| 摘要 |
A method of trimming an electronic circuit whose components (Ld,Ls1,Ls2) are arranged on the surface (1) of a circuit board (2). The components (Ld,Ls1,Ls2) are surrounded by a conductive, especially metal, housing (3) for screening from electromagnetic radiation on the surface (1) of the circuit board (2). The circuit has passive components, especially inductances (L0) and/or capacitances (KD,Cs,Co) and/or resistances. At least one passive component (L0) can be tuned so that at least one parameter of the circuit, in particular an oscillation frequency, is adjusted. The tuneable passive components (L0) are connected by means of one or more metallisations (L-DK1,L-DK2,L-DK3) plated through the circuit board (2), to the bottom face of the circuit board (2), in which the metallisations on the bottom face (4) are connected to a reference potential (GND) and by interrupting the metallisation(s) (L-DK1,L-DK2,L-DK3) on the bottom face (4). The parameter(s) of the circuit can be adjusted.
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