A Passive RFID Tag For Biomass Tracking

Abstract

This paper presents the design for a low cost miniaturized chipless RFID tag for short-range biomass tracking and monitoring purposes. The concentric hexagonal geometry and angular stability, leading to higher data capacity are the novel aspects of the proposed design, which can encode four data bits within a compact size of 1 cm radius. The designed is capable of encoding 2 n unique IDs in a 4-to-9 GHz frequency band, where n is the number of etched slots. The angular stability makes this tag readable from any angle in biomass. Moreover, this chipless RFID tag has no hazard as compared to battery-based active tags during biomass combustion processes.

Impact of dielectric substrates on chipless RFID tag performance

“…The captured RCS data have distinguished spectral signatures for the corresponding 5-bit tag, which means the number of slots has 1:1 correspondence to the number of encoded spectral signatures. This tag can be extended to an n-number of slots by adding more slots and increasing the total size which gives 2 n different IDs [17].…”

“…The main objective of this article is to design a C-RFID tag whose spectral signature can be achieved with a range of different dielectric substrates as per the application requirement to improve the practical implementation. The hexagonal shape slots were selected for geometrical structure due to its space-efficient, maximum angular stability, and minimum mutual coupling [17,18]. CST designing and simulating software was used for designing the basic unit.…”

“…Some of the applications need a normal size chipless RFID tag with no sensing functionality, such as that used in shopping mall for tagging the items [12]. In such applications, thin substrates with low tangent loss and low permittivity, such as PEN, Roger Duroid, Taconic TLX-0, PET, cardboard, Kapton, FR4, and mica, are used for designing RFID tags [5,7,17,[30][31][32]. In contrast, other application needs a smaller size tag such as 5G technology [33], along with environmental parameter monitoring/sensing functionality.…”