[SI-LIST] high-order coupling between inductors in hspice

Dear all 
I have a question about high-order coupling between inductors in hspice. In 
hspice manual, it is described that the second order coupling between inductors 
could be automatically calculated. For example, there is L1, L2 and L3. The 
coupling between L1 and L2, L2 and L3, is K1 and K2 respectively. The coupling 
K3 between L1 and L3 could be automatically calculated as K3=K1*K2.

My question is that if there are more than three inductor, the calculation is 
still OK or not. For example, there is four inductor, L1, L2, L3, and L4. Could 
I only express the coupling between L1 and L2, L2 and L3, L3 and L4? I have 
made a simple circuit to check. The result of hspice and matlat agree to each 
other. However, I am still not sure about that. In the manual, this kind of 
situation is not described. Please give me some advice.

Best Regards

Zhangkun
2004.10.25


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