ACES Publication Search
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| Title: | ACES June 2010 Full Journal |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 19628 KB |
| Title: | ACES June 2010 Front/Back Matter |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 293 KB |
| Title: | Platform Tolerant and Conformal RFID Tag Antenna: Design, Construction and Measurements |
| Abstract: | This paper presents the design of a novel platform tolerant and conformal RFID (Radio Frequency Identification) tag antenna, which operates at the 902–928 MHz UHF band. The antenna has a simple, low-profile (1.8 mm thick) structure. It consists of two microstrip patches, which are separated by a narrow gap and driven by a microchip in the gap. The tag is designed to complex conjugate match an Alien- Higgs2 microchip. The performance of the tag is investigated on different surfaces (free space, human and metal) through simulations using parameters like power reflection coefficient, input impedance and radiation patterns. The effects of bending are investigated on the tag design. Experimental read-range, radiation pattern and impedance measurements are performed for the tag. High Frequency Structure Simulator (HFSS) simulation validation has been achieved due to excellent agreement with measurements for this particular application. The experimental measurements show that the maximum boresight average read range of the designed RFID tag on different platforms is about 3.5m (4 W EIRP). |
| Author(s): | H. Rajagopalan, Y. Rahmat-Samii |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 2626 KB |
| Title: | A Reliable Approach for Evaluating the Platform Tolerance of RFID Tag Antennas |
| Abstract: | This paper describes a novel approach for evaluating the performance of an RFID tag on the basis of the simulation of its input impedance. A systematic and reliable approach to compute the impedance is presented and the platform tolerance characteristics of two tags are investigated on the basis of the variations of their input impedances. |
| Author(s): | L. Li, R. Mittra |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 556 KB |
| Title: | Importance of Computational Electromagnetic Modeling in the Development of RFID Tags for Paper Reel Identification |
| Abstract: | Development of the RFID tag for paper reel identification in industrial environment is discussed. Paper reel supply chain and history of the development of the presented antenna design is explained. Modeling of the paper reel tag is discussed and a case study of tag antenna ? paper reel co-design is presented. |
| Author(s): | L. Ukkonen, T. Björninen, L. Sydänheimo, A. Elsherbeni, F. Yang |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 971 KB |
| Title: | Space-Filling Curve Radio Frequency Identification Tags |
| Abstract: | Two different concepts for the use of resonant space-filling curves (SF-curves) elements as RFID tags are proposed. In the first concept the space-filling curve geometries such as Hilbert and Peano curves are studied with respect to the creation of an ultra-passive type of RFID in which an array of space-filling curve elements, scaled to resonate at different and particular frequencies, are used to provide a backscattered signal, in which information can be embedded. Using both numerical simulations and RCS measurement, it is shown that these electrically compact resonators could produce relatively large scattered fields over an inherently narrow frequency band at their corresponding fundamental resonant modes. The performances of these tags are also investigated when placed near a typical inventory objects, such as paper rolls. In the second concept, an SF-curve antenna is used above an SF-curve high impedance surface to develop an RFID tag that is well-suited for tagging of conducting objects. |
| Author(s): | J. A. McVay, A. Hoorfar, N. Engheta |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 2344 KB |
| Title: | Compact Metamaterial-Based UHF RFID Antennas: Deformed Omega and Split-Ring Resonator Structures |
| Abstract: | Over the past decade, researchers have shown significant advances in the area of radio frequency identification (RFID) and metamaterials. RFID is being applied to a wide spectrum of industries and metamaterial-based antennas are beginning to perform just as well as existing larger printed antennas. This paper presents two novel metamaterial-based antennas for passive ultra-high frequency (UHF) RFID tags. It is shown that by implementing omega-like elements and split-ring resonators into the design of an antenna for an UHF RFID tag, the overall size of the antenna can be significantly reduced to dimensions of less than 0.15?0, while preserving the performance of the antenna. |
| Author(s): | B. D. Braaten, R. P. Scheeler, M. Reich, R. M. Nelson, C. Bauer-Reich, J. Glower, G. J. Owen |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 1727 KB |
| Title: | UHF-HF RFID Integrated Transponder for Moving Vehicle Identification |
| Abstract: | This paper presents a passive HF-UHF RFID integrated transponder for the identification of a moving vehicle. It consists of a single ISO 7810 ID-1 Card where both a UHF meander dipole antenna and an ISO 15693 commercial tag are arranged. The UHF antenna is designed by using a parametric analysis of the optimal shape of the meanders to obtain a proper conjugate matching between the antenna and the RFID microchip. A single-lane identification scenario is presented and simulated. The effects of the electromagnetic reflection and diffraction on the reading range as well as on the identification operations of a tagged vehicle are also investigated. Numerical simulations and experimental results on a prototype of the conduced transponder confirm the possibility of using this technology for the identification of a moving vehicle approaching a road-toll system with a relatively slow speed. |
| Author(s): | A. Toccafondi, C. D. Giovampaola, P. Braconi, A. Cucini |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 11189 KB |
| Title: | Feasibility of Passive Wireless Sensors Based on Reflected Electro-Material Signatures |
| Abstract: | In this paper, a neural network is applied to reconstruct the permittivity profile of a threesection passive sensor for RFID applications. Input reflection coefficients of the wave backscattered from a RF tag, over the frequency range 1-5 GHz, are used to estimate the material parameters. A neural network incorporating the Levenberg Marquardt algorithm is evaluated in terms of average absolute error, regression analysis and computational efficiency. Suitability of the algorithm is verified using both simulated and measured data, and accurate results are obtained while avoiding computational complexity. The methodology developed in this paper can be successfully used for passive sensing applications involving RFID technology to investigate and reconstruct a material profile altered by environmental variables. |
| Author(s): | A. Hasan, A. F. Peterson, G. D. Durgin |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 237 KB |
| Title: | Survey of Laboratory Scale Fabrication Techniques for Passive UHF RFID Tags |
| Abstract: | This paper presents an overview of various RFID tag fabrication methods and briefly describes the advantages and disadvantages of each method. The purpose of this paper is to provide the reader with the fabrication techniques that can be applied for RFID fabrication purposes for laboratory scale experiments. This paper will present the performance results of laboratory made RFID tags based on two fabrication methods (etching and screen printing) on multiple substrates (paper, thin transparent film, polyethylene terephthalate (PET), and fabrics). These results will prove the effectiveness of the presented methods for RFID tag fabrication purposes. |
| Author(s): | T. Elsherbeni, K. ElMahgoub, L. Sydänheimo, L. Ukkonen, A. Elsherbeni, F. Yang |
| File Type: | Journal Paper |
| Issue: | Volume: 25 Number: 6 Year: 2010 |
| Download Link: | Click here to download PDF File Size: 1099 KB |