Author, as appears in the article.: Lazaro M; Lazaro A; Villarino R

Department: Enginyeria Electrònica, Elèctrica i Automàtica

e-ISSN: 1424-8220

URV's Author/s: Lázaro Guillén, Antonio Ramon / Lázaro Martí, Marc / Villarino Villarino, Ramón Maria

Keywords: Wearable Lora Implant Body area networks Backscatter Antenna

Abstract: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This paper presents a method for low data rate transmission for devices implanted in the body using backscattered Long Range (LoRa) signals. The method uses an antenna loaded with a switch that changes between two load impedances at the rate of a modulating oscillator. Consequently, the LoRa signal transmitted by a LoRa node is reflected in the adjacent channels and can be detected with a LoRa gateway tuned to the shifted channels. A prototype developed to operate at Medical Implant Communication Service (MICS) and the Industrial Scientific and Medical (ISM) 433 MHz band is presented. The prototype uses a commercial ceramic antenna with a matched network tuned to the frequency band with high radiation efficiency. The effect of the coating material covering the antenna was studied. Simulated and experimental results using a phantom show that it is feasible to read data from deep implanted devices placed a few meters from the body because of the high sensitivity of commercial LoRa receivers.

Thematic Areas: Zootecnia / recursos pesqueiros Química Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Linguística e literatura Letras / linguística Interdisciplinar Instruments & instrumentation Instrumentation Information systems Geografía Geociências Farmacia Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrochemistry Electrical and electronic engineering Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Biochemistry Atomic and molecular physics, and optics Astronomia / física Arquitetura, urbanismo e design Analytical chemistry

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: marc.lazaro@urv.cat ramon.villarino@urv.cat antonioramon.lazaro@urv.cat marc.lazaro@urv.cat

Author identifier: 0000-0001-9692-8943 0000-0003-3160-5777

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/1424-8220/20/21/6342

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Sensors. 20 (21): 1-26

APA: Lazaro M; Lazaro A; Villarino R (2020). Feasibility of backscatter communication using LoRAWAN signals for deep implanted devices and wearable applications. Sensors, 20(21), 1-26. DOI: 10.3390/s20216342

Article's DOI: 10.3390/s20216342

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

Publication Type: Journal Publications