Balanced accuracy for extraction

A method for performing parasitic extraction for a component having a plurality of ports comprising:

• calculating a minimum output impedance for each of said ports;
• estimating a maximum parasitic impedance for each of said ports;
• determining an amount by which said maximum parasitic impedance exceeds said minimum output impedance for each of ports;
• extracting actual parasitic impedance values from ports where said maximum parasitic impedance exceeds said minimum output impedance by more than a predetermined amount;
• and
• using said estimated maximum parasitic impedance as said actual parasitic impedance for ports where said maximum parasitic impedance does not exceed said minimum output impedance by more than said predetermined amount.

A system for performing parasitic extraction for a component having a plurality of ports comprising:

• a calculator adapted to calculate a minimum output impedance for each of said ports;
• an estimator adapted to estimate a maximum parasitic impedance for each of said ports;
• a comparator adapted to determine an amount by which said maximum parasitic impedance exceeds said minimum output impedance for each of ports;
• and
• a selector adapted to extract actual parasitic impedance values from ports where said maximum parasitic impedance exceeds said minimum output impedance by more than a predetermined amount.

A program storage device readable by machine, tangibly embodying a program of instructions executable by said machine to perform a method for performing parasitic extraction for a component having a plurality of ports, said method comprising:

• calculating a minimum output impedance for each of said ports;
• estimating a maximum parasitic impedance for each of said ports;
• determining an amount by which said maximum parasitic impedance exceeds said minimum output impedance for each of ports;
• and extracting actual parasitic impedance values from ports where said maximum parasitic impedance exceeds said minimum output impedance by more than a predetermined amount.