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python Tutorial: fix bent patch antenna 

Signed-off-by: Thorsten Liebig <liebig@imst.de>
pull/80/head
Thorsten Liebig 2021-07-08 15:23:47 +02:00
parent 566962c516
commit 0dcbcf7651
1 changed files with 7 additions and 4 deletions
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11
python/Tutorials/Bent_Patch_Antenna.py
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@ -55,7 +55,7 @@ SimBox_rad = 2*100
SimBox_height = 1.5*200 SimBox_height = 1.5*200
### Setup FDTD parameter & excitation function ### Setup FDTD parameter & excitation function
FDTD = openEMS(CoordSystem=1) # init a cylindrical FDTD FDTD = openEMS(CoordSystem=1, EndCriteria=1e-4) # init a cylindrical FDTD
f0 = 2e9 # center frequency f0 = 2e9 # center frequency
fc = 1e9 # 20 dB corner frequency fc = 1e9 # 20 dB corner frequency
FDTD.SetGaussExcite(f0, fc) FDTD.SetGaussExcite(f0, fc)
@ -78,13 +78,15 @@ feed_angle = feed_pos/patch_radius
patch = CSX.AddMetal('patch') # create a perfect electric conductor (PEC) patch = CSX.AddMetal('patch') # create a perfect electric conductor (PEC)
start = [patch_radius+substrate_thickness, -patch_ang_width/2, -patch_length/2 ] start = [patch_radius+substrate_thickness, -patch_ang_width/2, -patch_length/2 ]
stop = [patch_radius+substrate_thickness, patch_ang_width/2, patch_length/2 ] stop = [patch_radius+substrate_thickness, patch_ang_width/2, patch_length/2 ]
CSX.AddBox(patch, priority=10, start=start, stop=stop, edges2grid='all') # add a box-primitive to the metal property 'patch' patch.AddBox(priority=10, start=start, stop=stop) # add a box-primitive to the metal property 'patch'
FDTD.AddEdges2Grid(dirs='all', properties=patch)
# create substrate # create substrate
substrate = CSX.AddMaterial('substrate', epsilon=substrate_epsR, kappa=substrate_kappa ) substrate = CSX.AddMaterial('substrate', epsilon=substrate_epsR, kappa=substrate_kappa )
start = [patch_radius , -substr_ang_width/2, -substrate_length/2] start = [patch_radius , -substr_ang_width/2, -substrate_length/2]
stop = [patch_radius+substrate_thickness, substr_ang_width/2, substrate_length/2] stop = [patch_radius+substrate_thickness, substr_ang_width/2, substrate_length/2]
substrate.AddBox(start=start, stop=stop, edges2grid='all') substrate.AddBox(start=start, stop=stop)
FDTD.AddEdges2Grid(dirs='all', properties=substrate)
# save current density oon the patch # save current density oon the patch
jt_patch = CSX.AddDump('Jt_patch', dump_type=3, file_type=1) jt_patch = CSX.AddDump('Jt_patch', dump_type=3, file_type=1)
@ -96,7 +98,8 @@ jt_patch.AddBox(start=start, stop=stop)
gnd = CSX.AddMetal('gnd') # create a perfect electric conductor (PEC) gnd = CSX.AddMetal('gnd') # create a perfect electric conductor (PEC)
start = [patch_radius, -substr_ang_width/2, -substrate_length/2] start = [patch_radius, -substr_ang_width/2, -substrate_length/2]
stop = [patch_radius, +substr_ang_width/2, +substrate_length/2] stop = [patch_radius, +substr_ang_width/2, +substrate_length/2]
gnd.AddBox(priority=10, start=start, stop=stop, edges2grid='all') gnd.AddBox(priority=10, start=start, stop=stop)
FDTD.AddEdges2Grid(dirs='all', properties=gnd)
# apply the excitation & resist as a current source # apply the excitation & resist as a current source
start = [patch_radius , feed_angle, 0] start = [patch_radius , feed_angle, 0]