However, more study and analysis is required to generate new and more design configurations with different antenna array geometries to simplify the beamforming network by reducing the number of PS with a wide range of beam-scanning and low SLL. The design technique presented in illustrated the reduction of PS devices for linear phased arrays using CORPS. Although these previous works deal with the application of CORPS for different antenna array geometries, the evaluation and proposal of new design techniques for reducing the PS devices are still scarce. Furthermore, the CORPS technique has been applied successfully in several previous studies for simplifying the beamforming network in different antenna array geometries. This technique reduces the number of PS devices for limited scan-angle phased arrays. The subarrays technology considers randomly grouped subarrays in linear and planar arrays for a reduced number of PS. The state of art includes two recent techniques for simplifying the number of phase shifters (PS): the subarrays technology and the CORPS technology (coherently radiating periodic structures). The application of the raised cosine amplitude distribution could generate radiation patterns with a SLL_PEAK ≈ −19 dB and SLL_PEAK ≈ −23 dB for the design proposed configurations in all the scanning range. The full-wave simulation results for the proposed configurations in 2-D phased arrays provide a reduction in the number of PSs of until 69% for a scanning range of ☒5° in elevation and ±40° in azimuth. These design configurations used for feeding the antenna elements in the planar array geometry provide several advantages with respect to others in the scanning capability and the reduction of the number of PS devices of the array system. Blocks of 2 × 3 and 4 × 7 CORPS networks depending on the configuration in the 2-D phased array are set strategically in the feeding network to generate the cophasal excitation required in the antenna elements. The design model of phased array for these configurations considers the cophasal excitation required for this structure to set a strategic way for feeding the antenna elements and reducing the number of PS devices. Three design configurations using CORPS are proposed for 2-D phased arrays. This paper illustrates the application of CORPS (coherently radiating periodic structures) for feeding 2-D phased arrays with a reduced number of phase shifter (PS) devices.
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