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BS EN IEC 62604-2:2022

BS EN IEC 62604-2:2022

$167.15

Surface acoustic wave (SAW) and bulk acoustic wave (BAW) duplexers of assessed quality – Guidelines for the use

Published By Publication Date Number of Pages
BSI 2022 34
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IEC 62604-2:2022 is available as IEC 62604-2:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62604-2:2022 applies to 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). These guidelines draw attention to some fundamental questions about the theory of SAW and BAW duplexers and how to use them, which will 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. This edition includes the following significant technical changes with respect to the previous edition: – the term “cross-isolation” has been added to Clause 3; – multiplexers are described. NOTE In this document, SAW and BAW duplexers are treated simultaneously because both duplexers are used in the same manner, especially in mobile phone systems and have the same requirements of characteristics, test method and so on.

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PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
8 Blank Page
9 English
CONTENTS
11 FOREWORD
13 INTRODUCTION
14 1 Scope
2 Normative references
3 Terms and definitions
3.1 Response characteristics related terms
15 3.2 SAW and BAW duplexers related terms
4 Technical considerations
5 Fundamentals of SAW and BAW duplexers
5.1 Basic function
5.1.1 General
16 5.1.2 TX filter response (filter response from TX port to antenna port)
Figures
Figure 1 – Basic duplexer configuration
Tables
Table 1 – Frequency allocation for typical LTE frequency division duplex (FDD) bands
17 5.1.3 RX filter response (filter response from antenna port to RX port)
5.1.4 Isolation (isolation from TX port to RX port)
Figure 2 – Basic TX filter response example of SAW and BAW duplexers
Figure 3 – Basic RX filter response example of SAW and BAW duplexers
18 5.2 Basic structure
5.3 Principle of operation
Figure 4 – Basic isolation characteristics example of SAW and BAW duplexers
19 Figure 5 – The block diagram of a duplexer
20 Figure 6 – Demanded condition of TX part for duplexers
Figure 7 – Phase rotation in TX part
21 5.4 Diplexer
Figure 8 – Demanded condition of RX part for duplexers
Figure 9 – Basic diplexer configuration
22 5.5 Multiplexer
6 SAW and BAW duplexer characteristics
6.1 General conditions for SAW and BAW duplexers
Figure 10 – Basic multiplexer configuration
23 Figure 11 – Typical wide range frequency response of TX filter
24 Figure 12 – Typical wide range frequency response of RX filter for upper local system
Figure 13 – Phase shifter by microstrip line on the surface of a ceramic package
Figure 14 – Lumped element phase shifter
25 6.2 Typical characteristics of SAW and BAW duplexers
6.2.1 UMTS duplexer
6.2.2 US CDMA duplexer
6.2.3 PCS CDMA duplexer
Figure 15 – Duplexer configuration
26 6.2.4 LTE Band 1 + Band 3 multiplexer
27 Figure 16 – Frequency characteristics of SAW duplexer for UMTS Band 1 system
28 Figure 17 – Frequency characteristics of a SAW duplexer for US CDMA system
29 Figure 18 – Frequency characteristics of BAW duplexer for PCS CDMA system
30 7 Application guidelines
7.1 Power durability
7.2 Harmonics and inter-modulation distortion
7.3 Measurement method for the duplexer
Figure 19 – Frequency characteristics of SAW Band 1 + Band 3 multiplexer for LTE
31 Figure 20 – Four-port-type network analyzer for duplexer measurement
32 7.4 Electrostatic voltage protection
Figure 21 – Four-port-type network analyzer for measurement ofa balanced RX port duplexer
33 Bibliography

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BS EN IEC 62604-2:2022
$167.15