[SI-LIST] hpsice question
- From: qzheng <qzheng@xxxxxxxxxxxxxxxx>
- To: si-list <si-list@xxxxxxxxxxxxx>
- Date: Wed, 19 Jun 2002 14:52:16 +0800
Hello ,
thanks very much
Now i have find my mistake is a 'syntax error ' which causing the
*terminal error* , and the code can normaly runing .But another
thing occurs ,the simulate have 'timestep too small ' error ,so
i have to change some options ,fortunately i got the result.
The topology i want to simulate is a edgecouple line which is a far-end
cluster, below is my code , what problem will it be have ??
Another problem: if i want to simulate a 2.5g trace,how to extract
the parameter and how to segment the line ,
appreciate for all advices.
----------------------------------------------------------------
main ckt
*
*
xline TXOP TXON RXIP1 RXIN1 RXIP2 RXIN2 0
+line_cross
*
*
.option method=gear
.option accura
.options delmax=10ps
.options LVLTIM=1
.op
.tran 50ps 51.44n
--------------------------------------------------
.SUBCKT line_cross in1 in2 out11 out12 out21 out22 0
rsr1 in1 node1 0.0001
rsr2 in2 node2 0.0001
Wedgecoup1 node1 node2 0 node3 node4 0
+ FSmodel= inner_layer_2c N=2 l=4200mil
rdumb1 node3 node31 0.01
rdumb2 node4 node41 0.01
rdumb3 node3 node32 0.01
rdumb4 node4 node42 0.01
Wedgecoup2 node31 node41 0 node5 node6 0
+ FSmodel= inner_layer_2c N=2 l=4200mil
Wedgecoup3 node32 node42 0 node7 node8 0
+ FSmodel= inner_layer_2c N=2 l=5600mil
rlr1 node5 out11 0.0001
rlr2 node6 out12 0.0001
rlr3 node7 out21 0.0001
rlr4 node8 out22 0.0001
**** end circuit network here ****
********** W element define ********************
.MATERIAL diel1_fr4 DIELECTRIC ER = 4.5 lOSSTANGENT = 0.021
.MATERIAL copper METAL CONDUCTIVITY= 5.8e+07
* Conductor crossection shapes
.SHAPE rect_in RECTANGLE WIDTH=6mil, HEIGHT=1.37mil
******** Dielectric stack-up *************
.LAYERSTACK bp_Stack_inn
+ LAYER = (copper, 1.37mil)
+ LAYER = (diel1_fr4,6.5mil)
+ LAYER = (diel1_fr4,20.0mil)
+ LAYER = (copper, 1.37mil)
* Field-solver options
.FSOPTIONS opt1 GRIDFACTOR=2 PRINTDATA=YES
+ComputeRo=yes ComputeRs=yes
+ComputeGo=yes ComputeGd=yes
************ model defintion *********************
.MODEL inner_layer_2c W ModelType=FieldSolver
+ LAYERSTACK= bp_Stack_inn
+ FSOptions=opt1
+ RLGCFILE = FS_inn_2c.RLGC
+ CONDUCTOR = (SHAPE=rect_in, ORIGIN=(0mil ,7.87mil), MATERIAL = copper )
+ CONDUCTOR = (SHAPE=rect_in, ORIGIN=(12mil,7.87mil), MATERIAL = copper )
.ENDS
-------------------------------------------------------------------------------
--
Best regards,
qzheng mailto:qzheng@xxxxxxxxxxxxxxxx
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