Loss Mechanism Analysis of the Solar Cell Waveguide Slot Phased Array Antenna Using Equivalent Circuit Method

This letter establishes an equivalent circuit model of the waveguide slot solar cell phased array antenna, and the loss mechanism of its realized gain is successfully revealed. To validate the accuracy and validity of the equivalent circuit, a solar cell waveguide slot phased array antenna was desig...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2024-07, Vol.23 (7), p.2001-2005
Main Authors: Chen, Qian, Qiao, Zilin, Chen, Jian, Yang, Qiaorui, Lu, Jiaguo, Wang, Wei, Cui, Zhonglin, Huang, Zhixiang, Yang, Lixia, Li, Yingsong
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna design
Antenna measurements
Antennas
Design parameters
Efficiency
Equivalent circuit method
Equivalent circuits
Frequency analysis
Frequency measurement
Impact analysis
phased array antenna
Phased arrays
Photovoltaic cells
Radar arrays
Radiation
Resonant frequencies
Slot antennas
solar cell
Solar cells
Superhigh frequencies
Synthetic aperture radar
waveguide slot antenna
Waveguides
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Summary:This letter establishes an equivalent circuit model of the waveguide slot solar cell phased array antenna, and the loss mechanism of its realized gain is successfully revealed. To validate the accuracy and validity of the equivalent circuit, a solar cell waveguide slot phased array antenna was designed. The fitted radiation efficiency curve by the established equivalent circuit is consistent with the measured curve, validating the correctness of the equivalent circuit. Moreover, we analyzed the impact of the equivalent circuit parameters on the radiation efficiency of the solar cell antenna. It shows that the radiation efficiency is mainly affected by the resonant state of the equivalent circuit of the solar cell part, and the radiation efficiency is the lowest when the working frequency meets the resonant frequency. The established equivalent circuit method can guide the design of high radiation efficiency solar cell antennas. The designed X-band metal solar cell phase array antenna shows a high radiation efficiency of 69.5%-74% and a high solar cell coverage ratio above 82%, which is suitable for satellite synthetic aperture radar applications.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2024.3376559