Communication terminal

A terminal designed for communication with contactless-type data carriers with two different carrier frequencies has two resonant circuits (I, II) for one and the other carrier frequency. Both resonant circuits (I, II) work with one and the same antenna (A) and one capacitor (C1, C3) in each case. I...

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Bibliographische Detailangaben
1. Verfasser:	GRABNER WOLFGANG
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS RESONATORS TRANSMISSION
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Beschreibung
Zusammenfassung:	A terminal designed for communication with contactless-type data carriers with two different carrier frequencies has two resonant circuits (I, II) for one and the other carrier frequency. Both resonant circuits (I, II) work with one and the same antenna (A) and one capacitor (C1, C3) in each case. In the resonant circuit (II) for low carrier frequency a coupling inductance coil (L) is provided between the capacitor (C3) and the antenna (A).