DocumentCode
1401653
Title
Ceramic-metal composite resonators
Author
Birch, J. ; Dredge, C.J. ; Riches, E.E.
Author_Institution
General Electric Company Limited, Central Research Laboratories, Hirst Research Centre, Wembley, UK
Volume
109
Issue
22
fYear
1962
fDate
5/15/1905 12:00:00 AM
Firstpage
355
Lastpage
361
Abstract
The results of investigations into the design and performance of composite resonators, for use in electric wave filters in the frequency range 15¿30 kc/s, are reported. Each resonator comprises a ferro-electric ceramic element bonded between two metal rods so as to form a half-wavelength resonator. By using metal having a low temperature coefficient of elastic modulus, the frequency/temperature stability of the resonators can be restricted to a few parts per million per degree Celsius over the range 10¿50° C. Ageing of the electrical parameters at present imposes limitations on the use of such resonators which, by comparison with low-frequency quartz crystals, offer advantages of cheapness, simplicity of manufacture and low capacitance ratios.
Keywords
filters; resonators;
fLanguage
English
Journal_Title
Proceedings of the IEE - Part B: Electronic and Communication Engineering
Publisher
iet
ISSN
0369-8890
Type
jour
DOI
10.1049/pi-b-2.1962.0063
Filename
5244748
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