SUMMARYThis paper considers an adaptive array antenna in which multiple parasitic elements are placed in concentric circles with the radiating element as the center, and the outputs of the parasitic elements are connected to open, shorted, or fixed loads, so that the directivity can be controlled adaptively. The number of circular arrays, the number of parasitic elements in a circular array, the radius of the circular array, and the value of the fixed load are investigated. All combinations of three arrival wave angles are considered in the horizontal plane within the range of adaptive beam forming. All combinations of load settings are investigated. The design parameters are investigated on the basis of the achieved cumulative SINR distribution function. We find that SINR values above 10 dB can be expected in an environment with up to two interfering waves by constructing an aperture with one circular array with a radius of 0.5λ containing 10 parasitic elements.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.