Telematic systems are a key technological component of future, intelligent road networks. Such systems offer increased road efficiency (re-routing or traffic in response to traffic density and weather), increased safety (collision warnings, pre-collision airbag deployment and assistance for disabled users) and improved communications or entertainment services (in-car office with internet access). Roadside to vehicle (RVC) or inter-vehicle communication (IVC) links are likely to be key elements. Implementation of telematic systems will require demonstration of a number of mm-wave technologies at an acceptable price per unit. These technologies include antenna, beamformer and transmit/receive module components. The FATCAT (Future Antenna Technologies for Cars and Trucks) collaborative program is investigating some of the antenna technologies required to build low cost mm-wave telematic systems. This paper describes the design, manufacture and demonstration of a variety of antennas for 63 GHz transmissions. The designs have incorporated current knowledge of propagation effects and likely RF source performance to identify the antenna requirement at 63 GHz. Alternative antenna architectures have been considered. Also, the antenna might be required to provide steered/switched beam radiation patterns to maintain links to moving vehicles and to compensate tor signal fading in a complex and dynamic multipath environment. The paper describes additional mm-wave components, such as couplers, phase shifters and switches, required tor antennas with switched beam capability. The future use and development of road networks has become an important political issue in many countries. In the UK, the Highways Agency and the Department of Trade and Industry (DTI) are actively investigating the development of 'intelligent road networks' to increase the efficiency of road use. Such networks might use a variety of sensors, both road and vehicle mounted, to increase road efficiency and provide additional services to drivers and travellers. Benefits might include -Reducing road congestion, -Reducing accident rates/severity, -Increasing mobility for an aging populations, -Providing accident information to emergency services, -Proving information/entertainment services to drivers and passengers.


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    Title :

    Radio technologies for future telematic systems for foresight vehicles


    Additional title:

    Radiotechnologien zukünftiger Telematiksysteme in voraussehenden Fahrzeugen


    Contributors:
    Pirollo, B.P. (author) / Okon, E. (author) / Lewis, R.A. (author) / Gardner, P. (author) / Ma, G. (author) / Piel, G. (author) / Flamini, L. (author) / Hall, P.S. (author) / Davies, K. (author)


    Publication date :

    2002


    Size :

    6 Seiten, 10 Bilder, 1 Tabelle, 1 Quelle




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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