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AssigneeThales
InventorsAdrien Glise, Isabelle Le Roy-Naneix, Stefan Varault, Grégoire Pillet, Christian Renard
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An array antenna (A) in a medium (M) comprises a plurality of radiating elements (ERT) ensuring the transition between the antenna and the medium, the reflectivity of each element depending on a parameter, the reflectivity of a first element being close to that of the medium, the reflectivity of a last element being close to that of the antenna, the reflectivity parameter of the elements varying from one element to the next. A method comprises calculation of a path equal to the sum of the variations of the reflectivity from one element to the next element, optimization of the variation of the reflectivity parameter so that equivalent radar cross-section of the antenna is the lowest possible or the antenna best observes the radiation objectives, determination of the different elements as a function of said parameter, and simulation of the overall reflectivity and/or of the radiation of the antenna.
A method for incorporating an array antenna (A) in a medium (M), said array antenna comprising a plurality of radiating elements (ERT) ensuring a progressive transition of reflectivity between the array antenna and the medium, reflectivity of each radiating element depending on at least one parameter, the reflectivity being represented by a complex number, said at least one parameter varying from one radiating element to the next, wherein the method comprises the following steps:
An array antenna intended to be incorporated in a medium, said array antenna comprising a plurality of radiating elements ensuring a progressive transition of reflectivity between the array antenna and the medium, reflectivity of each radiating element depending on at least one parameter, the reflectivity being represented by a complex number, that wherein said at least one parameter varies from one radiating element to the next, the rate of variation defined by the derivative of the reflectivity in the complex plane with respect to said at least one parameter being minimal between the first radiating element and the next radiating element, minimal between the last radiating element and the preceding radiating element and maximal between the two radiating elements furthest away from the first radiating element and from the last radiating element.
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