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FastChecker Evaluates UHF Tag Performance
Developed in Brazil, the solution is designed to help professionals create high-quality RFID projects.
Feb 20, 2019—
Following years of research and analysis, Brazilian engineer Michel Normanha Bardauil has developed a solution called FastChecker, designed to evaluate the performance of UHF RFID tags, which collects information difficult or impossible to obtain solely with conventional readers. FastChecker was developed in Campinas, Brazil, as a project for MB Engenharia, a company responsible for the FastTag product line.
"The device is used to compare tag performance in a complete way," Bardauil says, "as well as to carry out the detailed evaluation of each one, showing the results according to each frequency within the ETSI and FCC band for UHF RFID."
According to Bardauil, having a good signal strength to power the tags is of the utmost importance to ensuring the robustness of RFID solutions. "When an RFID system is in operation, the signal strength will drop as soon as it leaves the reader, until it reaches the tag," he states. "After the signal is processed by the tag, its intensity also goes down until it returns to the reader. The intensity of the signal that returns, when compared to the sensitivity of the reader receiver circuit, determines the margin that the system has to operate efficiently. "
This margin also depends on how sensitive the tag is. "If the power of the reader can be decreased and the tag responds, it means that with more power, we will have a higher return signal, or even more margin," Bardauil says. "With FastChecker, you can determine the minimum transmitted power to complete the tag interrogation cycle for each frequency, thereby determining its sensitivity." According to Bardauil, FastChecker can be used, for example, to determine the best tag and its optimal position on hospital equipment, since the choice of location influences its performance a great day.
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