Antenna 3D pattern at any giving angle

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Irwin2020 2019-7-3

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https://ww2.mathworks.cn/matlabcentral/answers/470104-antenna-3d-pattern-at-any-giving-angle

评论： Bjorn Gustavsson 2019-7-5

Hello everyone, I have crerated a 3D Antenna Patterns (simulation) , assuming the Ant patterns (radiation) pointing at 90 degree (looking from above), my goal here, is to change the radaition angle from 90 to 15 degree or from 90 to 175 degree (at any giving angle between 15 and 175 using contour or mesh function) . I have tried the camera view and rotation function but non of that a complished my goal , eventually I will put the mesh into for-loop and view it at any giving angle, Pease help me figuer out how to solve this issue.

f= 5.04e9;    %frequncy in GHz
C= 3e8; % Global constant Speed of the light
d=21.5;
G_ant=3;
x= -5:0.01:5;
%%%%%%%%%%%% **************** %%%%%%%%%%%%
  y= sin(x)';
xr=x*pi/180;
yr=y*pi/180;
a=sqrt(xr.^2+yr.^2);
x1= a*f*d/C;
sinc_xA= sinc(x1)+G_ant;
A=sinc_xA.^8;
z= 40*log10(A); %% array radiation pattern in dBs
%3D-Plot 
figure(1)
% [xr,yr] = meshgrid(xr,yr);
mesh(xr,yr,z*4);
view(2)
xlabel('(degrees)');
ylabel('(degrees)');
zlabel('(Direction)');
figure(2)
contour(X,Y,abs(Z));