Improvement of Edge Brightening by Means of Q Factor Minimization in Circular Antenna Apertures: High Efficient Taylor-like Patterns

• Published in: IEEE access 2020-01, Vol.8, p.1-1
• Main Authors: Salas-Sanchez, Aaron A., Rocca, Paolo, Rodriguez-Gonzalez, J. Antonio, Lopez-Martin, M. Elena, Ares-Pena, Francisco J.
• Format: Article
• Language: English
• Subjects: <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">Q factor; Antenna arrays; Antenna design; Antenna radiation patterns; Antennas; Apertures; Brightening; Circular Taylor distributions; Directivity; edge brightening; Efficiency; Minimization; Optimization; optimization techniques; Q factor; Q factors; Sidelobes; super gain ratio
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2020.3029402

Implications and improvements of edge brightening effects led by Q factor minimization restricted to keep the same level of directivity for high efficiency continuous circular aperture distributions are here reported. In this manner, an optimization strategy for a minimum Q value -keeping the same level of efficiency and restricting the maximum sidelobe level (SLL)- is envisaged. As application of the method, a design procedure devoted to reduce the Q factor of the antenna aperture distributions while keeping a high level of efficiency is outlined. Then, these optimal Taylor distributions are used as initial point to develop an optimization strategy. This procedure is devoted to search Taylor-like distributions which offer a good compromise between low Q factor and high efficiency values with potentials for the antenna design scenario, based on a decrease in edge brightening effects led by the minimization of the aforementioned Q ratio.