Signal conversion method, signal transmission method, signal conversion device, and transmitter

摘要

A signal conversion method including converting an input signal into a 1-bit pulse train representing an analog signal is provided. The 1-bit pulse train has a pulse rising waveform frise and a pulse falling waveform ffall. The pulse rising waveform frise includes a first distortion component with respect to an ideal pulse rising waveform, and the pulse falling waveform ffall includes a second distortion component with respect to an ideal pulse falling waveform. The first distortion component and the second distortion component are substantially line-symmetric with respect to a time axis.

主权项

1. A signal conversion method, comprising:
converting an input signal into a 1-bit pulse train that represents an analog signal, the input signal being an RF signal, wherein the 1-bit pulse train has a pulse rising waveform and a pulse falling waveform, the pulse rising waveform including a first distortion component with respect to an ideal pulse rising waveform, and the pulse falling waveform including a second distortion component with respect to an ideal pulse falling waveform, and the first distortion component and the second distortion component are substantially line-symmetric with respect to a time axis; the signal conversion method further comprising: reducing a leakage power outside the frequency band of the RF signal represented in the 1-bit pulse train by suppressing line-asymmetry of the first distortion component and the second distortion component to make the first distortion component and the second distortion component substantially line-symmetric with respect to the time axis.