Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of assessed quality - Part 2: Guidelines for the use

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.

Oberflächenwellen-(OFW-) und Volumenwellen-(BAW-)Duplexer mit bewerteter Qualität – Teil 2: Leitfaden für die Anwendung

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

L’IEC 62604-2:2017 concerne les duplexeurs qui peuvent séparer les signaux en réception des signaux en émission et constituent des composants essentiels pour les radiocommunications bilatérales. Ils sont généralement utilisés dans les systèmes de téléphonie mobile conformes aux systèmes CDMA comme les systèmes N-CDMA des systèmes de télécommunication mobile de seconde génération (2G), W-CDMA / UMTS (3G) ou LTE (4G). Cette édition comprend les modifications techniques majeures suivantes par rapport à l’édition précédente: - description des diplexeurs; - prise en compte des duplexeurs avec un accès RX symétrique dans le paragraphe relatif à la méthode de mesure (7.3). NOTE Dans la présente Norme, les duplexeurs à OAS et à OAV sont traités simultanément car ils sont utilisés de la même façon, en particulier dans les systèmes de téléphonie mobile, et présentent les mêmes exigences quant à leurs caractéristiques, leur méthode d’essai, etc.

Radiofrekvenčni (SAW) in visokofrekvenčni (BAW) duplekserji ocenjene kakovosti - 2. del: Smernice za uporabo (IEC 62604-2:2017)

Ta del standarda IEC 62604 zadeva dupleksorje, ki lahko ločijo sprejete signale od oddanih signalov in so ključni sestavni deli za dvosmerno radijsko komunikacijo ter se običajno uporabljajo v sistemih mobilnih telefonov, ki so skladni s sistemi CDMA, kot je N-CDMA v telekomunikacijskih mobilnih sistemih druge generacije (2G), W-CDMA / UMTS (3G) ali LTE (4G). Medtem ko se v sistemih 2G uporabljajo predvsem dielektrični dupleksorji, je tekoča miniaturizacija v mobilnih komunikacijskih sistemih 3G in 4G spodbudila razvoj in uporabo zvočnovalovnih dupleksorjev zaradi njihove majhnosti, lahkotnosti in dobre električne zmogljivosti. Standardni površinski zvočnovalovni (SAW) dupleksorji pa so se uporabljali za aplikacije z zmernimi zahtevami glede strmine posameznih filtrov, uporabe z ozko dupleksno vrzeljo (na primer, pasovi 2, 3, 8, 25), tj. frekvenčna vrzel med oddajnimi in sprejemnimi pasovi zahteva uporabo temperaturno kompenzirane tehnologije zvočnih valov (SAW) ali visokofrekvenčnih valov (BAW), zaradi boljših temperaturnih značilnosti in faktorjev Q resonatorja.
Cilj teh smernic ni pojasniti teorijo, niti poskusiti zajeti vse morebitne primere, do katerih lahko pride v praktičnih okoliščinah. Te smernice pozornost usmerjajo v nekatera bolj temeljna vprašanja, o katerih bi moral razmisliti uporabnik, preden se odloči za radiofrekvenčne ali visokofrekvenčne dupleksorje za novo aplikacijo. S tem se bo zavaroval pred nezadovoljivimi zmogljivostmi. Ker imajo radiofrekvenčni in visokofrekvenčni dupleksorji zelo podobne zmogljivosti za uporabo, je koristno in priročno za uporabnike, da sta oba dupleksorja opisana v enem standardu.
Standardne specifikacije, kot so specifikacije IEC, katerih del so tudi te smernice, in nacionalne specifikacije ali podrobne specifikacije, ki so jih izdali proizvajalci, opredeljujejo razpoložljive kombinacije srednje frekvence, pasovne širine za prepuščanje in vklopne izgube za vsak oddajni in sprejemni filter ter raven izolacije med oddajnimi in sprejemnimi vrati itd. Te specifikacije so sestavljene tako, da vključujejo širok obseg radiofrekvenčnih in visokofrekvenčnih dupleksorjev s standardiziranimi zmogljivostmi. Zelo pomembno je, da uporabnik, kadar je le mogoče, svoje dupleksorje izbere med temi specifikacijami, če so na voljo, čeprav bo zato moral nekoliko spremeniti tokokrog, da bo omogočil uporabo standardnih dupleksorjev. To velja zlasti za izbiro nazivne frekvence.

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SIST EN 62604-2:2012
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-
Ta slovenski standard je istoveten z: EN IEC 62604-2:2018
31.140 3LH]RHOHNWULþQHQDSUDYH Piezoelectric devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.


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 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)
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:
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
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
Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of

assessed quality –
Part 2: Guidelines for the use

ICS 31.140 ISBN 978-2-8322-5081-5

– 2 – IEC 62604-2:2017 © IEC 2017
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
Part 2: Guidelines for the use

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international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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5) IEC itself does not provide any attestation of conformity. Independent cer

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