Tallysman® Introduces the TWA928LXF Embedded eXtended Filter (XF) Triple-Band GNSS Antenna to its AccuAuto Family

November 15, 2021

Tallysman® Introduces the TWA928LXF Embedded eXtended Filter (XF) Triple-Band GNSS Antenna to its AccuAuto Family

(Ottawa, Ontario, Canada, November 15, 2021) Tallysman® Wireless Inc. is excited to announce the TWA928LXF (eXtended Filter) antenna model to the innovative AccuAuto autonomous vehicle antenna family. The compact and rugged embedded AccuAuto antennas offer key features not available in other embedded autonomous vehicle antennas on the market.

eXtended Filtering was added to the Tallysman TWA928L antenna to mitigate new radio frequency bands that interfere with GNSS signals. For example, new LTE bands have been activated, and their signal or harmonic frequencies can affect GNSS antennas and receivers. In North America, the planned Ligado service, which will broadcast in the frequency range of 1526 to 1536 MHz, can affect GNSS antennas that receive space-based L-band correction service signals (1539 – 1559 MHz).  Similarly, new LTE signals in Europe [Band 32 (1452 – 1496 MHz)] and Japan [Bands 11 and 21 (1476 – 1511 MHz)] have also affected GNSS signals. Lastly, the Inmarsat satellite communication uplink (1626.5 – 1660.5 MHz), commonly used on maritime vessels, can also affect nearby GNSS antennas.

Field tests have confirmed that Tallysman’s custom XF filtering mitigates the new (Europe and Japan) and existing LTE signals, enabling the XF antenna to produce clean and pure GNSS radio frequency data.

The triple-band TWA928LXF supports GPS/QZSS-L1/L2/L5, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b, BeiDou-B1/B2/B2a, and NavIC-L5 signals and frequency bands, including L-band correction services. The Tallysman® embedded AccuAuto vehicle antenna features a patented Tallysman® Accutenna® technology antenna element, an integrated ground plane, radome, and underside cover that provides mist and condensation protection. The bottom cover also supports the antenna cable and mitigates cable vibration to ensure the antenna has a long service life, while the ground plane improves antenna performance. All AccuAuto antennas are built with Automotive Electronics Council (AEC) certified electronic components designed to perform under the most challenging environmental conditions, such as extreme temperatures, shock, and vibration.