Jonathan Ethier

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The theory of characteristic modes has been given in [1] for perfectly conducting objects. If we use a moment method formulation such as [2] to model a conducting structure, with N of the RWG expansion functions used, the EFIE is converted into a matrix equation [Z][J]=[V]. Column vector [J] contains the coefficients of the expansion functions for the(More)
The characteristic modes of perfectly conducting objects computed using modified Green's functions are classified and demonstrated to be the same as sub-structure characteristic modes. We indicate the advantage of the sub-structure viewpoint, and that the idea is easily extended to include lossless dielectric objects as the “rigid” member of(More)
A new technique for the shape synthesis of antennas that are of electrically small or intermediate size was described in preliminary form. Its use of characteristic mode based objective functions allows it to achieve one thing not possible with other shape synthesis methods proposed thus far, namely that we optimize the geometry before defining the(More)
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