Cobham Antenna Systems, Microwave Antennas
News
2004-07
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AIRDATA AG, Stuttgart, launch fast, portable Internet access using newly designed omni antennas and base stations
System and antennas are compliant to ETSI standards, sanctioned by RegTP
AIRDATA AG offers a portable way of accessing the Internet using new 3G standards. Their new system has completed a successful trial and the Internet can be used wirelessly in almost every part of Stuttgart, at DSL speeds. Using a modem the size of a mobile phone, the system works in a similar way to WiFi.
This has been made possible by a network built by AIRDATA that allows both voice and data transmission. The network uses a system that is based on worldwide harmonised 3G radio standards. Compared to WLAN, the network allows greater coverage, creating 'hot-zones'. In addition, the user does not need subscriptions with multiple providers nor have to pay additional usage fees that WLAN hotspots currently require. The AIRDATA network is an alternative to fixed line services. |  |
Easy to install, the user inserts the SIM card into the modem, connects the Portable DSL modem to the computer and enters the user name and password. There is no need to connect to a phone outlet and there is no additional hardware or software. For the base stations, AIRDATA used omni and sector antennas developed by Cobham Antenna Systems (Microwave Antennas).The omni antennas are ETSI compliant, with high gain and low azimuth ripple. The antenna architecture means that the elements are fed in the centre of the array to ensure that the main beam remains on the horizon at every frequency across a wide bandwidth.The sector antennas have dual slant polarisation (±45°) over 2.5 to 2.7GHz and are compliant to ETSI EN301-525 Class CS standards and sanctioned by RegTP, the German equivalent of Ofcom, the UK communication industry regulator. The challenge in the development of this antenna was that it had to meet ETSI EN301-525 Class CS standards in order that RegTP approval could be granted for the entire system.
www.airdata.de
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