发明名称 CIRCUIT ARRANGEMENT FOR A TRANSPONDER AND METHOD FOR OPERATING THE CIRCUIT ARRANGEMENT
摘要 A circuit arrangement for a transponder comprises a control circuit and an input circuit, wherein the input circuit comprises a first resonator, which comprises a first coil and a first capacitor, and a second resonator, which comprises a second coil and a second capacitor. The first capacitor and the second capacitor are designed as a first varactor and as a second varactor, respectively. Furthermore, the first resonator and the second resonator are designed in such a way that they can be used to provide a first output voltage and a second output voltage, respectively. Moreover, the control circuit is designed in such a way that it can be used to control at least one of the varactors so that a resonant frequency of the corresponding resonator can essentially be set to a predefined transmission frequency such that the output voltage of the corresponding resonator of the input circuit can be increased.
申请公布号 KR20080074219(A) 申请公布日期 2008.08.12
申请号 KR20087016441 申请日期 2008.07.07
申请人 NXP B.V. 发明人 RIEMSCHNEIDER KARL RAGMAR;ROEHM HORST;TOBERGTE WOLFGANG
分类号 G06K19/077;G06K19/07;H01Q1/24 主分类号 G06K19/077
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