Squint-less arc array for near-field focusing in wideband systems

Kim, Sol; Kim, Jeong-Wook; Cho, Hyun-Young; Ahn, ByungKuon; Kim, Kwang‐Seok; Yu, Jong‐Won

doi:10.1080/09205071.2021.1890642

Cited by 1 publication

(1 citation statement)

References 16 publications

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“…The tilted beam means that the direction of the main beam of the Tx antenna element is electrically or mechanically inclined toward the center of the Rx antenna. The mechanically tilted beam was adopted in this paper [36]. The proposed curved-RDB system can use the peak gain of the Tx antenna element by using tilted beams, so an improvement of the power transmission efficiency can be expected.…”

Section: System Design a System Analysismentioning

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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Section: System Design a System Analysismentioning

confidence: 99%

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

Kim

et al. 2023

IEEE Internet Things J.

View full text Add to dashboard Cite

show abstract

Squint-less arc array for near-field focusing in wideband systems

Cited by 1 publication

References 16 publications

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

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

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