Detecting range and coupling coefficient tradeoff with a multiple loops reader antenna for small size RFID LF tags

International audienceThis paper summarizes some tests with Low Frequency (LF, 125 kHz) RFID tags of two types: Card and Token. These tests were done in order to evaluate the feasibility of an identification/traceability of tags which size is constrained and supposed to be detected inside a delimited volume of 40×40×10 cm 3 . As the size of the antenna tag is supposed to be very small, we improve the detection range and volume of definition by designing different reader antennas. Reader antennas presented are of two types whether they are based on single (SL) or multiple loops (ML). Detection range was evaluated for planar antennas (3 SL and one ML). Volume of definition for the detection was estimated by designing two-level prototypes of ML antennas. Results are discussed about the optimization possibility of detection range and volume thanks to ML

Coaxially distributed diameter sub-coil twisted loop antenna in HF RFID

This paper proposes an HF (High Frequency) transmitting coil less sensitive to the angular and position misalignments of the small receiving coil. The DDC (Distributed Diameter Coil) shape and TLA (Twisted Loop Antenna) allow respectively minimizing the disturbance of the magnetic link due to the lateral misalignment and the relative tilting direction of the transmitting coil to the receiving coil. The magnetic coupling link obtained from DDC TLA coils is illustrated by comparison with conventional TLA in the case of HF RFID

Study of a Microwave Coupled Lines Filter: From Clean Room Realization to Measurement and Back-Simulation

International audienc

Symposium committee

International audienc

Table of contents

International audienc

MicroElectrode Array (MEA), a way to access to the Neural code for in-vitro and in-vivo applications, principle and fabrication

International audienc

Mathematical Modeling with Experimental Verifications of Non-invasive Blood Flow Acquired Using the Method of Magnetic Disturbance

International audienc

Sensors vol.17(8) Special Issue "State-of-the-Art Sensors Technology in France 2016"

This special Issue of Sensors journal aims to provide a comprehensive overview of state-of-the-art sensors technology in Franc

Non-invasive measurement of blood flow using magnetic disturbance method

International audienc

Sensors vol.17(8) Special Issue "State-of-the-Art Sensors Technology in France 2016"

This special Issue of Sensors journal aims to provide a comprehensive overview of state-of-the-art sensors technology in Franc