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*diff line on the top layer
' e) z( F0 A# A1 |*diffline.sp : caluclate diff stripline[pcbdiff_top.rlgc]2 U, r# O1 s2 l: K
*created by liliming
0 t$ B3 ^" i X B5 o*****************************************************; k8 S7 J; ^, G. R1 i
* material FR-4 W= S=# h" F. {7 \8 u
* CRISS SECTUIB DUAGRAN AS FIKKIWUBG
6 ?1 P* @" ?, S2 m*//////////----dWidth--- dGap ---dWidth----//////////dThickness
" Z" I) d/ ^+ P2 m# B*////////////////////////////////////////////////////dHeight1
0 n9 X3 G$ H1 W+ a5 C* X*----------------------------------------------------dThickness
: y9 L/ `! K. B" U* v, {& Y$ X******************************************************) D' \6 t t0 l$ i' C
.param dHeight1=8mil! Y2 c0 ?' O( Q$ C' `/ V* T
.param dWidth =5mil" H0 }6 q. R0 d. b6 y% U
.param dGap =9mil
. s+ G) v9 H( r* B.param dThickness=1.2mil5 ^0 n3 V0 H- G+ C: `) [
.param dLength=10000mil( R" m. K2 p/ [9 j, C2 u" r; ~: [
.options probe post. M. s( x) X: }- \
vimpulse in1 gnd pulse (1.8v 0v 0ps 50ps 50ps 450ps 1ns)
) z7 U/ b" f4 o' Fwline in1 in2 gnd out1 out2 gnd fsmodel=dstrip n=2 l=dLength0 N- Y5 L* E. M
.material die dielectric er=4.3 losstangent=0.017
9 |4 n" f5 F9 E3 D, w1 d.material copper metal conductivity=57.6meg
+ r' t. [' T+ `2 o.shape trace rectangle width=dWidth height=dThickness
8 L" d5 r _7 |' g, I4 Z.layerstack stack6 }4 W# G6 P! E) c
+layer=(copper,dThickness) layer=(die,dHeight1)7 V4 Z; P- O# A4 a
.fsoptions opt1 printdata=yes computeg0=yes computegd=yes computer0=yes computers=yes+ D- k3 E" B6 [# @& N
.model dstrip w modeltype=fieldsolver5 b/ E9 d8 O- d
+layerstack=stack
; z: d* J- B$ R& z' a) {8 W+fsoptions=opt13 b! c* ^ Y$ f9 q6 z
+rlgcfile=pcbdiff_top.rlgc/ [# x, r8 J; D& C! A
+outputformat=rlgcfile, g: m# J% s9 Z8 c
+conductor=(shape=trace origin=(0mil,'dHeight1+dThickness') material=copper type=signal)
. V- C+ w$ b7 X5 Y/ H2 e' J% s+conductor=(shape=trace origin=('dWidth+dGap','dThickness+dHeight1') material=copper type=signal)
9 T2 P$ ^. r! G. Q5 S8 Y.tran 1ns 10ns
5 O' H! Q+ `1 k.probe v(out1) v(in1)
4 g& Z3 u' r* i5 Y; `.end |
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