(On the left) A portion of a Penrose aperiodic tiling and its corresponding antenna array element locations.
(On the right) A wideband planar array design that was generated by optimizing a perturbed Penrose tiling array.
Illustration of the basic inflation process for the Danzer aperiodic set.
(On the left) The three prototiles of the aperiodic set and their edge matching conditions.
(In the middle) The first iteration of the inflation process involves decomposing each prototile into a collection of tiles.
(On the right) The second iteration involves further decomposing each tile based on the rules from the first iteration. Large tilings are formed as this iterative process is repeated.
Radiation patterns for the two components of the interleaved antenna array system. The component array steered to +60\B0 has a minimum interelement spacing of 4.0λ while the component array steered to -30\B0 has a minimum interelement spacing of 8.0λ. The peak side-lobe level of the system is -16.28 dB under these conditions. The right side of the figure illustrates the entire radiation pattern sweep while the left side of the figure shows more detail of the main beam at -30\B0.
Selected portion of a Danzer aperiodic tiling.
Side-lobe level performance of the optimized polyfractal arrays over a range of bandwidth compared to the performance of a periodic linear array. Each polyfractal array was optimized at broadside for simultaneous minimum spacings of 0.5λ and 3.0λ (i.e. fo and 6fo).
Illustration of the rapid recursive beamforming algorithm for a two generator polyfractal array.
Design of Broadband Planar Arrays Based on the Optimization of Aperiodic Tilings
Interleaved Ultrawideband Antenna Arrays Based on Optimized Polyfractal Tree Structures
Ultrawideband Aperiodic Antenna Arrays Based on Optimized Raised Power Series Representations
Nature-Inspired Design Techniques for Ultra-Wideband Aperiodic Antenna Arrays
Analysis and Design Optimization of Robust Aperiodic Micro-UAV Swarm-Based Antenna Arrays
Design of Ultra-Wideband, Aperiodic Antenna Arrays With the CMA Evolutionary Strategy
A Review of High Performance Ultra-Wideband Antenna Array Layout Design