Improvement of Reading Performance of Frequency-Domain Chipless RFID Transponders

Directly Printable Organic ASK Based Chipless RFID Tag for IoT Applications

“…Coupling between resonators is avoided using position strategy [22]. All vertical resonators are not equally spaced from each other.…”

Polarisation independent chipless RFID tag based on circular arrangement of dual‐spiral capacitively‐loaded dipoles with robust RCS response

“…Given the results of single scatterer analysis [15,16] completed by the study of RCS performance of scatterer development versions, the DS CLD was chosen as a promising candidate for significant improvement of parameter performance of the chipless RFID tag (see Figs. 1 and 2).…”

“…A strong mutual coupling between neighbouring elements of scatterers array negatively affects the amplitude uniformity and frequency stability of the RCS response [14,15]. As a consequence, the topology configurations of the array minimising the adjacent element mutual coupling are highly desirable.…”

“…It potentially enables to design fully printed transponders without chips [7]. The chipless tags based on spectral signature [8][9][10][11][12][13][14][15][16][17][18][19][20], mostly consisting of an array of planar resonators or scatterers etched on dielectric substrate, belong to the notable examples of the said technology. The presence or absence of each resonator's peak in the tag's spectral signature represents logical one or zero, respectively.…”

Semi-Platform Tolerant 20-bit Chipless RFID Tag Composed of Dipole Array Closely Coupled to Plate

“…In this concept, presence or absence of each resonant peak or drop in tag's spectral signature represents logic one or zero, respectively. These tags have been intensively investigated recently [1][2][3][4][5][6], and have a potential to be a microwave frequency equivalent of optical barcodes systems. However, number of issues must be solved such as sufficient spectral bit capacity and space bit density, frequency and amplitude stability of the RCS response in case that the zero bits are coded, radar cross section (RCS) response level and resonance peak or drop depth in the RCS response; [5][6].…”