Impedance-estimation methods, modeling methods, articles of...

Details Impedance-estimation methods, modeling methods, articles of... Impedance-estimation methods, modeling methods, articles of...

2007-05-24

2009-11-17

Nghiem, Michael P (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

Reexamination Certificate

active

07620507

ABSTRACT:
An impedance estimation method includes measuring three or more impedances of an object having a periphery using three or more probes coupled to the periphery. The three or more impedance measurements are made at a first frequency. Three or more additional impedance measurements of the object are made using the three or more probes. The three or more additional impedance measurements are made at a second frequency different from the first frequency. An impedance of the object at a point within the periphery is estimated based on the impedance measurements and the additional impedance measurements.

REFERENCES:
patent: 6965836 (2005-11-01), Richardson
patent: 7088115 (2006-08-01), Glenn et al.
patent: 7419487 (2008-09-01), Johnson et al.
patent: 7481913 (2009-01-01), Kawase et al.
“Resistance and Impedance in AC Circuit Tutorial”, pp. 1-2, printed Mar. 23, 2009.

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