Title :
A 2.45 GHz wireless IC card system for automatic gates
Author :
Konno, K.-i. ; Wada, H. ; Matsukawa, K.
Author_Institution :
Antenna Giken Co. Ltd., Ohmiya, Japan
Abstract :
A 2.45-GHz wireless IC card system has been developed for a noncontact-type train station automatic gate system. This system consists of compact transmitter-receiver equipment and noncontact wireless IC cards. The newly developed technology used in this system comprises a small dual-port slot antenna for the card, a modulation-demodulation scheme for stable data transmission, and a cochannel carrier allocation system for operation with multiple gates. Operation of this wireless card system has been successfully demonstrated.<>
Keywords :
modems; railways; smart cards; transceivers; waveguide antennas; 2.45 GHz; automatic gates; cochannel carrier allocation system; compact transmitter-receiver equipment; data transmission; dual-port slot antenna; modulation-demodulation scheme; noncontact-type train station; wireless IC card system; Costs; Data communication; Directive antennas; Magnetic devices; Patch antennas; Polarization; Slot antennas; Transceivers; Transmitters; Transmitting antennas;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276754
