International Business Machines Corporation

Holly A LaFerrara

Karen Lynne Holloway

Timothy J Wiltshire

Roger J Yerdon

Alexander L Martin

Martin E Powell

Nathaniel King

A method and apparatus includes an integrated circuit device, and at least one alignment mark on the integrated circuit device, the alignment mark comprises a first coded region, a second coded region adjacent the first coded region, and a third coded region adjacent the second coded region, the second coded region located between the first coded region and the third coded region, and markings on the first coded region and the third coded region being identical.

Method for providing rotationally symmetric alignment marks for an alignment system that requires asymmetric geometric layout

A RF integrated circuit including an amplifier having an input node and an output node; a switchable feedback path coupled between the output node and input node; and a switchable bias injector coupled to the input node. When the switchable feedback path is off and the switchable bias injector is on, the amplifier is in a high gain state. When the switchable feedback path is on and the switchable bias injector is off, the amplifier is in a low gain state. The circuit may be used in up converters and down converters for CDMA systems.

Variable gain RF amplifier with switchable bias injection and feedback

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Wappingers Falls, NY, United States of America

Holly A LaFerrara