ANTENNA DEVICE

PROBLEM TO BE SOLVED: To widen a communicatable range between an IC card and a reader/writer. SOLUTION: This antenna device 60 for a reader/writer 50 for writing/reading data for a non-contact IC card 1 is provided with a loop coil 61 configured to radiate an electronic field, and magnetically conne...

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Bibliographische Detailangaben
Hauptverfasser:	OKAZAKI YUTAKA, GOTO KAZUO, AKIYASU HIROSHI, KIKUCHI AKIHIRO, URAYAMA KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS BOOK COVERS BOOKBINDING CALCULATING COMPUTING COUNTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FILES HANDLING RECORD CARRIERS LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS PRESENTATION OF DATA PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR RECOGNITION OF DATA RECORD CARRIERS SPECIAL PRINTED MATTER TRANSMISSION TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To widen a communicatable range between an IC card and a reader/writer. SOLUTION: This antenna device 60 for a reader/writer 50 for writing/reading data for a non-contact IC card 1 is provided with a loop coil 61 configured to radiate an electronic field, and magnetically connected to a loop coil 4 at the IC card 1 side for transmitting/receiving data. The loop coil 61 is asymmetrically shaped by making different intervals between coils faced to each other with the central part interposed. COPYRIGHT: (C)2004,JPO