32-2605-5

## A Tallysman _Accutenna™_ TW2605 Embedded Iridium™ Certified Antenna 

The TW2605 employs Tallysman’s unique Accutenna™ technology in an embedded, passive right hand circularly polarised antenna for the 1616 to 1626.5 MHz frequency band, certified and specially designed to maximise the performance of Iridium™ voice and data modems. 

The TW2605 features a high performance dual-feed patch element that provides great axial ratio (3dB max) over the entire Iridium™ frequency band, thus signals at the band edges remain truly circular, unlike the response of single feed antennas. 

TW2605 Dimensions (mm) 

The TW2605 provides excellent Iridium™ signal coverage, and comes in a compact circular form factor with a built-in 50 mm diameter ground plane. Standard coax cable is 15cm of RG174.  Custom tuning, cable length, and connectors are available on request. 

## **Applications** 

- Iridium™ Voice and Data Applications 

- Sea & Land Container Tracking 

- Military & Security 

- Fleet Management & Asset Tracking 

- Marine & Avionics Systems 

- Law Enforcement & Public Safety 

## **Features** 

- Custom high gain 4.25 dBic  dual-feed patch 

- Great axial ratio, 3 dB over full bandwidth 

- 15 KV ESD circuit protection 

- Robust design 

## **Benefits** 

   - Excellent circular polarized signal transmission 

   - Industrial temperature range 

   - Rugged Design 

   - RoHS compliant 

- Small form factor 

- Available application specific tuning 

## TW2605 Embedded Iridium™ Certified Antenna 

## **Specifications** 

Vcc = Over full bandwidth, T=25°C 

## **Antenna** 

Architecture Antenna Gain (100mm ground plane) Axial Ratio (over full bandwidth) Radiated Bandwidth (-0.5 dB) 

Dual, quadrature feeds 4.25 dBic ≤3 dB 1605 MHz to 1635 MHz 

## **Electrical** 

Architecture Frequency Bandwidth Polarization Cross Polarization Rejection Gain flatness VSWR (at antenna) Return Loss Bandwidth (10 dB return loss) ESD Circuit protection 

Hybrid 90° phase signal splitter 1616 to 1626.5 MHz RHCP typically 20dB ≤0.5 dB, from 1616 to 1626.5 MHz <1.5:1 >20 MHz 15 KV air discharge 

## **Mechanicals & Environmental** 

Mechanical Size Cable Operating Temp. Range Weight Attachment Method Environmental Shock Vibration 

50 mm dia. x 7.8 mm H RG174 / 15 cm, custom lengths optional -40 to +85 °C 100 g Adhesive or Screw Mount RoHS compliant Vertical axis: 50 G, other axes: 30 G 3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G 

## **Ordering Information** 

Legacy Part Number: TW2605 – Iridium™ antenna: 32-2605-xx-yyyy-zz Where xx = connector type,  yyyy = cable length in mm and zz = custom tuning number (assigned by Tallysman) 

* As a result of a growing product portfolio, Tallysman has rationalized its part number system.  No changes have been made to the mechanical or electrical properties of these products. Where administratively possible, please use the following Part Numbers. 

TW2605 – Iridium™ antenna, 33-2605-xx-yyyy-zz Please refer to the Ordering Guide (http://www.tallysman.com/orderingguide.php) for the current and complete list of available connectors. 

Tallysman Wireless Inc 106 Schneider Road, Unit 3 Ottawa ON K2K 1Y2 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. © 2011 Tallysman Wireless Inc.  All rights reserved. Rev 3.1