Leaky-Wave Analysis of TM-, TE-, and Hybrid-Polarized Aperture-Fed Bessel-Beam Launchers for Wireless-Power-Transfer Links

Bessel beams (BBs) can be generated at microwave frequencies by means of compact, planar devices based on Fabry–Perot cavity leaky-wave resonators. Most designs are the excitation a single transverse magnetic/transverse electric (TM/TE) leaky mode vertical electric/magnetic dipole source. In this work, we analyze important case horizontal magnetic dipole, which excites both TM and TE modes, developing an original theoretical framework suitable for resonant radiators. Analytical expressions provided dominant aperture field. The near-field distribution is then evaluated through accurate numerical integration radiating currents validated full-wave simulations relevant BB launcher when excited waveguide-fed slot. Different presented analyzed in order to obtain TM, TE, hybrid polarizations, finding all cases excellent agreement between results. Finally, evaluate compare wireless-power-transfer efficiency two coupled TM-, TE-, or hybrid-polarized launchers wireless link established radiative region. Interestingly, results demonstrate superior performance polarization with respect nonresonant case.