ance and reasonable price, matching its reading distance range and practical application distance range, so it is widely used in bus card and mobile phone payment.
TheRFID anti-metl electronic tagis used under the 13.56MHz, which usually has a maximum read and write distance of abou 10 cm, and the chips current consumption is abou 1 ma. Because as the frequency increases, the inductance of the required electronic tag coil shows a decrease in the number of coil turns, usually where the typical nu