rlgc from s parameter

Hi all:

I want to ask you a question about how to extract
RLGC transmission line parameter from S-parameter.

For single transmission, the conversion between RLGC
and 2-port S-parameter is easy to find.
But for coupled transmission line--only two Tline, I have difficuity to find
the mutual RLGC ( RLGC matrix) from 4-port S-parameter.

Can someone kindly give me a guide?
Any format is fine, such as paper, discussion.

Thanks

Div

My suggestion is to use LINPAR software and very informative user guide(A. Djordjevic, B. Bazdart and T. Sarkar, Artech House) to extract the parameters. Also try the search for papers of Antonije Djordjevic on IEEE.

Regards
D.

Hello,
I like to know how to extract
RLGC transmission line parameter from 2 port S-parameter.