3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications

This paper presents electromagnetic encoders useful for chipless-RFID and motion control applications. The encoders consist in a pair of linear chains of rectangular apertures implemented by means of 3D printing. One of these chains is periodic and acts as a clock, whereas the other chain contains a...

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Main Authors: Ferran Paredes, Cristian Herrojo, Ferran Martín
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/10/10/1154
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author Ferran Paredes
Cristian Herrojo
Ferran Martín
author_facet Ferran Paredes
Cristian Herrojo
Ferran Martín
author_sort Ferran Paredes
collection DOAJ
description This paper presents electromagnetic encoders useful for chipless-RFID and motion control applications. The encoders consist in a pair of linear chains of rectangular apertures implemented by means of 3D printing. One of these chains is periodic and acts as a clock, whereas the other chain contains an identification (ID) code. With these two aperture chains, the ID code can be synchronously read, so that the relative velocity between the tag and the reader is irrelevant. Additionally, it is shown in the paper that by properly designing the reader, it is possible to determine the motion direction. The sensitive part of the reader is a microstrip line loaded with three complementary split ring resonators (CSRRs) etched in the ground plane and fed by three harmonic signals. By encoder motion, the characteristics of the local medium surrounding the CSRRs are modified, and the harmonic signals are amplitude modulated (AM) at the output port of the line, thereby providing the clock signal (which gives the encoder velocity), the ID code (providing also the quasi-absolute position) and the direction of motion. A fabricated prototype encoder is characterized by reading it with a dedicated reader.
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spelling doaj.art-48a9122360834367a191fd75d0b1ac112023-11-21T19:29:12ZengMDPI AGElectronics2079-92922021-05-011010115410.3390/electronics101011543D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control ApplicationsFerran Paredes0Cristian Herrojo1Ferran Martín2CIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra, SpainCIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra, SpainCIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193 Bellaterra, SpainThis paper presents electromagnetic encoders useful for chipless-RFID and motion control applications. The encoders consist in a pair of linear chains of rectangular apertures implemented by means of 3D printing. One of these chains is periodic and acts as a clock, whereas the other chain contains an identification (ID) code. With these two aperture chains, the ID code can be synchronously read, so that the relative velocity between the tag and the reader is irrelevant. Additionally, it is shown in the paper that by properly designing the reader, it is possible to determine the motion direction. The sensitive part of the reader is a microstrip line loaded with three complementary split ring resonators (CSRRs) etched in the ground plane and fed by three harmonic signals. By encoder motion, the characteristics of the local medium surrounding the CSRRs are modified, and the harmonic signals are amplitude modulated (AM) at the output port of the line, thereby providing the clock signal (which gives the encoder velocity), the ID code (providing also the quasi-absolute position) and the direction of motion. A fabricated prototype encoder is characterized by reading it with a dedicated reader.https://www.mdpi.com/2079-9292/10/10/1154chipless-RFIDmotion controlelectromagnetic encoders3D-printingdielectric permittivitymicrostrip technology
spellingShingle Ferran Paredes
Cristian Herrojo
Ferran Martín
3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications
Electronics
chipless-RFID
motion control
electromagnetic encoders
3D-printing
dielectric permittivity
microstrip technology
title 3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications
title_full 3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications
title_fullStr 3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications
title_full_unstemmed 3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications
title_short 3D-Printed Quasi-Absolute Electromagnetic Encoders for Chipless-RFID and Motion Control Applications
title_sort 3d printed quasi absolute electromagnetic encoders for chipless rfid and motion control applications
topic chipless-RFID
motion control
electromagnetic encoders
3D-printing
dielectric permittivity
microstrip technology
url https://www.mdpi.com/2079-9292/10/10/1154
work_keys_str_mv AT ferranparedes 3dprintedquasiabsoluteelectromagneticencodersforchiplessrfidandmotioncontrolapplications
AT cristianherrojo 3dprintedquasiabsoluteelectromagneticencodersforchiplessrfidandmotioncontrolapplications
AT ferranmartin 3dprintedquasiabsoluteelectromagneticencodersforchiplessrfidandmotioncontrolapplications