EN 60862-2:2002

SLOVENSKI SIST EN 60862-2:2003

STANDARD
oktober 2003
Surface acoustic wave (SAW) filters of assessed quality - Part 2: Guidance on use
(IEC 60862-2:2002)
ICS 31.160 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60862-2
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2002

ICS 31.140
English version
Surface acoustic wave (SAW) filters of assessed quality
Part 2: Guidance on use
(IEC 60862-2:2002)
Filtres à ondes acoustiques de surface Oberflächenwellenfilter (OFW-Filter)
(OAS) sous assurance de la qualité mit bewerteter Qualität
Partie 2: Guide d'utilisation Teil 2: Leitfaden für die Anwendung
(CEI 60862-2:2002) (IEC 60862-2:2002)

This European Standard was approved by CENELEC on 2002-09-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60862-2:2002 E
Foreword
The text of document 49/542/FDIS, future edition 2 of IEC 60862-2, prepared by IEC TC 49,
Piezoelectric and dielectric devices for frequency control and selection, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 60862-2 on 2002-09-01.

The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-06-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-09-01

Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60862-2:2002 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60862-2:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60368-2-1 1988 Piezoelectric filters - -
Part 2: Guide to the use of piezoelectric
filters
Section 1: Quartz crystal filters

IEC 60862 Series Surface acoustic wave (SAW) filters of - -
assessed quality
NORME CEI
INTERNATIONALE IEC
60862-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-05
Filtres à ondes acoustiques de surface (OAS)
sous assurance de la qualité –
Partie 2:
Guide d'utilisation
Surface acoustic wave (SAW) filters
of assessed quality –
Part 2:
Guidance on use
© IEC 2002 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
XA
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

60862-2 © IEC:2002 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11
1 Scope.13
2 Normative references .13
3 Terms and definitions .13
3.1 General terms .13
3.2 Response characteristics .19
3.3 SAW filter related terms .27
4 Preliminary remarks of a technical nature .27
5 Fundamentals of SAW transversal filters .29
5.1 Frequency response characteristics .29
5.2 Weighting methods.31
5.3 Filter configurations and their general characteristics .39
6 Fundamentals of SAW resonator filters.67
6.1 Classification of SAW resonator filters.67
6.2 Ladder and lattice filters .67
6.3 Coupled resonator filters .71
6.4 Interdigitated interdigital transducer (lIDT) resonator filters .89
7 Application guide.89
7.1 Substrate materials and their characteristics .89
7.2 Application to electronics circuits.99
7.3 Availability and limitations .101
7.4 Input levels.105
8 Practical remarks .107
8.1 Feed-through signals.107
8.2 Impedance matching condition .109
8.3 Miscellaneous .109
9 Ordering procedure .111
Figure 1 – Frequency response of a SAW filter .31
Figure 2 – Applicable range of frequency and relative bandwidth of the SAW filter and
the other filters .33
Figure 3 – Schematic diagram showing signal flow through a transversal filter.33
Figure 4 – Basic configuration of a SAW transversal filter .35
Figure 5 – Frequency response of the SAW transversal filter shown in figure 4, where
f is the centre frequency and N is the number of finger pairs of the IDT .35
Figure 6 – Apodization weighting obtained by apodizing fingers.37
Figure 7 – Withdrawal weighting obtained by selective withdrawal of the fingers.37
Figure 8 – Series weighting obtained by the dog-leg structure .37
Figure 9 – Split-finger (double electrode) configuration .39

60862-2 © IEC:2002 – 5 –
Figure 10 – Typical characteristics of a SAW IF filter for radio transmission equipment
(nominal frequency of 70,0 MHz) .45
Figure 11 – Typical characteristics of a frequency asymmetrical SAW filter (nominal
frequency of 58,75 MHz for TV-IF use) .47
Figure 12 – SAW three-IDT filter .47
Figure 13 – Typical frequency response of a 900 MHz range SAW filter for
communication (mobile telephone use) .49
Figure 14 – Schematic of the IIDT (multi-IDT) filter.49
Figure 15 – Multi-phase unidirectional transducer .51
Figure 16 – Single-phase unidirectional transducers .53
Figure 17 – Frequency characteristics of a filter using multi-phase unidirectional
transducers.55
Figure 18 – Frequency characteristics of a filter using single-phase unidirectional
transducers.55
Figure 19 – Various reflector filter configurations .59
Figure 20 – Z-path filter configuration .61
Figure 21 – Dual-track reflector filter configuration.61
Figure 22 – SPUDT-based dual-track filter .63
Figure 23 – Frequency characteristics of Z-path filter.63
Figure 24 – Frequency characteristics of dual-track reflector filter.65
Figure 25 – Frequency characteristics of SPUDT-based reflector filter.65
Figure 26 – Structure of ladder and lattice filters.73
Figure 27 – Equivalent circuit of basic section of ladder and lattice filter .75
Figure 28 – Pattern layout of ladder filter .75
Figure 29 – Basic concept of ladder and lattice filter .77
Figure 30 – Typical characteristics of a 1,5 GHz range ladder filter.79
Figure 31 – SAW energy distribution and equivalent circuit of transversely coupled
resonator filter .81
Figure 32 – Typical characteristics of a transversely coupled resonator filter .83
Figure 33 – Basic configuration and SAW energy distribution of longitudinally coupled
resonator filter .85
Figure 34 – Typical characteristics of a longitudinally coupled resonator filter.87
Figure 35 – Schematic of IIDT resonator filter .91
Figure 36 – Frequency characteristics of a 820 MHz range IIDT resonator filter.91
Figure 37 – Minimum theoretical conversion losses for various substrates .93
Figure 38 – Relationship between relative bandwidth and insertion attenuation for
various SAW filters, with the practical SAW filters’ bandwidth for their typical
applications .103
Figure 39 – Ripples in the characteristics of a SAW filter caused by TTE or feed-
through signal: įf = 1/(2t) for the TTE, and įf = 1/t for the feed-through, where t is the
delay of the SAW main signal .105
Table 1 – Properties of typical
...