125kHz RFID Reader Design
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...
View ArticleUsing Bluetooth In A Design
Bluetooth devices have to be tested, both from the radio certification side and the Bluetooth software stack certification side. Even with a straightforward design it’s expensive – very expensive!...
View ArticleFM Radio Modules
The Unlicensed Bands 433MHz 868MHz 915MHz Antenna Wire antenna A very good antenna to use for maximum range. Use a length of wire (or a PCB track) 1/4 wave length (e.g. 172mm for 433MHz). The...
View ArticleRFID Tag Types
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...
View ArticleRFID Reader Antennas
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,...
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