A Study of Improve Efficiency of Broad-Angle Rectenna Using Hybrid Coupler

Tanaka, Yuki; Kanai, Kaname; Hasaba, Ryosuke; Satō, Hiroshi; Koyanagi, Yoshio; Ikeda, Takuma; Tani, Hiroyuki; Kajiwara, Shoichi; Shinohara, Naoki

doi:10.1109/wptc45513.2019.9055514

Cited by 1 publication

(1 citation statement)

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“…The addition of the optical element integration in solar cells has been studied to optimize the optical and electrical properties of the most promising examples [10]. In [11], a microstrip rectenna between two ports is designed for data communication transmission and energy harvesting. However, the rectenna applied configuration in previous research has a complex multi-layer structure, and the resonant frequency is different for each feed port, limiting the application scenario.…”

Section: Introductionmentioning

confidence: 99%

CP Antenna with 2 × 4 Hybrid Coupler for Wireless Sensing and Hybrid RF Solar Energy Harvesting

Mujahidin

Kitagawa

2021

Sensors

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The main challenge faced by RF energy harvesting systems is to supply relatively small electrical power to wireless sensor devices using microwaves. The solution is to implement a new device in a circularly polarized rectenna with circular polarization sensitivity integrated with a thin-film solar cell. Its dual-feed antennas are connected to a 2 × 4 asymmetric hybrid coupler and a multi-stage voltage doubler rectifier circuit. This configuration has a 2 × 4 asymmetric hybrid coupler used to produce 4 outputs with a 90-degree waveform phase difference. The two ports can independently be connected to the wireless sensor circuit: radiofrequency harvesting of hybrid energy solar and information equipment can be carried out with these two antennas. The Dual-Feed circular patch antenna has a two-port bandwidth of 137 MHz below −15 dB and an axial ratio of less than 3 dB, with a center frequency of 2.4 GHz with directional radiation and a high gain of 8.23 dB. It can be sensitive to arbitrary polarization of the input voltage multiplier waveform to overcome uncertainty in empirical communication environments. A parallel structure is arranged with a thin film solar cell integration from the transmitter with an output voltage of 1.3297 V with a compact composition and RF energy. The importance of adopting a wireless sensor strategy with circular polarization sensitivity and integrated RF solar energy harvesting rather than a single source method makes this research a significant novelty by optimizing the analysis of multiple wireless sensor signal access.

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Section: Introductionmentioning

confidence: 99%