Patent ID: 9071303
Filing Date: 2015-06-30
Classification: H03F,H03M,H04B

Abstract:
1. A level de-multiplexed Delta Sigma Modulator (DSM) based transmitter, comprising: a. an m-level DSM unit, wherein m is an integer greater than or equal to 3, the DSM unit adapted to quantize an input signal into m−1 non-Zero quantization levels and a Zero level, the DSM unit further adapted to generate (m−1) de-multiplexed signal streams with substantially no time overlap between any two signal streams, each signal stream having a Zero-level component and a Non-zero component, the non-zero component corresponding to one of the (m−1) non-Zero quantization levels; b. a signal up-conversion block, adapted to receive the (m−1) de-multiplexed signal streams from the m-level DSM unit and to frequency up-convert the (m−1) signal streams into (m−1) radio frequency (RF) signals; and c. a signal amplification block adapted to receive the (m−1) RF signals, to amplify the (m−1) RF signals into (m−1) amplified signals and to combine the (m−1) amplified signals into an output signal.