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The Wireless M-Bus – or Wireless Meter Bus – is an open standard developed for very power efficient smart metering and Advanced Metering Infrastructure (AMI) applications and it is quickly spreading in Europe for electricity, gas, water and heat metering.

A Wireless M-Bus network (wM-Bus) is based on a star topology network with master and slave devices described in the EN 13757 standard which comprises a number of different operating modes: S, T, R and C (868 MHz), F (433 MHz) and N (169 MHz).

ST offers a range of sub-1GHz transceivers, baluns and STM32 microcontrollers together with a large set of software libraries, including a free wM-Bus firmware stack for evaluation and sample implementation of a wM-Bus gateway in addition to hardware tools that enable quick development and deployment of wM-Bus networks.

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Technical Documentation

    • Description Version Size Action
      AN4190
      Antenna selection guidelines
      1.1
      1.1 MB
      PDF
      AN2348
      IPAD™ 400 µm Flip Chip: package description and recommendations for use
      5.0
      261.7 KB
      PDF
      AN4193
      Low duty cycle operation with the SPIRIT1 transceiver
      2.0
      225.38 KB
      PDF
      AN4169
      PCB design guidelines for the SPIRIT1 transceiver
      2.0
      652.41 KB
      PDF
      AN4198
      SPIRIT1: increasing the output power
      1.0
      387.86 KB
      PDF
      AN4103
      Using the SPIRIT1 transceiver under EN 300 220 at 169 MHz
      1.0
      2.25 MB
      PDF
      AN4110
      Using the SPIRIT1 transceiver under EN 300 220 at 868 MHz
      1.0
      1 MB
      PDF
      AN4305
      Using the SPIRIT1 transceiver with range extender under EN 300 220 at 169 MHz
      1.0
      1.84 MB
      PDF
      AN4271
      Using the SPIRIT1 transceiver with range extender under EN 300 220 at 868 MHz
      1.0
      1.88 MB
      PDF
      AN4772
      wM-Bus (2013) firmware stack overview
      1.0
      786.08 KB
      PDF
      AN4190

      Antenna selection guidelines

      AN2348

      IPAD™ 400 µm Flip Chip: package description and recommendations for use

      AN4193

      Low duty cycle operation with the SPIRIT1 transceiver

      AN4169

      PCB design guidelines for the SPIRIT1 transceiver

      AN4198

      SPIRIT1: increasing the output power

      AN4103

      Using the SPIRIT1 transceiver under EN 300 220 at 169 MHz

      AN4110

      Using the SPIRIT1 transceiver under EN 300 220 at 868 MHz

      AN4305

      Using the SPIRIT1 transceiver with range extender under EN 300 220 at 169 MHz

      AN4271

      Using the SPIRIT1 transceiver with range extender under EN 300 220 at 868 MHz

      AN4772

      wM-Bus (2013) firmware stack overview

EMI Filtering and Signal Conditioning

Part number Description
BALF-SPI-01D3 50Ω nominal input / conjugate match balun to SPIRIT1, with integrated harmonic filter
Part number
50Ω nominal input / conjugate match balun to SPIRIT1, with integrated harmonic filter

Wireless Transceivers, MCUs and Modules

Part number Description
SPIRIT1 Low data rate, low power Sub 1GHz transceiver
Part number
Low data rate, low power Sub 1GHz transceiver