本发明涉及可变电容电电容器包括第一电极和面对所述第一电极和所述之间布置的第一电介质材料的区与在没有所述第二电极形成的至少为特征的第二电极的第二电极，在一只手 主电极由导电材料制成，并且，至少在其他中，附加电极，其包括状态变化材料中，主电极和面对所述第一电极的额外电极的，所述状态变化材料被布置为至少部分 在与主电极，并且被配置接触到可替换地采用一高电阻率状态worin所述附加电极电从主电极和一个低电阻率状态绝缘worin附加电极是在导电与主电极，以便改变所述 所述第二电极的电活性表面面积。

The invention relates to an electric variable capacitor comprising a first electrode (2) and a second electrode (5) facing the first electrode and an area of ​​a dielectric material (10) disposed between said first and second electrodes (5 ) characterized in that the second electrode (5) is formed in part of a primary electrode (6) of electrically conductive material and, for another part, an additional electrode (7) comprising a change material state (8), the primary electrode (6) and the additional electrode (7) facing the first electrode, said state change material (8) being disposed at least partially in contact with the electrode primary (6) and configured to alternately take a highly resistive state in which the additional electrode (7) is electrically insulated from the primary electrode (6) and a low-resistance state in which the additional electrode (7) is in conduction electrical with the primary electrode (6) so as to vary the electrically active surface of the second electrode (5).