-180:180],[-90:90],...

    'PropagationSpeed',c,...

    'CoordinateSystem','polar',...

    'Type','powerdB',...

    'Weight',w);

set(gcf,'color','w');

axis([-50 50 -50 50 -50 50]);

axis off;

%view(90,15);

view(135,15);

sTitle = sprintf("Antenna Array = %d by %d, Steering Angle=[%d %d]", ...

                     ArrayDim(1),ArrayDim(2),steer_ang(1),steer_ang(2));

title(sTitle);

set(hFig,'Position',[300 100 800 700]);