In this paper, a low-cost rectenna based on an antipodal Vivaldi antenna (AVA) with elliptical slots (AVA-ES) is developed and analyzed. The design of AVA-ES, when compared to a reference AVA, presents significant improvements in directivity and gain (58% at 2.45GHz for both), evidencing its advantages for using in rectennas. The proposed rectenna prototype presents satisfactory results at 2.45GHz, such as conversion efficiency for low-power input levels (27% at −10dBm) and maximum output voltage (550mV), that supports its use for radio-frequency energy harvesting (RFEH).

中文翻译：

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用于低成本整流天线应用的椭圆槽对映维瓦尔第天线

本文开发并分析了一种基于椭圆槽对映维瓦尔第天线 (AVA) 的低成本整流天线 (AVA-ES)。与参考 AVA 相比，AVA-ES 的设计显着改善了方向性和增益（2.45 时为 58%GHz），证明了其在整流天线中使用的优势。所提出的整流天线原型在 2.45 处表现出令人满意的结果GHz，例如低功率输入电平的转换效率（27%-10dBm）和最大输出电压（550mV），支持其用于射频能量收集（RFEH）。