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tutorials: update rect waveguide 

Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>
pull/14/head
Thorsten Liebig 2015-12-29 08:07:51 +01:00
parent 2572398482
commit 6a89ca30aa
1 changed files with 19 additions and 15 deletions
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34
matlab/Tutorials/Rect_Waveguide.m
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@ -5,10 +5,10 @@
% http://openems.de/index.php/Tutorial:_Rectangular_Waveguide
%
% Tested with
% - Matlab 2011a / Octave 3.4.3
% - openEMS v0.0.31
% - Octave 4.0.0
% - openEMS v0.0.33
%
% (C) 2010-2013 Thorsten Liebig <thorsten.liebig@gmx.de>
% (C) 2010-2015 Thorsten Liebig <thorsten.liebig@gmx.de>
close all
clear
@ -16,24 +16,28 @@ clc
%% setup the simulation %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
physical_constants;
unit = 1e-3; %drawing unit in mm
unit = 1e-6; %drawing unit in um
% waveguide dimensions
length = 5000;
a = 1000; %waveguide width
b = 1000; %waveguide heigth
% WR42
a = 10700; %waveguide width
b = 4300; %waveguide heigth
length = 50000;
% frequency range of interest
f_start = 300e6;
f_stop = 500e6;
f_start = 20e9;
f_0 = 24e9;
f_stop = 26e9;
lambda0 = c0/f_0/unit;
%waveguide TE-mode definition
TE_mode = 'TE11';
TE_mode = 'TE10';
mesh_res = [10 10 10]; %targeted mesh resolution
%targeted mesh resolution
mesh_res = lambda0./[30 30 30];
%% setup FDTD parameter & excitation function %%%%%%%%%%%%%%%%%%%%%%%%%%%%%
FDTD = InitFDTD();
FDTD = InitFDTD('NrTS',1e4, 'OverSampling', 5);
FDTD = SetGaussExcite(FDTD,0.5*(f_start+f_stop),0.5*(f_stop-f_start));
% boundary conditions
@ -48,7 +52,7 @@ mesh.z = SmoothMeshLines([0 length], mesh_res(3));
CSX = DefineRectGrid(CSX, unit,mesh);
%% apply the waveguide port %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
start=[mesh.x(1) mesh.y(1) mesh.z(8)];
start=[mesh.x(1) mesh.y(1) mesh.z(11)];
stop =[mesh.x(end) mesh.y(end) mesh.z(15)];
[CSX, port{1}] = AddRectWaveGuidePort( CSX, 0, 1, start, stop, 'z', a*unit, b*unit, TE_mode, 1);
@ -57,7 +61,7 @@ stop =[mesh.x(end) mesh.y(end) mesh.z(end-14)];
[CSX, port{2}] = AddRectWaveGuidePort( CSX, 0, 2, start, stop, 'z', a*unit, b*unit, TE_mode);
%% define dump box... %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CSX = AddDump(CSX,'Et','FileType',1,'SubSampling','4,4,4');
CSX = AddDump(CSX,'Et','FileType',1,'SubSampling','2,2,2');
start = [mesh.x(1) mesh.y(1) mesh.z(1)];
stop = [mesh.x(end) mesh.y(end) mesh.z(end)];
CSX = AddBox(CSX,'Et',0 , start,stop);
@ -75,7 +79,7 @@ RunOpenEMS(Sim_Path, Sim_CSX)
%% postproc %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
freq = linspace(f_start,f_stop,201);
port = calcPort( port, Sim_Path, freq);
port = calcPort(port, Sim_Path, freq);
s11 = port{1}.uf.ref./ port{1}.uf.inc;
s21 = port{2}.uf.ref./ port{1}.uf.inc;