A high gain Fresnel zone plate reflector is presented for helicopter collision avoidance radar at 94 GHz. The antenna system consists of a compact, airtightness and low return loss primary source illuminating a printed reflector with Fresnel plate zone phase correction. In order to increase the overall efficiency, the reflector combines 8 correcting zones in its center and 4 on the border. Reflected phase of over 360 deg is achieved by means of circular ring or combined circular and ring patches. The reflector is fabricated using standard photolithographic techniques. The primary source consists of a small FSS made by a double slot array antenna pasted on the aperture of a standard WR-10 waveguide. Antenna measurements were conducted using a compact base arrangement. The antenna performs 37.8 dBi at the center frequency of 94 GHz with a maximum value of the return loss value not exceeding -25 dB. The frequency bandwidth at -3 dB in gain and return loss is of 9%.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    W-band Fresnel zone plate reflector for helicopter collision avoidance radar


    Contributors:
    Nguyen, B.D. (author) / Migliaccio, C. (author) / Pichot, C. (author) / Yamamoto, K. (author) / Yonemoto, N. (author)

    Published in:

    Publication date :

    2007


    Size :

    5 Seiten, 23 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Fresnel Reflector Antennas for MM-Wave Helicopter Obstacle Detection Radar

    Migliaccio, C. / Nguyen, B. D. / Pichot, C. et al. | British Library Conference Proceedings | 2006


    Offset paraboloidal reflector antenna for vehicular collision avoidance radar

    Honma,S. / Takahara,T. / Akasu,M. et al. | Automotive engineering | 1999


    Offset Paraboloidal Reflector Antenna for Vehicular Collision Avoidance Radar

    Honma, S. / Takahara, T. / Akasu, M. et al. | British Library Conference Proceedings | 1999


    Offset Paraboloidal Reflector Antenna for Vehicular Collision Avoidance Radar

    Akasu, Masahira / Honma, Shinichi / Sato, Shinichi et al. | SAE Technical Papers | 1999


    Dual-band Fresnel zone plate antennas [3062-23]

    Wiltse, J. C. / SPIE | British Library Conference Proceedings | 1997