Transmission line bounding models
AssigneeInternational Business Machines Corporation
InventorsPaul Eric Dahlen, Roger John Gravrok, David Loren Heckmann, Mark Owen Maxson
Life of this patent
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Abstract
A method, apparatus, system, and signal-bearing medium that in an embodiment select a subset of transmission line models based on bounding electrical criteria. The bounding electrical criteria may include combinations of maximum and minimum values and in an embodiment may also include nominal values. Models that meet the bounding electrical criteria may be used in modeling the transmission line while models that do not meet the bounding electrical criteria are not used.
Claims16
A method comprising:
- submitting a plurality of input parameter combinations to a model generator;
- and
- selecting a subset of a plurality of transmission line models generated by the model generator, wherein the subset meets a bounding electrical criteria, wherein the bounding electrical criteria comprises a plurality of combinations of targets, wherein the plurality of combinations of targets further comprises a first minimum impedance and a first minimum attenuation, a second minimum impedance and a second maximum attenuation, a third maximum impedance and a third minimum attenuation, and a fourth maximum impedance and a fourth maximum attenuation.
An apparatus comprising:
- means for determining whether a transmission line model for a printed circuit board meets a bounding electrical criteria, wherein the bounding electrical criteria comprises a plurality of combinations of targets, wherein the plurality of combinations of targets further comprises a first minimum impedance and a first minimum attenuation, a second minimum impedance and a second maximum attenuation, a third maximum impedance and a third minimum attenuation, and a fourth maximum impedance and a fourth maximum attenuation;
- and
- means for adjusting a control parameter to a model generator that generated the transmission line model when the transmission line model does not meet the bounding electrical criteria.
A signal-bearing medium encoded with instructions, wherein the instructions when executed comprise:
- submitting a plurality of input parameter combinations to a model generator;
- and
- determining that a subset of a plurality of transmission line models generated by the model generator meet a bounding electrical criteria, wherein the bounding electrical criteria comprises a plurality of combinations of targets, wherein the plurality of combinations of targets further comprises a first minimum impedance and a first minimum attenuation, a second minimum impedance and a second maximum attenuation, a third maximum impedance and a third minimum attenuation, and a fourth maximum impedance and a fourth maximum attenuation.
An electronic device comprising:
- a processor;
- and
- a storage device encoded with instructions, wherein the instructions when executed on the processor:
- determine whether a transmission line model for a printed circuit board meets a bounding electrical criteria, wherein the bounding electrical criteria comprises a plurality of combinations of targets, wherein the plurality of combinations of targets further comprises a first minimum impedance and a first minimum attenuation, a second minimum impedance and a second maximum attenuation, a third maximum impedance and a third minimum attenuation, and a fourth maximum impedance and a fourth maximum attenuation, and
- when the transmission line model does not meet the bounding electrical criteria, the instructions discard the transmission line model and adjust at least one control parameter to a model generator that generated the transmission line model.
Dependencies are inferred from the claim text.