Wireless Links in the Radiative Near Field via Bessel Beams

Jason D. Heebl (1) , Mauro Ettorre (2) , Anthony Grbic (1)

1 EECS - Department of Electrical Engineering and Computer Science
2 IETR - Institut d'Électronique et des Technologies du numéRique

The generation of propagating Bessel beams is typically limited to optical frequencies with bulky experimental setups. Recent works have demonstrated Bessel-beam generation at microwave and millimeter-wave frequencies utilizing low-profile, planar, leaky-wave antennas. These studies have assumed a single leaky mode in the antenna. In this work, the rigorous analysis of a planar Bessel-beam launcher supporting multiple modes is presented. By employing the mode-matching technique, a complete electromagnetic solution of the structure, its supported modes, and radiated fields is obtained. Additionally, a coupled system of two planar Bessel launchers is analyzed, and it is shown that the system can both transmit and receive Bessel beams. The energy-transfer characteristics of the coupled system are analyzed and discussed. An analysis of the coupled system's even and odd modes of operation show that efficient power transfer is possible, and that an odd mode is preferred since it yields higher field confinement and power-transfer efficiency.

Keywords: wave-guide; power-transfer; discontinuity; generation; scattering; modes

Domains: Engineering Sciences [physics]; Electronics; Computer Science [cs]; Networking and Internet Architecture [cs.NI]

Jason D. Heebl, Mauro Ettorre, Anthony Grbic. Wireless Links in the Radiative Near Field via Bessel Beams. Physical Review Applied, 2016, 6 (3), pp.034018. ⟨10.1103/PhysRevApplied.6.034018⟩. ⟨hal-01395430⟩