Ultra Compact Embedded GPS Antenna

Wi-Sys: Ultra Compact Embedded GPS Antenna
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Features
  • Very Compact form factor
  • High Gain: 28dB
  • 15 KV ESD circuit protection
  • Great out-of-band SAW Filter
  • 2.7 to 5 Volt operation
  • Custom cable lengths available
  • Other connector types available
  • Ideal for embedded applications
  • Low price

WS1857 18 mm x 18mm x 7 mm Very Compact Embedded GPS Antenna

The Very Compact WS1857 Embedded GPS antenna is ideal for GPS Enabled mobile phones, PDAs, laptops and portable GPS Handhelds. The WS1857 antenna features a 18 mm x 18 mm x 4 mm ceramic patch element, ESD circuit protection, a two stage low noise amplifier and a SAW filter, enabling the WS1857 to provide great out-of-band signal rejection performance, consistent and clear signal while minimizing loss-of-lock in a very small form factor. With its very compact 18 mm x 18 mm x 7 mm dimensions, the WS1857 antenna is perfectly suited for OEM applications.

Designed for easy integration into OEM handheld platforms, the WS1857 antenna integrates a highly robust ESD protection circuit, a two-stage low-noise amplifier to ensure a reliable and clear signal for the GPS receiver even in difficult conditions, as well as a SAW filter for even greater performance for hand held telematics applications where out-of-band signal rejection is required.

Applications
  • GPS Enabled Mobile Phones, PDAs & Laptops
  • Portable GPS Handhelds
  • GPS enabled M2M
  • Military and Law Enforcement Radios
  • GPS Enabled Offender Monitoring Systems
  • Asset Tracking Equipment
  • Automotive & Marine Navigation Systems

Technical Specifications

Environmental Specifications temperature Operating: -40c to +85c (-45c to +85c storage)
humidity 95% max (non condensing)
Mechanical dimensions 18 mm x 18 mm x 7 mm
shockVertical axis 50G
Other axes 30G
vibration3 axis, sweep = 15 min
10 - 200 Hz log sweep: 3G
Antenna Response frequency1575.42 MHz
gain1 dBic
polarizationRight Hand Circular
axial ratio@ 90° 4 dB
@ 20° 6 dB
Electrical voltage2.7 - 5 VDC
current15 mA @ 5V, 9 mA @ 3.3V
connectorRight angle MCX,
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)
@ 5VDC: 30 dB (typical)
noise figure1.5 dB (typical)
out-of-band rejection +/- 15 MHz: 5 dB
+/- 20 MHz: 10 dB
+/- 30 MHz: 32 dB
+/- 40 MHz: 40 dB