Hi,

how can I give variables as parameter to a Verilog-A module?

I wrote the module Resistor in Verilog-A with parameter Noise and value of resistance.

Code:

module Resistor(p,n);
electrical p,n;
parameter real R=1.0 from [0:inf];
parameter integer Noise = 1 from [0:1];
...
endmodule 

I can pass numbers direktly as parameter:

Code:

Resistor #(.R(4)) r_gate(G, g); 

But I can't pass any calculated value or a value which is a parameter or variable.

I would like to pass the Variable "R_g", which will be calculated in following sample:

Code:

WF=UGW/1000;
WZ=WF/2;
Wtot=WF;
R_g=rg*WZ; 

I'm becoming the following error message from Agilent ADS:
"Invalid (non-static) initialization for parameter R"

Sometimes ADS gives non error message but the result of the DC-simulation are not practicable.

How I solve this problem?

Thanks a lot!

Hi,

the declaration as localparam solved my problem.

Thanks a lot.