Design of X-band high power wide tuning bandwidth electronically beam scanning reflectarray antenna based on varactor

Zhang Yang; Li Xiangqiang; Zhang Jianqiong; Wang Qingfeng; Tang Xianfeng

doi:10.11884/HPLPB202537.240411

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Article Navigation > High Power Laser and Particle Beams > 2025 > Accepted Manuscript

Zhang Yang, Li Xiangqiang, Zhang Jianqiong, et al. Design of X-band high power wide tuning bandwidth electronically beam scanning reflectarray antenna based on varactor[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.240411

Citation:

Zhang Yang, Li Xiangqiang, Zhang Jianqiong, et al. Design of X-band high power wide tuning bandwidth electronically beam scanning reflectarray antenna based on varactor[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.240411

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Design of X-band high power wide tuning bandwidth electronically beam scanning reflectarray antenna based on varactor

doi: 10.11884/HPLPB202537.240411

School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2024-12-03
Accepted Date: 2025-03-22
Rev Recd Date: 2025-02-19

Available Online: 2025-04-16

Abstract

Abstract

To address the wideband and beam scanning requirements of high-power microwave (HPM) systems, this paper proposes an X-band varactor-based high-power wideband beam-scanning reflectarray antenna. The antenna employs a linearly polarized horn feed and a sandwich-structured embedded patch element, where the nested dual-resonance structure integrated with varactors simultaneously extends the phase tuning range (360°) and operational bandwidth. By eliminating abrupt structural discontinuities and adopting a sandwich dielectric configuration, the design effectively suppresses triple-junction formation, achieving a power capacity of 5 MW in 1 atm SF6 environment. Varactor capacitance adjustment enables a 12% relative tuning bandwidth within 8.55-9.65 GHz. Simulations of an 11×11 rectangular grid reflectarray demonstrate: a maximum gain of 25.12 dBi with 54.39% aperture efficiency for a 242-mm aperture, and full-band 0°～20° beam scanning capability. Compared with existing technologies, this design exhibits superior tuning bandwidth (12%) and power capacity (5 MW), providing an effective solution for wideband beam control in HPM systems.
- high-power microwave,
- wide band,
- electronically beam scanning,
- reflectarray antenna,
- varactor

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References(25)

References

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