Bandwidth enhancement of resonating absorber using a lossy dielectric layer for RCS reduction in X-band
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Inbavalli V. Palaniappan
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SureshKumar T. Rajamanickam
Abstract
In this paper, a resonating absorber is proposed for radar cross section reduction in the X-band, with the inclusion of a high loss dielectric layer. The absorber consists of a pair of co-centered resonating Jerusalem cross printed on a FR4 substrate cascaded with a high-loss dielectric layer and a metallic back plane. The designed absorber offers 90 % absorption from 7.8–12 GHz with a fractional bandwidth of 42.42 %. The designed absorber is 0.106λ L thick with a compact square unit cell of size 0.076λ L (wavelength at the lowest frequency). An equivalent circuit model is developed to analyze the proposed absorber. The absorber is angularly stable for varying angle of incidences up to 40°–60° for TE and TM polarizations respectively. The planar as well as the conformal structure of the proposed absorber offer a minimum 10 dB radar cross section reduction in the X-band. The conventional approach which involves complex fabrication process of soldering thousands of lumped resistors to increase the bandwidth, whereas the proposed absorber is realized to offer wide absorption using simple PCB etching technique. To validate the design prototype is fabricated and the measurement is carried out.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The author states no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
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© 2024 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Accurate channel estimation of on-grid partially coherent compressive phase retrieval for mmWave massive MIMO systems
- Bandwidth enhancement of resonating absorber using a lossy dielectric layer for RCS reduction in X-band
- Graphene-based tunable dual-band polarization sensitive absorber for applications in the terahertz regime
- Graphene-based compact polarization-insensitive broadband terahertz absorber for sensing applications
- Broadband metasurface-based reflective polarization converter
- Using one-dimensional thinned antenna arrays to form a two-dimensional MIMO antenna array
- Dual-resonance dielectric resonator-based MIMO antenna for Sub-6 GHz 5G and IoT applications
- Implantable F-shaped antenna with 93.32 Mbps speed for Intra-body communications
- Frequency and pattern reconfigurable arrow shape patch antenna with a PIN diode
- Data driven modeling for linearization of particle accelerator RF power source
Artikel in diesem Heft
- Frontmatter
- Accurate channel estimation of on-grid partially coherent compressive phase retrieval for mmWave massive MIMO systems
- Bandwidth enhancement of resonating absorber using a lossy dielectric layer for RCS reduction in X-band
- Graphene-based tunable dual-band polarization sensitive absorber for applications in the terahertz regime
- Graphene-based compact polarization-insensitive broadband terahertz absorber for sensing applications
- Broadband metasurface-based reflective polarization converter
- Using one-dimensional thinned antenna arrays to form a two-dimensional MIMO antenna array
- Dual-resonance dielectric resonator-based MIMO antenna for Sub-6 GHz 5G and IoT applications
- Implantable F-shaped antenna with 93.32 Mbps speed for Intra-body communications
- Frequency and pattern reconfigurable arrow shape patch antenna with a PIN diode
- Data driven modeling for linearization of particle accelerator RF power source
