Design of Concentric Ring Antenna Arrays Based on Subarrays to Simplify the Feeding System
Open Access
Abstract
The global synthesis for antenna arrays that produce a desired radiation pattern is a scientific symmetry problem. This paper deals with the design of concentric ring antenna arrays to simplify the feeding system using a cophasal subarray configuration. This simplification in the feeding network is achieved by the reduction of phase shifters via a proper clustering of radiators applying one amplitude and one phase excitation by subarray in the array system. The array design for this geometry considers an optimization process based in differential evolution to reduce the side-lobe level, resulting in simplification of the feeding network. Simulation results based on CST Microwave Studio and HFSS are provided to verify the accuracy of the array model and to take mutual coupling into account. These simulations are provided using a circular patch as antenna element to generate a scannable array pattern over the elevation plane. Furthermore, an analysis of the manufacturing tolerances was made to verify the reliability of our design.Keywords
Funding Information
- Secretaría de Ciencia, Humanidades, Tecnología e Innovación (2016-01-1680)
This publication has 29 references indexed in Scilit:
- Random Feeding Networks for Reducing the Number of Phase Shifters in Limited-Scan ArraysIEEE Transactions on Antennas and Propagation, 2016
- Overlapped Subarrays: Review and Update [Education Column]IEEE Antennas and Propagation Magazine, 2013
- Sidelobe Reduction Through Element Phase Control in Uniform Subarrayed Array AntennasIEEE Antennas and Wireless Propagation Letters, 2009
- Irregular Polyomino-Shaped Subarrays for Space-Based Active ArraysInternational Journal of Antennas and Propagation, 2009
- Grating Lobe Reduction in a Phased Array of Limited ScanningIEEE Transactions on Antennas and Propagation, 2008
- Optimized Weighting of Uniform Subarrays of Unequal SizesIEEE Transactions on Antennas and Propagation, 2007
- Aperiodic array consisting of subarrays for use in small mobile Earth stationsIEEE Transactions on Antennas and Propagation, 2005
- An affordable millimeter-wave beam-steerable antenna using interleaved planar subarraysIEEE Transactions on Antennas and Propagation, 2003
- RF MEMS phase shifters: design and applicationsIEEE Microwave Magazine, 2002
- A low-sidelobe partially overlapped constrained feed network for time-delayed subarraysIEEE Transactions on Antennas and Propagation, 2001