A Word Of Caution… RFID Antenna designs can require optimsation for the particular RFID tags you are using, especially if you are using a small antenna coil.  When evaluating a RFID solution, especially a components based solution, don't just assume it will all work. Test using the tags you plan to actually use, test the maximum and minimum read range […]

Low Frequency vs High Frequency Low frequency readers are often cheaper (although not always due to the mass production of high frequency). Low frequency writable tags typically have smaller memory and the data transfer between read and tag is slower due to the lower frequency. High frequency tags can often have a shorter range than low […]

RFID Circuit & PCB Design Notes It’s usually very important that the voltage supply to an RFID reader is protected from ripple and interference. Where you have noisy electronics in the proximity: A simple RC filter of 10R and 1000uF will go a long way to preventing interference. Better still is using a separate power […]