Design and experiments of a high-conversion-efficiency 5.8-GHz rectenna
Design and experiments of a high-conversion-efficiency 5.8-GHz rectenna
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DOI：
10.1109/22.739282
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发表时间：
1998-12-01
影响因子：
4.3
通讯作者：
Chang, K
中科院分区：
文献类型：
--
作者：
McSpadden, JO;Fan, L;Chang, K
设计并测试了一种用于微波功率传输的5.8 GHz高效率整流天线元件。偶极子天线和滤波电路印刷在薄的硬质合金基板上。整流器件采用击穿电压较低的硅肖特基势垒混频二极管。该整流天线元件在波导模拟器中进行了测试，在输入功率为50 mW、负载为327欧姆的情况下，获得了82%的射频-直流转换效率。给出了二极管效率和输入阻抗随输入射频功率变化的闭合方程。效率测量结果与计算结果吻合较好。天线和电路设计均基于全波电磁模拟器。二次谐波功率电平比基波输入功率低21分贝。
A high-efficiency rectenna element has been designed and tested at 5.8 GHz for applications involving microwave-power transmission. The dipole antenna and filtering circuitry are printed on a thin duroid substrate. A silicon Schottky-barrier mixer diode with a low breakdown voltage is used as the rectifying device. The rectenna element is tested inside a waveguide simulator and achieves an RF-to-dc conversion efficiency of 82% at an input power level of 50-mW and 327-Omega load. Closed-form equations are given for the diode efficiency and input impedance as a function of input RF power. Measured and calculated efficiency results are in good agreement. The antenna and circuit design are based on a full-wave electromagnetic simulator. Second harmonic power levels are 21 dB down from the fundamental input power.