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Cobham Antenna Systems, Microwave Antennas

UAV and Ground Vehicle Antenna Systems

Antennas developed and built for UAV and Ground Vehicles, Link16, Electronic Warfare, COFDM, Direction Finding, C-Band, Vehicle-mounted, and Missile Telemetry.

Cobham Microwave Antennas develop and manufacture high specification antennas between 100MHz and 28GHz - Sector and Multi Sector, Directional flat panel, extended performance Omni-directional and Ultra Wideband (UWB) antennas - for Military, Defence, Security and Satellite applications. Robust and proven, our antennas are used by leading businesses worldwide.

Applications include:

  • Tactical Comms: Link16, Point-to-Point, Point-to-Multipoint, Man-Pack
  • Electronic Warfare: IED Countermeasures, Wideband Spirals and Omnis, DF, Jamming
  • Unmanned Systems: Data and Control Links, Robotics, Ground Based Radio
  • Radar: Portable and Fixed, Stripline, Waveguide, FMCW, Pulse, Reflectometer
  • Missile/Munitions: Conformal, Fuse Programming, Ground and Airborne, Telemetry, Command and Control, Override and Abort
  • C-Band: COTS Directional, Sector and Omni antennas 
  • Security: COFDM, Vehicle Telemetry, Fixed and Mobile WLAN

Antenna development projects are undertaken for customers, plus there are more than 1500 existing antenna designs available. All activities are carried out on-site at our development engineering plant, anechoic test chamber and manufacturing facility.

European Antennas Ltd, trading as Cobham Antenna Systems, Microwave Antennas, is an ISO9001 and ISO14001 accredited company.

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Tactical Communications Antennas: Link16 Ground to Air

The Link16 protocol uses frequency bands that cover 960-1215MHz. This range of extended performance, wideband omni antennas has been designed for use in Link16 systems for terrestrial and naval applications communicating with airborne platforms. Antennas can be incorporated in to MIDS, JTRS and JTIDS systems for high data rate transmission.

Model XVO7-960-1215/1120 (NATO Stock Number 5985-99-7586585) is a high power, high gain (7dBi) omni antenna that has been used ground to air communications. For marine applications, the ideal antenna would be robust model OA7-1090V/1328 which was developed for use on an ice breaker.

Sector antennas generally have a much higher gain than omni antennas enabling them to have a far longer range. Combinations of three 120° sector antennas, or two 180° sector antennas, provide long range, wide area, all round coverage.   Individual sector antennas may allow the operator to concentrate the signal within a particular region where the requirement is most critical.  These sector antennas have high power.

All Link16 antennas are rugged, designed for extreme weather and temperature and have been used in battlefield conditions without affecting the performance or inhibiting mission requirements.

Cobham Antennas Link16 leaflet available to download.

Cobham Antennas Link16 Case Study with the Royal Australian Navy

 

UAV and Ground Vehicle Antenna Systems
Omni antenna XVO7-960-1215/1120 with 7dBi gain for ground to air Link16 communications.

Electronic Warfare: IED Countermeasures, DF, Jamming

Electronic Warfare (EW) is the use and denial of the RF spectrum to the enemy. It encompasses long term tactical Intelligence Gathering (ELINT) and the protection of high value assets such as aircraft and ships. In modern warfare the protection of vehicles and foot-soldier from RF activated IEDs is critical.

EW has two distinct branches:

  • Receiving and analysing the threat
  • Counteracting the threat by transmission of a high power jamming signal

All antennas used in EW systems must have wide, instantaneous bandwidth.

Ultra wideband omni and directional antennas can be used for many systems, for foot-soldiers marine, land-vehicle or helicopter. Having detected RF signals associated with threats (missile, radar or IED), one possible evasive action is to deny use of the RF spectrum by countering (jamming) with appropriate levels (1 to 500 Watts) of microwave energy at the same frequencies. If the direction of the threat is known a directional high power, high gain antenna would be most appropriate. If the direction is unknown then an omni antenna can provide 360° coverage.

Cobham Antennas EW leaflet available to download.

 

UAV and Ground Vehicle Antenna Systems
Omni Antennas mounted on military vehicle for mobile Wireless LAN

Unmanned Systems: Data and Control Links, Robotics, Ground

Based Radio

Airborne surveillance, video transmission, border patrol and tactical systems - in all cases uninterrupted communication to the control centre is vital. 

As the demand for Unmanned Systems has increased, Cobham has developed antennas for payloads, data communications systems, command and control. A range of standard, cost-effective, entry-level COTS antennas are already used in extreme environments. 

As frequencies increase from L-band to Ku-band to provide wider bandwidths to enable higher data rates, the selection of the right antenna is critical to ensure system performance, long battery-life and transmission range. High gain omni antennas are installed in aerodynamic foil structure. Directional antennas for communicating between airborne target and towing aircraft.

Antennas are provided for both ends of the link between control centre and remote vehicle. The ground based antenna usually provides the higher gain part of the link and can be a medium to high gain omni, medium gain sector or a high gain directional antenna. A directional antenna is likely to require a two-axis steering system which may be expensive to implement. A less complex but compact multi-sector antenna array provides intermediate range coverage for communicating with a UV. 

Cobham Antennas UAV leaflet available to download.

UAV and Ground Vehicle Antenna Systems
The Boeing Company working prototype of the X-48B blended wing vehicle features blade antennas designed and built by Cobham. Used as part of the telecommand, telemetry and AV system, each antenna covers a different frequency.

C-Band, 4.7GHz COTS Directional, Sector and Omni antennas

Many countries have adopted the C-band frequency range for high data rate point-to-point or point-to-multipoint applications. 

The restrictive use of this band ensures a greater level of security. Commercially available radio systems based on WLAN and WiMAX technologies can be used in conjunction with our antennas, enabling systems to be developed rapidly. 

We have a catalogue of C-band directional, sector and omni antennas. New MIMO dual-polar Sector and Directional Antennas are now available.

Since this band has dual-use - commercial and military applications - we have used commercial technology in the design of antennas providing robust construction with aluminium housings and glass fibre radomes. 

Panels and sector antennas are extremely slim for a discreet appearance.  Most are available in white, tan, olive green or black.  Full technical and radiation pattern information is available for all antennas.

Cobham Antennas C-Band leaflet available to download.

UAV and Ground Vehicle Antenna Systems
C-band, high gain 26dBi, directional panel antenna FPA26-47V/1157 with vertical polarisation.
Contact Company

Address

Cobham Antenna Systems, Microwave Antennas
Lambda House
Cheveley
Newmarket
Suffolk
CB8 9RG
UK
Tel: +44 1638 732177
Fax: +44 1638 7321999
Email: newmarket.sales@cobham.com
URL: www.european-antennas.co.uk/markets-military.php
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Press Releases

05/05/2017 UAV and Ground Vehicle Antenna Systems Countering the Unlawful Use of Drones More
15/12/2016 UAV and Ground Vehicle Antenna Systems Cobham Introduces Two Ultra-Wideband Gooseneck Antennas More