Global equivalent circuit modeling system for substrate mounted circuit components incorporating substrate dependent characteristics

A method for generating an equivalent circuit model to determine the behavior and frequency performance of a substrate mounted chip inductor mounted upon a given substrate, the chip inductor comprising a plurality of coil turns in a surface-mounted package, the method comprising the steps of:

• determining input parameters of the equivalent circuit model, wherein some of which are dependent upon characteristics of the substrate upon which the chip inductor is mounted;
• representing the chip inductor mounted upon the substrate as an equivalent electrical circuit;
• calculating substrate dependence inductance terms based upon the input parameters;
• and
• creating a unique equivalent circuit model for the chip inductor upon the given substrate, the unique equivalent circuit model representing the mounting of the chip inductor upon the given substrate wherein the equivalent circuit model provides behavior and performance predictions of the chip inductor based upon the given substrate characteristics.

A method for generating an equivalent circuit model to determine the behavior and frequency performance of a substrate mourned chip resistor mounted upon a given substrate, the method comprising the steps of:

• determining input parameters of the equivalent circuit model, wherein some of which are dependent upon characteristics of the substrate upon which the chip resistor is mounted;
• representing the chip resistor mounted upon the substrate as an equivalent electrical circuit;
• calculating substrate dependence inductance terms based upon the input parameters;
• and
• creating a unique equivalent circuit model for the chip resistor upon the given substrate, the unique equivalent circuit model representing the mounting of the chip resistor upon the given substrate wherein the equivalent circuit model provides behavior and performance predictions of the chip resistor based upon the given substrate characteristics.

A computer program stored in a computer readable medium embodying instructions to perform a method for generating an equivalent circuit model to determine the behavior and frequency performance of a substrate mounted electrical circuit component mounted upon a given substrate, the equivalent circuit model incorporating substrate-dependent parameters, the method comprising the steps of:

• selecting an electrical circuit component from a group consisting of a single-layer capacitor, a resistor, a chip inductor, an air-coil inductor, a ceramic chip inductor, a ferrite bead, a plastic packaged diode, a plastic packaged transistor, a plastic packaged switch, a beam-lead diode, a coaxial ceramic surface mount resonator, a filter, a coupler and a transformer,
• determining input parameters of the equivalent circuit model, wherein some of which are dependent upon characteristics of the substrate upon which the electrical circuit component is mounted, for the selected electrical circuit component;
• representing the electrical circuit component mounted upon the substrate as an equivalent electrical circuit;
• formulating mathematical expressions based upon the input parameters;
• and
• creating a unique equivalent circuit model for the electrical circuit component mounted upon the given substrate, the unique equivalent circuit model representing the mounting of the electrical circuit component upon the given substrate wherein the equivalent circuit model provides the behavior and frequency performance predictions of the electrical circuit component based upon the given substrate characteristics.