A Multiple-Beam Scanning Circular Array

• Main Authors: Chadwick, George G., Glass, John C., Hill, Jerome E.
• Other Authors: Radiation Systems, Inc.
• Language: en_US
• Published: International Foundation for Telemetering 1965
• Online Access: http://hdl.handle.net/10150/578453

International Telemetering Conference Proceedings / May 18-20, 1965 / Sheraton Park Hotel, Washington DC === The geometry of the cylindrical array has always been appealing to system designers because of its ability to provide 360° of coverage. A technique will be discussed which allows a cylindrical array to provide high-resolution coverage over 360° of azimuth angle. When used as a scanning array, a beam may be swept through 360° by using any of the numerous techniques available for scanning a linear array. When used to provide multiple beams, an array of N elements is excited by N isolated inputs. Each input corresponds to a beam in a selected direction; all of the N beams being disposed uniformly over 360° of azimuth angle. In both the instance of the scanning array and the multiple-beam array, the resolution achieved is comparable to that available from a planar aperture of the same height and with a length equal to that of the cylinder diameter. The theory of operation for the cylindrical array is discussed in abridged form. Data are also presented for experimental four-, eight-, and sixteen-element cylindrical arrays.