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High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications

  • Imen Merabet EMAIL logo , Khaled Rouabah , Massinissa Belazzoug , Youcef Braham Chaouche and Tayeb A. Denidni
Published/Copyright: July 2, 2025
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Frequenz
From the journal Frequenz Volume 79 Issue 9-10

Abstract

In this paper, we propose an ultra-wideband (UWB) Fabry–Perot cavity (FPC) antenna with dual-notch (DN) bands, utilizing a partially reflective surface (PRS) as a superstrate and an artificial magnetic conductor (AMC) reflector to support and enhance a DN band UWB antenna. The antenna components work synergistically to improve gain and provide directional radiation characteristics, while effectively mitigating interference from 5G and WLAN signals in urban environment. The proposed FPC design is executed in two main steps. First, a planar monopole UWB antenna is designed to operate within the frequency range of 2.69 GHz–12.27 GHz, incorporating a DN at 5G-3.5 GHz and 5 GHz WLAN bands through a single-slotted electromagnetic bandgap (EBG) unit-cell placed near the feedline. Second, a 5 × 5 array of AMC reflector elements and a PRS are strategically placed at specific distances from the UWB antenna to increase the gain. The resulting FPC structure was designed, optimized in HFSS, fabricated, and experimentally validated. Both measured and simulated results confirm that the proposed FPC structure achieves a peak gain of 10.21 dBi at 8.8 GHz, highlighting its potential to address challenges in meeting UWB application requirements, including Radar systems dedicated to high-resolution infrastructure monitoring and microwave medical imaging.

Keywords: Fabry Perot cavity; UWB; gain improvement; dual-notched band; AMC; PRS
Corresponding author: Imen Merabet, Electrical Systems Engineering Department, LIST Laboratory, University M’hamed Bougara of Boumerdes, Boumerdes, Algeria, E-mail:

  1. Research ethics: Not applicable.

  2. Informed consent: Not applicable.

  3. Author contributions: The 1st author proposed the antenna structure, meticulously designed the model in HFSS, supervised the manufacturing process of the final structure, drafted the initial version of manuscript, and verified the coincidence between the simulated and measured results; The second author, as thesis supervisor, critically reviewed the manuscript’s structure, reorganized key sections, made comprehensive corrections to enhance both the content and the clarity of the paper, and verified the coincidence between the simulated and measured results. The 3rd author, as thesis co-supervisor, verified the accuracy and validity of the simulated results, particularly focusing on technical aspects, contributed to the revision of the manuscript, and verified the coincidence between the simulated and measured results. The 4th author conducted extensive measurements on the manufactured structure, including essential parameters such as the reflection coefficient, gain, and radiation pattern, ensuring the accuracy and reliability of the experimental results. The 5th author, as the Director of Laboratory, provided final verification of the technical aspects of the measured results, ensuring their alignment with the expected performance of the manufactured structure.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The author states no conflict of interest.

  6. Research funding: None declared.

  7. Data availability: Not applicable.

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Received: 2024-11-17
Accepted: 2025-06-12
Published Online: 2025-07-02
Published in Print: 2025-10-27

© 2025 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Review Articles
  3. Advances in antenna design through characteristic modes: a review of simulation techniques and development
  4. A review on soft computing optimization techniques for electromagnetics
  5. Editorial
  6. Design of wideband filtering phase shifters with wide stopband
  7. Research Articles
  8. Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
  9. Balanced dual-band BPF with enhanced DM selectivity and stopband suppression
  10. Balanced dual-wideband BPF utilizing quad-mode slotline resonator
  11. Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
  12. High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications
  13. A four port MIMO antenna using chip resistor based decoupling in 5G and 6G applications
  14. Contactless early-stage deep seated breast tumor detection using circular slotted patch antenna
  15. An ultraminiaturized implantable antenna with low SAR for biotelemetry
https://doi.org/10.1515/freq-2024-0348
Keywords for this article
Fabry Perot cavity; UWB; gain improvement; dual-notched band; AMC; PRS

Articles in the same Issue

  1. Frontmatter
  2. Review Articles
  3. Advances in antenna design through characteristic modes: a review of simulation techniques and development
  4. A review on soft computing optimization techniques for electromagnetics
  5. Editorial
  6. Design of wideband filtering phase shifters with wide stopband
  7. Research Articles
  8. Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
  9. Balanced dual-band BPF with enhanced DM selectivity and stopband suppression
  10. Balanced dual-wideband BPF utilizing quad-mode slotline resonator
  11. Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
  12. High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications
  13. A four port MIMO antenna using chip resistor based decoupling in 5G and 6G applications
  14. Contactless early-stage deep seated breast tumor detection using circular slotted patch antenna
  15. An ultraminiaturized implantable antenna with low SAR for biotelemetry
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