Claire Kao, Kenneth Marcinkowska, Dante Alejandro Narvaez,

1

RFID Item Locator
Claire Kao, Kenneth Marcinkowska, Dante Alejandro
Narvaez, James Robarge III, Phan Tran
claire.kao_at_student.utdallas.edu,
kam022100_at_utdallas.edu, alejandro.narvaez_at_student.
utdallas.edu, jer046000_at_utdallas.edu,
tennis_at_utdallas.edu
Department of Electrical Engineering Erik Jonsson
School of Engineering Computer
Science University of Texas at Dallas Richardson,
Texas 75083-0688, U.S.A.
Project Results
Project Goals

• Range testing included indoor, outdoor, and
  under
• furniture settings.
• The effective range of our product is determined
  by
• our ability to hear the buzzer from wherever
  the tag
• is located.
• Pending memory constraints on our
  microprocessor,
• our design allows us to have up to 128 tags.
• 3-inch Monopole Antenna
• On the average for our testing, we found that
  there
• was a received power of -90 dBm.
• We are transmitting at 4 dBm.
• The average current drain on our tag is 6.78 mA.
• 916 MHz Ceramic Chip Antenna
• Through the received signal strength of our
  receiver,
• we were able to determine that this antenna
  has

• Item locator utilizing RFID tag and reader
• 15 meter receiving range
• Able to drive a DC activated buzzer
• Multiple tag capability
• Keypad user interface

Project Overview

• Reader for transmission
• Tag with speaker

Project Conclusions

• Our tag produces the desired results of beeping
• when sent the right code.
• We selected components that led to a simple
• design and reduced production costs .
• Include a LCD for better user interface on the
  reader
• Implement a wake up circuitry to conserve power
  to
• extend the life of the tag

Future Developments