Open AccessMethodology for digital synthesis of ultra‐narrow pulses
Author(s) -
Fu Zaiming,
Liu Hanglin,
Ren Nan
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2018.1218
Subject(s) - picosecond , pulse width modulation , waveform , pulse (music) , time domain , limit (mathematics) , gate array , computer science , electronic engineering , full width at half maximum , range (aeronautics) , optics , materials science , field programmable gate array , physics , engineering , telecommunications , computer hardware , power (physics) , mathematics , laser , radar , mathematical analysis , quantum mechanics , detector , composite material , computer vision
A precise method of controlling the pulse width using a digital synthesis system is proposed for measurements in the picosecond domain and gigahertz frequency domain. Unlike the traditional pulse synthesise method based on reshapers, the proposed method of synthesising a pulse waveform and adjusting the pulse width is entirely digital. The method realises an ultra‐narrow pulse width by breaking the limit of propagation delay of devices, and the width can be adjusted in fine steps over a wide range (e.g. from a few seconds to hundreds of picoseconds). Programmable delay lines and high‐speed triggers and digital counters within a field‐programmable gate array are used. Experimental results show that the proposed approach generates a pulse that is controllable in 1 ps steps from a minimum width of 100 ps to a maximum width of 1000 s.