Reduced mounting inductance and increased self-resonant...

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices

Reexamination Certificate

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C361S310000, C174S255000

Reexamination Certificate

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07746660

ABSTRACT:
Reduced mounting inductance and/or an increased self-resonant frequency range of operation for capacitor circuits of a circuit board is described. The circuit board has a mounting pad for coupling a capacitor to at least three vias arranged in a pattern and coupled to the mounting pad at least three discrete locations to reduce mounting pad inductance. Alternatively or additionally, top and bottom mounted capacitors to the circuit board have a physically and electrically common through via to provide a self-resonant frequency range of operation.

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Alexander, Mark, “Power Distribution System (PDS) Design: Using Bypass/Decoupling Capacitors”, Feb. 28, 2005, pp. 1-27, XAPP623, version 2.1, available from Xilinx, Inc., 2100 Logic Drive, San Jose, CA 95124.

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