A novel printed leaky-wave bull-eye antenna with suppressed surface-wave excitation
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(0) (0 Votes)Views: (2013) Date: (Publication Date: 20-25 June 2...) Pages: () -
Author: Baccarelli P. Burghignoli P. Lovat G. Paulotto S. Dept. of Electron. Eng. Univ. of Rome "La Sapienza" Roma Italy;
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Abstract: Abstract We propose a novel microstrip leaky-wave antenna, based on a multiple-ring ('bull-eye') structure, with a high radiation efficiency and reduced edge-diffraction effects. Such favorable properties are achieved by properly choosing the relevant physical and geometrical parameters in order to operate the antenna in a frequency range in which no surface wave may propagate and the only physical leaky wave is the fundamental TM0 mode. A directive conical radiation pattern, frequency-scannable in a wide angular region, is thereby achieved. Numerical results on dispersion properties of the involved TM and TE modes and full-wave simulations of representative structures are provided to demonstrate the feasibility of the proposed design.
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