Home Internet of Things Aerospace Apparel Energy Defense Health Care Logistics Manufacturing Retail

RFID Frequently Asked Question

How does an RFID system work?

An RFID system consists of a reader (sometimes called an interrogator) and a transponder (or tag), which usually has a microchip with an antenna attached to it. There are different types of RFID systems, but usually the reader sends out electromagnetic waves with a signal the tag is designed to respond to. Passive tags have no power source. They draw power from the field created by the reader and use it to power the microchip's circuits. The chip then modulates the waves that the tag sends back to the reader, which converts the new waves into digital data. Active tags have a power source and broadcast their signal. Real time location systems don’t respond to signals from the reader, but rather broadcast at set intervals. Readers pick up those signals and software is used to calculate the tag’s location. For more information on the components of a complete system used in businesses, see Getting Started.

Back

Related Questions

 

Have a question not answered in our FAQ? Send it to .

PREMIUM CONTENT
Case Studies Features Best Practices How-Tos
RFID JOURNAL EVENTS
Live Events Virtual Events Webinars
ASK THE EXPERTS
Simply enter a question for our experts.
TAKE THE POLL
JOIN THE CONVERSATION ON TWITTER
Loading
RFID Journal LIVE! RFID in Health Care LIVE! LatAm LIVE! Brasil LIVE! Europe RFID Connect Virtual Events RFID Journal Awards Webinars Presentations