WIRELESS CONNECTIVITY & SENSORS
ANR022 - Radio module cross migration guide
1 Introduction
The radio frequency spectrum is regulated by designated regulatory authorities that define how
specific spectrum bands can be used. As each frequency band has its strength, Würth Elek-
tronik eiSos provides for each frequency band proprietary and standardized radio modules,
which allow the user to decide the best module for the end application. The most common
characteristics to choose radio modules are frequency, energy efficiency, data transmission
rate and transmission protocols.
With the evolution of radio chips, new proprietary and standardized radio modules have been
developed, that are more energy efficient during data transmission and reception. Further-
more new coding and modulation techniques have been added, that allow higher transmission
ranges (long range mode) and/or higher data rates.
Due to the worldwide operation the interest of using the 2.4 GHz frequency band increases.
This application note describes an adapter board, that is used to place a 2.4 GHz Thyone-I
radio module on the footprint of a Tarvos-III/Telesto-III/Thebe-II/Themisto-I radio module.
Furthermore, the steps for hardware and firmware integration to replace an existing Tarvos-
III/Telesto-III/Thebe-II/Themisto-I radio module by a Thyone-I radio module are described.
For reasons of simplicity, in the whole document we use the term sub-GHz pro-
prietary module instead of listing the modules Tarvos-III, Telesto-III, Thebe-II
and Themisto-I.
Due to changes in hardware platform and firmware when replacing a radio mod-
ule, the end device’s radio certification becomes void. A new radio certification
or declaration needs to be acquired by performing actions according to the lo-
cal statutory requirements at the location of deployment. It is advised to go
through the relevant modules to get detailed information on radio certification
and declaration.
To evaluate the migration to Thyone-I, Würth Elektronik eiSos GmbH & Co. KG
is able to provide adapter boards. Please get in contact with your local sales.
4
Version 1.1, July 2023 www.we-online.com/wcs
