Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-02-21
2006-02-21
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S126000
Reexamination Certificate
active
07002360
ABSTRACT:
System for measuring a thickness of a circuit component on a printed circuit board (PCB). The system includes a first circuit, a power plane, a power strip, a calibration strip, a temperature sensor, and a second circuit. The power plane is coupled to the first circuit. The power strip is for providing power to the power plane and is disposed in the PCB connected to the power plane. The power strip has at least two vias. The calibration strip has a predetermined width and is disposed in said PCB. The calibration strip has at least two vias for measuring a voltage drop. The temperature sensor is coupled to the calibration strip and configured to measuring a temperature of the calibration strip. The second circuit is coupled to the temperature sensor and configured to determine the thickness of the calibration strip based on at least the temperature of the calibration strip.
REFERENCES:
patent: 720335 (1903-02-01), Eastman
patent: 4186339 (1980-01-01), Finger
patent: 4713607 (1987-12-01), Pepper
patent: 5095274 (1992-03-01), Brokaw
patent: 5386188 (1995-01-01), Minneman et al.
patent: 6028426 (2000-02-01), Cameron et al.
patent: 6154041 (2000-11-01), Cheng
patent: 198 38 974 (2000-03-01), None
“Using PCB as a Current Shunt”, Electronics World and Wireless World, Reed Business Publishing, vol. 99, No. 1691, Oct. 1993, pp. 862-863.
Broadcom Corporation
Deb Anjan
He Amy
Squire Sanders & Dempsey L.L.P.
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