ock-in amplifier as an alternative for reading Radio-Frequency identification (RFID) tags in sensing application

Autor(es)

De Lima, Guilherme R. ^[1] ; Gozzi, Giovani ^[2] ; Fugikawa-Santos, Lucas ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Inst Biosci Letters & Exact Sci, Sao Jose Do Rio Preto, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Inst Geosci & Exact Sci, Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Instrumentation Science & Technology; v. 50, n. 3 SEP 2021.
• Citações Web of Science: 0

Resumo

High-frequency (HF) radio-frequency identification (RFIDs) tags can be combined to electrodes coated with semiconducting thin-films to produce low-cost and disposable sensors with wireless capabilities. Mobile phone applications generally use near-field connection (NFC) to read chip digital information, providing discrete information from the device. To obtain a continuous analogic reading, more sophisticated equipment such as spectrum analyzers are needed. In the present article, we describe a method to obtain the frequency response spectrum of RFID tags using synchronous detection via a lock-in amplifier. The tags were coupled to interdigitated electrodes coated with semiconducting metal oxides (SMOs) to produce UV-sensors and with semiconducting polymer polyaniline (Pani) as chemically responsive wireless devices for the proof-of-concept of the developed method. (AU)

• Processo FAPESP: 19/08019-9 - Transistores transparentes/flexíveis: do estudo de propriedades de transporte ao desenvolvimento de circuitos
• Beneficiário: Lucas Fugikawa Santos
• Modalidade de apoio: Auxílio à Pesquisa - Regular