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The possibility to establish a wireless link in the radiative near field at millimeter waves through Transverse Electric (TE) polarized Bessel beams is here investigated. Previous realizations of TE- polarized Bessel beams at millimeter waves are based on leaky-wave resonant cavities fed with loop antennas. Unfortunately, these feeders also excite undesired, nonnegligible Transverse Magnetic (TM) field components, thus leading to a hybrid TE polarization, rather than a pure TE polarization. In this work, we propose a radial-slot array feeding technique as an effective solution to generate almost pure TE-polarized Bessel beams in leaky-wave resonant cavities. The design is based on an effective leaky-wave approach for the characterization of the launcher. The proposed TE feeding scheme is validated with full-wave results. The study of a complete wireless power transfer scenario shows that the proposed solution …
Publication date: 
27 Sep 2022

Edoardo Negri, Francesca Benassi, Walter Fuscaldo, Diego Masotti, Paolo Burghignoli, Alessandra Costanzo, Alessandro Galli

Biblio References: 
Pages: 230-233
2022 52nd European Microwave Conference (EuMC)