IEC 62604-2:2011

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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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.
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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