In this letter, a compact Class-C rectifier with high efficiency based on a novel structure was proposed for wireless power transmission (WPT). This structure is connected to the rectifying diode in parallel. It presents infinite impedance at the output port at the fundamental frequency for impedance matching and zero impedance at the high harmonic frequencies. An open-end 12th wavelength microstrip line and a short-end quarter wavelength microstrip line are applied in this design. For fabricated, a radio frequency (RF) rectifier operating at 2.45 GHz was designed and tested. The measurement results show that the maximum RF–dc conversion efficiency is 82.7% at 25 dBm. Moreover, the proposed rectifier is compact with the size of $0.35\lambda _{\mathrm {g}} \times 0.13\lambda _{\mathrm {g}}$ .

中文翻译：

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一种用于无线电力传输的高效新型C类整流器

在这封信中，我们提出了一种基于新颖结构的紧凑型高效 C 类整流器，用于无线电力传输 (WPT)。这种结构与整流二极管并联。它在输出端口在阻抗匹配的基频处呈现无限阻抗，在高谐波频率处呈现零阻抗。本设计采用开放端12波长微带线和短端四分之一波长微带线。对于制造，设计并测试了工作在 2.45 GHz 的射频 (RF) 整流器。测量结果表明，最大 RF-dc 转换效率在 25 dBm 时为 82.7%。此外，所提出的整流器是紧凑的，尺寸为 $0.35\lambda _{\mathrm {g}} \times 0.13\lambda _{\mathrm {g}}$ 。