High Gain Embedded GPS Antenna

Wi-Sys: WS3950 - Embedded GPS Antenna without ground planeWi-Sys: WS3960 - Embedded GPS Antenna with internal ground plane
pdf data sheetpdf data sheet
application noteapplication note
Low power embedded antenna also available
Features
  • 28 dB gain @ 3.3 VDC
  • Available with or without internal ground plane
  • Extremely low noise figure: 0.8 dB
  • Excellent out-of-band signal rejection
  • Wide range of connector types available
  • High performance patented LNA
  • Excellent low elevation angle coverage

WS3950/WS3960: Unparalleled in Quality and Performance

The WS3950/WS3960 GPS antennas are unparalleled in quality and performance, and ideal for embedded mobile applications. They feature a custom designed ceramic patch element that minimizes detuning effects caused by adjacent objects. This element, along with a low noise amplifier and SAW filter, enables these antennas to provide a consistent, clear signal while minimizing loss-of-lock when GPS conditions are less than ideal. The WS3950 comes in a compact square package and the WS3960 comes with a 1.85" mini-ground plane.
Designed for maximum GPS performance, the WS3950/60 antennas´ advanced circuitry integrates a SAW filter and low-noise amplifier to ensure a reliable and clear signal for the GPS receiver even in difficult conditions. Where other GPS antennas fail, the WS3950/60's superior out-of-band rejection and low noise characteristics can provide a reliable signal, which can be critical for improving acquisition times and minimizing outages
Applications
  • Portable Telematics
  • Automotive Navigation Systems
  • Fleet Management & Telematics Systems
  • Marine Navigation Systems
  • Asset Tracking Equipment
  • Military Radios and In-Vehicle-Systems
  • Law Enforcement Radios and In-Vehicle-Systems

Technical Specifications

Environmental Specificationstemperature-40c to +80c operating
-45c to +80c storage
humidity95% max (non condensing)
Mechanicaldimensions28mmx28mmx9mm
1.1" x 1.1" x 0.35"

47mm diameter x 9mm
1.85" diameter x 0.35"
(with ground plane)
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 - 5.0 VDC
current7.5 mA @ 3.3VDC (typical)
connectorMMCX right angle
Other connector types available
cableShikoku Coax Cable p/n 1.5QEHV(TA)
cable length15 cm (6"), other lengths available
LNA Specifications frequency1572.5 - 1578 MHz
output impedance50 Ohm
VSWR1.5:1 max (at connector)
gain@ 3.3VDC: 28 dB (typical)
@ 5.0VDC: 28.5 dB (typical)
noise figure0.8 dB
out-of-band rejection + 15 MHz: 10 dB / - 15 MHz: 30 dB
+ 20 MHz: 20 dB / - 20 MHz: 30 dB
+ 40 MHz: 40 dB / - 40 MHz: 40 dB