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In this paper, it is illustrated how to carry out adaptive processing simultaneously at multiple frequencies using the same antenna array consisting of dissimilar antenna elements nonuniformly spaced and deployed above an imperfect ground plane. First, an electromagnetic transformation technique is described which can compensate for all non-ideal effects of an antenna array deployed in a real environment,...
In this paper, the distinction between Zenneck waves and surface plasmon polaritons is illustrated. Both are evanescent waves. The surface plasmon needs to be excited by an electron beam which can be effectively generated by a source of electrons or a quasiparticle like an evanescent wave which can tunnel through the medium and thus excite the electrons. This electron wave produces its own electromagnetic...
In this paper, it is illustrated on how to carry out adaptive processing simultaneously at multiple frequencies using the same antenna array consisting of dissimilar antenna elements nonuniformly spaced and deployed in any environment. First, a transformation method is introduced to account for all non-ideal effects of an antenna deployed in a real environment, such as mutual coupling between the...
This paper illustrates a method to carry out adaptive processing simultaneously at multiple frequencies using the same antenna array located over imperfect ground planes. First, it is shown how to transform an array situated over an imperfect ground to a uniformly spaced array of point radiators. Then, a direct data domain least squares (D3LS) method is used to extract the signal-of-interest (SOI)...
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