TxLine-transformer model for spice

I am looking for models of transmission line transformer to simulate in SPICE or any other simulation app. I am interested in Guanella and Rotroff transformer.

Thanks

First make a subcircuit of RLGC elements. Then string these together. To make things easier, make another subcircuit with ten of these in tandem. Then make another subcircuit with ten of these in tandem. A famous digital company uses this method for simulations.

Hi

you can read Pspice versoin 9.1 reference guide page 160. They use a K parameters with values for Lm and Cm.

You can also read this document :
http://www.chipcenter.com/TestandMea...s/tn/tn013.pdf