A note on VHF acoustically coupled bandpass crystal filters

A note on VHF acoustically coupled bandpass crystal filters

This letter reports an experimental investigation in which the use of acoustical coupling between thickness-shear resonators to obtain a monolithic crystal filter with bandpass characteristics is extended to the VHF region and overtone operation. Attenuation curves for a 112-MHz fifth-overtone filte...

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Veröffentlicht in:Proceedings of the IEEE 1967-01, Vol.55 (3), p.422-423
Hauptverfasser: Smythe, R.C., Horton, W.H., Angove, R.B.
Format: Artikel
Sprache:eng
Schlagworte:
Anisotropic magnetoresistance
Band pass filters
Bandwidth
Coupling circuits
Frequency
Magnetic anisotropy
Perpendicular magnetic anisotropy
Plasmas
Resonator filters
VHF circuits
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Beschreibung
Zusammenfassung:This letter reports an experimental investigation in which the use of acoustical coupling between thickness-shear resonators to obtain a monolithic crystal filter with bandpass characteristics is extended to the VHF region and overtone operation. Attenuation curves for a 112-MHz fifth-overtone filter with a bandwidth of 14 kHz are given, showing good stopband performance over the 10 to 300 MHz range of measurement.
ISSN:0018-9219
1558-2256
DOI:10.1109/PROC.1967.5512