BN43-202 5T

S11

Through S11 VSWR and S21 dB

Through S11 VSWR and Parallel Inductance and S21 dB

SimSmith Model

SimSmith compatible Fair-Rite Complex Permeability files in SimSmith Groups.io Files section
SS A1.mui = Initial Permeability, μ_i
SS A1.Hi = Inductance at Initial Permeability, using A_L value
SS A1.file = Fair-Rite Complex Permeability File, Example, 43-Material-Fair-Rite.csv

Ferrite Model Text for Cut and Paste

//Ferrite $data=file[]; // Fair-Rite File mui;Hi; $mup = $data.R; $mupp = $data.X; Ls = Hi * ($mup/mui); $Xs = 2*Pi * G.MHz * 1M * Ls; $Q = $mup / $mupp; Rs = $Xs / $Q; Rp = ($Q^2 + 1) * Rs;

Ferrite Model	Text for Cut and Paste
	//Ferrite $data=file[]; // Fair-Rite File mui;Hi; $mup = $data.R; $mupp = $data.X; Ls = Hi * ($mup/mui); $Xs = 2Pi G.MHz * 1M * Ls; $Q = $mup / $mupp; Rs = $Xs / $Q; Rp = ($Q^2 + 1) * Rs;

One Turn Inductance

Using SimSmith Ferrite Model
Match Fair-Rite Typical Impedance (Ω) at 25MHz = 123
One Turn |Z| match = 3.13uH
Five Turn Inductance = 3.13 * 25 = 78uH

Complex Permeability

Plotting Ferrite Complex Permeability

S21 Adapter details
FT37-43 10T μ' at 100kHz computation using:
L_o = 0.0004606 * Log10(OD / ID) * Ht * Turns²
10T L_o = 0.0458uH
10T L = 40.17uH
μ' = 40.17 / 0.0458 ~= 880
SimSmith Lo below adjusted for mup ~= 880 at 100kHz
Files 43-Material-Fair-Rite.csv bn43-202-1t-thru.s1p FT37-43-x5-s21.s1p

D1 and D2 Text
//Fair-Rite $data=file[]; // Fair-Rite File mup = $data.R; $mupp = $data.X; Plot("F-Rmup",mup,y2); Plot("F-Rmupp",$mupp,y2);

//BN43-202 1T $data=file[]; // S11 File Lo; $Rs = $data.R; $Xs = $data.X; Ls = $Xs/(2*Pi * G.MHz * 1M); mup = Ls / Lo; $Q = $Xs / $Rs; $upp = mup / $Q; Plot("BN1Tmup",mup,y2); Plot("BN1Tmupp",$upp,y2);