TW4020 TALLYSMAN | Alldatasheet
Document overview
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Technical content
Features
- 40% wider bandwidth, small footprint
- Axial ratio: 1dB typ (GPS )
- Low noise LNA: 1 dB
- High rejection SAW filter
- High gain: 28 dB typ.
- Wide voltage input range: 2.5 to 16 VDC
- IP67 weather proof housing
- Low Power: 9mA typ. at 2.3Vcc min. Benefits
- Increased system accuracy
- Excellent signal to noise ratio
- RoHS compliant
- Ideal for harsh environments
- Excellent out of band signal rejection The TW4020/TW4022 is a commercial grade wideband GNSS antenna covering the GPS L1 , frequency band. It features a s mall patch element with 40% wider bandwidth than typical GPS L1 antennas. The TW402 0/TW4022 features a high performance custom tuned ceramic patch element, 15 KV ESD circuit protection, a high gain two-stage low noise amplifier (LNA) with a mid-section high rejection SAW filter. It covers the GPS L1 and SBAS (WAAS/EGNOS/MSAS) frequency band (1572.5 to 1578 MHz), and it offers great circular polarized signal reception. The TW4022 includes a pre -filter designed to mitigate strong intermodulated or near frequency signals. Even with the wider bandwidth, the TW4020/TW4022 antenna is among the smallest high performance antenna available. It is housed in a compact IP67 magnetic mount enclosure.
TW4020/TW4022 Wideband GPS Antenna Specifications Antenna Architecture Wideband Single Feed Patch 1 dB Bandwidth 31 MHz Antenna Gain (with 100mm ground plane) 4.5 dBic Axial Ratio over Bandwidth (over full bandwidth) <1dB @ Fcenter, Electrical Architecture LNA stage 1 -> SAW filter-> LNA stage 2 (TW4020) SAW filter LNA stage 1 -> SAW filter-> LNA stage 2 (TW4022) Filtered LNA Frequency Bandwidth 1565 to 1585 MHz Polarization RHCP Gain TW4020: 26dB min., TW4022: 25dB min, Gain flatness +/- 2 dB, 1575 to 1606 MHz Out-of-Band Rejection (typ) TW4020 TW4022 <1500 MHz -45dB ->70dB <1550 MHz -25dB ->65dB >1640 MHz -40dB ->60dB VSWR (at LNA output) <1.5:1 typ 1.8:1 max. Noise Figure 1 dB typ. (TW4020) 3.5dB typ. (TW4022) Supply Voltage Range (over coaxial cable) +2.5 to 16 VDC nominal (12VDC recommended maximum) Supply Current 12 mA max. ESD Circuit Protection 15 KV air discharge Mechanicals & Environmental Mechanical Size 38mm x 38mm dia. x 14.3mm H Cable RG174 Operating Temp. Range 40 to +85 °C Enclosure Radome and base: EXL9330 Weight 73g ( enclosure 34gm, 3m cable 39gm) Attachment Method Magnetic 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
Ordering Information
TW4020 – Wideband GPS Antenna 33-4020-xx-yyyy TW4022 - Prefiltered Wideband GPS Antenna 33-4022-xx-yyyy Where xx = connector type and yyyy = length of cable in mm Please refer to the Ordering Guide (http://www.tallysman.com/orderingguide.php) for the current and complete list of available radomes and connectors.
36 Steacie Drive, Ottawa ON K2K 2A9 Canada
Tel 613 591 3131 Fax 613 591 3121 sales@tallysman.com The information pro vided 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 2.8