RFID Antennas with ferrite Rod

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SUMMARY

The discussion focuses on the use of ferrite rod antennas in RFID systems, specifically questioning their applicability in high-frequency systems operating at 13.56 MHz. It is established that for inductively coupled RFID systems, the maximum range is approximately 1.4 times the diameter of the sender antenna when using loop antennas. The use of ferrite rods in low-frequency systems (125, 134 kHz) enhances directionality and range, but there is a lack of examples or evidence for their effectiveness in high-frequency applications. The inquiry seeks to determine the technical feasibility of employing ferrite rod antennas at 13.56 MHz.

PREREQUISITES
  • Understanding of RFID technology and its frequency ranges
  • Knowledge of inductively coupled RFID systems
  • Familiarity with antenna design principles, specifically loop antennas
  • Basic concepts of ferrite materials and their applications in electronics
NEXT STEPS
  • Research the design and performance characteristics of ferrite rod antennas
  • Investigate the operational principles of RFID systems at 13.56 MHz
  • Explore case studies or examples of high-frequency RFID antenna implementations
  • Learn about the effects of antenna directionality on RFID range and performance
USEFUL FOR

Engineers, RFID system designers, and electronics enthusiasts interested in optimizing RFID antenna performance and exploring advanced antenna technologies.

temujin
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Hi,

I have a question relating to RFID antennas...

For inductively coupled RFID systems, the max. range is about 1.4 times the diameter of the sender antenna (for a loop antenna).

In low frequency systems (125, 134 kHz) the antenna coil is often wounded around a ferrite rod, making the antennas more directional, and improving range in the main lobe direction.

I have not seen any examples of this kind of antennas in high frequency systems (13.56 MHz).

Does anyone know if it is technically possible with ferrite rod antennas in 13.56 MHz systems?

best regards,
t.
 
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