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Invention of temperature‐insensitive quartz oscillation plate enabling highly stable communications and clocks: Review of Issac Koga's works
Author(s) -
Iga Kenichi
Publication year - 2016
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/2016rs006053
Subject(s) - crystal oscillator , quartz , oscillation (cell signaling) , crystal (programming language) , electronics , radio frequency , temperature coefficient , optics , materials science , physics , optoelectronics , telecommunications , electrical engineering , computer science , chemistry , engineering , composite material , biochemistry , resonator , programming language
This is a review article on a stable quartz oscillator. In April 1933, Issac Koga of Tokyo Institute of Technology reported R 1 cut quartz crystal plates having a zero temperature coefficient of frequency. This invention was used at first for radio transmitters and later on for clocks. Today, this type of temperature‐insensitive quartz crystal oscillator has proven indispensable to all radio communication systems and much of information electronics.