EN IEC 62604-2:2018

SLOVENSKI STANDARD
01-maj-2018
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Surface Acoustic Wave (SAW) and Bulk Acoustic Wave (BAW) duplexers of assessed
quality - Part 2: Guidelines for the use (IEC 62604-2:2017)
Oberflächenwellen-(OFW-) und Volumenwellen-(BAW-)Duplexer mit bewerteter Qualität
– Teil 2: Leitfaden für die Anwendung (IEC 62604-2:2017)
Duplexeurs à ondes acoustiques de surface (OAS) et à ondes acoustiques de volume
(OAV) sous assurance de la qualité - Partie 2: Lignes directrices d'utilisation (IEC 62604-
2:2017)
Ta slovenski standard je istoveten z: EN IEC 62604-2:2018
ICS:
31.140 3LH]RHOHNWULþQHQDSUDYH Piezoelectric devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62604-2

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 31.140 Supersedes EN 62604-2:2012
English Version
Surface acoustic wave (SAW) and bulk acoustic wave (BAW)
duplexers of assessed quality - Part 2: Guidelines for the use
(IEC 62604-2:2017)
Duplexeurs à ondes acoustiques de surface (OAS) et à Oberflächenwellen-(OFW-) und Volumenwellen-(BAW-)
ondes acoustiques de volume (OAV) sous assurance de la Duplexer mit bewerteter Qualität - Teil 2: Leitfaden für die
qualité - Partie 2: Lignes directrices d'utilisation Anwendung
(IEC 62604-2:2017) (IEC 62604-2:2017)
This European Standard was approved by CENELEC on 2018-01-03. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62604-2:2018 E

European foreword
The text of document 49/1217/CDV, future edition 2 of IEC 62604-2, prepared by IEC/TC 49
"Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control,
selection and detection" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 62604-2:2018.

The following dates are fixed:
• latest date by which the document has to be (dop) 2018-10-03
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2021-01-03
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 62604-2:2012.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 62604-2:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60862-2:2012 NOTE Harmonized as EN 60862-2:2012 (not modified).
IEC 61019-1:2004 NOTE Harmonized as EN 61019-1:2005 (not modified).
IEC 61019-2:2005 NOTE Harmonized as EN 61019-2:2005 (not modified).
IEC 62047-7:2011 NOTE Harmonized as EN 62047-7:2011 (not modified).
IEC 62575-2:2012 NOTE Harmonized as EN 62575-2:2012 (not modified).

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60862-1 2015 Surface acoustic wave (SAW) filters of EN 60862-1 2015
assessed quality - Part 1: Generic
specification
IEC 62575-1 2015 Radio frequncy (RF) bulk acoustic wave EN 62575-1 2016
(BAW) filters of assessed quality - Part 1:
Generic specification
IEC 62604-2 ®
Edition 2.0 2017-11
INTERNATIONAL
STANDARD
colour
inside
Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of

assessed quality –
Part 2: Guidelines for the use

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.140 ISBN 978-2-8322-5081-5

– 2 – IEC 62604-2:2017 © IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Technical considerations . 7
5 Fundamentals of SAW and BAW duplexers. 7
5.1 Basic function . 7
5.1.1 General . 7
5.1.2 TX filter response (filter response from TX port to antenna port) . 8
5.1.3 RX filter response (filter response from antenna port to RX port) . 9
5.1.4 Isolation (isolation from TX port to RX port) . 9
5.2 Basic structure . 10
5.3 Principle of operation . 10
5.4 Diplexer . 14
6 SAW and BAW duplexer characteristics . 14
6.1 General conditions for SAW and BAW duplexers . 14
6.2 Typical characteristics of SAW and BAW duplexers . 16
6.2.1 UMTS duplexer . 16
6.2.2 US CDMA duplexer . 17
6.2.3 PCS CDMA duplexer . 17
7 Application guidelines . 21
7.1 Power durability . 21
7.2 Harmonics and inter-modulation distortion . 21
7.3 Measurement method for the duplexer . 21
7.4 Electrostatic voltage protection . 23
Bibliography . 24

Figure 1 – Basic duplexer configuration . 8
Figure 2 – Basic TX filter response example of SAW and BAW duplexers . 9
Figure 3 – Basic RX filter response example of SAW and BAW duplexers . 9
Figure 4 – Basic isolation characteristics example of SAW and BAW duplexers . 10
Figure 5 – The block diagram of a duplexer . 11
Figure 6 – Demanded condition of TX part for duplexers . 12
Figure 7 – Phase rotation in TX part . 13
Figure 8 – Demanded condition of RX part for duplexers . 13
Figure 9 – Basic diplexer configuration . 14
Figure 10 – Typical wide range frequency response of TX filter . 15
Figure 11 – Typical wide range frequency response of RX filter for upper local system . 15
Figure 12 – Phase shifter by microstrip line on the surface of a ceramic package . 16
Figure 13 – Lumped element phase shifter . 16
Figure 14 – Duplexer configuration . 16
Figure 15 – Frequency characteristics of SAW duplexer for UMTS Band 1 system . 18
Figure 16 – Frequency characteristics of a SAW duplexer for US CDMA system . 19
)
Figure 17 – Frequency characteristics of BAW duplexer for PCS CDMA system . 20

IEC 62604-2:2017 © IEC 2017 – 3 –
Figure 18 – Four-port-type network analyzer for duplexer measurement . 22
Figure 19 – Four-port-type network analyzer for measurement of a balanced RX port
duplexer. 23

Table 1 – Frequency allocation for typical LTE frequency division duplex (FDD) bands . 8

– 4 – IEC 62604-2:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE ACOUSTIC WAVE (SAW) AND BULK
ACOUSTIC WAVE (BAW) DUPLEXERS
OF ASSESSED QUALITY –
Part 2: Guidelines for the use

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 standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is 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 not be held responsible for identifying any or all such patent rights.
International Standard IEC 62604-2 has been prepared by IEC technical committee 49:
Piezoelectric, dielectric and electrostatic devices and associated materials for frequency
control, selection and detection.
This second edition cancels and replaces the first edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• diplexers are described;
• duplexers with a balanced RX port are considered in the measurement method subclause
(7.3).
IEC 62604-2:2017 © IEC 2017 – 5 –
NOTE In this standard, SAW and BAW duplexers are treated simultaneously because both duplexers are used in
the same manner especially in mobile phone systems and have same requirements of characteristics, test method
and so on.
The text of this International Standard is based on the following documents:
CDV Report on voting
49/1217/CDV 49/1251/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62604 series, published under the general title Surface acoustic
wave (SAW) and bulk acoustic wave (BAW) duplexers of assessed quality, can be found on
the IEC website.
A bilingual version of this publication may be issued at a later date.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62604-2:2017 © IEC 2017
SURFACE ACOUSTIC WAVE (SAW) AND BULK
ACOUSTIC WAVE (BAW) DUPLEXERS
OF ASSESSED QUALITY –
Part 2: Guidelines for the use

1 Scope
This part of IEC 62604 concerns duplexers which can separate receiving signals from
transmitting signals and are key components for two-way radio communications, and which
are generally used in mobile phone systems compliant with CDMA systems such as N-CDMA
in second generation mobile telecommunication systems (2G), W-CDMA / UMTS (3G) or
LTE (4G). While in 2G systems mainly dielectric duplexers have been used, the ongoing
miniaturization in 3G and 4G mobile communication systems promoted the development and
application of acoustic wave duplexers due to their small size, light weight and good electrical
performance. While standard surface acoustic wave (SAW) duplexers have been employed for
applications with moderate requirements regarding the steepness of individual filters,
applications with narrow duplex gap (e.g. Bands 2, 3, 8, 25), i.e. the frequency gap between
receiving and transmitting bands, require the application of temperature-compensated (TC)
SAW or bulk acoustic wave (BAW) technology, because of their better temperature
characteristics and resonator Q-factors.
It is neither the aim of these guidelines to explain theory, nor to attempt to cover all the
eventualities which may arise in practical circumstances. These guidelines draw attention to
some of the more fundamental questions, which should be considered by the user before he
places an order for SAW and BAW duplexers for a new application. Such a procedure will be
the user’s insurance against unsatisfactory performance. Because SAW and BAW duplexers
have very similar performance for the usage, it is useful and convenient for users that both
duplexers are described in one standard.
Standard specifications, such as those of IEC, of which these guidelines form a part, and
national specifications or detail specifications issued by manufacturers will define the
available combinations of centre frequency, pass bandwidth and insertion attenuation for each
sort of transmitting and receiving filters and the isolation level between transmitter and
receiver ports, etc. These specifications are compiled to include a wide range of SAW and
BAW duplexers with standardized performances. It cannot be over-emphasized that the user
should, wherever possible, select his duplexers from these specifications, when available,
even if it may lead to making small modifications to his circuit to enable the use of standard
duplexers. This applies particularly to the selection of the nominal frequency band.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 60862-1:2015, Surface acoustic wave (SAW) filters of assessed quality – Part 1: Generic
specification
IEC 62575-1:2015, Radio frequency (RF) bulk acoustic wave (BAW) filters of assessed quality
– Part 1: Generic specification

IEC 62604-2:2017 © IEC 2017 – 7 –
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Technical considerations
It is of prime interest to a user that the duplexer characteristics should satisfy particular
specifications. The selection of the front-end circuits in user equipments and SAW and BAW
duplexers to meet such specifications should be a matter of agreement between the user and
the manufacturer.
Duplexer characteristics are usually expressed in terms of centre frequency, pass bandwidth
and insertion attenuation for each of transmitting and receiving filter parts in the duplexer and
isolation level between the transmitter and receiver ports. Since the SAW and BAW duplexer
is used in RF front-end of the user equipments, lower insertion attenuation, higher
isolation/rejection level, stronger power durability and smaller/thinner package dimensions are
strictly required.
5 Fundamentals of SAW and BAW duplexers
5.1 Basic function
5.1.1 General
Duplexers are necessary for frequency division duplex (FDD) equipments to receive and
transmit signals simultaneously. Duplexers are 3-port devices which consist of an antenna
port, a transmitter port (TX port) and a receiver port (RX port), as shown in Figure 1. The
duplexer has three basic functions;
– to transfer the transmitting signal from the TX port to the antenna port;
– to transfer the receiving signal from the antenna port to the RX port;
– to prevent transfer of the transmitting signal and noise from the TX port to the RX port.
The transmitting and the receiving frequencies are determined corresponding to each mobile
communication system. For example, Table 1 shows typical allocated frequency bands for
UMTS.
– 8 – IEC 62604-2:2017 © IEC 2017
RX signal
Antenna
RX port
...