DOI: 10.13189/ujeee.2015.030101 Low Frequency Reader and Antenna Design Using RFID

rapidly therefore it is necessary to adopt those methods in designing a system that are simpler and effective. The main concern is to design RFID system to secure entry points in an office environment. In this paper the work mainly specifies the design of RFID reader and antenna. The noncontact device of RFID system is more convenient approach instead of conventional bar code. Every RFID card (passive) is allocated with a different binary number for identification. The modulation technique used here is Frequency shift keying. The detectable operating frequency of RFID reader is 123.2khz for bit '1 ' and 134.2khz for bit '0'. To achieve the required frequency TMS 3705 IC has been used and it’s interfacing with an antenna of 0.18mm enamelled copper wire with 102 turns. The other part of the interface in the IC is binary bits verification with microcontroller. The microcontroller is further controlling the relay operation and also serially maintaining the record of employee’s arrival through Microsoft visual studio. Presently the application in which its significance is observed and implemented is calculating payroll, storage unit of defence artillery