Patent Number: 7,088,982

Title: Gilbert cell and method thereof

Abstract: A stacked Gilbert cell mixer performs two frequency conversions in at least one of a wireless transmitter and receiver and includes a first stage of the stacked Gilbert cell mixer that converts a voltage signal input to the stacked Gilbert cell mixer to a current signal. A second stage of the stacked Gilbert cell mixer communicates with said first stage of the stacked Gilbert cell mixer and performs a first frequency conversion. A third stage of the stacked Gilbert cell mixer communicates with the second stage of the stacked Gilbert cell mixer and performs a second frequency conversion. Said first stage includes first and second transistors, said second stage includes third, fourth, fifth and sixth transistors and said third stage includes seventh, eighth, ninth and tenth transistors.

Inventors: Chien; George (Cupertino, CA)

Assignee: Marvell International Ltd.

International Classification: H04B 1/26 (20060101)

Expiration Date: 8/08/02018