Abstract

Experimentally measured spatial responses of linear scalar, vector-scalar, and combined antennas have been analyzed. A combined antenna consists of an extended scalar antenna and one or several vector-scalar modules. It is shown that a combined antenna, which multiplicatively processes signals (just like a vector-scalar antenna), suppresses reflection lobes and provides unidirectional reception (in comparison with a scalar antenna). At the same time, the side field level decreases, thus increasing noise immunity.

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