Antennas and RF Circuits on Biobased Substrates: Development, Performance and Integration

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: 15 October 2025 | Viewed by 341

Special Issue Editors


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Guest Editor
CROMA Laboratory, Universite Savoie Mont Blanc, Le Bourget du Lac, France
Interests: high-frequency measurement and characterization of devices (passive components and materials); development of HF parameter extraction techniques; antenna analysis and design
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
CROMA Laboratory, Universite Savoie Mont Blanc, Le Bourget du Lac, France
Interests: high-frequency measurement and characterization of devices (passive components and materials); development of HF parameter extraction techniques; antenna analysis and design
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue will address the field of RF elements and biobased substrates. Due to the current need to fabricate “greener” electronics, we must develop systems using more environmentally friendly substrates, such as paper, cellulose and textiles. Various printing techniques must therefore be implemented on these greener circuits in order to deposit the metallization on the substrate; these techniques include microcontact printing, the screen-printing method and wire weaving. These circuits, when printed onto biobased substrates, must also exhibit an interesting performance. The scope of this Special Issue includes novel areas of application and means of integrating these communicating elements, such as woven metallization on textiles (smart textiles) and the printing of antennas or circuits onto flexible substrates. This includes, for instance, RFID applications, 5G and 6G wireless technologies and filtering.

We welcome the submission of articles that address the following topics:

  • antennas and RF circuits on biobased substrates
  • textile antennas and RF circuits
  • flexible substrates
  • metallization printing techniques
  • high-gain antennas
  • reconfigurable antennas and circuits
  • miniaturized antennas and circuits
  • antenna beamforming
  • antenna beam steering
  • antenna integration techniques

Dr. Gregory Houzet
Dr. Thierry Lacrevaz
Guest Editors

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Keywords

  • biobased substrates for RF electronics
  • textile antennas and circuits
  • flexible antennas and circuits
  • printing techniques
  • high-gain antennas
  • reconfigurable antennas and circuits
  • miniaturized antennas and circuits
  • antenna beamforming
  • antenna beam steering
  • integration techniques

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Published Papers (1 paper)

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Research

16 pages, 8002 KB  
Article
A High-Gain Reconfigurable Beam-Switched Circular Array Antenna Based on Pentagonal Radiating Elements Fed by Mutual Coupling for Sub-6 GHz Wireless Application Systems
by Faouzi Rahmani, Moustapha El Bakkali, Aziz Dkiouak, Naima Amar Touhami, Abdelmounaim Belbachir Kchairi, Bousselham Samoudi and Laurent Canale
Electronics 2025, 14(18), 3701; https://doi.org/10.3390/electronics14183701 - 18 Sep 2025
Viewed by 154
Abstract
This paper presents the design and development of a reconfigurable circular array antenna capable of producing ten distinct radiation beams, intended for wireless systems in the sub-6 GHz frequency band. The antenna structure is based on four pentagon-shaped radiating elements arranged symmetrically around [...] Read more.
This paper presents the design and development of a reconfigurable circular array antenna capable of producing ten distinct radiation beams, intended for wireless systems in the sub-6 GHz frequency band. The antenna structure is based on four pentagon-shaped radiating elements arranged symmetrically around a central circular patch, which is excited through a coaxial feed. These radiating elements are linked by four circular segments, ensuring mutual coupling for effective operation. A systematic dimensional analysis has been conducted to optimize electromagnetic performance, resulting in a compact and efficient architecture. The beam reconfiguration is achieved through the control of four PIN diodes, which allow the main radiation beam to switch among ten different orientations in the azimuth plane. Specifically, the antenna supports eight directional states, oriented at 45° intervals, and two additional bidirectional states covering opposite directions. A prototype has been fabricated and experimentally validated, confirming the steering capability of ±40° in both the XZ and YZ planes. Performance evaluation shows a maximum gain of 9.29 dBi and efficiency levels ranging from 91% to 97%. Bandwidth varies across states, with 9.72% for S1–S7, 7.45% for S2–S8, and 4.61% for S9–S10. Overall, the proposed design demonstrates optimized bandwidth, gain, efficiency, and complete azimuthal coverage. Full article
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