Method of modeling a portion of an electrical circuit using a pole-zero approximation of an s-parameter transfer function of the circuit portion
AssigneeInternational Business Machines Corporation
InventorsFaraydon Pakbaz, Amanullah Mohammad
Life of this patent
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Abstract
A method (1100) of creating a behavioral model of a portion (400) of an electrical circuit. The method includes collecting data by measuring an S-parameter of the circuit portion. A transfer function approximation (412, 1000) is then constructed from the S-parameter data. The transfer function approximation is simplified to provide a partial fraction expansion (416). The behavioral model includes a passive filter (420, 1004) designed to represent the partial fraction expansion.
Claims20
A method of characterizing a portion of an electrical circuit, comprising:
- a) deriving a transfer function for the portion of the electrical circuit based on a measured response of the portion to a known input to the portion;
- and
- b) running a computer simulation as a function of said transfer function.
A method of converting S-parameter data to an elemental approximation, comprising:
- a) deriving a transfer function from the S-parameter data;
- and b) representing said transfer function as an elemental representation.
A method of creating a behavioral model of a printed circuit board communication interconnect, comprising:
- a) deriving a transfer function for the communication interconnect based on a measured response of the communication interconnect to a known input to the communication interconnect;
- and b) running a computer simulation as a function of said transfer function.
Dependencies are inferred from the claim text.