Arrangements of closely coupled UHF RFID tags are common in the industrial labelling and sensing of vaccines, and of stacks of small objects in general. The mismatch effect of coupling can be mitigated by the new family of auto-tuning ICs having a dynamic internal impedance. A network model is here introduced for the first time with the purpose to predict the response of sets of coupled auto-tuning tags. The analytical model reduces to a closed form description of the tags retuning capability in the particular case of two items in symmetric arrangement. Preliminary experimentations corroborate the theoretical dynamic responses of the ICs w.r.t. variable inter-tag distance. The model can be useful for a better understanding of the potentiality of this class of devices and to optimize their performance for advanced identification and sensing.

Panunzio, N., Marrocco, G. (2021). A Multi-port Formulation for Electromagnetic Coupled Auto-tuning RFID Antennas. In 2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021 (pp.1-4). Institute of Electrical and Electronics Engineers Inc. [10.23919/URSIGASS51995.2021.9560300].

A Multi-port Formulation for Electromagnetic Coupled Auto-tuning RFID Antennas

Marrocco G.
2021-01-01

Abstract

Arrangements of closely coupled UHF RFID tags are common in the industrial labelling and sensing of vaccines, and of stacks of small objects in general. The mismatch effect of coupling can be mitigated by the new family of auto-tuning ICs having a dynamic internal impedance. A network model is here introduced for the first time with the purpose to predict the response of sets of coupled auto-tuning tags. The analytical model reduces to a closed form description of the tags retuning capability in the particular case of two items in symmetric arrangement. Preliminary experimentations corroborate the theoretical dynamic responses of the ICs w.r.t. variable inter-tag distance. The model can be useful for a better understanding of the potentiality of this class of devices and to optimize their performance for advanced identification and sensing.
34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021
Rome, Italy
2021
Rilevanza internazionale
2021
Settore ING-INF/02 - CAMPI ELETTROMAGNETICI
English
Intervento a convegno
Panunzio, N., Marrocco, G. (2021). A Multi-port Formulation for Electromagnetic Coupled Auto-tuning RFID Antennas. In 2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021 (pp.1-4). Institute of Electrical and Electronics Engineers Inc. [10.23919/URSIGASS51995.2021.9560300].
Panunzio, N; Marrocco, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/299005
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