A circularly polarized antenna for UHF RFID reader

Phatra, C.; Krachodnok, P.

doi:10.1109/ecticon.2014.6839812

Cited by 3 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With these elements, the reader is able to detect the tag in the Plexiglas rack cage after a few seconds. The reader antenna inspired from [36] is presented in Figure 15. It is made up of an annular ring slot, excited by a microstrip line on the lower face of the substrate.…”

Section: Resultsmentioning

confidence: 99%

A Miniature Implanted Antenna for Uhf Rfid Applications

Nguyễn¹,

Diallo²,

Thuc³

et al. 2020

PIER C

View full text Add to dashboard Cite

In this paper, the design of a miniature antenna dedicated to be implanted in a small animal and intended to work in the European UHF RFID (865-868 MHz) band is presented. One of the goals of this work is the miniaturization of the radiating element while preserving its efficiency to allow a reliable communication between an external interrogating reader and the implanted device. The radiating element is a small rectangular loop antenna associated with a dipole allowing impedance matching. The antenna has dimensions of 2.4 mm × 25.4 mm × 0.5 mm and integrates an Impinj Monza 4 chip presenting an impedance of 5.5 − j74 Ohms at 868 MHz. The antenna is designed and optimized by using the ANSYS HFSS software. The obtained results show a simulated radiation efficiency of 0.7% and simulated total gain of −17.5 dBi. A prototype is realized, and RSSI measurements have demonstrated the possibility of reliable wireless communications between the implanted antenna and an external reader. In addition, Specific Absorption Rate (SAR) calculation indicates that this implanted antenna meets the required safety regulations.

show abstract

Section: Resultsmentioning

confidence: 99%

A Miniature Implanted Antenna for Uhf Rfid Applications

Nguyễn¹,

Diallo²,

Thuc³

et al. 2020

PIER C

View full text Add to dashboard Cite

show abstract

“…The characteristics of the reader and its antenna are given in Table 1: The reader antenna inspired from [17], is presented in Fig. 5.…”

Section: Link Budget Caculationmentioning

confidence: 99%

Wireless interrogation of small animal phantoms with a miniature implanted UHF RFID tag

Nguyễn

Diallo

Thuc

et al. 2017

2017 IEEE Conference on Antenna Measurements &Amp; Applications (CAMA)

View full text Add to dashboard Cite

In this article, the RSSI measurement with a miniature implanted tag into a small animal phantom, intended to work in the European UHF RFID band is presented. The miniaturization of the radiating element while preserving its efficiency allows the reliable communication between an external interrogation device and the identification tag aimed to be implanted into a small animal. The paper first presents the design of the miniature radiating element. Then, the detailed process to calculate the link budget allowing the estimation of the theoretical power received by the reader is described, showing that the gain of the proposed antenna is adapted to the application. Finally, the measurement of the Received Signal Strength Indication (RSSI) level received by the reader antenna for different positions of a mouse phantom model in a cage is presented. Results show that the proposed antenna can allow the identification of the small animal whatever its position in the cage.

show abstract