VARIABLE CAPACITANCE ELEMENT, AND BOOSTER ANTENNA AND READER/WRITER PROVIDED THEREWITH

PROBLEM TO BE SOLVED: To provide a variable capacitance element, and booster antenna and reader/writer provided therewith capable of restraining data leakage of the IC card and other contactless media and improving the security, in a fuss-free and by a convenient method. SOLUTION: The variable capac...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	OSHIMA YASUO, SHIGETA SUSUMU
Format:	Patent
Sprache:	eng
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS CALCULATING CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE COMPUTING COUNTING ELECTRICITY HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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