Coherently Radiating Periodic Structures to Reduce the Number of Phase Shifters in a 2-D Phased Array

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. Three design configurations using CORPS are proposed for 2-D phased arrays. 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. 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. 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. 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 ±25° in elevation and ±40° in azimuth. 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.

[1]  Gabriel M. Rebeiz,et al.  Random Feeding Networks for Reducing the Number of Phase Shifters in Limited-Scan Arrays , 2016, IEEE Transactions on Antennas and Propagation.

[2]  Gabriel M. Rebeiz,et al.  Interwoven Feeding Networks With Aperture Sinc-Distribution for Limited-Scan Phased Arrays and Reduced Number of Phase Shifters , 2018, IEEE Transactions on Antennas and Propagation.

[3]  Kamal Sarabandi,et al.  An affordable millimeter-wave beam-steerable antenna using interleaved planar subarrays , 2003 .

[4]  Gabriel M. Rebeiz,et al.  Limited Scan-Angle Phased Arrays Using Randomly Grouped Subarrays and Reduced Number of Phase Shifters , 2020, IEEE Transactions on Antennas and Propagation.

[5]  Marco A. Panduro Mendoza,et al.  An Innovative Way of Using Coherently Radiating Periodic Structures for Phased Arrays With Reduced Number of Phase Shifters , 2022, IEEE Transactions on Antennas and Propagation.

[6]  D. Betancourt,et al.  A Novel Methodology to Feed Phased Array Antennas , 2007, IEEE Transactions on Antennas and Propagation.

[7]  Da-Gang Fang,et al.  Grating Lobe Reduction in a Phased Array of Limited Scanning , 2008, IEEE Transactions on Antennas and Propagation.

[8]  N. Toyama,et al.  Aperiodic array consisting of subarrays for use in small mobile Earth stations , 2005, IEEE Transactions on Antennas and Propagation.

[9]  J. C. da S Lacava,et al.  Design of Arrays of Linearly Polarized Patch Antennas on an FR4 Substrate: Design of a probe-fed electrically equivalent microstrip radiator. , 2015, IEEE Antennas and Propagation Magazine.

[10]  Rahim Tafazolli,et al.  Design of Phased Arrays of Series-Fed Patch Antennas With Reduced Number of the Controllers for 28-GHz mm-Wave Applications , 2016, IEEE Antennas and Wireless Propagation Letters.

[11]  M. A. Panduro,et al.  An approach for simplifying a multiple beam-forming network for concentric ring arrays using CORPS , 2014 .

[12]  Ban-Leong Ooi,et al.  Broad-banding technique for in-phase hybrid ring equal power divider , 2002 .

[13]  R. Bansal,et al.  Antenna theory; analysis and design , 1984, Proceedings of the IEEE.

[14]  Dan Wang,et al.  The Pareto rank algorithm for the division of the sub arrays for the phase array radar , 2016, 2016 9th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI).

[15]  Marco A. Panduro,et al.  Simplifying the feeding network for multi-beam circular antenna arrays by using corps , 2011 .

[16]  Vladimir V. Denisenko,et al.  Grating Lobe Suppression in Aperiodic Phased Array Antennas Composed of Periodic Subarrays with Large Element Spacing , 2015, IEEE Antennas and Propagation Magazine.