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Microwave Bessel Beams Generation Using Guided Modes

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3 Author(s)
Salem, M.A. ; Div. of Phys. Sci. & Eng., King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia ; Kamel, A.H. ; Niver, E.

A novel method is devised for Bessel beams generation in the microwave regime. The beam is decomposed in terms of a number of guided transverse electric modes of a metallic waveguide. Modal expansion coefficients are computed from the modal power orthogonality relation. Excitation is achieved by means of a number of inserted coaxial loop antennas, whose currents are calculated from the excitation coefficients of the guided modes. The efficiency of the method is evaluated and its feasibility is discussed. Obtained results can be utilized to practically realize microwave Bessel beam launchers.

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Antennas and Propagation, IEEE Transactions on  (Volume:59 ,  Issue: 6 )