rfid antenna design - utd jonsson school - home

Kory Ballew, Matthew Koeth, Edward Parchuke, Richard Pierce, Laura Wright

Department of Electrical EngineeringErik Jonsson School of Engineering & Computer ScienceUniversity of Texas at DallasRichardson, Texas 75083-0688, U.S.A.

khb042000@utdallas.edu, mjk035000@utdallas.edu, efp051000@utdallas.edu, rgp032000@utdallas.edu, law012200@utdallas.edu

Goals: Engineering Approach:

Project Overview: Project Conclusions:

Design a RFID tag antenna for use in supply chain management.

Warehouse and distribution centers present a demanding environment for RFID implementation. The presence of EMI and EMF noise, along with different materials, and large equipment create unique challenges. Antenna performance of the RFID tag may increase overall system performance.

Antenna Design will be approximately UPC Size (4cm x 4cm) and meet EPCGlobal Specifications to ensure adoption by the RFID community and end users.

Analyze Current TechnologiesFrequency Range: 860-930MHzEPCGlobal Standards

UHF Class 1 Gen 2 V. 1.0.9 Standard Conformance RequirementsInteroperability Test Methodology v1.2.4 for UHF Gen 2 RFID Devices

Analyze Antenna Design Angles90 degree60 degree

Simulation AWR Sonnet

DesignUse CAD tools for Initial DesignFinal Design is a planned Deliverable for April, 2008

Social/Ethical ImplicationsCompliance with FCC Title 47, Part 15.247ensures that the radiated power does not present any social or ethical problems

Project ConstraintsCost

Materials available through the UniversityDesign Software is available through the University

Resources and PersonnelAntenna Parameters

1/8 wavelength monopole arrayRange: 860 to 930 MHzCenter Frequency: 900 MHzEPCGlobal Standards as described in the Project Overview Antenna is approximately UPC Sized (6cm x 6cm)

Simulation CharacteristicsFar-field radiation patternsCurrent distributionInput impedance

Antenna will be a double monopole The double monopole pattern shown below works for our program, because of its near omni-directional patterning, gain, and reflection coefficient.

Antenna Parameter ResultsGain: -5dBiS11 Parameters: -13dBAngular Separation of monopoles: 90 degrees