| 摘要 |
The variable capacitance ( 1 ) according to the invention is based on a novel principle: a dielectric fluid ( 20 ) is placed in the air gap constituted by two capacitor electrodes ( 12, 14 ), the fluid being able to be displaced in a direction and outside the cavity ( 10 ) formed between said two electrodes ( 12, 14 ). Advantageously, the dielectric fluid ( 20 ) is displaced according to the principle of communicating vessels, with the presence of a second cavity ( 30 ) in fluidic relation with the first cavity. Actuation electrodes ( 46, 48 ) in the second cavity ( 30 ) induce the deflection of a membrane ( 44 ) in order to modify the relative heights of fluidic liquid in the two cavities ( 10, 30 ).
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