Crystal, ceramic, and mechanical filters in Japan

1 January 1979

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE

Vol. 67 (1) , 75-102
https://doi.org/10.1109/PROC.1979.11204

Abstract

In Japan, there has been considerable activity in the research and manufacturing of quartz crystal filters, ceramic filters and mechanical filters. This paper reviews some of these contributions. An emphasis is placed on filters actually used. First multiple-mode resonators are reviewed; this concept having had profound effects on all types of filters. Quartz-crystal filters as well as other crystal filters are discussed. Then follow reviews on ceramic and mechanical filters.

Keywords

CERAMICS
RESONATOR FILTERS
FERROELECTRIC MATERIALS
VIBRATION MEASUREMENT
CIRCUIT THEORY
SURFACE ACOUSTIC WAVES
FILTERING THEORY
CIRCUIT ANALYSIS
TRANSFER FUNCTIONS
MOS DEVICES

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