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SPITFIRE low profile Ku-band Satcom terminal

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<strong>SPITFIRE</strong> <strong>low</strong> <strong>profile</strong> <strong>Ku</strong>-<strong>band</strong><br />

<strong>Satcom</strong> <strong>terminal</strong><br />

Cobham Technical Services<br />

Antenna and Electronic Systems<br />

The most important thing we build is trust


<strong>SPITFIRE</strong> <strong>low</strong> <strong>profile</strong> <strong>Ku</strong>-<strong>band</strong><br />

<strong>Satcom</strong> <strong>terminal</strong><br />

Cobham Technical Services<br />

Antenna and Electronic Systems<br />

Agencies providing defence and emergency<br />

services are increasingly reliant on mobile<br />

communications. Traveling rapidly over large<br />

areas, mobile units require real time, agile,<br />

communication systems for voice, data,<br />

image and video. Land systems must operate<br />

during all vehicle manoeuvres, and should be<br />

unaffected by the type of terrain encountered;<br />

airborne systems must operate in severe<br />

environmental conditions and meet demanding<br />

certification requirements. In order to meet<br />

these demands, Cobham has developed a<br />

family of <strong>Satcom</strong>-On-The-Move <strong>terminal</strong>s<br />

ensuring unequalled access to commercial<br />

and military satellites.<br />

The <strong>SPITFIRE</strong> <strong>low</strong> <strong>profile</strong> <strong>Ku</strong>-<strong>band</strong> <strong>terminal</strong> is<br />

designed for the most demanding land and<br />

airborne applications. The antenna’s <strong>low</strong> <strong>profile</strong><br />

and <strong>low</strong> mass make it suitable for installation<br />

on small business jets and UAVs, commercial<br />

and military aircraft and a wide range of land<br />

vehicles including HUMVEEs and SUVs.<br />

System description<br />

The highly integrated <strong>terminal</strong> includes the<br />

antenna, a 2-axis gear drive positioner and<br />

servo controller, an autonomous tracking<br />

receiver and an inertial navigation unit. A <strong>low</strong><br />

noise amplifier, block up and down converters<br />

and a high efficiency solid state power amplifier<br />

are also included, housed under a common<br />

radome above the deck.<br />

A simple L-<strong>band</strong> I/O and an RS232 interface<br />

together provide direct interface with<br />

standard modem systems, while also enabling<br />

control and monitoring of the system through<br />

a laptop computer.<br />

The operational schemes supported by<br />

<strong>SPITFIRE</strong> <strong>terminal</strong>s are SCPC and FDTDMA<br />

in star and mesh networks, DSSS multiple<br />

access and combined DSSS-TDMA (e.g. i-Direct)<br />

multiple access in star & mesh networks.<br />

Key features<br />

• Designed for both land<br />

and airborne applications<br />

• Increased data rates in<br />

transmit mode compared to<br />

equivalent circular reflectors<br />

• Low <strong>profile</strong> and <strong>low</strong> mass<br />

• Short acquisition and<br />

reacquisition time<br />

• Hemispherical coverage,<br />

with excellent RF<br />

performance at <strong>low</strong><br />

elevation scanning angles.


RF specifications TX RX<br />

Operating frequency <strong>band</strong> 13.75 - 14.5GHz 10.95 - 12.75GHz<br />

Input return loss 10dB minimum 10dB minimum<br />

Isolation between TX and RX ports TX <strong>band</strong>


Mechanical specifications & Power Supply Land Mobile Aeronautical<br />

Weight 40kg (88lbs) 50kg (110lbs)<br />

Antenna Sub-System footprint,<br />

including radome<br />

965mm (38’’) diameter<br />

1.65m (65’’) long x 1m (40”) wide<br />

Antenna Sub system height,<br />

200mm (8’’) max<br />

including radome<br />

Power Supply - 18-36V DC, to operate in accordance with MIL-STD-704E<br />

225mm (9’’) max<br />

Peak EIRP based on 20W integrated high power amplifier<br />

Minimum antenna gain (including radome and antenna losses)<br />

32.2 dBi, down to 20 0 elevation<br />

Cable losses (dB) -0.7<br />

HPA Output (dBW) 13<br />

Peak EIRP (dBW) 44.5<br />

REGULATORY CONSTRAINTS (Power spectral density based on dBW/40kHz)<br />

Peak EIRP/Hz that can be radiated while meeting the sidelobe templates defined be<strong>low</strong>. These are based on a satellite due south of the<br />

mobile <strong>terminal</strong> and must be reduced as the satellite longitude changes relative to the mobile. Further details can be provided on request.<br />

Compliant with ITU-R S728 for 2 0 satellite spacing (25-25log (θ), from 2 0 ) Up to 34dBW/40kHz<br />

Compliant with ETSI 302 186 (33-25log (θ), from 2.75 0 ) Up to 44dBW/40kHz<br />

Compliant with Eutelsat Standard M (39-25log (θ), from 2.75 0 ) Up to 50dBW/40kHz<br />

Specifications are subject to change without notice. Please contact Cobham Technical Services - to confirm the specifications.<br />

For further information please contact:<br />

David Thombs<br />

Director, Advanced Technology<br />

Sensor Electronics<br />

Cobham Sensor Systems<br />

58 Main Street,<br />

Bolton MA USA.<br />

FM1303<br />

www.cobham.com/technicalservices<br />

Tel: (978) 549-1828<br />

Fax: (978) 779-2906<br />

Email: David.Thombs@cobham.com<br />

ERA Technology Limited trading as Cobham Technical Services

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