Abstract
Excitation of surface waves on a reactive surface by a finite vertical aperture is considered in this paper. A valid method of computing the surface wave excitation efficiency is presented firstly. Then the maximum excitation efficiency and corresponding aperture height as a function of surface reactance is obtained. Even including the reflection wave power, the maximum excitation efficiency can reach ∼95% when the surface reactance (X s ) is j250Ω. These results are useful for selecting a suitable surface reactance X s and designing a high efficient surface wave aperture transducer.
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