Tallysman TW1500 Embedded Globalstar Antenna

The TW1500 employs Tallysman’s unique Accutenna® technology, covering the Globalstar frequency band (1610 MHz – 1620 MHz).

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Product Documents

The TW1500 is a low cost dual feed, passive Left Hand Circularly Polarised (LHCP) antenna  specifically designed to maximise the performance of the Globalstar STU (Simplex Transmit Unit) modems.

The TW1500 has a wide-band dual-feed patch element with excellent axial ratio across the entire Globalstar bandwidth. Unlike single feed antennas, the TW1500 provides excellent multi-path rejection and a truly circular transmission response across the full bandwidth.

The embedded TW1500 includes a built-in 35 mm circular ground plane but best performance is obtained with this augmented with a local system ground plane or reflecting surface (a DC connection is not required).

Tallysman offers custom tuning services to optimize the performance of the TW1500 for any OEM installation environment.

Features

  • Dual-feed, wide band patch
  • Axial ratio, 3 dB over full bandwidth
  • High gain 4.25 dBic
  • 15 KV ESD circuit protection
  • Robust design
  • Small form factor
  • -40˚C to +85˚C operation

Benefits

  • Better axial ratio at lower elevation angles
  • Higher transmission success rates
  • Compact form factor
  • RoHS compliant

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