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Control of radar scattering by reactive loading

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2 Author(s)
R. Harrington ; Syracuse University, Syracuse, NY, USA ; J. Mautz

A method for obtaining a desired radar scattering pattern by reactively loading a conducting body is given. The theory uses the concept of characteristic modes of a loaded body. Any desired real current can be resonated by reactive loads to make it the dominant mode current of that body. If no other mode is near resonance, the radar scattering pattern becomes nearly the same as the radiation pattern of the resonated current. A quality factor Q is defined as a measure of the broadband behavior of a scatterer. Procedures for computing the real currents having minimum Q and maximum gain-quality ratio are given. A pattern synthesis procedure is developed for obtaining the real current whose radiation field pattern is the least mean-square approximation to a desired field pattern. Numerical examples are given for each procedure discussed.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:20 ,  Issue: 4 )