Table of Contents
A complete example for S3P computation
ModelInfo: {
File: cell.ncdf
BoundaryCondition: {
Magnetic: 1 3 4
Impedance: 6 //Impedance boundary condition
Waveguide: 7 8 //the ports where waveguide can be loaded
}
SurfaceMaterial: {
ReferenceNumber: 6 //surface material property
Sigma: 5.8e7
}
}
Port : {
ReferenceNumber: 7
Origin: 0.0, 0.04105, 0.0
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 0.0, -1.0
ESolver: {
Type: Analytic
Mode: {
WaveguideType: Rectangular
ModeType: TE, 1, 0
A: 0.028499 //larger dimension
B: 0.00895 //smaller dimension
}
}
}
Port : {
ReferenceNumber: 8
Origin: 0.0, -0.04105, 0.0
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 0.0, -1.0
ESolver: {
Type: Analytic
Mode: {
WaveguideType: Rectangular
ModeType: TE, 1, 0
A: 0.028499 //larger dimension
B: 0.00895 //smaller dimension
}
}
}
FrequencyScan: { //enable frequency scan of S parameter
Start: 9.33e+9
End: 9.48e+9
Interval: 0.01e+9
}
WaveguideFrequency: 9.4e+9 //if FrequencyScan container does not exist, compute S parameter at this frequency
PostProcess: {
Toggle: off //switch for postprocess
Port Number: 1 //input port
ModeFile: coupler.portMode //the mode file prefix for field distribution
}
A complete example with impedance boundary condition
ModelInfo: {
File: cell.ncdf
BoundaryCondition: {
Magnetic: 1 3 4
Impedance: 6
Waveguide: 7 8
}
SurfaceMaterial: {
ReferenceNumber: 6
Sigma: 5.8e7
}
}
Port : {
Reference number: 7
Origin: 0.0, 0.04105, 0.0
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 0.0, -1.0
ESolver: {
Type: Analytic
Mode: {
Waveguide type: Rectangular
Mode type: TE, 1, 0
A: 0.028499
B: 0.00895
}
}
}
Port : {
Reference number: 8
Origin: 0.0, -0.04105, 0.0
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 0.0, 1.0
ESolver: {
Type: Analytic
Mode: {
Waveguide type: Rectangular
Mode type: TE, 1, 0
A: 0.028499
B: 0.00895
}
}
}
FiniteElement: {
Order: 2
CurvedSurfaces: on
}
FrequencyScan: {
Start: 9.33e+9
End: 9.48e+9
Interval: 0.01e+9
}
PostProcess: {
Toggle: off
Port Number: 0 //input port
ModeFile: field
}
VerifyLinearSolver: yes
LinearSolver: {
Solver: MUMPS
}
Specify lossy materials
ModelInfo: {
File: tapereda.ncdf
BoundaryCondition: {
Magnetic: 1
Electric: 2
Exterior: 6
Waveguide: 7
}
Material : {
Attribute: 1 //block 1 is vacuum
Epsilon: 1.0
Mu: 1.0
}
Material : {
Attribute: 2 //block 2 is lossy (cubit block)
Epsilon: 3.0
Mu: 1.0
EpsilonImag: -5.4 //lossy material
}
}
A complete example with an absorbing boundary condition
For example, we can use ABC to approximate the case that there is no metal enclosure.
ModelInfo: {
File: pb.ncdf
BoundaryCondition: {
Waveguide: 3
Magnetic: 1 2
Electric: 4
Exterior: 6
Absorbing: 5 //the surface 5 is the outer boundary of the computational domain.
}
}
FiniteElement: {
Order: 2
CurvedSurfaces: on
}
WaveguideFrequency: 6.77585e7
PostProcess: {
Toggle: on
ModeFile: o
}
//reflection coefficient from MAFIA is 0.5115. we computed it as 0.5105.
Port: {
ReferenceNumber: 3
Origin: 0.0, 0.0, -1.0
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 1.0, 0.0
ESolver: {
Type: Analytic
Mode:{
WaveguideType: Circular
Mode type: TM 0 1
A: 2
}
}
}
Port: { //just load two modes in the same port to make S3P happy.
ReferenceNumber: 3
Origin: 0.0, 0.0, -1.0
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 1.0, 0.0
ESolver: {
Type: Analytic
Mode:{
WaveguideType: Circular
ModeType: TE 0 1
A: 2
}
}
}
Use interpolative port mode
If one has waveguide with shape that does not have analytical solution, one can compute the numerical solution using other programs and used in S3P. The following in the input for an interpolative Port mode.
Port: {
Reference number: 1
Origin: 0.0, 0.0, -0.25
XDirection: 1.0, 0.0, 0.0
YDirection: 0.0, 1.0, 0.0
ESolver: {
Type: Interpolative
Mode:{
ExFile: ex0.prn //the file that stores Ex file on a grid
EyFile: ey0.prn //Ey field
BxFile: bx0.prn //Bx field
ByFile: by0.prn //By field
}
}
}
The following is an excerpt of the ex0.prn
% ix iy x y Ex 1 1 4.9541509E-03 0.0000000E+00 1.0000000E+00 2 1 1.4862453E-02 0.0000000E+00 9.9983907E-01 3 1 2.4770755E-02 0.0000000E+00 9.9951762E-01 4 1 3.4679055E-02 0.0000000E+00 9.9903518E-01 5 1 4.4587359E-02 0.0000000E+00 9.9839246E-01 6 1 5.4495662E-02 0.0000000E+00 9.9758929E-01 7 1 6.4403966E-02 0.0000000E+00 9.9662626E-01 8 1 7.4312270E-02 0.0000000E+00 9.9550349E-01 9 1 8.4220573E-02 0.0000000E+00 9.9422133E-01 10 1 9.4128877E-02 0.0000000E+00 9.9278009E-01 11 1 1.0403718E-01 0.0000000E+00 9.9118054E-01 12 1 1.1394548E-01 0.0000000E+00 9.8942298E-01 13 1 1.2385379E-01 0.0000000E+00 9.8750800E-01 14 1 1.3376209E-01 0.0000000E+00 9.8543614E-01 15 1 1.4367038E-01 0.0000000E+00 9.8320812E-01 16 1 1.5357870E-01 0.0000000E+00 9.8082447E-01 17 1 1.6348699E-01 0.0000000E+00 9.7828639E-01 18 1 1.7339531E-01 0.0000000E+00 9.7559416E-01 19 1 1.8330359E-01 0.0000000E+00 9.7274888E-01 20 1 1.9321191E-01 0.0000000E+00 9.6975166E-01 21 1 2.0312020E-01 0.0000000E+00 9.6660298E-01 22 1 2.1302852E-01 0.0000000E+00 9.6330404E-01 23 1 2.2293681E-01 0.0000000E+00 9.5985591E-01 24 1 2.3284513E-01 0.0000000E+00 9.5625961E-01 25 1 2.4275342E-01 0.0000000E+00 9.5251644E-01 26 1 2.5266171E-01 0.0000000E+00 9.4862741E-01 27 1 2.6257002E-01 0.0000000E+00 9.4459367E-01 28 1 2.7247828E-01 0.0000000E+00 9.4041634E-01 29 1 2.8238660E-01 0.0000000E+00 9.3609643E-01 30 1 2.9235250E-01 0.0000000E+00 9.3160993E-01 31 1 3.0237597E-01 0.0000000E+00 9.2695469E-01 32 1 3.1239951E-01 0.0000000E+00 9.2215794E-01 33 1 3.2242298E-01 0.0000000E+00 9.1722095E-01 34 1 3.3244652E-01 0.0000000E+00 9.1214532E-01 35 1 3.4246999E-01 0.0000000E+00 9.0693265E-01 36 1 3.5249352E-01 0.0000000E+00 9.0158427E-01 37 1 3.6251700E-01 0.0000000E+00 8.9610177E-01 38 1 3.7254053E-01 0.0000000E+00 8.9048654E-01 39 1 3.8256401E-01 0.0000000E+00 8.8474029E-01 40 1 3.9258754E-01 0.0000000E+00 8.7886447E-01 41 1 4.0261102E-01 0.0000000E+00 8.7286055E-01 42 1 4.1263455E-01 0.0000000E+00 8.6672992E-01 43 1 4.2265803E-01 0.0000000E+00 8.6047405E-01 44 1 4.3268156E-01 0.0000000E+00 8.5409439E-01 45 1 4.4270504E-01 0.0000000E+00 8.4759194E-01 46 1 4.5272857E-01 0.0000000E+00 8.4096813E-01 47 1 4.6275204E-01 0.0000000E+00 8.3422428E-01 48 1 4.7277558E-01 0.0000000E+00 8.2736099E-01 49 1 4.8279905E-01 0.0000000E+00 8.2037938E-01 50 1 4.9282259E-01 0.0000000E+00 8.1327999E-01 51 1 5.0284612E-01 0.0000000E+00 8.0606312E-01 52 1 5.1286960E-01 0.0000000E+00 7.9872894E-01 53 1 5.2289319E-01 0.0000000E+00 7.9127711E-01 54 1 5.3291667E-01 0.0000000E+00 7.8370643E-01 55 1 5.4294026E-01 0.0000000E+00 7.7601600E-01 56 1 5.5296373E-01 0.0000000E+00 7.6820403E-01 57 1 5.6298733E-01 0.0000000E+00 7.6026773E-01 58 1 5.7301080E-01 0.0000000E+00 7.5220412E-01 59 1 5.8303440E-01 0.0000000E+00 7.4400985E-01 60 1 5.9305787E-01 0.0000000E+00 7.3568153E-01 61 1 6.0308146E-01 0.0000000E+00 7.2721678E-01 62 1 6.1310494E-01 0.0000000E+00 7.1861577E-01 63 1 6.2312853E-01 0.0000000E+00 7.0988470E-01 64 1 6.3315201E-01 0.0000000E+00 7.0104182E-01 65 1 6.4317560E-01 0.0000000E+00 6.9212669E-01 66 1 6.5319908E-01 0.0000000E+00 6.8321538E-01 67 1 6.6322267E-01 0.0000000E+00 6.7444330E-01 68 1 6.7324615E-01 0.0000000E+00 6.6603261E-01 69 1 6.8326974E-01 0.0000000E+00 6.5832037E-01 70 1 6.9329321E-01 0.0000000E+00 6.5176833E-01 71 1 7.0331681E-01 0.0000000E+00 6.4692903E-01 72 1 7.1334028E-01 0.0000000E+00 6.4433753E-01 1 2 4.9541509E-03 9.9083018E-03 9.9975830E-01 2 2 1.4862453E-02 9.9083018E-03 9.9959749E-01 3 2 2.4770755E-02 9.9083018E-03 9.9927610E-01 4 2 3.4679055E-02 9.9083018E-03 9.9879372E-01 5 2 4.4587359E-02 9.9083018E-03 9.9815118E-01 6 2 5.4495662E-02 9.9083018E-03 9.9734813E-01 7 2 6.4403966E-02 9.9083018E-03 9.9638516E-01 8 2 7.4312270E-02 9.9083018E-03 9.9526256E-01 ... 60 73 5.9305787E-01 7.1835208E-01 0.0000000E+00 61 73 6.0308146E-01 7.1835208E-01 0.0000000E+00 62 73 6.1310494E-01 7.1835208E-01 0.0000000E+00 63 73 6.2312853E-01 7.1835208E-01 0.0000000E+00 64 73 6.3315201E-01 7.1835208E-01 0.0000000E+00 65 73 6.4317560E-01 7.1835208E-01 0.0000000E+00 66 73 6.5319908E-01 7.1835208E-01 0.0000000E+00 67 73 6.6322267E-01 7.1835208E-01 0.0000000E+00 68 73 6.7324615E-01 7.1835208E-01 0.0000000E+00 69 73 6.8326974E-01 7.1835208E-01 0.0000000E+00 70 73 6.9329321E-01 7.1835208E-01 0.0000000E+00 71 73 7.0331681E-01 7.1835208E-01 0.0000000E+00 72 73 7.1334028E-01 7.1835208E-01 0.0000000E+00