Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate
2007-05-15
2007-05-15
Vuong, Quochien B. (Department: 2618)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
C455S072000, C327S148000, C327S157000, C327S538000, C327S543000, C323S315000, C331S017000, C331S025000, C331S183000, C331S185000
Reexamination Certificate
active
10444245
ABSTRACT:
A current mirror with selectable filter poles provides a selected low pass filtering function to a DC bias signal generated by the current mirror. Coupled between a first MOSFET and second MOSFET of the current mirror, a low pass filter with selectable filter poles comprises a plurality of resistor-configured MOSFETs coupled to at least one capacitor-configured MOSFET to provide one of a fast settle time and improved filtering for the current mirror in one embodiment of the invention. A first resistor-configured MOSFETs, biased by logic and bias circuitry, provides a low frequency filter pole that provides an improved filtering for the current mirror. A second resistor-configured MOSFET provides a high frequency filter pole that provides a fast charge time to meet a settle time requirement.
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Behzad Arya (Reza)
Carter Keith A.
Broadcom Corporation
Garlick & Harrison & Markison
Harrison James A.
Lu Zhiyu
Vuong Quochien B.
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