RFID Implementation
Many decisions must be made when setting up an RFID system. Even after major factors like frequency of operation, reader type, and tag type have been determined, there are still a number of issues that can seriously impact a project’s success. These issues deserve consideration both during installation and operation, and include reader antenna location, orientation, and connections, multipath reflection, electromagnetic interference, reader collision, and packaging considerations.
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Course Details
Learning Objectives
• Describe some of the operational factors that affect the read range of RFID systems • Describe the effect of antenna orientation on read range • List guidelines for reader-to-antenna connections • Explain what multipath reflection is • List sources of EMI • Describe what reader synchronization is • Describe how packaging can affect read range
Specs
Frequently Asked Questions
When selecting an RFID tag reader, isn’t it always best to select one with the greatest possible read range?
How does antenna orientation affect read range?
What is “multipath reflection”?
What is “reader collision”?
What can be done about “reader collision”?
Sample Video Transcript
Reader antenna orientation has an effect on the read range. Read range is maximized when the reader antenna and the tag antenna are parallel to one another. As the orientation changes from parallel to perpendicular, the strength of the signal returned from the tag is greatly reduced. When the orientation of the tagged products cannot be controlled or changed, the angle of the reader antenna can be changed. Other possible solutions are to use an antenna that is less sensitive to orientation, or use multiple antennas mounted at different angles relative to the read area. Merging multiple scans from antennas at different angles increases the chance of identifying all of the tags present.
