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US 2003/0227348 A1Published application
High temperature superconductor tunable filter
AssigneeSuperconductor Technologies, Inc.
InventorRichard C. Eden
Life of this patent
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Abstract
A circuit is provided wherein the electronic properties of the circuit are varied by a magnetic actuator. The circuit includes a fixed substrate and a movable substrate. The magnetic actuator comprises a magnetic driver on an upper surface of the fixed substrate that is substantially overlapped by an HTS reaction plate on the lower surface of the fixed substrate. A tuning current applied through a continuous strip of HTS material in the magnetic driver induces a repulsive magnetic force causing the movable substrate to move with respect to the fixed substrate.
Claims21
A variable split-plate capacitor, comprising:
- a fixed substrate having an upper surface;
- a movable substrate having a lower surface opposing the upper surface of the fixed substrate;
- a first magnetic actuator disposed on the fixed substrate, the first magnetic actuator comprising a first magnetic driver;
- a first reaction plate disposed on the lower surface of the movable substrate, the first reaction plate substantially overlapping the first magnetic driver whereby a current flowing through the first magnetic driver produces a repulsive force between the first magnetic driver and the first reaction plate;
- a second magnetic actuator disposed on the fixed substrate, the second magnetic actuator comprising a second magnetic driver;
- a second reaction plate disposed on the lower surface of the movable substrate, the second reaction plate substantially overlapping the second magnetic driver whereby a current flowing through the second magnetic driver produces a repulsive force between the second magnetic driver and the second reaction plate;
- a first capacitor plate disposed on the upper surface of the fixed substrate;
- a second capacitor plate disposed on the upper surface of the fixed substrate;
- and
- a floating capacitor plate on the lower surface of the movable substrate, the floating capacitor plate substantially overlapping the first and second capacitor plates.
7 more elements
A device comprising:
- a fixed substrate having opposing surfaces separated by a gap;
- a moveable substrate disposed in the gap between the opposing surfaces of the fixed substrate;
- a first magnetic actuator disposed on the fixed substrate, the first magnetic actuator comprising a first magnetic driver;
- a second magnetic actuator disposed on the fixed substrate, the second magnetic actuator comprising a second magnetic driver;
- and
- at least one reaction plate disposed on a surface of the moveable substrate.
3 more elements
A device comprising:
- a fixed substrate having an upper surface;
- a pair of suspension posts disposed on the upper surface of the fixed substrate;
- a moveable substrate having a lower surface opposing the upper surface of the fixed substrate, moveable substrate being suspended above the upper surface of the fixed substrate via a torsion fiber extending between the pair of suspension posts, the torsion fiber being positioned on the centerline of the moveable substrate;
- a first magnetic driver disposed on the fixed substrate and offset from the centerline of the moveable substrate;
- a second magnetic driver disposed on the fixed substrate and offset from the centerline of the moveable substrate in an opposite direction from the first magnetic driver;
- a first reaction plate disposed on the lower surface of the movable substrate, the first reaction plate substantially overlapping the first magnetic driver;
- and
- a second reaction plate disposed on the lower surface of the movable substrate, the second reaction plate substantially overlapping the second magnetic driver.
5 more elements
A device comprising:
- a fixed substrate having an upper surface;
- a moveable substrate having a lower surface opposing the upper surface of the fixed substrate;
- a reaction plate disposed on the lower surface of the moveable substrate;
- a magnetic driver disposed in the fixed substrate;
- a HTS resonator disposed on the fixed substrate;
- and
- a HTS inductance suppression plate disposed on the moveable substrate above the HTS resonator.
4 more elements
Dependencies are inferred from the claim text.