Open AccessPhase‐noise reduction by self‐injection locking in spatially extended tunnel‐diode oscillator
Author(s) -
Narahara K.
Publication year - 2019
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.2019.0679
Subject(s) - line (geometry) , phase noise , noise (video) , transmission line , physics , voltage , noise reduction , enhanced data rates for gsm evolution , reduction (mathematics) , diode , phase (matter) , injection locking , optics , electrical engineering , control theory (sociology) , engineering , acoustics , computer science , mathematics , optoelectronics , telecommunications , laser , geometry , control (management) , quantum mechanics , artificial intelligence , image (mathematics)
A scheme is proposed for reducing phase noise in a spatially extended oscillator using tunnel‐diode (TD) transmission line. It is observed that a voltage edge oscillates on a TD line when supplied by an appropriate DC voltage at the end. When the TD line is bypassed by a linear transmission line, part of the oscillating edge is inputted to and moves on the linear line to interact with the oscillating edge at the another crosspoint. The proper length of the linear line makes the bypassed voltage arrive at the crosspoint at the same time as the oscillating edge. It results in significant phase‐noise reduction of the oscillating edge through self‐injection locking. Herein, the principle of operation is described with its experimental validation.