1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPiezoelectric and dielectricdevices for frequencycontrol and selection Glossary Part 1: Piezoelectric anddielectric resonatorsDD IEC/TS 61994-1:2007National forewordThis Draft fo
2、r Development is the UK implementation of IEC/TS 61994-1:2007. It supersedes DD IEC/TS 61994-1:2003, which is withdrawn.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be app
3、lied on this provisional basis, so that information and experience of its practical application can be obtained.Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for its conversion to an inter
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5、of Update Standards.According to the replies received by the end of the review period, BSI Committee GEL/107 will decide whether to support the conversion into an international Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent to the Secretary of
6、BSI Technical Committee GEL/107 at British Standards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to Technical Committee GEL/107, Process management for avionics.A list of organizations represented on this committee can be obtained on request to
7、its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2007ISBN 978 0 580 56333 1ICS 01.040.31, 31.140Compliance with a British Standard cannot confer immunity from legal obligations.This Draft for
8、 Development was published under the authority of the Standards Policy and Strategy Committee on 30 November2007.Amendments issued since publicationAmd. No. Date Text affectedDRAFT FOR DEVELOPMENTDD IEC/TS 61994-1:2007IEC/TS 61994-1Edition 2.0 2007-08TECHNICAL SPECIFICATIONPiezoelectric and dielectr
9、ic devices for frequency control and selection Glossary Part 1: Piezoelectric and dielectric resonators IEC/TS61994-1:2007(E)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
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16、k on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TS 61994-1Edition 2.0 2007-08TECHNICAL SPECIFICATIONPiezoelectric and dielectric devices for frequency control and selection
17、 Glossary Part 1: Piezoelectric and dielectric resonators INTERNATIONAL ELECTROTECHNICAL COMMISSION SICS 31.140; 01.040.31 PRICE CODEISBN 2-8318-9298-8 2 TS 61994-1 IEC:2007(E) CONTENTS FOREWORD.3 1 Scope.5 2 Normative references .5 3 Terms and definitions .5 Figure 1 Configuration of a dielectric r
18、esonator (TE01mode type) .8 Figure 2 Equivalent circuit of a piezoelectric vibrator (one-port resonator) .9 Figure 3 Frequency characteristics of the impedance near resonance11 Figure 4 Equivalent circuit for a two-port SAW resonator .12 Figure 5 Configuration of an interdigital transducer (IDT) .13
19、 Figure 6 Configuration of a one port SAW resonator 16 Figure 7 Configuration of a two port SAW resonator.21 TS 61994-1 IEC:2007(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ PIEZOELECTRIC AND DIELECTRIC DEVICES FOR FREQUENCY CONTROL AND SELECTION GLOSSARY Part 1: Piezoelectric and dielectric res
20、onators FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardizatio
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29、drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall
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31、ained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. IEC 61994-1, which is a technical speci
32、fication, has been prepared by IEC technical committee 49: Piezoelectric and dielectric devices for frequency control and selection. This second edition of IEC 61994-1 cancels and replaces the first edition published in 2003. This edition constitutes a technical revision. The main changes with respe
33、ct to the previous edition are listed below: definitions updated; terminology given in orderly sequence; 4 TS 61994-1 IEC:2007(E) drawings inserted for easier understanding. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 49/761/DTS 49/766
34、/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the IS0/lEC Directives, Part 2. IEC 61994 consists of the following parts under the general tit
35、le: Piezoelectric and dielectric devices for frequency control and selection Glossary: Part 1: Piezoelectric and dielectric resonators Part 2: Piezoelectric and dielectric filters Part 3: Piezoelectric oscillators Part 4-1: Piezoelectric materials Synthetic quartz crystal Part 4-2: Piezoelectric and
36、 dielectric materials Piezoelectric ceramics Part 4-3: Materials for dielectric devices1 Part 4-4: Materials Materials for Surface Acoustic Wave (SAW) devices The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC
37、web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be transformed into an international standard; reconfirmed; withdrawn; replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a late
38、r date. _ 1To be published. TS 61994-1 IEC:2007(E) 5 PIEZOELECTRIC AND DIELECTRIC DEVICES FOR FREQUENCY CONTROL AND SELECTION GLOSSARY Part 1: Piezoelectric and dielectric resonators 1 Scope This technical specification gives the terms and definitions for piezoelectric and dielectric resonators repr
39、esenting the present state-of-the-art, which are intended for use in the standards and documents of IEC technical committee 49. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For
40、undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050(561):1991, International Electrotechnical Vocabulary (IEV) Chapter 561: Piezoelectric devices for frequency control and selection Amendment 1 (1995) IEC 60122-1:2002, Quarts crystal units
41、of assessed quality Part-1: Generic specification IEC 60642:1979, Piezoelectric ceramic resonators and resonator units for frequency control and selection Chapter I: Standard values and conditions Chapter II: Measuring and test conditions IEC 61019-1:2004, Surface acoustic wave (SAW) resonators Part
42、 1: Generic specification IEC 61338-1:2004, Waveguide type dielectric resonators Part 1: Generic specification 3 Terms and definitions 3.1 adjustment tolerance the maximum permissible deviation of the working frequency of a piezoelectric resonator from the nominal frequency at the reference temperat
43、ure under specified conditions IEV 561-02-16 modified 3.2 ageing tolerance the maximum permissible deviation of the working frequency of a piezoelectric resonator from its initial frequency which is observed with the passage of time under specified conditions IEV 561-02-17 modified 3.3 ageing long-t
44、erm parameter variation relationship which exists between any parameter (for example resonance frequency) and time IEC 61019-1, 4.2.9 3.4 apodisation (spurious suppression for SAW devices) weighting method produced by the change in finger overlap over the length of the IDT to suppress the transverse
45、 spurious modes 6 TS 61994-1 IEC:2007(E) IEV 561-06-18 modified 3.5 anti-resonance frequency af the higher of two frequencies of a piezoelectric resonator vibrating alone, under specified conditions, at which the electrical impedance of the resonator is resistive IEV 561-02-10 3.6 bus bar common ele
46、ctrode region of an IDT which connects individual fingers together and also connects the IDT to an external circuit (see Figure 5) IEV 561-06-15 modified 3.7 capacitance ratio 10CCr = where 0C and 1C represent the shunt capacitance and the motional capacitance respectively in the equivalent circuit
47、(see Figure 2) the capacitance ratio indicates one of the merits of the resonator IEC 61019-1, 4.2.10.9 modified 3.8 centre frequency of a two-port SAW resonator cf arithmetic mean of two frequencies at which the attenuation relative to the minimum insertion attenuation reaches a specified value IEC
48、 61019-1, 4.2.11.9 3.9 clamped capacitance (of a piezoelectric resonator) the capacitance of a piezoelectric resonator measured at a frequency well above any pronounced resonance NOTE In practice, the value of the capacitance is often indirectly determined, because a direct measurement is affected b
49、y the presence of factors such as lead inductance. IEV 561-02-35 3.10 coaxial dielectric resonator dielectric resonator characterized by a TEM mode field distribution with a coaxial waveguide structure of finite length IEC 61338-1, 2.2.19 TS 61994-1 IEC:2007(E) 7 3.11 coplanar resonator dielectric resonator characterised by a TEM mode field distribution. The structure is a coplanar-line wave
