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    • 13. 发明公开
    • ELECTRONIC DEVICE
    • 电子设备
    • EP1177622A1
    • 2002-02-06
    • EP01915158.8
    • 2001-01-24
    • Koninklijke Philips Electronics N.V.
    • PULSFORD, Nicolas, J.VAN BEEK, Jozef, T., M.
    • H03H7/01H03H3/00
    • H03H3/00H03H7/0115
    • The electronic device (10) of the invention has a first inductor (12) and a first capacitor (11). The capacitor (11) comprises a first capacitor electrode (21) in a first electrically conducting layer (3), a dielectric (26), and a second capacitor electrode (25) in a second electrically conducting layer (7). The second conductive layer (7) also comprises the first inductor (12) and a via (13). In order to get a resonance frequency with a low tolerance, which can be used at high frequencies in RF equipment, the second capacitor electrode (25) has a contour whose projection onto the first conductive layer (3) lies within the first capacitor electrode (21). In this way the decrease in capacitance of the first capacitor (11) due to etching can be leveled out against the increase in inductance of the first inductor (12) due to the same etching. Preferably, the dielectric (26) has a middle zone (24) and edge zones (22, 23). The dielectric consists of a layer of dielectric material (5) in the middle zone (24). In the edge zones (22, 23), the dielectric consists of the layer of dielectric material (5) and a layer of electrically insulating material (4).