AN4305 Datasheet, PDF (1/20 Pages) STMicroelectronics – Using the SPIRIT1 transceiver with range extender

AN4305
Application note
Using the SPIRIT1 transceiver with range extender
under EN 300 220 at 169 MHz
Placido De Vita
Introduction
The SPIRIT1 is a very low power RF transceiver, intended for RF wireless applications in
the sub-1 GHz band. It is designed to operate both in the license-free ISM and SRD
frequency bands at 169, 315, 433, 868 and 915 MHz.
This application note outlines the expected performance when using the SPIRIT1 with a
range extender under EN 300 220-1 (v2.3.1, 2012-02) [2.] in the 169.400 - 169.475 MHz
band, meter reading, tracking and tracing applications. The maximum allowed output power
in this sub-band is +27 dBm (500 mW), this application note relates to an application
designed to reach the maximum permitted power, while respecting ETSI requirements.
This application note also relates to CEN/TC 294 prEN 13757-4:2011.10 [4.] requirements
for the W-MBUS N-mode standard in the 169.400 - 169.475 MHz band.
For details on the regulatory limits in the 169.400 - 169.475 MHz SRD frequency bands,
please refer to the ETSI EN 300 220-1 v2.3.1 [2.] and ERC Recommendation 70-03 [3.].
These can be downloaded from www.etsi.org and www.ero.dk.
October 2013
DocID024733 Rev 1
1/20
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