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

TW2012 – Datasheet

TW2012 GPS Brickwall Filtered Antenna

The TW2012 by Tallysman Wireless is a professional grade, dual-filtered magnet mount, GPS L1 antenna, specially designed for precision positioning and timing applications in environments characterized by high L-Band RF fields.

The TW2012 features a precisely tuned ceramic patch element, a tight SAW pre-filter, a first LNA gain stage, a mid-section SAW filter and a final gain stage. It covers the GPS L1 and SBAS (WAAS/EGNOS/MSAS) frequency band (1572.5 to 1578 MHz), and it offers unparalleled out-of-band signal rejection and excellent axial ratio for improved signal reception and multipath rejection.

The TW2012 is housed in a compact, industrial-grade weather-proof, magnet mount enclosure, and comes with a bulkhead SMA female connector or with 5 metres of cable and a wide range of connector.

Applications Features Benefits
  • Anti-Jamming & Mission Critical GPS
  • Military & Security
  • Precision Agriculture, Mining & Construction
  • Avionics
  • Law Enforcement & Public Safety
  • Fleet Management & Asset Tracking
  • Narrow pass-band SAW pre-filter
  • 3 dB Noise Figure (including pre-filter)
  • Axial ratio: <4dB at Zenith
  • High LNA gain: 27 dB typ.
  • Low current: 10 mA typ.
  • ESD circuit protection: 15 KV
  • Wide voltage input range: +3.0 to 10 VDC
  • Great out-of-band signal rejection
  • Ideal for high level RF environments
  • Great multipath rejection
  • Increase system accuracy
  • Great signal to noise ratio
  • Weather proof IP67 housing
  • RoHS compliant

Specifications

Vcc = 3V, over full bandwidth, T=25°C

Antenna
Architecture Custom single-feed ceramic patch
Antenna Gain (100mm ground plane) 5 dBic at 90° on 100mm Ground Plane
Axial Ratio (over full bandwidth) 4 dB at 90°, 6dB at 20°
Electrical
Architecture SAW Pre-Filter, 1st LNA, mid section SAW filter, output LNA
Frequency Bandwidth 1572.5 to 1578 MHz
Polarization RHCP
LNA Gain (including SAW pre-filter) 27 dB typ. at 90° (at 1575.42 MHz)
Out-of-Band Rejection
*Refer to table below
VSWR (at LNA output) <1.5:1
Noise Figure 3 dB typ.
Supply Voltage Range +3.0 to 10 VDC nominal
Supply Current 10 mA typ.
ESD Circuit Protection 15 KV air discharge
Mechanicals & Environmental
Mechanical Size 57 mm dia. x 15 mm H
Connectors Bulkhead SMA female, or SMA male on flying lead – other connectors optional
Cable RG174 / 5 metres, custom lengths optional
Operating Temp. Range -40 to +85 °C
Enclosure Radome: ASA Plastic, Base: Zamak White Metal
Weight 150 g
Attachment Method Magnet or permanent (pre-tapped 4 x 6-32UNC)
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
TW2012 – 5 metre cable, SMA Male 32-2012-0
TW2012 – Bulkhead SMA Female 32-2012-7
Out of Band Rejection
Download TW2012 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. © 2010 Tallysman Wireless Inc. All rights reserved.