Phase mixer with adjustable load-to-drive ratio

Details Phase mixer with adjustable load-to-drive ratio Phase mixer with adjustable load-to-drive ratio

2011-03-08

2011-03-08

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Phase shift by less than period of input

C324S234000, C324S236000

Reexamination Certificate

active

07902896

ABSTRACT:
Phase mixers, clock signal generators, memories and methods for providing an output signal having a phase relative to the phase difference of input clock signals are disclosed. One such phase mixer includes a phase mixer circuit having inputs and an output. The phase mixer is configured to receive a plurality of input clock signals and generate an output clock signal at the output having a phase relative to the plurality of input clock signals. The phase mixer further includes an adjustment circuit coupled to the phase mixer circuit. In some phase mixers, a control circuit coupled to the phase mixer circuit and the adjustment circuit is included. The control circuit is configured to generate a control signal based on the input signals to adjust an electrical load-to-drive ratio of the phase mixer.

REFERENCES:
patent: 7057431 (2006-06-01), Kwak
patent: 7138849 (2006-11-01), Park
patent: 7282977 (2007-10-01), Lee
patent: 7417478 (2008-08-01), Kim et al.

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