volume | PIER Journals

Abstract

A novel miniaturized lens unit at 2.45 GHz is presented in this manuscript. This unit is formed by a modified Malta cross and an ordinary cross, with a unit period of 0.2λ₀, where λ₀ denotes the unit wavelength. The ordinary cross unit creates a pathway for current between two units. Accordingly, it increases the current path and reduces the unit volume to a quarter of its original size. By adjusting the length of the Malta cross arm, it is possible to achieve the transmission phase at 2.45 GHz within a range of 0-360˚. Moreover, an improved PSO algorithm is used to optimize the phase of array elements. The optimization process is able to achieve a phase-shifting of ±18˚ within the range of 3.28λ₀. Simulation and measurement results show that the miniaturized lens unit can be used in the wireless energy transmission system.

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Ms. Xingyue Liu

Dr. Zhiwei Liu

Dr. Cheng Qiu

Dr. Zehua Luo

Dr. Yuxin Deng