| 摘要 |
To provide a circuit arrangement for filtering and/or selecting single frequencies or frequency ranges, particularly of signals intended for at least an integrated circuit and/or signals generated by at least an integrated circuit, said circuit arrangement (100) comprising at least two electric resonant circuits (10; 20; 30) with at least an inductive element (12; 22; 32) and at least a capacitive element (14; 24; 34), which, at a given low power supply voltage, provides a dynamic range complying with the current requirements, on the one hand, and has a maximal quality factor (Q), on the other hand, and can be realized in an inherently symmetrical arrangement and combined with a differential or balanced circuit technique to be preferred in integrated techniques, it is proposed that the resonant circuits (10; 20; 30), particularly the inductive elements (12; 22; 32) are magnetically fixedly coupled to each other, and in that at least a part, preferably all resonant circuits (10; 20; 30) of the circuit arrangement (100) are arranged at or on the integrated circuit, particularly on only one metallization plate (40) of the integrated circuit, having an essentially constant ohmic resistance.
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