Low current, active GPS antenna

pdf data sheet

Features

2 mA @ 2.7 VDC
Extremely low noise figure: 0.8 dB
Excellent out-of-band signal rejection
Wide range of connector types available
High performance LNA (patented)
Wide voltage input range (2.5-3.3 VDC)
Excellent low elevation angle coverage

WS3914: Low in power, high in quality

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.

Designed for maximum 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. Where other GPS antennas fail, the WS3914´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

The 2 mA GPS antenna solution

The Wi-Sys Antenna Family

WS3910	The high gain active GPS antenna with SAW filter
WS3940	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

Technical Specifications

Environmental Specifications	temperature	-40c to +80c operating -45c to +80c storage
Environmental Specifications	humidity	95% max (non condensing)
Mechanical	dimensions	45mm x 51mm x 12mm 2.05" x 2.32" x 0.53"
	weight	120g (4.2 oz)
	attachment methods:	Magnetic (5 lb lift-off force) or permanent (pre-threaded for 3x 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° 3.5 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	1.0 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	0.8 dB
	out-of-band rejection	+/- 15 MHz: 18 dB +/- 20 MHz: 25 dB +/- 40 MHz: 45 dB

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