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Constructing the phase converters consisting of arbitrary number of translucent surfaces

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3 Author(s)
Shatrow, A.D. ; Inst. of Radio Eng. & Electron., Moscow, Russia ; Chuprin, Andrei D. ; Sivov, Alexei N.

An effective analytical method of synthesis of an artificial anisotropic structure has been developed. At a design frequency, it ensures perfect match and a phase shift given. The structure may be formed by arbitrary number of inductive and capacitive grids. The method has been applied to constructing circular polarizers and twist polarizers. The geometrical parameters of the polarizers were found in the explicit form. Analytical criteria for an estimate of the bandwidth of the devices have been derived. Performance of the polarizers over a frequency band was studied. A circular polarizer has been proposed which consists of both a cascade of two inductive grids and a cascade of two capacitive grids. The polarizer can be used when very high axial ratio is needed. It ensures more than 10% bandwidth for 0.99 axial ratio. Measurements have been presented that prove adequacy of the mathematical model for real inductive and capacitive screens

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Antennas and Propagation, IEEE Transactions on  (Volume:43 ,  Issue: 1 )