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tutorials: fixes and updates

pull/1/head
Thorsten Liebig 2012-02-29 13:43:04 +01:00
parent c0f8cffa0a
commit 3b1ab95cce
2 changed files with 19 additions and 12 deletions
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4
matlab/Tutorials/CRLH_Extraction.m
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@ -95,8 +95,8 @@ RunOpenEMS( Sim_Path, Sim_CSX );
%% post-processing %% post-processing
close all close all
f = linspace( f_start, f_stop, 1601 ); f = linspace( f_start, f_stop, 1601 );
port{1} = calcPort( portstruct{1}, Sim_Path, f, 'RefPlaneShift', feed_length*unit); port{1} = calcPort( portstruct{1}, Sim_Path, f, 'RefPlaneShift', feed_length);
port{2} = calcPort( portstruct{2}, Sim_Path, f, 'RefPlaneShift', feed_length*unit); port{2} = calcPort( portstruct{2}, Sim_Path, f, 'RefPlaneShift', feed_length);
s11 = port{1}.uf.ref./ port{1}.uf.inc; s11 = port{1}.uf.ref./ port{1}.uf.inc;
s21 = port{2}.uf.ref./ port{1}.uf.inc; s21 = port{2}.uf.ref./ port{1}.uf.inc;

27
matlab/Tutorials/CRLH_LeakyWaveAnt.m
View File

@ -22,6 +22,7 @@ feed_length = 20000;
substrate_thickness = [1524 101 254]; substrate_thickness = [1524 101 254];
substrate_epsr = [3.48 3.48 3.48]; substrate_epsr = [3.48 3.48 3.48];
substrate_tanD = [1 1 1]*1e-3;
N_Cells = 8; %number of CRLH unit cells N_Cells = 8; %number of CRLH unit cells
@ -36,10 +37,10 @@ CRLH.TopSig = sum(substrate_thickness); %top layer height
CRLH.BottomSig = CRLH.TopSig - substrate_thickness(end); %bottom layer height CRLH.BottomSig = CRLH.TopSig - substrate_thickness(end); %bottom layer height
substrate_width = CRLH.LW + 2*CRLH.SL; substrate_width = CRLH.LW + 2*CRLH.SL;
Air_Spacer = 25000; Air_Spacer = 30000;
% frequency range of interest % frequency range of interest
f_start = 0.8e9; f_start = 1e9;
f_stop = 6e9; f_stop = 6e9;
f_rad = (1.9:0.1:4.2)*1e9; f_rad = (1.9:0.1:4.2)*1e9;
@ -47,7 +48,7 @@ f_rad = (1.9:0.1:4.2)*1e9;
Plot_3D_Rad_Pattern = 1; %this may take a long time! > 30min Plot_3D_Rad_Pattern = 1; %this may take a long time! > 30min
%% setup FDTD parameters & excitation function %%%%%%%%%%%%%%%%%%%%%%%%%%%% %% setup FDTD parameters & excitation function %%%%%%%%%%%%%%%%%%%%%%%%%%%%
FDTD = InitFDTD( 20000 ); FDTD = InitFDTD(100000, 1e-3);
FDTD = SetGaussExcite( FDTD, (f_start+f_stop)/2, (f_stop-f_start)/2 ); FDTD = SetGaussExcite( FDTD, (f_start+f_stop)/2, (f_stop-f_start)/2 );
BC = {'PML_8' 'PML_8' 'PML_8' 'PML_8' 'PML_8' 'PML_8'}; BC = {'PML_8' 'PML_8' 'PML_8' 'PML_8' 'PML_8' 'PML_8'};
FDTD = SetBoundaryCond( FDTD, BC ); FDTD = SetBoundaryCond( FDTD, BC );
@ -59,7 +60,7 @@ resolution = c0/(f_stop*sqrt(max(substrate_epsr)))/unit /30; % resolution of lam
mesh.x = [-feed_length-(N_Cells*CRLH.LL)/2-Air_Spacer -feed_length-(N_Cells*CRLH.LL)/2 0 feed_length+(N_Cells*CRLH.LL)/2 feed_length+(N_Cells*CRLH.LL)/2+Air_Spacer]; mesh.x = [-feed_length-(N_Cells*CRLH.LL)/2-Air_Spacer -feed_length-(N_Cells*CRLH.LL)/2 0 feed_length+(N_Cells*CRLH.LL)/2 feed_length+(N_Cells*CRLH.LL)/2+Air_Spacer];
mesh.y = [-Air_Spacer-substrate_width/2 0 Air_Spacer+substrate_width/2]; mesh.y = [-Air_Spacer-substrate_width/2 0 Air_Spacer+substrate_width/2];
substratelines = cumsum(substrate_thickness); substratelines = cumsum(substrate_thickness);
mesh.z = [-0.7*Air_Spacer 0 cumsum(substrate_thickness) linspace(substratelines(end-1),substratelines(end),4) Air_Spacer]; mesh.z = [-0.5*Air_Spacer 0 cumsum(substrate_thickness) linspace(substratelines(end-1),substratelines(end),4) Air_Spacer];
% create the CRLH unit cells (will define additional fixed mesh lines) % create the CRLH unit cells (will define additional fixed mesh lines)
pos_x = -(N_Cells*CRLH.LL)/2 + CRLH.LL/2; pos_x = -(N_Cells*CRLH.LL)/2 + CRLH.LL/2;
@ -78,7 +79,7 @@ CSX = DefineRectGrid( CSX, unit, mesh );
substratelines = [0 substratelines]; substratelines = [0 substratelines];
for n=1:numel(substrate_thickness) for n=1:numel(substrate_thickness)
CSX = AddMaterial( CSX, ['substrate' int2str(n)] ); CSX = AddMaterial( CSX, ['substrate' int2str(n)] );
CSX = SetMaterialProperty( CSX, ['substrate' int2str(n)], 'Epsilon', substrate_epsr(n) ); CSX = SetMaterialProperty( CSX, ['substrate' int2str(n)], 'Epsilon', substrate_epsr(n), 'Kappa', substrate_tanD(n)*substrate_epsr(n)*EPS0*2*pi*3e9 );
start = [-feed_length-(N_Cells*CRLH.LL)/2, -substrate_width/2, substratelines(n)]; start = [-feed_length-(N_Cells*CRLH.LL)/2, -substrate_width/2, substratelines(n)];
stop = [+feed_length+(N_Cells*CRLH.LL)/2, substrate_width/2, substratelines(n+1)]; stop = [+feed_length+(N_Cells*CRLH.LL)/2, substrate_width/2, substratelines(n+1)];
CSX = AddBox( CSX, ['substrate' int2str(n)], 0, start, stop ); CSX = AddBox( CSX, ['substrate' int2str(n)], 0, start, stop );
@ -144,8 +145,7 @@ phi = [0 90];
disp( 'calculating far field at phi=[0 90] deg...' ); disp( 'calculating far field at phi=[0 90] deg...' );
nf2ff = CalcNF2FF(nf2ff, Sim_Path, f_rad, theta*pi/180, phi*pi/180, 1, 'Verbose',1); nf2ff = CalcNF2FF(nf2ff, Sim_Path, f_rad, theta*pi/180, phi*pi/180, 'Verbose',1);
nf2ff = ReadNF2FF(nf2ff);
%% %%
% prepare figures % prepare figures
@ -166,7 +166,7 @@ ylim([-20 10]);
line_styles = {'b-','g:','r-.','c--','m-','y:','k-.'}; line_styles = {'b-','g:','r-.','c--','m-','y:','k-.'};
for n=1:numel(f_rad) for n=1:numel(f_rad)
f_res = f_rad(n) f_res = f_rad(n);
% display power and directivity % display power and directivity
disp( ['frequency: f = ' num2str(f_res/1e9) ' GHz']); disp( ['frequency: f = ' num2str(f_res/1e9) ' GHz']);
@ -187,6 +187,14 @@ for n=1:numel(f_rad)
hold on; hold on;
end end
%%
figure()
plot(f_rad,nf2ff.Dmax,'b-*','Linewidth',2)
grid on
xlabel( 'frequency' );
ylabel( 'directivity (dBi)');
%%
if (Plot_3D_Rad_Pattern==0) if (Plot_3D_Rad_Pattern==0)
return return
end end
@ -196,8 +204,7 @@ phi = 0:3:360;
theta = 0:3:180; theta = 0:3:180;
disp( 'calculating 3D far field pattern...' ); disp( 'calculating 3D far field pattern...' );
nf2ff = CalcNF2FF(nf2ff, Sim_Path, f_rad, theta*pi/180, phi*pi/180, 1, 'Verbose',2); nf2ff = CalcNF2FF(nf2ff, Sim_Path, f_rad, theta*pi/180, phi*pi/180,'Verbose',2, 'Outfile','3D_Pattern.h5');
nf2ff = ReadNF2FF(nf2ff);
%% %%
disp( 'dumping 3D far field pattern to vtk, use Paraview to visualize...' ); disp( 'dumping 3D far field pattern to vtk, use Paraview to visualize...' );