TW1500 TALLYSMAN | Alldatasheet
Document overview
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- PDF pages: 2
Technical content
Features
- dual-feed, wide band patch
- Axial ratio, 3 dB over full bandwidth
- High gain 4.25 dBi
- 15 KV ESD circuit protection
- Robust design
- Small form factor
- -40oC to +85 oC Operation Benefits
- Better axial ratio at lower elevation angles
- Higher transmission success rates
- Compact form factor
- RoHS compliant The TW 1500 employs Tallysman’s unique Accutenna technology i n a low cost OEM dual fe ed, passive Left Hand Circularly Polaris ed antenna (LHCP) for the 1610 to 1620 MHz frequency band, specifically designed to maximise the performance of the Globalstar™ STU (Simplex Transmit Unit) modems. The wideband dual feed patch element in the TW1500 has an excellent axial ratio across the entire Globalstar™ bandwidth. Unlike single feed antennas, the TW 1500 provides excellent multipath rejection and a truly circular transmission response across the Globalstar™ band. The TW1500 includes a built-in 3 5mm circular ground plane but best performance is obtained with this augmented with a local system ground p lane or reflecting surface (DC connection not required). OEM antennas are easily detuned by the local environment. Tallysman offers custom tuning s ervices for optimized integration into OEM end-user modules. TW1500 Dimensions (mm)
TW1500 Dual Feed Embedded Globalstar® Antenna Specifications Over full bandwidth, T=25°C Antenna Architecture Dual, quadrature feeds Antenna Gain (100mm ground plane) 4.25dBic Axial Ratio (over full bandwidth) ≤3dB 1.0 dB Bandwidth 1600MHz to 1630MHz Electrical Architecture Dual Feed Patch -> Hybrid 90° Combiner Polarization LHCP VSWR (at antenna) <1.5:1 typ. 1.8:1 max. Return Loss (-10 dB bandwidth) <-20MHz ESD Circuit protection 15KV air discharge Mechanicals & Environmental Mechanical Size 35mm dia. x 7.25mm Cable 1.38mm OD, 15cm. Custom lengths optional Operating Temp. Range -40°C to +85°C Weight 30g Attachment Method Adhesive or M2 screw mount Environmental RoHS 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
TW1500 – OEM Dual Feed Globalstar antenna, 33-1500-xx-yyyy Where xx = connector type and yyyy = cable length in mm Please refer to the Ordering Guide (http://www.tallysman.com/orderingguide.php) for the current and complete list of available connectors. Tallysman Wireless Inc
36 Steacie Drive
Tel +1 613 591 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. © 2011 Tallysman Wireless Inc. All rights reserved. Rev 3.1