George R Sarkees

US Patent:

7805117, Sep 28, 2010

Filed:

Feb 28, 2006

Appl. No.:

11/363732

Inventors:

George R. Sarkees - Pembroke Pines FL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01Q 11/12
H04B 1/04

US Classification:

4551273, 455 14, 4551151, 4551272

Abstract:

A transmitter () includes a plurality of amplifier “n” stages () providing predetermined gain stages and a plurality of filters (). Each filter () is distributed between each gain stage () () so as to reject far out noise in accordance with the gain stage preceding that filter.

US Patent:

7859334, Dec 28, 2010

Filed:

Dec 1, 2008

Appl. No.:

12/325572

Inventors:

George R. Sarkees - Pembroke Pines FL, US
Lee V. Nagle - Coral Springs FL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03G 3/20

US Classification:

330129, 330279

Abstract:

A hybrid power control system () that selectively applies voltage-based gain control and current-based gain control and method () of controlling a power amplifier () gain are presented. A voltage-based gain control signal () is applied to control the gain of the power amplifier when a level output power is indicated by a power contour signal (). Whether the power amplifier is saturated is identified. A current-based gain control signal () is applied to control the gain of the power amplifier when the power amplifier is saturated and a decrease in output power is indicated by the power contour signal.

US Patent:

7492239, Feb 17, 2009

Filed:

Oct 16, 2007

Appl. No.:

11/872735

Inventors:

George R. Sarkees - Pembroke Pines FL, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01P 5/12

US Classification:

333124, 333100, 333129, 333132

Abstract:

An electronic circuit, an RF signal power amplifier circuit, and an integrated circuit provide for combining two radio frequency signals. These circuits include, among other things, capacitors () that provide an elliptic section. This elliptic section simultaneously allows for filtering and reduction in required values for first and second inductors (), respectively. For example, the filtering provided by the capacitors () allows for the harmonic of the combining frequency to be filtered out. This allows a designer to compensate for additional loss experienced by the circuit () by reducing filtering from sections that follow the circuit ().