Design and experimental evaluation of compact RFID tags for UHF RFID applications
Notice bibliographique
Résumé
Radio frequency identification (RFID) has become one of the fastest growing wireless technologies. An RFID system is a real-time processor that enables the information stored on a tag to be tracked and exchanged remotely with an RFID reader. The RFID tag plays a critical role in determining the overall performance of the entire system, as well as its size, cost and detection range. In this thesis, various miniaturized RFID tag antennas are investigated and implemented for conventional and emerging passive ultra high frequency (UHF) RFID applications. First, the design and experimental evaluation of three compact printed tag antennas including folded, 2D and 3D meander monopoles are presented. Next, designing a new miniaturized tunable passive UHF RFID tag is undertaken with the operation frequency covering the entire range of the UHF RFID regulated bands (840-960 MHz). This design method not only can be used in tags targeting the global RFID market, but also is crucial for the successful implementation of an RFID system that is tolerant of detuning due to fabrication process variations and loading of deployment environment. As well, a low profile RFID tag consisting of a compact microstrip patch antenna backed by a mushroom-type Electromagnetic Band Gap (EBG) structure is proposed. This design which achieves an area reduction of 29.11% compared to a conventional patch yields a maximum reading range of around 11 m as a free standing tag and when attached to a metallic surface.To extend the reading range of the RFID tag, a solar panel is integrated with the patch antenna to boost the RFID chip's operating power. Furthermore, new aspects of antenna and RFID chip integration in multi-port/antenna arrangements are explored through the design and measurement of tag prototypes.RFID technology has recently been employed in sensor applications for low-cost low-power wireless sensor node implementation. This thesis also presents novel dual-port UHF RFID tag antennas for simultaneous wireless identification and sensor applications. Special RFID tag antennas are designed and integrated with passive resistive sensors demonstrating detection of sensor data by utilizing a commercial RFID reader. Finally, another RFID-tag-sensor for transmission of generic sensor data is implemented, which also includes solar energy harvesting. This design is further improved by employing a novel two-port patch antenna that collects the ambient RF energy through its second port. A reliable RFID communication range of up to 27 m was achieved in an indoor measurement scenario, which represents, to the author's knowledge, the longest distance ever reported for similar sensor-enhanced RFID tags.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».