UWB Signal Generator – IEEE 802.15.4a

The UWB Signal Generator also called demonstrator is generating signals according to the IEEE 802.15.4a standards in order to allow to measure UWB signal propagation for distance and position evaluation.

The UWB Demonstrator System is a modular system, which has been developed for ranging and positioning experiments. The central element of the system is an FPGA, which implements the signalling schemes defined by the IEEE 802.15.4a standard. In order to keep high flexibliity, the data processing is held offline. The receiver and ranging algorithms are implemented in software. Measurements have been performed in LOS and NLOS scenarios of outdoor, industrial, office, and residential environments using the demonstrator.

System Characteristics:

  • Time difference of arrival (TDoA)
    • Accuracy <30cm
  • Offline processing
    • For high flexibility
    • Measurement collection
  • Standards
    • IEEE 802.15.4a
    • IEEE 802.15.4f
  • Modular structure with high performance laboratory equipment
    • Can be used as reference system

The UWB signal generator is provided in a metal industrial case with all RF inputs and outputs visible on the front panel.

The UWB signal generator delivers an output signal in order to test IEEE 802.15.4a and IEEE 802.15.4f based positioning.

The carrier frequency is 3.9936 GHz with a bandwidth of 499.2 MHz.

Tchip is 2.0032 ns.

The UWB RTLS signal generator is the core module of the test setup. This opened picture shows all its core elements.

General purpose measurement antennas were used for the TX channel and the RX channels.

The full test setup shows the UWB Signal Generator including filters, antennas and a digital storage oscilloscope (DSO). The DSO is triggered by the UWB signal generator and captures are signal from all receive channels.