Wi-Sys Communications Inc.
WS3940-ULD GPS + Cellular
Combined Embedded Antenna
Applications:
¨ Cellular + GPS Covert Installation
¨ Law Enforcement
¨ Automotive Navigation OEMs
¨ Fleet Management & Telematics OEMs
¨ Asset Tracking systems
Dimensions: (in inches)
Custom made for the telematics marketplace, the WS3940-ULD Cellular + GPS embedded antenna is an
excellent choice for systems requiring dependable and highly accurate positioning data, as well as clear
and consistent host-to-vehicle communications. With excellent LHCP rejection for less multipath
effects, and a low-noise amplifier, the antenna provides a consistent and clear GPS signal. Cellular
reception is tuned to receive 824 -894 MHz (cell), 890-960 MHz (GSM), 1710-1880 MHz (European),
and 1850-1990 MHz (N. American) frequencies for optimum system performance.
Features:
¨ Quad-band cellular reception
¨ Semi-flexible for covert
installation
¨ Excellent out-of-band signal
rejection
¨ High gain active GPS antenna
¨ Competitively priced
¨ Easy to install
¨ Wide range of connector types
available.
3 Metre
(Standard)
Wi-Sys Communications Inc.
WS3940-ULD GPS + Cellular
Combined Embedded Antenna
Featuring a custom designed high performance
GPS patch element and a quad-band cell
antenna in an ultra-thin design. The WS3940-
ULD’s compact and efficient design combines
the power of both GPS and cellular technologies
within one antenna, thereby maximizing your
installation options. With a wide range of
connector types, the WS3940-ULD is the perfect
solution for TELEMATICS devices and covert
installations.
Technical Specifications
Environmental Specifications
¨ Operating Temp: -40c to +80c
¨ Humidity: 95% max (non condensing)
Mechanical
¨ Dimension: 5.0” x 2.07” x 0.33”
¨ High density Poron Foam backing
¨ Cable: 1.5 DS-QEHV Shikoku DUAL Cable
¨ Cable length: 3 Metres (Standard),
other lengths optional
¨ Cable loss: 1.0 dB/m typical
¨ Connector: SMA standard, other connectors
available
Antenna Response (GPS)
¨ Frequency: 1575.42 MHz
¨ Gain (typical): 25 dB
¨ Noise Figure (typical): 1.6 dB
¨ Polarization: Right Hand Circular
¨ LHCP Rejection: > 6 dB
¨ VSWR: 2.0
Electrical (GPS)
¨ Voltage: 2.7 – 5.0 VDC
¨ Current (typical): 8.0 mA
Electrical (Cellular)
¨ Frequencies: 824-894 MHz (Cellular)
890-960 MHz (GSM)
1710-1880 MHz (Europe)
1850-1990 MHz (N. America)
¨ Output Impedance: 50 Ohm Nominal
¨ VSWR: 2.0
¨ Gain: 2 dBi (approx.)