M/a -com, Inc.

Yongwen Yang

David Bengtson

Anthony Dennis

Walid Ahmed

Christine DiVincenzo

Carol Moy

Radwan Husseini

Robert Servilio

The invention is directed to a system for adaptively re-aligning a modulated output signal having an error component by generating a reference phase signal using a phase input signal; generating a sample phase signal from the output signal; comparing the reference and sample signals; and adaptively re-aligning any difference between the reference and sample signals to substantially reduce the error component. The invention may incorporate a sampling circuit for sampling the output signal to generate the sample signal; a digital phase locked loop for combining the phase input signal with a carrier wave to generate the reference signal and comparing them to generate a phase error signal; a reference filter for generating reference phase error information; a combining circuit for combining the phase error signal with the reference phase error information to generate a correction signal; and an adaptive gain control circuit for adaptively controlling gain in the correction signal to generate a final estimated error used to re-align the output signal with the phase input signal.

Apparatus, methods and articles of manufacture for signal correction using adaptive phase re-alignment

A transmitter comprises a baseband processor, a wideband phase modulator and an amplitude modulated amplifier. A signal is provided through the baseband processor and is converted into polar coordinates, comprised of amplitude and phase components, with the amplitude component being transmitted to the amplitude modulated amplifier. The amplitude modulated amplifier being comprised of independently controllable current sources, and with the phase component being transmitted to the wideband phase modulator, for modulation upon a carrier wave, and subsequent transmission to the amplitude modulated amplifier for amplification according to control imposed by the amplitude component upon the current sources.

Electromagnetic wave transmitter systems, methods and articles of manufacture

The invention is directed to a system for dynamically correcting an electromagnetic wave by processing two or more aspects of the electromagnetic wave along two or more separate signal paths; comparing an expected value for at least one of the aspects of the electromagnetic wave with an actual value for the aspect of the electromagnetic wave to generate a correction signal; and applying the correction signal to at least one other aspect of the electromagnetic wave. The aspects of the electromagnetic wave to be processed may be amplitude and phase, where the comparison may be along the phase path and the adjustment along an analog portion of the amplitude path. A digital phase locked loop may be used for the comparison and to generate the correction signal; and a bank of pipeline registers may be used to adjust the amplitude path.

Apparatus, methods and articles of manufacture for dynamic differential delay correction

A transceiver and transmitter are shown. A baseband processor receives a signal for transmission. It converts the signal into amplitude and phase polar components. Each component is then processed&#x2014;the phase component through a wideband phase modulator and the amplitude component through a wideband amplitude modulator, and the components are then recombined for further processing or transmission.

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Hillsboro, NJ, United States of America

Yongwen Yang