TW3470/TW3472 Dual Feed GPS/GLONASS Timing Antenna
The TW3470/TW3472 are professional grade 40dB fixed mount Timing antennas covering the GPS L1, GLONASS G1 and SBAS (WAAS, EGNOS & MSAS) frequency bands (1574 to 1606 MHz). They are especially designed for timing, precision and military applications and offer excellent circular polarized signal reception, multipath rejection and out of band signal rejection.
The TW3470/TW3472 feature a highly circular dual-feed wideband patch element, with a three stage Low Noise Amplifier. This configuration provides excellent axial ratio that is constant across the full frequency band. An optional tight pre-filter is available to protect against saturation by high level sub-harmonics and L- Band signals with part number TW3472.
The TW3470/TW3472 has a 19mm (3/4 Inch) though hole, permanent mount white-metal base, with an industrial-grade, IP67 compliant conical radome. Two options for pole mounting are available an L-bracket (P/N#23-0040-0) or a pipe mount (P/N#23-0065-0).
Vcc = 3V, over full bandwidth, T=25°C
|Architecture||Dual, Quadrature Feeds|
|1 dB Bandwidth||32 MHz|
|Antenna Element Gain (100mm ground plane)||4.25 dBic|
|Axial Ratio (over full bandwidth)||1 dB typ., 3 dB max.|
|Architecture||TW3470: One LNA per feed line -> SAW filter -> 2-Stage LNA|
|TW3472: (SAW->LNA) per feed -> Combiner -> SAW -> 2-Stage LNA|
|Filtered LNA Frequency Bandwidth||1574 to 1606 MHz|
|LNA Gain||40 dB min., 1575.42 to 1606 MHz|
|Gain flatness||+/- 2 dB, 1575 to 1605 MHz|
|VSWR (at LNA output)||<1.5:1|
|Noise Figure||1 dB typ. TW3470
3.5dB typ. TW3472
|Supply Voltage Range (over coaxial cable)||2.5 to 16 VDC nominal (12VDC recommended maximum)|
|Supply Current||21 mA typ. 25mA max @85C|
|ESD Circuit Protection||15 KV air discharge|
|Mechanicals & Environmental|
|Mechanical Size||66.5 mm dia. x 47.5 mm H|
|Operating Temp. Range||-40 to +85 °C|
|Enclosure||Radome: ASA Plastic, Base: Zamak White Metal|
|Attachment Method||Permanent 3/4” (19mm) through-hole mount|
|Environmental||IP67 and RoHS compliant|
|Shock||Vertical axis: 50 G, other axes: 30 G|
|Vibration||3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G|
|Warranty||One year, parts and labour|
|Legacy Product Numbers:|
|32-3470-xx-yy||TW3470 – Dual Feed GPS/GLONASS Antenna|
|32-3472-xx-yy||TW3472 – Dual Feed GPS/GLONASS Antenna with pre-filter|
|Connector: xx= 00 TNC xx=1 N-Type (premium applies)|
|Radome Colour: yy=00 Dark Grey Conical yy= 01 White Conical 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 new Part Numbers.
TW3440 – Dual Feed GPS/GLONASS 33-3440-xx-yy-zzzz TW3442 - Dual Feed GPS/GLONASS antenna with pre-filter 33-3442-xx-yy-zzzz Where xx = connector type yy = radome type and colour 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 connectors.
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. © 2012 Tallysman Wireless Inc. All rights reserved.