An AC-DC Rectifier Design at 2.45 GHz for Wireless Power Transfer
Keywords:High output DC voltage Rectifier, Schottky diode, Wireless power transfer (WPT),
AbstractIn this paper, a microwave doubler rectifier design at 2.45 GHz is presented. This rectifier consists of a shortcircuited matching network, DC block interdigital capacitor and output radial filter. Two fast switching Schottky diodes of HSMS 286B are used for rectification process. The proposed rectifier is fabricated on a low-cost FR-4 substrate with relative permittivity of 4.4. From experimental results, the proposed rectifier can achieve an output greater than 7 V at an input power of 20 dBm. This rectifier has the capability of providing a high output voltage at low cost, which makes it suitable for wireless power transfer (WPT) applications.
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