IEC 62604-2:2011

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

IEC 62604-2:2011 concerns the duplexers, which can separate receiving signal from transmitting signal and are key components for two-way radio communications. They are generally used in mobile phones using CDMA systems such as N-CDMA, W-CDMA / Universal Mobile Telecommunication System (UMTS). So far, dielectric duplexers have been mainly used. However, recently SAW duplexers, which are utilized surface acoustic wave (SAW), are becoming popular and replacing the dielectric duplexers year by year in recent mobile phones, because of their advantage of small size, light weight and good electrical performances. In addition to SAW duplexers, BAW duplexers, which are utilized bulk acoustic wave (BAW), are also becoming in the spotlight and popular because of their higher Q property and better performances especially in PCS band. 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.

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

La CEI 62604-2:2011 concerne les duplexeurs qui peuvent séparer les signaux en réception des signaux en émission et qui sont des composants essentiels pour les radiocommunications bilatérales. Ils sont généralement utilisés dans les téléphones mobiles qui utilisent les systèmes CDMA comme les systèmes N-CDMA, W-CDMA / Universal Mobile Telecommunication System (UMTS). Jusqu'à présent, les duplexeurs diélectriques étaient majoritairement utilisés. Toutefois, au cours de la période récente, les duplexeurs OAS qui utilisent des ondes acoustiques de surface (OAS) se répandent et au fil des années ils remplacent les duplexeurs diélectriques dans les téléphones mobiles récents car ils présentent les avantages suivants: petites dimensions, faible poids et bonnes performances électriques. A côté des duplexeurs OAS, les duplexeurs OAV qui utilisent les ondes acoustiques de volume (OAV) sont de plus en plus connus et appréciés en raison de leur propriété Q plus élevée et de leurs meilleures performances en particulier dans la bande PCS. Les présentes lignes directrices ne sont pas destinées à expliquer la théorie de ces duplexeurs ni à couvrir toutes les situations qui peuvent apparaître dans la pratique. Elles attirent l'attention sur certains des aspects les plus importants qu'il convient qu'un utilisateur prenne en compte avant de passer commande pour des duplexeurs OAS et OAV pour une nouvelle application. Ainsi, l'utilisateur évitera d'être confronté à des performances non satisfaisantes. Dans la mesure où les duplexeurs OAS et les duplexeurs OAV présentent des performances très similaires dans leur utilisation, il est utile et pratique pour les utilisateurs que les deux types soient décrits dans une seule norme.

General Information

• Status: Published
• Publication Date: 27-Nov-2011
• ICS: 17.140.20 - Noise emitted by machines and equipment
• ICS: 31.140 - Piezoelectric devices
• ICS: 97.100.10 - Electric heaters
• Technical Committee: TC 49 - Piezoelectric, dielectric and electrostatic devices and associated materials for frequency control, selection and detection
• Drafting Committee: WG 10 - TC 49/WG 10
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 29-Nov-2017

Relations

• Revised: IEC 62604-2:2017 - Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of assessed quality - Part 2: Guidelines for the use
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62604-2 ®
Edition 1.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of
assessed quality –
Part 2: Guidelines for the use

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

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IEC 62604-2 ®
Edition 1.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of
assessed quality –
Part 2: Guidelines for the use

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

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 31.140 ISBN 978-2-88912-712-2

– 2 – 62604-2  IEC:2011
CONTENTS
FOREWORD . 3

1 Scope . 5

2 Normative references . 5

3 Technical considerations . 6

4 Fundamentals of SAW and BAW duplexers . 6

4.1 Basic function . 6

4.1.1 TX filter response (Filter response from TX port to antenna port) . 7

4.1.2 RX filter response (Filter response from antenna port to RX port) . 7
4.1.3 Isolation (Isolation from TX port to RX port) . 7
4.2 Basic structure . 8
4.3 Principle of operation . 9
5 SAW and BAW duplexer characteristics. 11
5.1 General conditions for SAW and BAW duplexers . 11
5.2 Typical characteristics of SAW and BAW duplexer . 14
5.2.1 UMTS Duplexer . 14
5.2.2 US CDMA Duplexer . 14
5.2.3 PCS CDMA Duplexer . 14
6 Application Guide . 18
6.1 Power durability . 18
6.2 Inter-modulation . 18
6.3 Measurement method for the duplexer. 18
6.4 Static electricity . 19
Bibliography . 20

Figure 1 – Basic duplexer configuration . 6
Figure 2 – Basic TX filter response example of SAW and BAW duplexers . 7
Figure 3 – Basic RX filter response example of SAW and BAW duplexers . 8
Figure 4 – Basic isolation response example of SAW and BAW duplexers . 8
Figure 5 – The block diagram of duplexer . 9
Figure 6 – The demanded condition of TX part for duplexers . 10
Figure 7 – Phase rotation in TX part . 10

Figure 8 – The demanded condition of RX part for duplexers . 11
Figure 9 – Typical wide range frequency response of TX filter . 12
Figure 10 – Typical wide range frequency response of RX filter for upper local system . 13
Figure 11 – Phase shifter by micro-strip line on the surface of a ceramic package . 13
Figure 12 – Lumped element phase shifter . 13
Figure 13 – Duplexer configuration . 13
Figure 14 – Frequency characteristics of SAW Duplexer for UMTS system . 15
Figure 15 – Frequency characteristics of SAW Duplexer for US CDMA system . 16
)
Figure 16 – Frequency characteristics of BAW Duplexer for PCS CDMA system . 17
Figure 17 – 4 port network analyzer . 19

Table 1 – Frequency allocation of typical UMTS bands . 7

62604-2  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
SURFACE ACOUSTIC WAVE (SAW) AND

BULK ACOUSTIC WAVE (BAW) DUPLEXERS

OF ASSESSED QUALITY –
Part 2: Guidelines for the use

FOREWORD
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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.
NOTE In this standard, SAW and BAW duplexers are treated simultaneously because both duplexers are used in
the same manner especially in mobile phones and have same requirements of characteristics, test method and so
on.
The text of this standard is based on the following documents:
FDIS Report on voting
49/974/FDIS 49/985A/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

– 4 – 62604-2  IEC:2011
This publication has been drafted in accordance with the ISO/IEC Directiv
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