Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate
2006-02-07
2006-02-07
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
C327S311000, C327S557000, C307S127000
Reexamination Certificate
active
06995605
ABSTRACT:
A resonance suppression circuit is provided to suppress resonance on a power grid of a chip or die. The resonance suppression circuit may include a band-pass filter portion, a comparator portion, an amplification portion and a current dissipation portion. The band-pass filter portion may include an inverter coupled between two signal lines of the power grid. The comparator portion may sense voltage fluctuations at approximately the resonance frequency and trigger the current dissipation portion to turn ON and thereby change the frequency spectrum of the load current on the power grid to suppress the power grid resonance.
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Patrik Larsson, Resonance and Damping in CMOS Circuits with On-Chip Decoupling Capacitance;: IEEE Transactions on Circuits and Systems—I: Fundamental Theory and Applications, vol. 45, No. 8, Aug. 1998; pp. 849-858.
Luca Amoroso et al., “Single Shot Transient Suppressor (SSTS) for High Current High Slew Rate Microprocessor;” 1999 IEEE; pp. 284-288.
Michael Ang et al.; “WP 26.7 An On-Chip Voltage Regulator Using Switched Decoupling Capacitors” 2000 IEEE International Solid-State Circuits Conference; pp. 438-439.
De Vivek K.
Hazucha Peter
Karnik Tanay
Paillet Fabrice
Schrom Gerhard
Fleshner & Kim LLP
Le Dinh T.
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