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Advances in Chipless RFID Sensors and Systems

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

Deadline for manuscript submissions: closed (30 April 2025) | Viewed by 2827

Special Issue Editors


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Guest Editor
Department of Electrical and Computer Systems Engineering, Monash University, 14 Alliance Lane, Clayton, VIC 3800, Australia
Interests: chipless RFID; smart antennas; microwave passive design; RFID reader; RFID middleware
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of IoT and Digital Communication Technology, RheinMain University of Applied Science, Russelsheim, Germany
Interests: chipless RFID; smart antennas; RFID reader; UWB-MIMO wireless communications; channel modeling; cognitive radios and test-beds implementations
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to new advances in the development of innovative solutions for smart chipless RFID Sensors and their corresponding applications in daily life.

This Special Issue is particularly interested in presenting challenges and advances in the design of chipless RFID tags and sensors, signaling schemes and protocols for multi-tag scenarios, RCS manipulation techniques, and chipless RFID systems and channel modeling. This Special Issue will also address topics related to detection techniques, coding algorithms and MIMO sensors and tag arrays. The integration of chipless RFID systems into IoT cloud and artificial intelligent techniques for detection will also be discussed in this Special Issue. Furthermore, contributions discussing the implementation processes and printing technologies associated with chipless sensors and their utilization in real-world and industrial applications will be considered.

Dr. Nemai Chandra Karmakar
Dr. Mohamed El-Hadidy
Guest Editors

Manuscript Submission Information

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Keywords

  • chipless RFID sensors and tags

  • RCS Manipulation
  • detection algorithms
  • coding techniques and protocols
  • sensors printing techniques
  • system and channel modeling
  • IoT networking for chipless sensors
  • artificial intelligent detection

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Published Papers (2 papers)

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Research

24 pages, 3369 KiB  
Article
Trade-Off Analysis for Array Configurations of Chipless RFID Sensor Tag Designs
by Likitha Lasantha, Biplob Ray and Nemai Karmakar
Sensors 2025, 25(6), 1653; https://doi.org/10.3390/s25061653 - 7 Mar 2025
Viewed by 439
Abstract
The accurate detection and reliable performance of chipless radio frequency identification (RFID) tags and sensors present significant challenges due to their inherently low radar cross section (RCS) and pronounced mutual coupling effects. These limitations adversely influence the quality (Q) factor and overall detectability, [...] Read more.
The accurate detection and reliable performance of chipless radio frequency identification (RFID) tags and sensors present significant challenges due to their inherently low radar cross section (RCS) and pronounced mutual coupling effects. These limitations adversely influence the quality (Q) factor and overall detectability, complicating the optimisation of chipless RFID systems for practical applications. This study investigates the performance characteristics and trade-offs among RCS, Q-factor, and detectability in Pi-shaped array configurations of chipless RFID tags. A comprehensive analysis of various array configurations is conducted, supplemented by a link budget evaluation to elucidate how different array structures impact system performance. The simulation results reveal that planar arrays outperform linear arrays in both RCS and Q-factor, highlighting essential trade-offs between tag identification range and angular coverage, which are influenced by array size and electromagnetic coupling. The findings emphasise optimising resonance quality and scattering efficiency to tailor chipless RFID systems for specific application requirements. This research provides valuable insights into the design and operation of chipless RFID arrays, contributing to their advancement in practical applications. Full article
(This article belongs to the Special Issue Advances in Chipless RFID Sensors and Systems)
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15 pages, 6650 KiB  
Article
Chipless RFID Sensor for Measuring Time-Varying Electric Fields Using a Contactless Air-Filled Substrate-Integrated Waveguide Resonator
by Amirmasoud Amirkabiri, Dawn Idoko, Behzad Kordi and Greg E. Bridges
Sensors 2024, 24(15), 4928; https://doi.org/10.3390/s24154928 - 30 Jul 2024
Viewed by 1736
Abstract
This paper presents a wireless chipless resonator-based sensor for measuring the absolute value of an external time-varying electric field. The sensor is developed using contactless air-filled substrate-integrated waveguide (CLAF-SIW) technology. The sensor employs a low-impedance electromagnetic band gap structure to confine the electric [...] Read more.
This paper presents a wireless chipless resonator-based sensor for measuring the absolute value of an external time-varying electric field. The sensor is developed using contactless air-filled substrate-integrated waveguide (CLAF-SIW) technology. The sensor employs a low-impedance electromagnetic band gap structure to confine the electric field within the sensor’s air cavity. The air cavity is loaded with varactor diodes whose reverse bias voltage is modified by the to-be-measured external electric field. Variation in the external electric field results in a variation of the sensor’s resonant frequency. The CLAF-SIW sensor offers a high unloaded quality factor, which is required for a long-distance ringback-based interrogation system. A prototype of the proposed sensor is fabricated and tested. It can measure a time-varying external electric field up to 6.9 kV/m, has a sensitivity of 1.86 (kHz)/(V/m), and can be interrogated from a distance of 80 cm. The feasible maximum bandwidth of the external electric field is 25 kHz. The proposed sensor offers a compact planar multilayer structure that can easily be incorporated with a planar antenna and its size can be reduced by selecting a higher operating frequency without an increase in dielectric loss. Full article
(This article belongs to the Special Issue Advances in Chipless RFID Sensors and Systems)
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