TW3400/TW3402 GPS/GLONASS Antenna
The TW3400/TW3402 are professional grade
GNSS antennas covering the GPS L1, GLONASS L1
and SBAS (WAAS, EGNOS & MSAS) frequency band
(1574 to 1606 MHz). They are especially designed
for precision industrial, agricultural and military
applications and offers excellent circular polarized
signal reception, multipath rejection and out of
band signal rejection.
The TW3400/TW3402 feature a highly circular
dual-feed wideband patch element, with a two
stage Low Noise Amplifier, comprised of one input
LNA per feed, a mid section SAW to filter the
combined output, and a final output gain stage.
This configuration provides excellent axial ratio
that is constant across the full frequency band. An
optional tight pre-filter is available on the TW3402
to protect against saturation by high level sub-
harmonic and L-Band signals.
The TW3400/TW3402 is housed in a permanent
mount industrial grade weather-proof enclosure.
Two options for pole mounting are available an L-
bracket (P/N#23-0040-0) or a pipe mount
(P/N#23-0065-0).
TW3400 Dimensions (mm)
Flat radome is shown, Conical Radome also available
Applications
High Accuracy & Mission Critical Global Positioning
Precision Agriculture, Mining & Construction
Military & Security
Avionics
Law Enforcement & Public Safety
Fleet Management & Asset Tracking
Features
Great axial ratio: 1 dB typ.
Low noise LNA: 1 dB
High rejection SAW filter
High gain LNA: 28 dB typ.
Low current: 10 mA typ.
Wide voltage input range: 2.5 to 16 VDC
IP67 weather proof housing
Benefits
Excellent circular polarisation
Excellent multipath rejection
Excellent signal to noise ratio
Great out of band signal rejection
Increased system accuracy
Ideal for harsh environments
RoHS compliant
TW3400/TW3402 GPS/GLONASS Antenna
Specifications
Antenna
Architecture
1 dB Bandwidth
Antenna Gain (with 100mm ground plane)
Axial Ratio (over full bandwidth)
Dual, Quadrature Feeds
30 MHz
4.25 dBic
1 dB typ., 3 dB max.
Electrical
Filtered LNA Frequency Bandwidth
Polarization
LNA Gain
Gain flatness
Out-of-Band Rejection
<1500 MHz
<1550 MHz
>1640 MHz
VSWR (at LNA output)
Noise Figure
Supply Voltage Range (over coaxial cable)
Supply Current
ESD Circuit Protection
1574 to 1606 MHz
RHCP
28 dB min., 1575.42 to 1606 MHz
+/- 2 dB, 1575 to 1605 MHz
>32 dB (TW3400)
>50dB (TW3402)
>25 dB
>50dB
>35 dB
>75dB
<1.5:1
1 dB typ.
3.5 dB typ (TW3402)
2.5 to 16 VDC nominal (12VDC recommended maximum)
10 mA typ.
15 KV air discharge
Mechanicals & Environmental
Mechanical Size
Operating Temp. Range
Enclosure
Weight
Attachment Method
Environmental
Shock
Vibration
66.5 mm dia. x 21 mm H
-40 to +85 °C
Radome: ASA Plastic, Base: Zamak White Metal
150 g
Permanent ¾” (19mm) through hole mount
IP67 and RoHS compliant
Vertical axis: 50 G, other axes: 30 G
3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G
Ordering Information
Legacy Part Numbers:
TW3400 – GPS/Glonass Antenna
32-3400-xx-yy
TW3402 - GPS/Glonass Antenna, with pre-filter
32-3402-xx-yy
Connector:
xx = 00 TNC
xx = 01 N Type (premium applies)
Radome Colour
yy = 10 Dark grey low profile
yy = 11 White low profile
* As a result of a growing product portfolio, Tallysman has rationalized its part number system. No changes have
been made to the mechanical or electrical properties of these products. Where administratively possible, please use
the following Part Numbers.
TW3400 – GPS/GLONASS antenna
33-3400-xx-yy-zzzz
TW3402 - 33-3402-xx-yy-zzzz
Where xx = connector type, yy = shape and colour of radome, and zzzz = cable length in mm (where applicable)
Please refer to the Ordering Guide
(http://www.tallysman.com/orderingguide.php)
for the current and complete list
of available radomes and connectors.
Tallysman Wireless Inc
sales@tallysman.com
106 Schneider Road, Unit 3
Ottawa ON K2K 1Y2 Canada
Tel 613 591 3131
Fax 613 591 3121
The information provided herein is intended as a guide only and is subject to change without notice. This document is not to be
regarded as a guarantee of performance. Tallysman Wireless Inc. hereby disclaims any or all warranties and liabilities of any
kind. © 2010 Tallysman Wireless Inc. All rights reserved.
Rev 3.1
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