m o .c U 4 t e e h S a at .D w w w
IA ISM-AN6
m o .c U 4 t e e Antenna Selection Guide for the h S IA4420 ISM Band FSK Transceiver a t a Application Note D . w w m w o .c
Version 1.0r - PRELIMINARY
IA ISM-AN6 Rev 1.0r 1205
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©2005, Integration Associates, Inc.
Integration Associates, Inc. 110 Pioneer Way, Unit L Mountain View, California 94041 Tel: 650.969.4100 Fax: 650.969.4582 www.integration.com
[email protected] [email protected] Application Note: Antenna Selection Guide for the IA4420 ISM Band FSK Transceiver Version 1.0r - Preliminary Revision Date: December 15, 2005
The information is provided “as is” without any express or implied warranty of any kind, including warranties of merchantability, non-infringement of intellectual property, or fitness for any particular purpose. In no event shall Integration Associates, Inc., or its suppliers be liable for any damages whatsoever arising out of the use of or an inability to use the materials. Integration Associates, Inc., and its suppliers further do not warrant the accuracy or completeness of the information, text, graphics, or other items contained within these materials. Integration Associates, Inc., may make changes to these materials, or to the products described w/ithin, at any time, without notice. © 2005 Integration Associates, Inc. All rights reserved. Integration Associates is a trademark of Integration Associates, Inc. All trademarks belong to their respective owners.
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ABOUT THIS GUIDE
The antenna selection guide for the IA4420 ISM Band FSK Transceiver is designed to give product designers a quick time-to-market approach for on-board antenna selection. The guide is designed to address geographic regulations covering the standard ISM FSK band frequencies; 315MHz, 434MHz, 868MHz, and 915MHz and to address the approximate range-versus-bandwidth to given antenna pairs. For further information on the devices used in this publication, see the following datasheets: IA4420 Universal ISM Band Transceiver datasheet: IA4420-DS
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TABLE OF CONTENTS
About this Guide........................................................................................................................................................................................ 2 Introduction............................................................................................................................................................................................... 5 DESCRIPTION.........................................................................................................................................................................................5 1. Antenna Pairs and Ranges................................................................................................................................................................... 6 U.S. REGULATIONS: 915MHZ, 434MHZ...............................................................................................................................................7 Table 1.1 Free space range [m] in the 915 MHz U.S. unlicensed band.....................................................................................7 Table 1.2 Free space range [m] in the 434 MHz U.S. unlicensed band......................................................................................8 EUROPEAN ETSI REGULATIONS: 868MHZ AND 434MHZ ...................................................................................................................9 Table 1.3 Free space range [m] in the 915 MHz European unlicensed band ............................................................................9 Table 1.4 Free space range [m] in the 434 MHz European unlicensed band ......................................................................... 10 BER VS. RANGE CURVES FOR THE U.S. 915MHZ BAND................................................................................................................... 11 Fig. 1.1........................................................................................................................................................................................... 11 Fig. 1.2........................................................................................................................................................................................... 11 Fig. 1.3........................................................................................................................................................................................... 12 Fig. 1.4........................................................................................................................................................................................... 13 Fig. 1.5........................................................................................................................................................................................... 13 Fig. 1.6...