This letter describes the design, simulation, and measurement process of a series radio frequency (RF) rectifier at the 2.4 GHz ISM band, composed of a distributed filter with radial stub elements. The proposal is to reduce the first- and second-order harmonic components that are generated by the diode nonlinearities at the rectifier output. The efficiency and output voltage are presented according to load values ranging from 1 to $10 k\Omega $ . These figures of merits are obtained with a new methodology, using an automatized measuring setup, which describes in detail the behavior and nuances of the circuit according to the frequency and input power through experimental level curves. The proposed RF rectifier prototype reaches over 20% efficiency for input power levels over −20 dBm for the lower load values, showing a satisfactory performance in comparison with other proposals for low-power applications.

中文翻译：

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具有基于电压和效率电平曲线的新实验分析的谐波抑制 RF 整流器设计

这封信描述了 2.4 GHz ISM 频段的串联射频 (RF) 整流器的设计、仿真和测量过程，该整流器由具有径向短截线元件的分布式滤波器组成。建议是减少整流器输出端二极管非线性产生的一阶和二阶谐波分量。效率和输出电压根据从 1 到 $10 k\Omega $ 的负载值呈现。这些品质因数是通过使用自动化测量设置的新方法获得的，该方法通过实验电平曲线根据频率和输入功率详细描述了电路的行为和细微差别。建议的 RF 整流器原型在输入功率电平超过 -20 dBm 时达到 20% 以上的效率，负载值较低，