125 kHz Vs 13.56 MHz

Why migrate from 125 kHz to 13.56 MHz for Identity systems?

The present generation identity systems are migrating from 125 kHz towards 13.56 MHz. Why is there this technology shifts towards higher frequency? Even the new contactless payment systems are using the 13.56 MHz and not the age old and tested 125 kHz frequency band ... Besides being universally open and available for scientific use there are some technical reasons, which has been gathered below. The 13.56 MHz is better suited for the following reasons.

13.56 MHz Advantages Over 125 kHz


13.56 MHz is available for higher data rate and higher available bandwidth as compared to 125 kHz

Smaller component values which are easier to integrate and manufacture. As the frequency goes high the values of capacitance and inductance required to generate the resonant frequency goes low, thus making it easier to manufacture.

Higher tolerance to electrical noise which is noticed to be stronger in the MHz range especially in industrial environments. The higher frequency means more energy can be transferred with less and therefore, the immunity to the stray and system noises increase.

Higher tolerance to electrical noise which is noticed to be stronger in the MHz range especially in industrial environments. The higher frequency means more energy can be transferred with less and therefore, the immunity to the stray and system noises increase.

13.56 MHz Disadvantages Over 125 kHz

13.56 MHz is limited to short range inductive coupling systems, some of the higher frequency systems like the microwave RFID systems have better coupling but are harder to build.