A Ku-Band Microwave Wireless Energy Transmission System Based on Rectifier Diode

Hu, Biao; Zhou, Yihong; Li, Hao; Wang, Haiyang; Li, Tianming; Helaoui, Mohamed; Ghannouchi, Fadhel M.

doi:10.1109/access.2019.2942562

Cited by 11 publications

(4 citation statements)

References 24 publications

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“…19 Extensive system-level research on MWPT has been conducted in recent years. [20][21][22] In 2019, B. Hu performed a Ku-band MWPT experiment. 20 The transmitting antenna was a Cassegrain antenna, and the receiving one was an array antenna.…”

Section: Introductionmentioning

confidence: 99%

“…[20][21][22] In 2019, B. Hu performed a Ku-band MWPT experiment. 20 The transmitting antenna was a Cassegrain antenna, and the receiving one was an array antenna. The transmission distance was 60 m, and the RF-DC efficiency was 6.7%.…”

Section: Introductionmentioning

confidence: 99%

“…Extensive system‐level research on MWPT has been conducted in recent years 20–22 . In 2019, B. Hu performed a Ku‐band MWPT experiment 20 .…”

Section: Introductionmentioning

confidence: 99%

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An efficient 5.8 GHz microwave wireless power transmission system

Chen

Hao

et al. 2022

Int J RF Mic Comp-Aid Eng

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This study demonstrates an efficient 5.8 GHz microwave wireless power transmission (MWPT) system. The whole system comprises a transmitting subsystem and a receiving subsystem. A 64-way phased microwave power source and a transmitting antenna array of 1 m Â 1 m are included in the transmitting subsystem. By exciting the transmitting array with a 10-dB Gaussian amplitude distribution and a quadratic phase distribution via the phased microwave power source, the transmitting subsystem radiates a low side-lobe and focused microwave beam. The receiving subsystem comprises a receiving antenna array of 0.5 m Â 0.5 m and 64 rectifiers. The efficient receiving antenna array and rectifiers realize an efficient rectenna array. An experiment on the MWPT system is conducted. The total microwave power output from the source is 24 W, and the transmission distance is 10 m. According to the measurements, the total rectified direct current (DC) power is 4.58 W, and the overall RF-DC efficiency is 19.08%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An efficient 5.8 GHz microwave wireless power transmission system

Chen

Hao

et al. 2022

Int J RF Mic Comp-Aid Eng

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“…Lastly, the received RF to DC rectification efficiency includes the efficiency of the rectifier and the efficiency of the DC or RF combining [18]. The overall efficiency of the microwave power transmission system is calculated as the product of these five efficiencies [19], [20]. Among them, the improvement of the efficiency in the air is discussed in this paper.…”

mentioning

confidence: 99%

Curved-Retrodirective Beamforming System to Improve Microwave Power Transmission Efficiency in the Fresnel Region

Kim

et al. 2023

IEEE Internet Things J.

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This paper presents a curved-retrodirective beamforming system for improving microwave power transmission efficiency in the Fresnel region. Since microwave power transmission in the far-field region has very low efficiency, studies on the Fresnel region are being actively conducted. In these studies, a retrodirective beamforming (RDB) technique is popular. The RDB system with a sub-array structure was a realistic structure that reduced system complexity. However, the transmission efficiency is lowered because the beamwidth of the transmitter antenna element is narrow. To solve this problem, this paper proposes a curved-retrodirective beamforming system that can focus the microwave power on the receiver. The proposed system uses the peak gain of the transmitter antenna element by using tilted beams to improve transmission efficiency. The system design method that can maximize the transmission efficiency is also presented depending on the given conditions such as transmission distance, characteristics of the transmitter and receiver antenna. The simulation showed a reduction in power leakage compared to the conventional system. The fabrication and measurement validated the efficiency improvement of the proposed system for IoT devices in the Fresnel region.

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Design of a microwave power transmission demonstration system for space solar power station

Wang

Wei

Dong

et al. 2022

Int J RF Mic Comp-Aid Eng

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A microwave power transmission (MPT) demonstration system was assembled to comprehensively emulate the operating mode of MPT in space solar power station (SSPS). Based on solid power amplifier and phased antenna array, this system comprised three main parts, that is, microwave power transmitting subsystem, microwave power rectenna subsystem, and power beam steering subsystem. It was employed to validate the constraint relationship between beam collection efficiency and the sizes of transmitting antenna and rectenna, transmission distance, operation frequency. High efficiency rectifying and accurate beam steering were also demonstrated. The power transmitting antenna was composed of 64 sub-arrays of patch antennas, with the dimension of 1.2 Â 1.2 m 2 . In addition, the rectenna array was constructed as a corner truncated square with the side length of 2 m. Its design was based on the concept of perfectly matched layer and integrated rectifying surface. The power beam steering subsystem, implemented with software retrodirective idea, pointed the microwave beam to the rectenna according to the direction of arrival of the pilot signal. The experimental MPT system, operating at 5.8 GHz, transmitted 910 W microwave power across 30 m distance. At the power receiving end, the optimum rectenna conversion efficiency of 49.3% was obtained. With aid of the beam steering subsystem, beam granularity, and beam steering accuracy of 0.23 and 0.18 were achieved, respectively. The compositive experiment verified all function as power transmitting, receiving, rectifying, and steering of MPT system. MPT technology is thus driven toward engineering application, and will ultimately space solar power exploration.

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A Ku-Band Microwave Wireless Energy Transmission System Based on Rectifier Diode

Cited by 11 publications

References 24 publications

An efficient 5.8 GHz microwave wireless power transmission system

An efficient 5.8 GHz microwave wireless power transmission system

Curved-Retrodirective Beamforming System to Improve Microwave Power Transmission Efficiency in the Fresnel Region

Design of a microwave power transmission demonstration system for space solar power station

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