Aiming to improve the SWIPT (Simultaneous Wireless Information and Power Transfer) technologies, this work proposes a novel Dual-Output quasi-Yagi antenna (DOQY), designed by combining a single classic quasi-Yagi antenna (QY) and a dedicated frequency splitter in order to behave as two distinct antennas, one operating at 1.8 GHz mobile communication band for data communication and another at 2.4 GHz ISM band for out-of-band energy harvesting. To validate the proposal, the results of the DOQY are compared to those presented by a reference quasi-Yagi antenna (QYref) with the same dimensions. Additionally, for analysis of the energy harvesting capacity and the corresponding necessary RF design criteria, the antennas are connected to a well-established rectifier system and its performances were compared. The novel architecture presents a antenna gain performance of 70%, in comparison with QYref in both central frequency bands, presenting, however, the same performance in energy harvesting. At 1.8 GHz the antenna gain performance is increased to 81% of the QYref, adding the rectifier circuit in their respective port. These satisfactory results endorse the operability of the DOQY for SWIPT application, adding a new port without compromising the system performance.

中文翻译：

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双输出准八木天线，用于带外RF能量收集

为了改进SWIPT（同步无线信息和电力传输）技术，这项工作提出了一种新颖的双输出准八木天线（DOQY），该天线是通过将单个经典准八木天线（QY）和专用分频器组合在一起而设计的。为了充当两个截然不同的天线，一个工作在1.8 GHz移动通信频带上以进行数据通信，而另一个工作在2.4 GHz ISM频带上以进行带外能量收集。为了验证该建议，将DOQY的结果与具有相同尺寸的参考准八木天线（QYref）给出的结果进行比较。此外，为了分析能量收集能力和相应的必要RF设计标准，将天线连接到完善的整流器系统，并比较其性能。与两个中心频带中的QYref相比，新颖的架构呈现出70％的天线增益性能，但是在能量收集方面却表现出相同的性能。在1.8 GHz时，天线增益性能提高到QYref的81％，在其各自的端口中添加了整流电路。这些令人满意的结果证明了DOQY对于SWIPT应用程序的可操作性，在不损害系统性能的情况下增加了新端口。