Research on an X-band high-transmittance radar radome structure

Wang Kaihua; Yang Huanyu; Li Siming; Guo Cheng; Zhao Qing

doi:10.11884/HPLPB202638.250439

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Wang Kaihua, Yang Huanyu, Li Siming, et al. Research on an X-band high-transmittance radar radome structure[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250439

Citation:

Wang Kaihua, Yang Huanyu, Li Siming, et al. Research on an X-band high-transmittance radar radome structure[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250439

Wang Kaihua, Yang Huanyu, Li Siming, et al. Research on an X-band high-transmittance radar radome structure[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250439

Citation:

Wang Kaihua, Yang Huanyu, Li Siming, et al. Research on an X-band high-transmittance radar radome structure[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250439

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Research on an X-band high-transmittance radar radome structure

doi: 10.11884/HPLPB202638.250439

Wang Kaihua^{1, 2
,},
Yang Huanyu¹,
Li Siming¹,
Guo Cheng¹,
Zhao Qing^{1
,
,}

1.
College of Resources and Environment, University of Electronic Science and Technology, Chengdu 611731, China
2.
PowerChina Sinohydro Bureau 7 Co., Ltd, Chengdu 611730, China

Received Date: 2025-12-03
Accepted Date: 2026-02-02
Rev Recd Date: 2026-02-09

Available Online: 2026-02-28

Abstract

Abstract

Background
Radar protective enclosures often attenuate electromagnetic waves and reduce the received signal level, especially in high-frequency shallow-layer detection. This attenuation can narrow the usable bandwidth and weaken target responses in practical deployment.
Purpose
This study aims to design a miniaturized, high-transmittance Frequency Selective Surface (FSS) that restores transmission through an enclosure while keeping a compact unit cell for integration and manufacturing.
Methods
We designed a resonant unit that coupled upper and lower metal patches with a metal grid. We used an equivalent-circuit model to describe the structure and to link physical geometry to coupling capacitance and resonance. We then ran full-wave simulations to quantify transmission, bandwidth, and electrical size. We fabricated samples and measured them with microwave test equipment to verify the simulated response under realistic conditions.
Results
The simulations showed stable transmission above 90% across 9.5–10.5 GHz. The design achieved miniaturization, and the unit electrical size was approximately one-thirteenth of the operating wavelength. The measurements confirmed transmission above 90% across 9.6–10.3 GHz. The measured curves matched the simulated trends and resonant features, which supported the circuit-based interpretation.
Conclusions
The proposed miniaturized FSS provides high transmission with a compact footprint and good practical tolerance to deployment constraints. It offers a direct design reference for high-frequency radar enclosures that require both electromagnetic transparency and structural compatibility.
- frequency selective surface,
- X-band,
- miniaturization,
- high transmission rate,
- equivalent circuit model,
- microwave measurement

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References(13)

References

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