An all-metal beam scanning lens antenna for high-power microwave applications

Ma Zhaokun; Sun Yunfei; Zhang Qiang; He Juntao; Yuan Chengwei; Cao Zhenqiang

doi:10.11884/HPLPB202638.250237

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2026 > Accepted Manuscript

Ma Zhaokun, Sun Yunfei, Zhang Qiang, et al. An all-metal beam scanning lens antenna for high-power microwave applications[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250237

Citation:

Ma Zhaokun, Sun Yunfei, Zhang Qiang, et al. An all-metal beam scanning lens antenna for high-power microwave applications[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250237

Ma Zhaokun, Sun Yunfei, Zhang Qiang, et al. An all-metal beam scanning lens antenna for high-power microwave applications[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250237

Citation:

Ma Zhaokun, Sun Yunfei, Zhang Qiang, et al. An all-metal beam scanning lens antenna for high-power microwave applications[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250237

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An all-metal beam scanning lens antenna for high-power microwave applications

doi: 10.11884/HPLPB202638.250237

College of Advanced Interdisciplinary Studies, National University of defense Technology, Changsha 410073, China

Received Date: 2025-12-03
Accepted Date: 2026-01-15
Rev Recd Date: 2025-01-20

Available Online: 2026-02-06

Abstract

Abstract

Background
With the advancement of high-power microwave (HPM) technology, there is a growing demand for HPM antennas with beam scanning capabilities.
Purpose
This paper focuses on the beam-scanning technology in HPM field and proposes a novel circularly-polarized all-metal beam-scanning lens antenna based on the Risley-prism principle, aiming to address the challenges of wide-angle beam scanning and high power handling capacity (PHC).
Methods
By introducing circular slots and metamaterial structures into hexagonal units, a circular polarization orthogonal conversion efficiency(the conversion efficiency of incident left-hand/right-hand circularly polarized (LHCP/RHCP) waves to their orthogonal RHCP/LHCP waves) of over 99% at the central frequency and a continuous phase tuning range of 0° to 360° are achieved. After arraying, the two-layer lens, together with the radial line slot array (RLSA) antenna, constitutes the beam scanning antenna system. Specifically, the first lens converts the circularly polarized hollow beam radiated by the feed antenna into a solid beam while achieving a 25.66° beam deflection synchronously. The second lens further deflects the beam, and two-dimensional beam scanning within a conical angle of ±60° can be realized by independently rotating the two layers of lenses.
Results
A beam scanning lens antenna operating at 14.25 GHz with an axial length of 5.6λ is designed and simulated. During the scanning process, the gain varies within the range of 34.7–37.9 dB, the reflection coefficient remains consistently below −25 dB, and the maximum aperture efficiency exceeds 79%, with the PHC of the beam scanning antenna exceeds 1 GW.
Conclusions
The antenna proposed in this paper exhibits excellent beam scanning performance and high PHC, demonstrating great potential for applications in the HPM field.
- all-metal,
- lens array,
- beam scanning antenna,
- circularly polarized feed antenna,
- high-power microwave

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References(27)

References

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