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  • STSW-ST25R004 contains a graphical user interface (GUI) to specify the antenna parameters and the target matching. It performs transient, AC, and S-parameter simulations of the calculated antenna schematic.

    AN4974 and AN5276 (both available on ST website) provide guidance on the measurement of the antenna parameters required as input for this matching tool. With these inputs a best matching circuit can be defined.

    Key Features

    • STSW-ST25R004 is a software that calculates the matching network for antennas connected to ST25R3911B/ST25R391x devices, using Qucs (Quite Universal Circuit Simulator) to simulate the antenna and matching network characteristics.
    • The software supports the following products:
      • ST25R3910
      • ST25R3911
      • ST25R3911B
      • ST25R3912
      • ST25R3913
      • ST25R3914
      • ST25R3915
      • ST25R3916
      • ST25R3917

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Technical Documentation

    • Description Version Size Action
      DB3303
      Antenna matching tool for ST25R3911B/ST25R391x devices
      2.0
      160.35 KB
      PDF
      DB3303

      Antenna matching tool for ST25R3911B/ST25R391x devices

    • Description Version Size Action
      AN5276
      Antenna design for ST25R3916
      2.0
      2.75 MB
      PDF
      AN4974
      Antenna matching for ST25R3911B/ST25R391x devices
      2.0
      3 MB
      PDF
      AN5322
      ST25R3916 automatic antenna tuning (AAT)
      1.0
      1.08 MB
      PDF
      AN5276

      Antenna design for ST25R3916

      AN4974

      Antenna matching for ST25R3911B/ST25R391x devices

      AN5322

      ST25R3916 automatic antenna tuning (AAT)

Legal

    • Description Version Size Action
      SLA0052
      SOFTWARE PACKAGE LICENSE AGREEMENT (“Agreement”)
      3.2
      88.44 KB
      PDF
      SLA0052

      SOFTWARE PACKAGE LICENSE AGREEMENT (“Agreement”)

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