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The near field behaviour of two different types of retrodirective antenna arrays are presented. For each type it is shown that retrodirective properties can be preserved well into the antenna array near field. To our knowledge for the first time it is shown that distortions arising in the radiation pattern of each array type primarily occurs due to the effect of the individual radiation pattern characteristics...
This paper presents an extended FDTD method that can treat phased shifted infinite 3D arrays with arbitrary pulsed excitation by modelling a single array element. The paper starts by considering the structure of fields on periodic media in the time domain. For the phased array (or a dichroic surface) under non-normal incidence, the scattered field appears to be periodic in a 4 dimensional basis. A...
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