Patent ID: 9337876
Filing Date: 2016-05-10
CPC Classification: H03F,H03M,H04B

Claim Text:
1. A digital wireless transmitter comprising: a serial-to-parallel converter configured to receive and interpolate a serial digital input signal, and to output N parallel signals, wherein N is a positive integer greater than one; a delta-sigma modulator (DSM) configured to perform delta-sigma modulation on the N parallel signals in parallel, and to output N delta-sigma modulated signals in parallel; and a radio frequency (RF) converter configured to arrange the N delta-sigma modulated signals into K parallel signals, to delay the K parallel signals by different delay times from one another, and to convert the delayed signals into an RF signal, where K is a positive integer greater than N, wherein the DSM includes first through N-channel DSM units, wherein the first channel DSM unit is configured to perform a first addition of a first parallel signal of the N parallel signals and a first signal generated by the second channel DSM unit, and wherein the second channel DSM unit is configured to perform at least one quantization on a second signal generated based on a result of the first addition of the first parallel signal and the first signal generated by the second channel DSM unit.