Tilted-Beam Solar Antenna for Hybrid Energy Harvesting System

A tilted-beam antenna array integrated with solar cells is proposed in this letter. In each unit, four rectangular crystalline silicon solar cells are arranged as superstrate on the top of a slot antenna. By changing the relative position of the superstrate and feeding structure, two modes of the an...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2024-11, Vol.23 (11), p.3842-3846
Main Authors: Li, Ke, Guo, Jinge, Li, Zhuang, Cai, Yuan-Ming, Wang, Fuwei, Ren, Yuhui
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna design
Antenna measurements
Antenna radiation patterns
Antennas
Bandwidth
Broadband antennas
Energy harvesting
High gain
Hybrid energy harvesting
Microstrip antennas
Photovoltaic cells
Position measurement
Power dividers
Slot antennas
solar cell antenna
Solar cells
tilted-beam
Voltage measurement
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Summary:A tilted-beam antenna array integrated with solar cells is proposed in this letter. In each unit, four rectangular crystalline silicon solar cells are arranged as superstrate on the top of a slot antenna. By changing the relative position of the superstrate and feeding structure, two modes of the antenna can be observed with tilted beams. A power divider is employed, and the two modes are combined which leads to a dual-beam at +30° and −30° simultaneously. A 1 × 3 antenna array is proposed and fabricated, and the measured fractional bandwidth is 20.8%, with a low profile of 0.025 λ 0 and a peak gain of 13.2 dBi. The experiment of the solar cell is also carried out to verify the effectiveness of the design. The proposed antenna array has the advantages of wideband, high gain, low profile and tilted beam, which makes it suitable for the hybrid energy harvesting system.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2024.3445457