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ASD Technology release new model of GPS antenna

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ASD Technology  have announced the release of the new model 0310-814 GPS-AJ antenna. The model 031-814 GPS-AJ antenna is of a rugged, lightweight annular patch design. The GPS-AJ antenna’s radiation pattern has a deep null at the horizon. This greatly reduces the susceptibility of the GPS system to interfering terrestrial signals. Field trials have been conducted to demonstrate this feature.

The GPS-AJ antenna consists of an aluminum disk and a lexan polycarbonate radome which houses the patch element. The GPS-AJ antenna is fully sealed and has been immersion tested, has successfully passed drop-tests onto concrete and has an exterior finish in matte sandstone paint. The RF port is a right-angle 50. An SMA jack is located under the center of the GPS-AJ antenna with a provision for an RF cable stress-relief clamp.

Specifications of the GPS-AJ antenna are:

  • Frequency Range - 1,575 MHz +/- 10 MHz (L1)
  • Polarization - RHCP
  • Peak Gain @ Zenith - 8dBic minimum
  • Axial Ratio @ Zenith - 2 dB maximum at L1

Horizon suppression

  • RHCP: -20 dB minimum
  • Vertical: -20 dB minimum
  • Horizontal: -18 dB minimum
  • VSWR - 1.7:1 maximum
  • Dimensions - 9 diameter and 1.52 high
  • Weight - 10.4 ounces
  • Sealing - Fully immersion sealed
  • High temperature - tested at 71° C
  • Drop test - three times to concrete from a height of 36 inches

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