Hi,

In Spectre, there is an ideal transformer component (called transformer). This one is "truly" bidirectional - one can force the current or voltage (connect ideal current or voltage source) to either primary or secondary winding.

i just wondered, if such a component can be written in Verilog-A as well.My best try was:

module idealTransformer(pLeft, nLeft, pRight, nRight);
 parameter real ratio = 2 from (0:inf);

 inout pLeft, nLeft, pRight, nRight;
 electrical pLeft, nLeft, pRight, nRight;

 analog begin
     V(pRight,nRight) <+ ratio*V(pLeft, nLeft);
     I(pLeft,nLeft) <+ -ratio*I(pRight, nRight);
 end
endmodule

,what works fine for real loading of ports. However, one cannot e.g. connect the ideal voltage source to the pRight, nRight ports.

Thanks for comments,

Miro