High frequency fundamental mode resonators: equivalent electrical data dependence on electrode properties and blank surface

Author

Seydel, Eberhard ; Weitzel, Lothar

Author_Institution

KVG Kristall-Verarbeitung Neckarbischofsheim GmbH, Germany

fYear

1996

fDate

5-7 Mar 1996

Firstpage

8

Lastpage

13

Abstract

High frequency fundamental mode crystals in the frequency range from 40 to 200 MHz show different electrical properties compared to conventional overtone quartz crystals in the same frequency range. They show lower electrical Q-values, different pullabilities and anharmonic modes as result of variations of the blank-electrode thickness ratio. We present the behaviour of anharmonic modes and C₀/C₁-ratios under various conditions using FEM methods, but also compare our results with experimental data of planoparallel crystals and inverted MESA-structured crystals, respectively

Keywords

crystal resonators; 40 to 200 Hz; FEM; HF fundamental mode resonators; Q-values; anharmonic modes; blank surface; blank-electrode thickness ratio; complex compensation; electrode properties; equivalent circuit; equivalent electrical data dependence; frequency shift; inverted MESA-structured crystals; planoparallel crystals; quartz resonators; vibration modes;

fLanguage

English

Publisher

iet

Conference_Titel

European Frequency and Time Forum, 1996. EFTF 96., Tenth (IEE Conf. Publ. 418)

Conference_Location

Brighton

ISSN

0537-9989

Print_ISBN

0-85296-661-X

Type

conf

DOI

10.1049/cp:19960002

Filename

583531