Method and apparatus for providing non 2:1 Gilbert cell mixer

Details Method and apparatus for providing non 2:1 Gilbert cell mixer Method and apparatus for providing non 2:1 Gilbert cell mixer

2007-01-09

2007-01-09

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

Reexamination Certificate

active

10824960

ABSTRACT:
A method and apparatus for providing non 2:1 current in a Gilbert cell mixer is disclosed. The Gilbert cell mixer provides lower voltage operation, lower LO drive and better linearity. Additional current sources are provided to drive the lower, source-coupled transistor pair thereby allowing operation of the switch transistors with lower current.

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Paul Gray et al.; “Analysis and Design of Analog Integrated Circuits”; Section 10.3; John Wiley & Sons, N.Y.,; 1993; pp. 667-681.
Barrie Gilbert; “The Micromixer: A Highly Linear Variant of the Gilbert Mixer Using a Bismmetric Class-AB Input Stage”; IEEE Journal of Solid-State Circuits, vol. 32, No. 9; Sep. 1997; pp. 1412-1423.

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