LEVEL DE-MULTEPLEXED DELTA SIGMA MODULATOR BASED TRANSMITTER

摘要

This specification discloses a level de-multiplexed DSM based transmitter and a method for providing the same. Broadly embodiments of the present specification enable wireless transmitters that are based on multi-level de-multiplexed DSM. A three-level de-multiplexed DSM based transmitter is disclosed as an example. More generally, the use of m-level de-multiplexed DSM is also taught, the specification thereby being enabling for broader applications to a person skilled in the art. At least one of the efficiency and linearity of transmitters can be enhanced as required for specific applications by a person of skill in the art in view of this specification and the teachings of its disclosed embodiments.

主权项

1. A level de-multiplexed DSM based transmitter, comprising:
a. a digital processing block adapted to digitally condition a digital input signal and to generate (m−1) signal streams, the digital processing block having an input and (m−1) outputs; b. a signal up-conversion block, having (m−1) inputs and (m−1) outputs, the inputs of the signal up-conversion block connected to the outputs of the digital processing block, the signal up-conversion block adapted to generate (m−1) constant envelope RF signals based on digital signals obtained from the digital processing block; and c. a signal amplification block having (m−1) inputs and one output, the inputs of the signal amplification block being connected to the outputs of the signal up-conversion block, the signal amplification block being adapted to amplify the RF signals present at its inputs.