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Metasurfaces for Enhanced Communication and Radar Detection

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Radar Sensors".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 336

Special Issue Editors


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Guest Editor
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
Interests: metamaterial and metasurface; ground penetrating radar; antennas
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
College of Communication and Information Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
Interests: wireless communication; reconfigurable intelligent metasurface; metantennas
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metasurfaces are artificial ultra-thin metamaterials with two-dimensional structures, whose thickness is much smaller than the lateral dimensions. They are composed of subwavelength unit cells arranged on a specific plane. Metasurfaces can locally alter the amplitude, phase, and polarization of electromagnetic waves, fundamentally changing the way electromagnetic waves interact with matter. Therefore, metasurfaces have a significant impact on imaging, communication, sensing and radar applications. Motivated by these opportunities, this Special Issue of Sensors aims to provide a platform for the recent progress in advanced metasurface technologies. Topics of interest include, but are not limited to, the following:

  • Metasurfaces for communication applications;
  • Metasurfaces for radar detection;
  • Metasurfaces for integrated sensing and communication;
  • Programmable metasurfaces;
  • Reconfigurable intelligent metasurface;
  • Metasurface antennas for radars or communication;
  • Metasense;
  • Matasurface-based antennas.

Dr. Linyan Guo
Prof. Dr. Xiaojun Huang
Guest Editors

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Keywords

  • metasurfaces
  • metamaterials
  • metantennas
  • metadevices
  • communication
  • radar detection

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Published Papers (1 paper)

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Research

10 pages, 3365 KiB  
Article
Design of Small-Sized Spiral Slot PIFA Antenna Used Conformally in Laminated Body Tissues
by Rong Li, Jian Liu, Cuizhen Sun, Wang Yao, Ying Tian and Xiaojun Huang
Sensors 2025, 25(9), 2938; https://doi.org/10.3390/s25092938 - 7 May 2025
Viewed by 158
Abstract
This paper presents a novel Spiral Slot Planar Inverted-F Antenna (SSPIFA) specifically designed for telemedicine and healthcare applications, featuring compact size, biocompatible safety, and high integration suitability. By replacing the conventional top metal patch of a Planar Inverted-F Antenna (PIFA) with a slot [...] Read more.
This paper presents a novel Spiral Slot Planar Inverted-F Antenna (SSPIFA) specifically designed for telemedicine and healthcare applications, featuring compact size, biocompatible safety, and high integration suitability. By replacing the conventional top metal patch of a Planar Inverted-F Antenna (PIFA) with a slot spiral radiator whose geometry is precisely matched to the ground plane, the proposed antenna achieves a significant size reduction, making it ideal for encapsulation in miniaturized medical devices—a critical requirement for implantation scenarios. Tailored for the ISM 915 MHz band, the antenna is fabricated with a four-turn slot spiral etched on a 30 mm-diameter dielectric substrate, achieving an overall height of 22 mm and an electrically small profile of approximately 0.09λ × 0.06λ (λ: free-space wavelength at the center frequency). Simulation and measurement results demonstrate a −16 dB impedance matching (S11 parameter) at the target frequency, accompanied by a narrow fractional bandwidth of 1% and stable right-hand circular polarization (RHCP). When implanted in a layered biological tissue model (skin, fat, muscle), the antenna exhibits a near-omni directional radiation pattern in the azimuthal plane, with a peak gain of 2.94 dBi and consistent performance across the target band. These characteristics highlight the SSPIFA’s potential for reliable wireless communication in implantable medical systems, balancing miniaturization, radiation efficiency, and biocompatible design. Full article
(This article belongs to the Special Issue Metasurfaces for Enhanced Communication and Radar Detection)
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