TW1421 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
- 1dB bandwidth 1575-1606MHz
- Very low noise LNA: <1.25 dB(TW1421)
- <1.5 dB Axial Ratio @ zenith over bandwidth
- LNA gain: 28 dB typ. (TW1421) 26dB typ (TW1422)
- Wide Supply voltage: fixed 2.5V to 16V
- 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 The TW1421/TW1422 employ Tallysman’s patented Accutenna® technology covering the GPS L1 , GLONASS G1, and SBAS (WAAS , EGNOS & MSAS) frequency band (1574 to 1606 MHz). It provides truly circular response over its entire bandwidth thereby producing superior multipath signal rejection. It also offers high out of band signal rejection. The antennas feature a novel 25mm wideband patch element with dual-feeds that are summed in a 90 ° Hybrid and input to a two stage Low Noise Amplifier (LNA) with a mid-section SAW a second low noise gain stage. This configuration provides excellent axial r atio and cross -polarization rejection across the full frequency band. The TW1422 has a pre -filter which increases the antenna’s immunity to high amplitude interfering signals, such as LTE and other cellular signals. The built -in 35mm circular ground plane should ideally be augmented with a local system ground p lane or reflecting surface (DC connection not required). The height of the RF shield (can) will be selected based upon the connector type. Connectors which require RG174 cable will be used with the t aller can. Connectors which require mico -coax cable will be used with the shorter can. OEM antennas are easily detuned by the local environment. Tallysman offers custom tuning services for optimized integration into OEM end-user modules.
TW1421/TW1422 Dual Feed Embedded GPS/GLONASS Antenna Specifications At; Vcc = 3V, over full bandwidth, T=25°C Antenna Architecture Dual, Quadrature Feeds 1 dB Bandwidth 31MHz Antenna Gain (with 100mm ground plane) 4.5dBic Axial Ratio over full bandwidth, <1.5 dB @zenith, ≤3.0dB max Electrical Architecture One LNA per feed line, mid-section SAW filter Filtered LNA Frequency Bandwidth 1574MHz to 1606MHz Polarization RHCP LNA Gain 1575.42MHz to 1606MHz 28dB typ., 25dB Min, (TW1421) 26dBtyp. 23dB min (TW1422) Gain flatness +/- 2dB, 1575MHz to 1606MHz TW1421 TW1422 Out-of-Band Rejection <1500MHz: >32dB >60dB <1550MHz: >25dB >55dB >1640MHz: >60dB >65dB VSWR (at LNA output) <1.5:1 typ. 1.8:1 max Noise Figure ≤1.25dB typ.(TW1421) 3.5dBtyp (TW1422) Supply Voltage Range (over coaxial cable) +2.5 VDC to 16 VDC nominal Supply Current 10mA typ. 15mA max. (@ 85°C) ESD Circuit Protection 15KV air discharge Mechanicals & Environmental Mechanical Size 35mm dia. x 7.25mm Cable 1.38mm OD (micro-coax) or 2.6mm OD (RG174) 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: TW1421 – GPS L1/GLONASS G1 antenna, 33-1421-xx-yyyy-zz TW1422 – Pre-filtered GPS L1/GLONASS G1 antenna 33-1422-xx-yyyy-zz 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 docume nt 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 15 Tallysman Wireless Inc. All rights reserved. Rev 4.2