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United States of America

PATENT NO 12261581
APP PUB NO 20240022226A1
SERIAL NO

17864188

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Abstract

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Systems and methods for generating a radio frequency (RF) signal by a digital-to-analog converter (DAC) with transmission frequency within a wide transmission frequency range are described. An output reactance of the DAC coupled (directly or indirectly) to one or more antennas corresponds to the transmission frequency of the RF signals. Multiple embodiments of the DAC are described to include circuitry for tuning the output reactance of the DAC, and therefore, shifting a center frequency to select a transmission frequency range (from multiple transmission frequency ranges) for providing the RF signals.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCONE APPLE PARK WAY CUPERTINO CA 95014

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hsieh, Chia-Yu Munich, DE 5 1
Passamani, Antonio Munich, DE 24 44
Raidl, Alfred Erik Linz an der Donau, AT 3 0

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