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This paper presents a compact design of shorted patch rectenna with the harmonic rejection properties for the applications of wireless power transmission. In order to improve the power conversion efficiency (PCE), the harmonic rejection filter (HRF) is replaced by etching a U-shape slot resonator on the shorted patch antenna. As a result, this method may improve the PCE without sacrificing the capability...
In this paper, a near-field coupled transmitting-receiving antenna pair is proposed to achieve the maximum transmission efficiency. The antenna structure developed can achieve up to 77 % transmission efficiency in near-field coupling region. Additionally, through the rectifier circuit design, the front-end antenna pair will convert the radio frequency energy received into DC output. The maximum conversion...
In this paper, a high conversion efficiency rectenna for wireless power transmission at 2.45 GHz is proposed. The rectenna is fabricated on a low-cost FR-4 substrate. The proposed design contains a dual circularly polarized patch antenna in which a high-order harmonic rejection property is embedded, and a pair of rectifying circuits without harmonic rejection filters. The dimension for the proposed...
In the context of energy harvesting for wireless sensor networks, the energy-harvesting system using the rectifying antenna (rectenna) has a great interest. Rectenna, which can convert RF energy to DC power, plays an important role for wireless power transmission (WPT) [1]. The typical rectenna in the prior literatures basically consists of five elements: receiving antenna, low pass filter (LPF) or...
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