A Tallysman
Accutenna™
Antenna
TW2405/TW2407 Embedded GPS/GLONASS Antenna
The TW2405/TW2407 employs Tallysman’s unique
Accutenna™
technology covering the GPS L1,
GLONASS L1 and SBAS (WAAS, EGNOS & MSAS)
frequency bands (1574 to 1606 MHz). It is especially
designed for precision industrial, agricultural and
military OEM applications. It provides truly circular
response over its entire bandwidth thereby
producing superior multipath signal rejection.
The TW2405/TW2407 features a 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 with part
number TW2407 to protect against saturation by
high level sub-harmonics and L-Band signals.
The TW2405 /TW2407 comes in a compact circular
form factor with a built-in 50 mm diameter ground
plane.
Applications
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High Accuracy & Mission Critical GPS
Precision Agriculture, Mining & Construction
Military & Security
Avionics
Law Enforcement & Public Safety
Fleet Management & Asset Tracking
Features
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Great axial ratio: <3 dB over full bandwidth
Low noise LNA: 1 dB
High rejection SAW filter
High gain: 28 dB typ.
Low current: 10 mA typ.
ESD circuit protection: 15 KV
Wide voltage input range: 2.5 to 16 VDC
Benefits
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Excellent multipath signal rejection
Increased system accuracy
Excellent signal reception
Great out of band signal rejection
Compact form factor
RoHS compliant
TW2405/TW2407 Embedded GPS/GLONASS Antenna
Specifications
Antenna
Architecture
0.5 dB Bandwidth
Antenna Gain (with 100mm ground plane)
Axial Ratio over Bandwidth (over full bandwidth)
Dual, Quadrature Feeds
31 MHz
4.25 dBic
1dB typ.
≤
3 dB max.
Vcc = 3V, over full bandwidth, T=25°C
Electrical
Architecture
Filtered LNA Frequency Bandwidth
Polarization
Gain
Gain flatness
Out-of-Band Rejection
One LNA per feed line, mid section SAW filter (TW2405)
One SAW Filter & LNA per feed line, mid-section SAW filter (TW2407)
1574 to 1606 MHz
RHCP
28 dB min., 1575.42 to 1606 MHz (TW2405)
25 dB min, 1575.42 to 1606 MHz (TW2407)
+/- 2 dB, 1575 to 1605 MHz
>32 dB (TW2405)
>50dB (TW2407)
>25 dB (TW2405)
>50 dB (TW2407)
>35 dB (TW2405)
>70 dB (TW2407)
<1.5:1
1 dB typ.(TW2405)
<3.5 dB typ. (TW2407)
+2.5 to 16 VDC nominal (12 VDC recommended maximum)
15 mA typ, 25mA Q max (85°C).
15 KV air discharge
<1500 MHz
<1550 MHz
>1640 MHz
VSWR (at LNA output)
Noise Figure
Supply Voltage Range (over coaxial cable)
Supply Current
ESD Circuit protection
Mechanicals & Environmental
Mechanical Size
Cable
Operating Temp. Range
Weight
Attachment Method
Environmental
Shock
Vibration
50 mm dia. x 7.8 mm H
RG174
-40 to +85°C
35 g
Adhesive or screw mount
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:
TW2405
32-2405-xx-yyyy-zz
TW2407
32-2407-xx-yyyy-zz
Where xx = connector type, yyyy = cable length in mm and zz = custom tuning number assigned by Tallysman
* 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.
TW2405: 33-2405-xx-yyyy-zz
TW2407: 33-2407-xx-yyyy-zz
Please refer to the Ordering Guide
(http://www.tallysman.com/orderingguide.php)
for the current and complete list of
available connectors.
Tallysman Wireless Inc
106 Schneider Road, Unit 3
Ottawa ON K2K 1Y2 Canada
Tel 613 591 3131
Fax 613 591 3121
sales@tallysman.com
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. © 2011 Tallysman Wireless Inc. All rights
reserved.
Rev 5.0
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