This paper describes a method for the synthesis of linear aperiodic antenna arrays with beam scanning capability. The algorithm is based on a recently proposed Gaussian approach, regarding linear aperiodic arrays of isotropic elements with uniform amplitude distribution, which yields the optimal element positions of the array in such a way as to form a Gaussian beam of prescribed properties. The latter approach is here extended to solve a problem of beam scanning in an angular region of interest. Precisely, the array element positions are determined in such a way as to form a pencil beam, that can be pointed in any direction of the angular region of interest by a suitable distribution of the excitation phases. Thus, a continuous beam scanning can be performed by phase-only control. It is also shown that the alternating projection approach can mitigate the pattern degradation that arises for pointing angles near the end-fire direction.
Titolo: | Gaussian approach for the synthesis of phase-only beam-scanning linear aperiodic antenna arrays |
Autori: | |
Data di pubblicazione: | 2019 |
Data ahead of print: | 8-giu-2019 |
Stato di pubblicazione: | Pubblicato |
Rivista: | |
Abstract: | This paper describes a method for the synthesis of linear aperiodic antenna arrays with beam scanning capability. The algorithm is based on a recently proposed Gaussian approach, regarding linear aperiodic arrays of isotropic elements with uniform amplitude distribution, which yields the optimal element positions of the array in such a way as to form a Gaussian beam of prescribed properties. The latter approach is here extended to solve a problem of beam scanning in an angular region of interest. Precisely, the array element positions are determined in such a way as to form a pencil beam, that can be pointed in any direction of the angular region of interest by a suitable distribution of the excitation phases. Thus, a continuous beam scanning can be performed by phase-only control. It is also shown that the alternating projection approach can mitigate the pattern degradation that arises for pointing angles near the end-fire direction. |
Handle: | http://hdl.handle.net/11368/2945213 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.sigpro.2019.06.012 |
URL: | https://www.sciencedirect.com/science/article/pii/S0165168419302208 |
Appare nelle tipologie: | 1.1 Articolo in Rivista |
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