Transverse impedance of Ceramic collimator.
Comparison of HFSS versus GdfidLA.Grudiev
07.05.08
GdfidL setup
Z
Lc
PML PMLPerfect ConductorCollimator: εr, σ Z
Lc
PML PMLPerfect Conductor
Collimator: εr, σ
2b
d
Setup 1: PML b.c.infinitely long setup
Setup 2: Short Circuit b.c. finite length setup
Dependence on the Lc. εr=5, σ=0Setup1: PMLBC
Setup2: SCBC
Numerical effect
f[MHz]
f[MHz]
Dependence on the mesh. Lc=1m, εr=5, σ=0Setup1: PMLBC
Setup2: SCBCf[MHz]
f[MHz]
HFSS setup. Infinitely long setup
From V. Vaccaro (1994)
2
22
0
0
000
000
0
000
0
1
1
lt
R
RDl
R
D
cZZ
k
kkjZZ
C
jRLZ
LCL
Rjk
LCL
Rjk
b=2mmd=10mm
L0
Δ/2=1mm
Variation of σ=1 - 10-6, εr=1 , Lc=1m, d=10mm
Very good agreement between HFSS and GdfidL
f[MHz]
Variation of σ=1 - 106, εr=1, Lc=1m, d=10mm
No agreement between HFSS and GdfidL for σ > 10. GdfidL mesh is too bad ?
f[MHz]
Variation of εr=2-20, σ=0, d=10mm
Imaginary part of the transverse impedance
f[MHz]
Variation of d=1-20mm, σ=0, εr=5. HFSS setup
f[MHz]
Variation of d=1-20mm, σ=1, εr=1. HFSS setup
f[MHz] f[MHz]
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