BEAMFORMING UNIT FOR SUB-ARRAY OF DECAMETER AND METER WAVE RADIO TELESCOPE GURT
Journal: Radio physics and radio astronomy
Year: 2014

A beamforming device for a 5×5-element subarray of receiving phased antenna array of new GURT radio telescope designed to operate within 10 − 70 MHz is presented. The device is composed of six identical units. Each unit contains equal-arm 5:1 combiner with connected to its arms discrete phase shifters based on time delay lines switching principle. Five of these units combine the signals of array elements inside rows of the subarray, whereas the sixth one assembles the combined signals of subarra