08-30192315-DC.pdf
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1、a Date: 22 December 2008 Origin: European Latest date for receipt of comments: 28 February 2009 Project no.: 2008/03585 Responsible committee: EPL/49 Piezoelectric devices for frequency control and selection Interested committees: Title: Draft BS EN 62604-2 Surface Acoustic Wave (SAW) and Bulk Acous
2、tic Wave (BAW) dupliexers - Part 2: guide to the use Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary
3、 (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 28 February 2009. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgem
4、ent will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electro
5、nic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email . British, International and foreign standards are also available from BSI Customer Serv
6、ices. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the Br
7、itish Standards Online Service on the BSI web site http:/. Direct tel: 020 8996 7009 Responsible Committee Secretary: Committee Service Centre (BSI) E-mail: Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Versio
8、n 8.0 DPC: 08/30192315 DC Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:38, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on European discussions in which the UK took an active part. Your comments on this draft are welcome and will assist
9、in the preparation of the consequent British Standard. Comment is particularly welcome on national legislative or similar deviations that may be necessary. Even if this draft standard is not approved by the UK, if it receives the necessary support in Europe, the UK will be obliged to publish the off
10、icial English Language text unchanged as a British Standard and to withdraw any conflicting standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comment
11、s receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be comp
12、atible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example bel
13、ow. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/ Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ A
14、nnex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains
15、 connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of M
16、icrosoft Corporation. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:38, Uncontrolled Copy, (c) BSI 49/832/CD COMMITTEE DRAFT (CD) IEC/TC or SC: TC49 Project number IEC 62604-2, Ed.1 Title of TC/SC: Piezoelectric and dielectric devices for frequency control and sel
17、ection Date of circulation 2008-12-19 Closing date for comments 2009-03-20 Also of interest to the following committees Supersedes document 49/803/NP, 49/813/RVN Functions concerned: Safety EMC Environment Quality assurance Secretary: Dr. Toshihiro KOJIMA THIS DOCUMENT IS STILL UNDER STUDY AND SUBJE
18、CT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Title: IEC 62604-2, Ed. 1: Surface Acoustic Wave (SAW) and B
19、ulk Acoustic Wave (BAW) duplexers - Part 2 : Guide to the use (Titre) : Introductory note The document 49/803/NP was circulated on 2008-05-23. As the result of voting, it was approved with 4 experts in 49/813/RVN on 2008-10-24. The document is the new project of WG10, and it will be very important a
20、nd useful for the mobile communication such as mobile phone. It was prepared by Japanese National Committee of WG10, and the project leader is Mr. Yasushi Yamamoto who is assistant Secretary of TC49. FORM CD (IEC) 2002-08-08 Copyright 2008 International Electrotechnical Commission, IEC. All rights r
21、eserved. It is permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission
22、 in writing from IEC. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:38, Uncontrolled Copy, (c) BSI 62604-2, Ed. 1 IEC:2008 2 49/832/CD SURFACE ACOUSTIC WAVE (SAW) and BULK ACOUSTIC WAVE (BAW) DUPLEXERS Part 2: Guide to the use 1 Scope Duplexers, which can separate
23、 receiving signal from transmitting signal and are key components for two-way radio communications, 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
24、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
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