Designing UHF RFID tag antennas with Barcode shape for dual-technology identification

In this paper, a novel methodology to design Ultra High Frequency Radio-Frequency IDentification (UHF RFID) tag antennas with Barcode layout is proposed with the challenging goal of "fusing" both technologies in a single device. Specifically, after a brief recall of the well-known barcode standard, a procedure to design meandered barcode-shaped UHF RFID tags is introduced and discussed leveraging on electromagnetic evidence. The main steps of the proposed method are described by highlighting the constraints inherited by both the adopted technologies, as well as the useful opportunities to automatise the entire antenna design process after a preliminary simulation campaign through a full-wave simulator. Different RFID-Barcode tag antennas are designed, manufactured, and characterised in terms of maximum reading range and tag sensitivity. Obtained results demonstrate the validity of the proposed approach

Multiple-choice question enhanced with interactive software for autonomous learning

International audienceThis paper introduces an original approach of a customized Multiple-Choice Question (MCQ). Compared to traditional MCQ, it is associated at an interactive software. Therefore, its objective is not only to provide education test but also to improve the autonomous learning and at the same time, to make it more attractive

DESIGN OF MULTIBAND UWB FILTER BASED ON REFLECTED CHARACTERISTICS IN TIME DOMAIN

Abstract-An automatic process to design a multiband filter in Nonuniform Transmission Line (NTL) form is presented. The proposed approach supports with Time Domain Reflectometry (TDR) technique instead of the traditional methods such as methods based on InductorCapacitor filters. The proposed method is described step-by-step and is illustrated by an example emphasizing key points. A critical analysis of this technique is done for emphasizing its limitations. For illustrating the design process, a multiband Ultra Wideband (UWB) filter rejecting two frequency bands is designed

Parametric modeling of diverse antennas designed for IR and MB-OFDM UWB systems

International audienceThis paper presents and compares the parametric modeling of several types of antennas designed for IR (Impulse Radio) and MB-OFDM (Multi-Band Orthogonal Frequency Division Multiplexing) UWB systems. Parametric models, based on the singularity expansion method, are computed in order to model the transfer functions and the impulse responses of antennas. Thus, the complexity and the accuracy of time/frequency models of diverse UWB antennas are analyzed

"Optimization Of PIFA Antenna Using An Auto-embedded Genetic Algorithm"

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UWB antennas: design and modeling

International audienceThis paper presents an insight into UWB antenna. Aspects regarding design, characterization and modeling of UWB antenna are discussed

Design and characteristics of a small U-slotted planar antenna for IR-UWB

International audienceThis paper introduces the design of a small (30mm x 35mm x 1.6mm) band-rejected U-slotted planar antenna on FR4 substrate having a relative permittivity of r=4.4 for Impulse Radio Ultra Wide Band (IR-UWB) systems. The antenna is fed by a microstrip line and rejects the frequency band from 5.15GHz to 5.825GHz used by IEEE 802.11a and HIPERLAN/2. This antenna shows good characteristics for IR-UWB. The effects of variation on steps and U-Slot are discussed. The antenna is characterized both in the time and frequency domains by use of simulation and measurement