High Gain Permanent Mount GPS Antenna

Wi-Sys: WS3978-DH - High gain GPS antenna with cone-shaped radome coverWi-Sys: WS3978 - High gain GPS antenna with low profile housing
  • Weather proof, all-plastic, non-corrosive enclosure
  • ¾ inch thru-hole or bracket mount
  • Voltage range: 2.7 to 5.5 V
  • High gain: 40 dB (typical)
  • Very low noise figure: 0.5dB
  • Great out-of-band signal rejection
  • 15 KV ESD circuit protection

  • Fixed Timing & Positioning Applications
  • WiMAX / Fixed Wireless Broadband
  • Cellular Base Station
  • Fleet Management & Telematics
  • Marine Vessel Installations

WS3978 High Gain Permanent Mount GPS Antenna

The WS3978 high gain permanent mount GPS Antenna provides 40 dBs of gain and great high out-ofband rejection performance. It features a perfectly tuned custom ceramic patch element for maximum signal reception, ESD circuit protection, a very low noise (0.5 dB) 3 stage LNA circuit and a SAW filter, enabling the WS3978 to provide a reliable and clear GPS signal while minimizing loss-of-lock, even when conditions are less than ideal. Available in an all-plastic, non-corrosive low profile package for vehicle mount or with a cone-shaped radome cover for fixed installations, the WS3978 high gain permanent mount GPS Antenna is the optimum choice for GPS Tracking and Timing applications with long cable runs.

Technical Specifications

Environmental Specifications temperature-40c to +85c operating
-45c to +85c storage
weather proofIP67
Mechanical dimensionsWS3978: 60 mm dia. x 21 mm H
WS3978-DH: 65mm dia. x 44.4mm H
weight50g
housingGE Lexan EXL9330, Colour BK1334
(other colours available)
mounting¾" thru-hole or bracket mount
connectorTNC jack connector
(flying-cable option also available)
shockVertical axis 50G, Other axes 30G
vibration3 axis, sweep = 15 min
10-200 Hz log sweep: 3G
Antenna Response Frequency1575.42 MHz
gain@ 90° 3 dBic
@ 20° -2.0 dBic
polarizationRight Hand Circular
axial ratio@ 90° 4 dB
@ 20° 6 dB
Electrical voltage2.7 to 5.5 VDC
current15mA
ESD circuit protection15KV
LNA Specifications frequency1572.5 - 1578 MHz
output impedance50 Ohm
VSWR1.5:1 max (at connector)
gain40 dB (typical)
noise figure0.5 dB (typical)