TW1721 TALLYSMAN | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 2
Technical content
Features
- Compact Dual Feed Patch Element
- 2 dB bandwidth 1559-1606MHz
- Very low noise LNA: <1 dB (TW1721)
- Axial ratio: 2 dB typ
- LNA gain: 28 dB typ.
- Wide voltage input range: 1.8 to 16 VDC
- ESD circuit protection: 15KV
- Temperature Compensated Gain Benefits
- Great multipath rejection
- Increase system accuracy
- Improved carrier phase linearity
- Excellent signal to noise ratio
- Great out of band signal rejection
- Compact form factor
- RoHS compliant
- Reliable performance The TW1721 /TW1722 is a compact, wideband GNSS antenna employing patented Accutenna® technology. This antenna provides accurate reception for all upper L - band GPS, GLONASS, Beidou, and Galileo signals ( L1, G1, B1, B1 BOC, B1 -2, E1) and associated augmentation signals (WAAS, EGNOS and MSAS). The TW1721 /TW1722 features a novel 25mm dual feed wideband patch element that, in sharp contrast with its competitors, provides a truly circularly polarized response, with a typical axial ratio of less than 2dB over the full bandwidth. This provides a more linear carrier phas e response and substantially improved multipath rejection for higher precision applications. The built-in 35mm circular ground plane should ideally be augmented with a local system ground plane or reflecting surface (DC connection not required). The TW1722 is the pre -filtered version of the TW1721. The pre -filter provides protection from strong near frequency or harmonic signals, such as LTE. OEM antennas are easily detuned by the local environment. Tallysman offers custom tuning services for optimized integration into OEM end-user modules.
TW1721/TW1722 Dual Feed Embedded BeiDou/Galileo/GPS/GLONASS Specifications At; Vcc = 3V, over full bandwidth, T=25°C Antenna Architecture Dual, Quadrature Feeds 2 dB Bandwidth 47 MHz Antenna Gain (with 100mm ground plane) 4.5dBic Axial Ratio over full bandwidth <2dB typ. 3dB max Electrical Filtered LNA Frequency Bandwidth 1559 MHz to 1606MHz Polarization RHCP LNA Gain TW1721 28dB typ., 25dB Min TW1722 27dB typ., 24dB Min Gain flatness +/- 2dB Out-of-Band Rejection TW1721 <1500MHz >40dB <1525MHz >45dB >1630MHz >45dB TW1722 <1500MHz >50dB <1525MHz >50dB >1640MHz >50dB VSWR (at LNA output) <1.5:1 typ 1.8:1 max. Noise Figure TW1721 1.0dB typ. TW1722 3.0dB typ. Supply Voltage Range (over coaxial cable) +1.8 VDC min to +16 VDC max (+12 VDC recommended max) Supply Current 10mA typ. 15mA max. (@ 85°C) ESD Circuit Protection 15KV air discharge Mechanicals & Environmental Mechanical Size 35mm dia. x 7.25mm Cable micro-coax or RG174 coax Operating Temp. Range -40°C to +85°C Weight 18g Attachment Method Adhesive or M2 screw mount Environmental RoHS and REACH compliant Shock Vertical axis: 50G, other axes: 30G Vibration 3 axis, sweep = 15 min, 10 to 200Hz sweep: 3G Warranty One year – parts and labour
Ordering Information
Part Numbers: TW1721 – GNSS L1 antenna, 33-1721-xx-yyyy-zz TW1722 – Pre-filtered GNSS L1 antenna 33-1722-xx-yyyy-zz Where xx = connector type; yyyy = cable length in mm; and zz = assigned by Tallysman Please refer to the Ordering Guide ( http://www.tallysman.com/wp-content/uploads/Current-Ordering-Guide.pdf)) for the current and complete list of available connectors.
36 Steacie Drive, Ottawa ON K2K 2A9 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. © 20 11 Tallysman Wireless Inc. All rights reserved. Rev 1.8