Metal compensated radio frequency identification reader

摘要: The present invention features an improved radio frequency identification (RFID) reader which operates with a low power consumption and may tolerate wide fluctuation in input voltages. RFID is housed so that the influence of its physical surroundings, especially metallic objects, on system performance minimized. A pre-compensation metal plate used to stabilize self-resonant reader, even presence large masses. be formed from aluminum or another non-ferrous material or, for long-range readers, ferrite similar, high magnetically permeable material. In addition, sensitivity effective operating distance maximized. Also, dynamically controlled discrete steps 10 Hz less effects component parameter drift, temperature change, other external factors are also automatically adapts itself requirements access control it attached.