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This paper presents a patch antenna array topology for Simultaneous Wireless Information and Power Transfer (SWIPT) applications. The resulting Double Patch Antenna Array (DPA) is composed of two patch antennas operating at different frequencies and fabricated on a unique substrate. One of the patches operates at the 1.8 GHz mobile communication band and is used for wireless communication, while the other one operates at the 2.4 GHz Industrial, Scientific, and Medical (ISM) band, and is used for Radio Frequency Energy Harvesting (RFEH). The analyzes and measurements carried out have shown that the adopted topology has satisfactory performance for communication, with a gain of 1.5 dBi, and for out-of-band energy harvesting, with a Vout of 160 mV at 2.45 GHz. These results indicate this approach as a promising strategy for low-power wireless applications.

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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.

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 2.45[Formula: see text]GHz for both), evidencing its advantages for using in rectennas. The proposed rectenna prototype presents satisfactory results at 2.45[Formula: see text]GHz, such as conversion efficiency for low-power input levels (27% at [Formula: see text]10[Formula: see text]dBm) and maximum output voltage (550[Formula: see text]mV), that supports its use for radio-frequency energy harvesting (RFEH).