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7440254 Micro-electromechanical variable capacitor  
A micro-electromechanical variable capacitor with first and second capacitor plates spaced apart to define a gap therebetween. The first plate has two control electrodes and an active electrode....
7411774 Voltage variable capacitor  
A charge storage device having a capacitance that is variable by alteration of the relative permittivity of the dielectric positioned between conductive electrodes within the device. The device...
7400489 System and a method of driving a parallel-plate variable micro-electromechanical capacitor  
A method of driving a parallel-plate variable micro-electromechanical capacitor includes establishing a first charge differential across first and second conductive plates of a variable capacitor...
7400488 Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters  
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible...
7394641 MEMS tunable capacitor with a wide tuning range  
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in...
7388247 High precision microelectromechanical capacitor with programmable voltage source  
A high precision microelectromechanical capacitor with programmable voltage source includes a monolithic MEMS device having a capacitance actuator, a trim capacitor, and a high precision,...
7385800 Micro-electro-mechanical system (MEMS) capacitors, inductors, and related systems and methods  
According to one aspect, the subject matter described herein includes a MEMS fixed capacitor and a method for fabricating the MEMS fixed capacitor. The MEMS fixed capacitor can include a first...
7375948 Variable charge packet integrated circuit capacitor  
A variable IC capacitor includes a semiconductor layer doped to contain mobile charge carriers. Capacitor electrodes C 1 and C 2 are disposed adjacent to each other on the layer's surface, gate...
7369396 Composite electroactive material for electromechanical actuators  
A composite electroactive material having a plurality of particle cores, each particle core surrounded by a polymer covering having one or more strands of an electroactive polymer. In one...
7369394 Variable capacitor, circuit module, and communications apparatus  
A variable capacitor includes a supporting substrate and a plurality of variable capacitance elements, and bias lines. The plurality of variable capacitance elements is formed on the supporting...
7356310 Adaptive radio transceiver with floating MOSFET capacitors  
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
7346981 Method for fabricating microelectromechanical system (MEMS) devices  
A process for fabricating a MEMS device comprises the steps of depositing and patterning on one side of a wafer a layer of material having a preselected electrical resistivity; bonding a substrate...
7345866 Continuously tunable RF MEMS capacitor with ultra-wide tuning range  
A method is provided of continuously varying the capacitance of a MEMS varactor having a cantilever assembly mounted on a base portion, the cantilever assembly having a first capacitance plate and...
7324323 Photo-sensitive MEMS structure  
A heat-sensitive apparatus includes a substrate with a top surface, one or more bars being rotatably joined to the surface and having bimorph portions, and a plate rotatably joined to the surface...
7319581 Capacitive pressure sensor  
A capacitive pressure sensor includes: a conductive silicon substrate having a diaphragm; an insulating substrate having a fixed electrode, the insulating substrate overlapping the conductive...
7319580 Collapsing zipper varactor with inter-digit actuation electrodes for tunable filters  
According to one embodiment a microelectromechanical (MEMS) switch is disclosed. The MEMS switch includes a substrate, a plurality of actuation electrodes mounted on the substrate, a plurality of...
7310215 Direct digitally tunable microwave oscillators and filters  
A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control...
7283347 Low cost digital variable capacitor  
A digital variable capacitor package is provided as having a ground plane disposed on predetermined portion of the top surface of a substrate. An elongated signal electrode may also be disposed on...
7259417 Direct digitally tunable microwave oscillators and filters  
A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control...
7251121 Electronically variable capacitor array  
A capacitor array may include a bottom electrode, a plurality of top electrodes, at least one dielectric medium and a plurality of switching mechanisms. Each switching mechanism may separably...
7242569 Tunable capacitors using fluid dielectrics  
Capacitors 10, 20, 40, 50, 70, 80 ) having a fluid dielectric material that is transported or undergoes a phase change are disclosed. The dielectric medium change results in a change in the total...
7215529 Capacitive sensor having flexible polymeric conductors  
A capacitive sensor having a first and a second polymeric conductor are embedded within a non conducting body, wherein the body maintains a fixed separation distance between the first and the...
7203052 Method of fabricating MEMS tunable capacitor with wide tuning range  
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in...
7190565 Capacitor having reduced non-capacitive impedance  
An adjustable capacitor has a tubular housing including a first insulating section and a second section having a conductive portion at the exterior surface thereof forming an external terminal. An...
7161791 Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters  
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible...
7158363 Liquid metal varactor and method  
A varactor includes a container forming a liquid chamber, a first electrode mounted adjacent the chamber, and a second electrode mounted adjacent the chamber. The chamber may be sized and...
7092232 Variable capacitance capacitor, circuit module, and communications apparatus  
A variable capacitance capacitor has a plurality of variable capacitance elements, using a thin-film dielectric layer whose dielectric constant varies with voltage application, connected in series...
7088567 Tunable capacitors using fluid dielectrics  
Capacitors ( 10,20,40,50,70,80 ) having a fluid dielectric material that is transported or undergoes a phase change are disclosed. The dielectric medium change results in a change in the total...
7085122 MEMS tunable capacitor based on angular vertical comb drives  
A MEMS tunable capacitor with angular vertical comb-drive (AVC) actuators is described where high capacitances and a wide continuous tuning range is achieved in a compact space. The comb fingers...
7085121 Variable capacitance membrane actuator for wide band tuning of microstrip resonators and filters  
A device for varying the capacitance of an electronic circuit is disclosed. The device comprises a flexible membrane located above the electronic circuit, a metal layer connected to the flexible...
7082024 Component comprising a variable capacitor  
A variable capacitor having a groove portion formed in an insulating substrate, two upper portions of the substrate located on either side of the groove portion forming two lateral edges, a...
7079372 Film as a dielectric in capacitors and process for its production  
A dielectric capacitor having self healing properties is disclosed. The capacitor includes a film made of an amorphous aromatic copolycarbonate having a weight average molecular weight of at least...
7078787 Design and operation of gate-enhanced junction varactor with gradual capacitance variation  
A semiconductor junction varactor is designed with gate enhancement for enabling the varactor to achieve a high ratio of maximum capacitance to minimum capacitance. The varactor has a gate region (...
7054132 Variable capacitance element  
A variable capacitance element includes a movable element provided above a substrate using supporting portions and support beams so as to be displaced from the substrate. An insulating film and a...
7046497 Multi-layer capacitive transducer  
A capacitive transducer of multi-layer construction includes two rotor plates supported by flexible springs, the plates being spaced apart and rigidly connected by a stem. One rotor plate my be...
7042699 Vacuum variable capacitor  
A vacuum variable capacitor is includes of a vacuum container which is formed by sealing both end of a cylindrical insulator with a fixed-side end plate and a movable-side end plate, a movable...
7042698 MEMS tunable capacitor with a wide tuning range and method of fabricating the same  
A MEMS tunable capacitor and method of fabricating the same, includes a plurality of fixed charge plates on a substrate, the plurality of fixed charge plates having a same height, being arranged in...
7031136 Variable capacitors, composite materials  
Tunable capacitors ( 10, 20, 30, 40 ) have a dielectric material ( 16, 26, 36, 42 ) between electrodes, which dielectric material comprises an insulating material ( 17, 27, 37, 42 ) and...
7030463 Tuneable electromagnetic bandgap structures based on high resistivity silicon substrates  
Electrically tunable electromagnetic bandgap (“TEBG”) structures using a ferroelectric thin film on a semiconductor substrate, tunable devices that include such a TEBG structure, such as a...
7006342 Variable capacitor having a rigidity-increasing feature  
A variable capacitor. The variable capacitor has a movable capacitor electrode including a major surface and a fixed capacitor electrode including a major surface. The major surface of the fixed...
7002787 Capacitor apparatus of the capacity variable type  
The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an...
6980412 Variable tunable range MEMS capacitor  
The invention relates to a variable capacitor and method of making it. The variable capacitor comprises a fixed charge plate disposed in a substrate, a movable charge plate disposed above the fixed...
6975499 Vacuum variable capacitor with energization and heat shielding bellows  
A vacuum variable capacitor includes an energization bellows arranged in a vacuum vessel and having ends mounted to a movable-electrode support plate and a movable side-end plate, respectively, a...
6975498 Variable capacitor  
A variable capacitor includes a stator and a rotor rotatably supported by a cover relative to the stator. The stator includes a first stator electrode of two or more layers and a second stator...
6970340 Capacitor apparatus of the capacity variable type  
The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an...
6963481 Decreasing load on devices for mass spectrometers  
A detector assembly including a support element, a first capacitor plate and a second capacitor plate. The support element is configured to attach the detector assembly to a chamber wall that...
6961228 Capacitor apparatus of the capacity variable type  
The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an...
6954348 Tunable MEMS capacitor  
Various embodiments of tunable capacitors are disclosed. One embodiment is in the form of a tunable capacitor ( 368 ) having a pair of stationary capacitor electrodes ( 392 ) that are fixed to and...
6952337 Variable capacitor  
A variable capacitor is provided such that it is possible to make nonlinear distortion small and use at high power handling capability, and such that a variable rate of capacitance is not...
6946948 Crosspoint switch with switch matrix module  
A crosspoint switch including a switch matrix modules and programming features. A switch matrix modules include input lines tied to inputs of the switch through precompensation networks. The...
Matches 1 - 50 out of 189 1 2 3 4 >