Chipless RFID Sensors

Abstract

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Graphene and MWCNT Printed Films: Preparation and RF Electrical Properties Study

“…Among the different investigations concerning carbonbased composites, a "niche" field is represented by thick films [10]. Their possible applications span from gas sensors and RFID [11,12] to actuators and conductive electrodes [13,14] and microwave sensors [15]. Screen printing constitutes the most employed additive manufacturing technique for the deposition of thick films [16].…”

Novel sensing techniques of chipless RFID sensor for infrastructure

“…On the other hand, the durability of infrastructure and buildings has already exceeded 30 years, so even a battery-less RFID sensor is difficult to meet the durability. In order to solve this challenge, we looked into a possibility of "Chipless RFID sensor (Chipless sensor)" [2] technology that can detect the sensor value only with metal pattern. By irradiating electromagnetic waves, the metal pattern resonates and can detect the sensor value.…”

“…The tag has a metal etched pattern on the base material. In these researches, we adopted the frequency-domain system where IDs are generated as resonance peaks in specific frequency band [2]. Electromagnetic waves were irradiated toward the chipless sensor using a network analyzer (KEYSHIGHT: E5071C), and the reflected waves were detected as resonant peak of Radar Cross Section value using reference sphere.…”

Inkjet printed nanomaterial based flexible radio frequency identification (RFID) tag sensors for the internet of nano things

“…The chipless passive RFID tags can be easily inkjet-printed on a variety of exible substrates including paper, plastic, metal, and textile surfaces and show stability against oxidative environmental conditions. [76][77][78][79][80] The applications of chipless RFID tag have been demonstrated for item tracking, 81 humidity sensing, 82,83 temperature, 84 light, 85 pipeline for corrosion, 86 and evacuation procedures. 87 The battery-free (passive) chipless RFID tag is an ideal candidate for wireless communication technology for commercial applications in emerging IoT industries.…”