| T O P I C R E V I E W |
| Enrico |
Posted - Feb 28 2008 : 22:46:41
Can you tell me what MakeLnegative does? |
| 2 L A T E S T R E P L I E S (Newest First) |
| nordkapp |
Posted - Mar 12 2008 : 11:35:54
Both positiv and negative within one result?
Example: change of M with different f's:
Freq = 1
Row 0: 0.000279364+5.17644e-009j 1.4328e-005-1.4991e-010j
Row 1: 1.4328e-005-1.50214e-010j 0.000107477+1.9596e-009j
Freq = 1e+006
Row 0: 0.000533542+3.51634e-009j 1.56346e-005+5.30262e-011j
Row 1: 1.56466e-005+5.30451e-011j 0.000227285+7.76725e-010j
I really don't get the physical explanation. |
| Enrico |
Posted - Feb 28 2008 : 22:50:43
MakeLcircuit isn't able to digest inductance matrixs with negative
couplings or, better, MakeLcircuit is able to, but most Spice flavours do not like K elements with negative values (e.g. PSpice, Eldo from Cadence, etc.)
So, MakeLnegative is a slightly modified version of MakeLcircuit, which uses two inductors per each matrix entry. If the coupling is negative, the inductors are cross-coupled. In this way is possible to have both positive and negative couplings. The drawback is that you are using two inductors instead of one, so use MakeLcircuit if you can.
Enrico
|
|
|
