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A phase-center study of Fabry-Pérot cavity antennas
No full textThe phase center is studied for Fabry-Pérot cavity antennas viewed as two-dimensional leaky-wave radiators, adopting both local and global definitions. Closed-form expressions are obtained for the phase-center location of broadside pencil beams, as a function of the attenuation constant of the leaky mode responsible for radiation and of the extension of the angular sector of interest. Numerical results that validate the proposed formulas are given for specific antenna structures
A leaky-wave analysis of the phase center in Fabry-Pérot cavity antennas
No full textPhase centers are studied for Fabry-Perot cavity antennas viewed as two-dimensional uniform leaky-wave antennas radiating pencil beams pointing at broadside. Alternative definitions for the phase center are considered and compared, as a function of the wavenumber of the relevant leaky waves and of the extension of the angular region of interest in the far field around the direction of maximum radiation amplitude. Analytical formulas are derived and numerical simulations of antennas constituted by planar grounded substrates covered with dielectric or metal partially-reflecting surfaces are provided to validate the analysis
MTT-S Graduate Fellowship Award
No full textGrant di 6000 $ a supporto del Research Plan: "Study of Printed-circuit Leaky-wave Antennas
Studio di fenomeni radiativi in strutture planari e di metodi di risoluzione numerica di equazioni integrali al contorno
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