Variable capacitance device, antenna module, and communication apparatus
First Claim
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1. A variable capacitance device comprising:
- a fixing member;
a fixed electrode having a first end side fixed by the fixing member;
an actuator element having a first end side fixed by the fixing member directly or indirectly, wherein the actuator element is a polymer actuator element including a pair of electrode films and a polymer film inserted between the pair of electrode films;
a movable electrode provided to connect to the actuator element directly or indirectly, and disposed to approximately face the fixed electrode; and
a driving section deforming a second end side of the actuator element, to change a distance between the fixed electrode and the movable electrode.
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Abstract
A variable capacitance device includes a fixing member, a fixed electrode having a first end side fixed by the fixing member, an actuator element having a first end side fixed by the fixing member directly or indirectly, a movable electrode provided to connect to the actuator element directly or indirectly and disposed to approximately face the fixed electrode, and a driving section deforming a second end side of the actuator element, to change a distance between the fixed electrode and the movable electrode.
10 Citations
14 Claims
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1. A variable capacitance device comprising:
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a fixing member; a fixed electrode having a first end side fixed by the fixing member; an actuator element having a first end side fixed by the fixing member directly or indirectly, wherein the actuator element is a polymer actuator element including a pair of electrode films and a polymer film inserted between the pair of electrode films; a movable electrode provided to connect to the actuator element directly or indirectly, and disposed to approximately face the fixed electrode; and a driving section deforming a second end side of the actuator element, to change a distance between the fixed electrode and the movable electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An antenna module comprising:
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an antenna element; and a variable capacitance device, wherein the variable capacitance device includes a fixing member, a fixed electrode having a first end side fixed by the fixing member, an actuator element having a first end side fixed by the fixing member directly or indirectly, wherein the actuator element is a polymer actuator element including a pair of electrode films and a polymer film inserted between the pair of electrode films, a movable electrode provided to connect to the actuator element directly or indirectly, and disposed to approximately face the fixed electrode, and a driving section deforming a second end side of the actuator element, to change a distance between the fixed electrode and the movable electrode.
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14. A communication apparatus comprising:
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an antenna module including an antenna element and a variable capacitance device, wherein the variable capacitance device includes a fixing member, a fixed electrode having a first end side fixed by the fixing member, an actuator element having a first end side fixed by the fixing member directly or indirectly, wherein the actuator element is a polymer actuator element including a pair of electrode films and a polymer film inserted between the pair of electrode films, a movable electrode provided to connect to the actuator element directly or indirectly, and disposed to approximately face the fixed electrode, and a driving section deforming a second end side of the actuator element, to change a distance between the fixed electrode and the movable electrode.
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Specification