Design and reliability evaluation of passive HF RFID systems in metal environments

Range measurements of a High Frequency Radio Frequency Identification (HF RFID) system for registering feeding patterns of growing–finishing pigs

“…On each of the four boards, the tags were placed at different orientations relative to the antenna. The frame was made to hold the boards horizontally at seven heights: 15, 20, 25, 30, 35, 40 and 45 cm. Because the presence of metal and water in the close neighbourhood of an RFID antenna or tag has negative effects on the performance and range, the frame was made entirely out of dry wood and glue (Ciudad et al, 2010;D'hoe et al, 2011).…”

“…The range of a HF RFID system depends on numerous factors: the operating frequency, the type of tags used, the type of reader used, the size of tags and antenna, environmental influences, etc. (Finkenzeller, 2010;D'hoe et al, 2011). The theoretical range of an RFID system as measured by the manufacturer (often in optimal circumstances) can differ substantially from the achieved range in a real-life situation (Ciudad et al, 2010).…”