Broadband Circularly Polarized Rectenna With Wide Dynamic-Power-Range for Efficient Wireless Power Transfer

Du, Zhi-Xia; Bo, Shao Fei; Cao, Yun Fei; Ou, Jun-Hui; Zhang, Xiu Yin

doi:10.1109/access.2020.2985294

Cited by 33 publications

(11 citation statements)

References 39 publications

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“…It is obtained to produce an orthogonal field to each other under the patch and outside the patch. The via hole is positioned at the point where the other via-hole generates the field; therefore, the reducing effect significantly changes the performance between ports to increase the antenna's sensitivity to wave polarization [15]. The ground plane separating the primary patch connection and the double U slot is smaller than the resonance size so that radiation has propagated to the main patch element.…”

Section: Dual Port Cp Antennamentioning

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: Dual Port Cp Antennamentioning

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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“…To receive power from the maximum sources, wideband rectennas are used, wideband rectenna presented in [14] is capable of working from 450 MHz to 900 MHz, rectenna presented a hybrid resistance compression technique. The broadband rectenna presented in [15] is capable of working from 1.7 GHz to 2.9 GHz; the highest e ciency obtained is more than 60% at the higher input power level (IPL) of 5 dBm to 17 dBm. The broadband rectenna presented in [16] can work from 2.1 GHz to 3.3 GHz highest e ciency achieved is 70% but at a higher IPL of 14 dBm.…”

Section: Introductionmentioning

confidence: 99%

A Broadband Rectenna for RF Energy Harvesting from Low Power Levels

Ojha

Tomar

Akashe

et al. 2023

Preprint

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In the article, a broadband rectenna is proposed that can harvest energy from low input power levels. A broadband rectenna is designed that can operate between 1.4 GHz and 2.8 GHz with a bandwidth of 1.4 GHz. The proposed rectenna covers two important bands, i.e., GSM 1800 MHz and ISM 2450 MHz. The antenna consists of an antenna and a rectifier. A hexagonal patch antenna is designed with a defective ground structure that can operate from 1.4 GHz to 2.8 GHz. For rectification purposes, the HSMS2850 Schottky diode is used. To achieve good conversion efficiency, a matching circuit (a combination of bandpass and high-pass section) is designed. Maximum simulated conversion efficiencies achieved at 1.8 GHz with a load resistance of 1.3 kΩ are 21%, 36.3%, 51.2%, 63.7%, and 73.4% at power levels of -20 dBm, -15 dBm, -10 dBm, -5 dBm, and 0 dBm, respectively. Simulated conversion efficiency achieved at 2.45 GHz with a load resistance of 2 kΩ is 22.5%, 35%, 46%, 57.2%, and 68.5% at power levels of -20 dBm, -15 dBm, -10 dBm, -5 dBm, and 0 dBm, respectively. With an optimum load of 2 kΩ and IPLs of -20 dBm, -15 dBm, -10 dBm, -5 dBm, and 0 dBm, the measured conversion efficiencies at 1.8 GHz are 22%, 36%, 51.5%, 65%, and 66.4%, respectively, and at 2.45 GHz they are 22%, 36%, 46%, 57%, and 67%, respectively.

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“…Lastly, there have been studies to alleviate the change in the RX rectifier output voltage due to the wide input change on the TX side through a voltage doubler [18], but this study does not apply to the case where there are more than two inputs and outputs. Also, WPT systems having a dynamic input power range have been proposed in [19]- [20], but the situation where the input voltage difference reached 10 times or more was not considered and it is limited to a low-power system having a power range of less than several W.…”

Section: Introductionmentioning

confidence: 99%

Design of a Wireless Power Transfer System With Two Inputs With Large Voltage Differences for Missiles Mounted on Maritime Vessels

et al. 2022

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Missiles mounted on maritime vessels have two types of loads. One is the operating load consumed just before launch, and the other is the safety sensors load that must always be activated for safety. Because the operating load consumes a large power capacity, the power generated by the vessel's own power generators must be supplied. Meanwhile, the loads for safety sensors are supplied through an energy storage system (ESS) because the safety sensors must be supplied with power even when the generators stop. However, the voltage difference between the generated power and the ESS power reaches ten times or more. Therefore, there is a problem in that the input of the two power sources with a large input difference must be transferred to two loads through only a pair of coils. To solve this problem, a WPT system is proposed to overcome the voltage difference between the generated power and the ESS power. The design method of the proposed system is analyzed mathematically, and it is verified through simulations and experiments. The proposed system has a maximum dc to dc power transfer efficiency of 76.8% with a capacity of 550 W and has the advantage that power is continuously supplied to the sensor loads even if the input voltage source is changed. In addition, by operating the proposed WPT system under a wide load of 200 W to 1000 W, the effectiveness of the proposed WPT system is proved.

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Broadband Circularly Polarized Rectenna With Wide Dynamic-Power-Range for Efficient Wireless Power Transfer

Cited by 33 publications

References 39 publications

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

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

A Broadband Rectenna for RF Energy Harvesting from Low Power Levels

Design of a Wireless Power Transfer System With Two Inputs With Large Voltage Differences for Missiles Mounted on Maritime Vessels

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