The high gain, low noise, active GPS antenna

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The Wi-Sys Antenna Family

WS3914
Our lowest current model, 2 mA active GPS antenna

WS3916
Low cost GPS antenna

WS3917
Low cost GPS antenna

WS3940
Glass Mount combined Active GPS and Cellular

WS3940-ULD
Embedded, Glass Mount combined Active GPS and Cellular

WS3942
Mag Mount combined Active GPS and Cellular

WS3950
WS3960
The high gain embedded patch antenna with optional ground plane

WS3954
WS3964
The low power embedded patch antenna with optional ground plane

WS3957
WS3967
The low price embedded patch antenna with optional ground plane

WS3977
Through-hole Mount GPS Antenna

The high gain, low noise, active GPS antenna

pdf data sheet

Features

Patented very low noise (0.5dB) LNA
High rejection SAW filter
High gain: 28 dB (typ.)
Low current: 8mA (typ.)
15KV ESD circuit protection
Wide voltage input range (2.7 – 5.0 VDC)
Weather proof housing
RoHS compliant

WS3910: Unparalleled in quality and performance

The WS3910 Very Low Noise GPS Antenna has the industry’s lowest noise figure. It features ESD circuit protection, a patented very low noise LNA and a high rejection SAW filter. It also features a perfectly tuned custom ceramic patch element that minimizes detuning effects caused by adjacent objects. The WS3910 provides the clearest GPS signal reception while minimizing loss-of-lock in even in less than ideal conditions. Housed in a weatherproof magnetic or screw mount enclosure, the WS3910 Very Low Noise GPS Antenna is clearly the best choice wherever top GPS performance is required.

Designed for maximum GPS performance, the WS3910 antenna's 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 WS3910’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

Fleet Management & Telematics
Ag Positioning Equipment
Law Enforcement & Public Safety
High Accuracy & Mission Critical GPS
Military Radios and Vehicles
Avionics
Asset Tracking

Technical Specifications

Environmental Specifications	temperature	-40c to +80c operating -45c to +80c storage
Environmental Specifications		Weatherproof / IP67
Mechanical	dimensions	52.1 mm x 58.9 mm x 13.6 mm
	weight	120g (4.2 oz)
	attachment methods:	Magnetic (5 lb lift-off force) or permanent (pre-threaded for 3 x M2.5 screws)
	shock	Vertical axis 50G Other axes 30G
	vibration	3 axis, sweep = 15 min 10 - 200 Hz log sweep: 3G
Antenna Response	frequency	1575.42 MHz
	gain	@ 90°3 dBic @ 20° -2.0 dBic
	polarization	Right Hand Circular
	LHCP rejection	> 10dB
	axial ratio	@ 90° 4 dB @ 20° 6 dB
Electrical	voltage	2.7 - 5 VDC
	current	8 mA
	ESD circuit protection	15 KV
	cable	1.5 DS-QEHV Shikoku Cable Co. Ltd.
	cable loss	1.3 dB/m typical
	connector	SMA Male (standard) other connectors optional
LNA Specifications	frequency	1572.5 - 1578 MHz
	output impedance	50 Ohm
	VSWR	1.5:1 max (at connector)
	gain	28 dB (typical)
	noise figure	0.5 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

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