Ees / Git Project a - 2115 360 - Degree Scanning Antenna Development
نویسندگان
چکیده
A design study has been performed for a lightweight, cylindrical array antenna for a hostile-mortar-locating radar system. A mathematical model of the array was developed which permitted tradeoff studies to be made of various array parameters. Data computed using the model compared very well with experimental and other theoretical data. Critical components of the array were built and tested and shown to perform satisfactorily, and a design for the array was developed for operation at Ku-band frequencies. The antenna beam is capable of scanning 360 ° in azimuth and from +3° to +6 ° in elevation, and the estimated weight of the entire antenna is 78 pounds. The proposed antenna comprised (a) a cylindrical radiating structure composed of broadwall slots in dielectrically-loaded rectangular waveguide, (b) dielectric wedge transitions from dielectrically-loaded waveguide to parallel plates, and (c) a rotating geodesic lens for collimation of the feedhorn energy and scanning of the far-field beam.
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