Very Low Current GPS Antenna

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The Wi-Sys Antenna Family

WS3910
The high gain active GPS antenna with SAW filter

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

Very Low Current GPS Antenna

pdf data sheet

Features

Extremely low current: 2 mA @ 2.7 VDC
Very low noise figure: 1 dB
Excellent out-of-band signal rejection
High performance patented LNA
Wide voltage input range (2.5 - 3.3 VDC)
Weather proof housing
RoHS compliant
NATO approved: NSN 5985-12-364-3842

WS3914: Low in power, high in quality

The WS3914 GPS antenna has the industryÕs lowest current specification. It operates on only 2 mA of current, setting a new standard. It features a patented very low noise LNA, a high rejection SAW filter and a perfectly tuned custom ceramic patch element that minimizes detuning effects caused by adjacent objects. The WS3914 provides the clearest GPS signal reception while minimizing loss-of-lock even in less than ideal conditions. Housed in a rugged weatherproof magnetic or screw mount enclosure, the WS3914 antenna is ideal for portable applications where low power operation is a necessity.

Designed for low power use while maintaining GPS performance, the WS3914 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. The antenna design and industry leading low current draw makes the WS3914 antenna ideal for portable or telematics applications using MONITOR, STANDBY or SLEEP modes.

Applications

Personal Navigation Devices
Automotive Navigation
Military Radios and Manpacks
Law Enforcement Radios
Battery Powered Telematics & Asset Tracking

Technical Specifications

Environmental Specifications	temperature	-40c to +80c operating -45c to +80c storage
Environmental Specifications	humidity	95% max (non condensing)
Mechanical	dimensions	51.1mm x 58.9mm x 13.6mm
	weight	120g with 3 metre cable 130g with 5 metre cable
	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	2.5 - 3.3 VDC
	current	2.0 mA @ 2.7VDC (typical)
	cable	1.5 DS-QEHV Shikoku Cable Co. Ltd.
	cable loss	1.3 dB/m typical
	connector	SMA standard SMB, SMC, MCX, BNC, TNC optional
LNA Specifications	frequency	1572.5 - 1578 MHz
	output impedance	50 Ohm
	VSWR	1.5:1 max (at connector)
	gain	@ 3.3VDC: 18 dB (typical)
	noise figure	1 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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