Transponder and Method for Wireless Data Transmission

• US 20110177781A1
• Filed: 03/01/2011
• Published: 07/21/2011
• Est. Priority Date: 02/10/2006
• Status: Active Grant

• Current Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Original Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Inventors: Schneider, Peter, Berhorst, Martin, Kurz, Alexander
• Granted Patent: US 8,847,737 B2
• Time in Patent Office: Days
• US Class Current: 455/41.1
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs

Abstract

A transponder and a method for wireless data transmission is provided. The transponder comprises an input circuit with input terminals for connecting an antenna coil for data transmission to a base station by means of inductive coupling, a first controllable switching means, at least one resistor, which is looped in series with the first controllable switching means between the input terminals of the input circuit, and a controller which is designed in such a way that it connects through the first switching means as soon as a voltage applied at the input terminals falls below a first settable threshold value, and again interrupts it as soon as the voltage applied at the input terminals for a settable duration is above the first settable threshold value and/or above a second settable threshold value.

Claims

1. A circuit comprising:

a circuit element facilitating a substantially high transmission range between a base station and a transponder and facilitating a substantially quality-independent timing of signals generated by the base station.