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IA4420 데이터시트 PDF




Interation에서 제조한 전자 부품 IA4420은 전자 산업 및 응용 분야에서
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부품번호 IA4420 기능
기능 ISM Band FSK Transceiver
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IA4420 데이터시트, 핀배열, 회로
www.DataSheet4U.com
IA ISM-AN6
heet4U.comAntenna Selection Guide for the
SIA4420 ISM Band FSK Transceiver
ata Application Note
.D Version 1.0r - PRELIMINARY
wwwIA ISM-AN6 Rev 1.0r 1205
www.DataSheet4U.com©2005, Integration Associates, Inc.




IA4420 pdf, 반도체, 판매, 대치품
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........................................................................................................................................................................................... 14
Fig. 1.7........................................................................................................................................................................................... 15
Fig. 1.8........................................................................................................................................................................................... 15
Fig. 1.9........................................................................................................................................................................................... 16
BER VS. RANGE CURVE FOR THE U.S. 434MHZ BAND..................................................................................................................... 17
Fig. 10............................................................................................................................................................................................ 17
BER VS. RANGE CURVES FOR THE E.U. 868MHZ BAND................................................................................................................... 18
Fig. 1.11. ....................................................................................................................................................................................... 18
Fig. 1.12. ....................................................................................................................................................................................... 18
Fig. 1.13. ....................................................................................................................................................................................... 19
Fig. 1.14. ....................................................................................................................................................................................... 20
Fig. 1.15. ....................................................................................................................................................................................... 20
Fig. 1.16 ........................................................................................................................................................................................ 21
Fig. 1.17. ....................................................................................................................................................................................... 22
Fig. 1.18. ....................................................................................................................................................................................... 22
Fig. 1.19. ....................................................................................................................................................................................... 23
BER VS. RANGE CURVES FOR THE E.U. 434MHZ BAND................................................................................................................... 24
Fig. 1.20. ....................................................................................................................................................................................... 24
3

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IA4420 전자부품, 판매, 대치품
1. ANTENNA PAIRS AND RANGES
The range is estimated from the measured EIRP (Equivalent Isotropic Radiated Power) and sensitivity of the transmitter and the
receiver with the different antennas, respectively. The definition of EIRP is given in Appendix A. During the range calculations, ideal
free space propagation conditions were assumed with a propagation exponent of 2 and the formulas given in Appendix B of the IA-
ISM-AN-1 document. The real ranges (indoor or outdoor) can be estimated from this data using the calculation method of Appendix E
of the IA-ISM-AN-1 document. The reference distance (d0) during the measurements was 2m (see Appendix C of the IA-ISM-AN1
document for details).
The given range corresponds to a transmitter (TX) with two-sided FSK deviation of 120 kHz (with data rate of 9600 bps) and 180 kHz
(with data rate of 57400 bps). The receiver (RX) baseband filter bandwidth was adjusted to 135 kHz. The EIRP data at TX mode and
the sensitivity data (electric field strength) at RX mode in case of 10-2, 10-3, 10-4 and 10-5 BER with the different antennas are
given in detail in Appendix A.
The receiver sensitivity was measured in the presence of strong interference (GSM, TV etc.) signals with frequencies close to the
used bands (for details see Appendix D of the IA-ISM-AN1 document). The electric field of the interference signals around 900 MHz
during the sensitivity measurements were between 60 and 80 mV/m; it is approx. 40-50 dB higher than the useful signal’s electric
field. As the receiver sensitivity is approx. 6-8 dB better in an interference-free environment (i.e., if a narrow band saw filter is used at
the receiver input), the distance is about 2 times higher in that circumstance.
In the following tables the typical range to achieve a BER (Bit Error Rate) of 10-2 in the case of various transmitter-receiver antenna
pairs, is presented for 9600 and 57450 bps data rate at each frequency.
After the tables, the available free space ranges are given at several BER values (i.e. the BER vs. range curves) for different
transmitter-receiver antenna pairs for 9600 and 57450 bps data rates at each frequency.
The antenna layouts together with the antenna dimensions are given in chapter 2.
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IA4420

ISM Band FSK Transceiver

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