GNSS Products

Documents

pdf Antenna Product Overview

pdf Comparing GNSS Antenna Performance

pdf White Paper – GNSS Antennas

pdf GNSS Antenna Presentation

pdf TW3072 Timing Antenna Install

pdf4000 Series White Paper – New Challenges for GNSS Patch Antennas

pdfTallysman TW4000 Series White Paper

pdfPatch Antennas for the New GNSS (GPS World Article Feb /12)

STMicroelectronics GPS + GLONASS Simulation

Multi-constellation GNSS

Download TW3470/TW3472 Datasheet

TW3470/TW3472 GPS/GLONASS Timing Antenna

The TW3470/TW3472 are professional grade 40dB fixed mount Timing antennas covering the GPS L1, GLONASS L1 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 are housed in a permanent mount industrial-grade weather- proof enclosure, and comes with a TNC Jack (female) connector.

Applications Features Benefits
  • GPS / GLONASS Fixed Timing
  • High Accuracy & Mission Critical Global Positioning
  • Military & Security
  • Avionics
  • Law Enforcement & Public Safety
  • Fleet Management & Asset Tracking
  • Great axial ratio: 1 typ.
  • High gain LNA: 40 dB min.
  • Low noise LNA: 1dB/3.5dB TW3470/TW3472
  • Available sharp pre-filter (TW3472)
  • Low current: 21 mA typ.
  • Wide supply voltage: 2.5 to 10 VDC
  • IP67 weather proof housing
  • Available flat-top radome (Mobile Apps)
  • Excellent circular polarisation
  • Excellent multipath rejection
  • Excellent signal to noise ratio
  • Excellent out-of-band rejection (TW3472)
  • Increased system accuracy
  • Ideal for harsh environments
  • RoHS compliant

Specifications

Antenna
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.
Electrical
Architecture One LNA per feed line -> SAW filter -> 2-Stage LNA
Filtered LNA Frequency Bandwidth 1574 to 1606 MHz
Polarization RHCP
LNA Gain 40 dB min., 1575.42 to 1606 MHz
Gain flatness +/- 2 dB, 1575 to 1605 MHz
Out-of-Band Rejection
<1500 MHz
<1550 MHz
>1640 MHz
TW3470 TW3472
>32 dB >50 dB
>25 dB >50 dB
>35 dB >70 dB
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 10VDC nominal
Supply Current 21 mA typ.
ESD Circuit Protection 15 KV air discharge
Mechanicals & Environmental
Mechanical Size 66.5 mm dia. x 47.5 mm H
Connectors TNC Jack (female)
Operating Temp. Range -40 to +85 °C
Enclosure Radome: ASA Plastic, Base: Zamak White Metal
Weight 140 g
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
Ordering Information
TW3430 – Dark gray radome, TNC connector 32-3470-0-00
TW3430 – white radome, TNC connector 32-3470-0-01
TW3432 – Dark gray radome, TNC connector 32-3472-0-00
TW3432 – white radome, TNC connector 32-3472-0-01
Download TW3470/TW3472 Datasheet

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.