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A dual band CRLH leaky wave antenna with electrically steerable beam based on liquid crystals is designed and investigated. Lots of full-wave simulations are conducted with CST MW Studio software package to optimize and analyze the performance of the antenna. It shown that the proposed LWA achieves the beam scanning from −16° to + 21° at 7.2 GHz and from −10° to + 19° at 9 GHz simultaneously, through...
A Novel electrically controllable composite right/left-handed leaky wave antennas (CRLH-LWAs) based on liquid crystal (LC) is proposed. Simulation results show the antenna exhibits a simulated beam scanning angle of −47° to +56° over the frequency range of from 11.8 GHz to 13 GHz. A simulated bandwidth from 11.78 GHz to 13.09 GHz is achieved. By steering the permittivity of LC, the antenna presents...
A design method for the omnidirectional wireless power transmission system (OWPT) is proposed. The OWPT is realized by applying the rotating magnetic field, which is generated by the proposed transmitter. The proposed transmitter is composed by two mutually perpendicular loops fed by two excitation sources with the same magnitude but different phases. An OWPT system prototype is fabricated and measured...
In this paper, a novel method for omnidirectional wireless power transmission (OWPT) via magnetic resonant coupling is proposed. In the proposed OWPT, a pair of cross coil consists of two orthogonal loops with 90° feeding phase difference serve as the wireless power transmitter. Through both theoretical analyses and numerical simulations, it is shown that, rotating magnetic field is generated and...
A novel method using resonant coils of different sizes is proposed to suppress frequency splitting in wireless power transfer (WPT). Frequency splitting is caused by excessive mutual inductance between transmitter and receiver, and can be suppressed by reasonably designing the sizes of the transmitter and receiver to eliminate the pole value of the mutual inductance. Theory calculation are conducted...
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