Pulse generator having a phase and voltage varying pulse width

摘要

A pulse generator generates a square-wave pulsed signal that has a variable pulse width. The pulse width, which is defined by the delay through a delay line, varies in response to variations in an input voltage, as well as in response to phase differences between a reference clock signal and a trigger signal.

主权项

1. A pulse generator comprising:
a delay line to receive a trigger signal, generate a delayed trigger signal a delay time later in response to the trigger signal, and vary the delay time in response to changes in a magnitude of a phase shift current; a pulse circuit that is connected to the delay line, the pulse circuit to generate a pulsed signal in response to the trigger signal and the delayed trigger signal; an oscillator to generate a reference clock signal; and a phase detector/charge pump that is connected to the delay line, the pulse circuit, and the oscillator, the phase detector/charge pump to generate the phase shift current, detect a difference in phase between an edge of the reference clock signal and an edge of the pulsed signal, and vary the magnitude of the phase shift current in response to the difference in phase.