27results about "Capacitor with electrode distance variation" patented technology

In some implementations, a superconducting integrated circuit has a tunable parallel-plate capacitor, and a magnetic field generator operable to apply a magnetic field to the tunable parallel-plate capacitor to tune a capacitance of the tunable parallel-plate capacitor. The tunable parallel-plate capacitor includes a first capacitor plate having a plane, a second capacitor plate having a plane, and a dielectric interposed between the first capacitor plate and the second capacitor plate. The plane of the second capacitor plate is geometrically parallel to the plane of the first capacitor plate. In some implementations, a superconducting integrated circuit has a tunable parallel-plate capacitor, and an electric field generator operable to apply an electric field to the tunable parallel-plate capacitor to tune a capacitance of the tunable parallel-plate capacitor. The tunable parallel-plate capacitor includes a pair of capacitor plates, and a dielectric interposed between the pair of plates.

A variable capacitor comprising: a first elongate member comprising a first electrically conductive portion positioned towards a first distal end of the first elongate member and a second electrically conductive portion positioned towards a second distal end of the first elongate member, wherein the first elongate member is configured to pivot on a first fulcrum positioned between the first and second electrically conductive portions, wherein a first distance between the first fulcrum and the first electrically conductive portion of the first elongate member is different to a second distance between the first fulcrum and the second electrically conductive portion of the first elongate member; a second elongate member comprising a first electrically conductive portion positioned towards a first distal end of the second elongate member and a second electrically conductive portion positioned towards a second distal end of the second elongate member, wherein: one of the first and second elongate members is a cathode and the other of the first and second elongate members is an anode, a first capacitor is formed by the respective first electrically conductive portions of the cathode and anode, wherein a capacitance of the first capacitor is a function of a first pivoting angle of the first elongate member on the first fulcrum, and a second capacitor is formed by the respective second electrically conductive portions of the cathode and anode, wherein a capacitance of the second capacitor is a function of the first pivoting angle of the first elongate member on the first fulcrum, the first and second electrically conductive portions of the cathode are connected to a positive voltage of a first electric circuit, the first and second electrically conductive portions of the anode are connected to a negative voltage of the first electric circuit, such that the first and second capacitors are connected in parallel, and wherein: application of an electrical potential difference by the first electric circuit causes pivoting of the first elongate member and a corresponding variation in the capacitance of the first capacitor that is proportional to the electrical potential difference and a corresponding variation in a capacitance of the second capacitor that is inversely proportional to the electrical potential difference, wherein the magnitude of the variations in capacitances of the first and second capacitors are different such that a sum of the capacitances of the first and second capacitor varies as a function of the electrical potential difference.

Provided is a sensing fiber member which can be processed in long lengths, which excels in mass production, which is supple and has an excellent texture, and which is much less costly than a contact sensing fiber member (a piezoelectric yarn) for which a conventional piezoelectric material is used. This sensing fiber member has at least two covering yarns for which covering is achieved by wrapping an insulating fiber serving as a covering material in one direction around a linear conductor constituting a core material, two of the covering yarns being arranged close to each other. The sensing fiber member is characterized by reading changes in resistance and / or changes in capacitance between the linear conductors of the two covering yarns arranged close to each other.

A vibration-driven energy harvester includes: a base; a movable assembly that includes a first movable electrode and a second movable electrode; a first fixed electrode disposed so as to face opposite the first movable electrode; a second fixed electrode disposed so as to face opposite the second movable electrode; an elastic support member having a fixed end fixed to the base, the elastic support member supporting the movable assembly; a first electret formed at least at one of the first movable electrode and the first fixed electrode; and a second electret formed at least at one of the second movable electrode and the second fixed electrode, wherein: a gap distance between a front end of the second movable electrode and a facing surface of the second fixed electrode facing the front end of the second movable electrode is different from a gap distance between a front end of the first movable electrode and a facing surface of the first electrode facing the front end of the first movable electrode.

The variable capacitor includes first and second movable capacitor plate assemblies disposed inside the housing and including first and second movable capacitor plates. A first fixed capacitor plate and a second fixed capacitor plate are disposed proximal to the first and second movable capacitor plates, respectively. The plurality of capacitor plates may comprise concentric cylindrical blades that are variably interengaged, and the first movable capacitor plate and the first fixed capacitor plate may be coaxial with the second movable capacitor plate and the second fixed capacitor plate. A plurality of actuators may be provided to move the first and second movable capacitor plate assemblies forward and backward independently relative to the first and second fixed capacitor plate assemblies, changing the capacitance of the variable capacitor by independently adjusting the amount of interengagement of the capacitor plates of each pair of capacitor plate assemblies.

The utility model discloses a protection device for preventing a micro-capacitor from being damaged, which belongs to the technical field of micro-capacitor protection, and comprises a micro-capacitor body and a wiring terminal arranged on the micro-capacitor body, the bottom of the micro-capacitor body is detachably connected with a base, and the wiring terminal is arranged on the micro-capacitor body. The base is provided with a placing groove which forms an embedded structure with the bottom end of the micro-capacitor body, the outer side of the base is provided with a ring sleeve, the inner wall of the ring sleeve is provided with an internal thread, the outer side of the micro-capacitor body is detachably connected with a protective cover, the inner diameter of the bottom end of the protective cover is matched with the outer diameter of the micro-capacitor body, and the inner diameter of the bottom end of the protective cover is matched with the outer diameter of the micro-capacitor body. And the root part of the outer wall of the protective cover is provided with an external thread which is in threaded connection with the internal thread, so that the micro capacitor body can be effectively prevented from being extruded and damaged in the transportation process, the wiring terminal can be prevented from being bent and falling off, and a very good protection effect on the micro capacitor body is achieved.

The invention provides a radio frequency (RF) micro electro mechanical system (MEMS) switch. The switch comprises a substrate; a first signal conductor on the substrate; a ground conductor supported on the substrate on either side of the first signal conductor; and a MEMS bridge, at least one end of which is mechanically connected to the substrate through at least one anchor point, the MEMS bridge comprising a variable capacitor region disposed over the first signal conductor, the variable capacitor region comprising a first dielectric layer and a first conductive layer, the first conductive layer is located on a surface of the first dielectric layer facing the substrate and is divided into at least a first longitudinal conductive portion and a second longitudinal conductive portion, the first longitudinal conductive portion and the second longitudinal conductive portion being spaced apart in a direction perpendicular to a longitudinal length of the MEMS bridge, wherein the substrate comprises one or more pull-down substrate conductors, and the MEMS bridge comprises one or more actuatable conductors located between the anchor point and the variable capacitor region and disposed above the one or more pull-down substrate conductors, wherein at least one of the one or more actuatable conductors includes an embedded portion extending longitudinally along the MEMS bridge and between the first and second longitudinal conductive portions.

The application provides a tunable capacitor, comprising a cylinder, a high-voltage electrode, a low-voltage electrode, a tunable electrode and a plurality of shielding mechanisms; the high-voltage electrode and the low-voltage electrode are partially arranged in the cylinder, and the high-voltage electrode and the low-voltage electrode are partially arranged outside the cylinder; the part of the high-voltage electrode arranged in the cylinder and the part of the low-voltage electrode arranged in the cylinder are alternately arranged along the height direction of the cylinder; each shielding mechanism is arranged in the cylinder, and each shielding electrode is arranged between adjacent high-voltage electrodes and low-voltage electrodes; the tunable electrode is arranged in the cylinder and is used for adjusting the distance between the high-voltage electrode and the low-voltage electrode to adjust the capacitance. In the application, the shielding mechanism can block the leakage current flow path between the high-voltage electrode and the low-voltage electrode, reduce the equivalent resistance between the high-voltage electrode and the low-voltage electrode, reduce the dielectric loss of the capacitor, the tunable electrode can smoothly adjust the capacitance of the capacitor, and the difference between the capacitance of the capacitor and the rated capacitance is reduced.

A noise filter includes a first terminal, a second terminal, and a housing accommodating the first terminal and the second terminal. The first terminal includes a mounting portion and an extension portion extending from the mounting portion, and the second terminal includes a mounting portion and an extension portion extending from the mounting portion. The housing accommodates the first terminal and the second terminal such that an extension portion of the first terminal and an extension portion of the second terminal are arranged side by side with a gap between the extension portion of the first terminal and the extension portion of the second terminal. The housing includes an adjustment mechanism that adjusts a gap between the extension portion of the first terminal and the extension portion of the second terminal.

A noise filter includes a first terminal, a second terminal, and a housing accommodating the first terminal and the second terminal. The first terminal includes a mounting portion and an extending portion extending from the mounting portion, and the second terminal includes a mounting portion and an extending portion extending from the mounting portion. The housing houses the first terminal and the second terminal such that the extending portion of the first terminal and the extending portion of the second terminal are arranged side by side with an interval between the extending portion of the first terminal and the extending portion of the second terminal. The housing includes an adjustment mechanism that adjusts the interval between the extending portion of the first terminal and the extending portion of the second terminal.

The present application relates to the technical field of matcher device, especially to a matcher device suitable for high pressure working environment, which aims at the problem that the existing radio frequency matcher cannot be adapted and optimized for the high pressure environment formed by the injection of sulfur hexafluoride into a sealed tank, is prone to abnormal operation or even stoppage failure under the action of high pressure in the tank, and cannot meet the use requirements of special experimental scenes, and proposes the following technical scheme: a matcher shell is provided with two groups of baffles; two groups of capacitors are arranged between the two groups of baffles, and adjusting mechanisms are arranged at two ends of the capacitors respectively, the adjusting mechanisms are used for adjusting the capacitance value of the capacitors to dynamically adjust the self impedance of the matcher; and a circuit board is installed in the matcher shell. The matcher can be used in high pressure working environment, is safe and convenient, and has good social and economic benefits.

This invention discloses a variable vacuum capacitor capable of rapidly switching large capacitance values, comprising a first capacitor, a second capacitor, an intermediate electrode disk, and a driving device. The first capacitor includes a first electrode group A and a first electrode group C, and the second capacitor includes a second electrode group B and a second electrode group C. The intermediate electrode disk is disposed between the first and second capacitors, and the first and second electrode groups C are respectively fixed on opposite sides of the intermediate electrode disk. The second electrode group B is electrically connected to a moving disk. Conductive protrusions are provided on the intermediate electrode disk and / or the moving disk. The driving device drives the moving disk to reciprocate relative to the intermediate electrode disk, thereby switching the second capacitor between an open-circuit state and a short-circuit state. In the short-circuit state, the moving disk and the intermediate electrode disk are connected and conductive through the conductive protrusions. This invention achieves rapid switching of large capacitance values ​​by changing the short-circuit and open-circuit states of the second capacitor.

The variable capacitor includes an enclosure having a first conductive collar and a second conductive collar separated by an electrically insulating intermediate element. A movable capacitor plate assembly is electrically coupled to the first conductive collar, and a stationary capacitor plate assembly is electrically coupled to the second conductive collar. An actuator extends into the enclosure to advance and retract the movable capacitor plate assembly relative to the stationary capacitor plate assembly. A hermetically sealed volume within the enclosure includes a fluid dielectric that acts as a dielectric between the capacitor plates of the movable capacitor plate assembly and the capacitor plates of the stationary capacitor plate assembly. A flexible structure is provided to accommodate the displaced fluid dielectric when the movable capacitor plate assembly is advanced relative to the stationary capacitor plate assembly.

An apparatus includes a circuit board (440) having a first conductive pad (420) on a circuit board surface and a conductive overlay (410B) having a first surface and a second surface opposite the first surface and configured to deflect in response to a touch on the first surface. A protrusion (490) protrudes from the second surface and is configured as a second conductive pad. The circuit board, the conductive overlay, and the protrusion are arranged such that the second surface faces the circuit board surface and is spaced apart from the first conductive pad by a first distance (d1). The protrusion is spaced apart from the first conductive pad by a second distance (d2) and has an overlap region. The apparatus can also include spacers (450A, 450B) configured to space the first conductive pad apart from the second surface by the first distance and to space the protrusion apart from the second surface by the second distance.

A variable capacitor comprising: a first elongate member comprising a first electrically conductive portion positioned towards a first distal end of the first elongate member and a second electrically conductive portion positioned towards a second distal end of the first elongate member, wherein the first elongate member is configured to pivot on a first fulcrum positioned between the first and second electrically conductive portions, wherein a first distance between the first fulcrum and the first electrically conductive portion of the first elongate member is different to a second distance between the first fulcrum and the second electrically conductive portion of the first elongate member; a second elongate member comprising a first electrically conductive portion positioned towards a first distal end of the second elongate member and a second electrically conductive portion positioned towards a second distal end of the second elongate member, wherein: one of the first and second elongate members is a cathode and the other of the first and second elongate members is an anode, a first capacitor is formed by the respective first electrically conductive portions of the cathode and anode, wherein a capacitance of the first capacitor is a function of a first pivoting angle of the first elongate member on the first fulcrum, and a second capacitor is formed by the respective second electrically conductive portions of the cathode and anode, wherein a capacitance of the second capacitor is a function of the first pivoting angle of the first elongate member on the first fulcrum, the first and second electrically conductive portions of the cathode are connected to a positive voltage of a first electric circuit, the first and second electrically conductive portions of the anode are connected to a negative voltage of the first electric circuit, such that the first and second capacitors are connected in parallel, and wherein: application of an electrical potential difference by the first electric circuit causes pivoting of the first elongate member and a corresponding variation in the capacitance of the first capacitor that is proportional to the electrical potential difference and a corresponding variation in a capacitance of the second capacitor that is inversely proportional to the electrical potential difference, wherein the magnitude of the variations in capacitances of the first and second capacitors are different such that a sum of the capacitances of the first and second capacitor varies as a function of the electrical potential difference.

A variable capacitor includes: a first conductive layer; a second conductive layer; and a capacitance layer sandwiched between the first conductive layer and the second conductive layer. Each of the first conductive layer and the second conductive layer is a ferromagnetic layer containing a ferromagnetic material. The first conductive layer has a first magnetic domain and a second magnetic domain having magnetization oriented in a direction different from the first magnetic domain. In the variable capacitor, a domain wall which is a boundary between the first magnetic domain and the second magnetic domain is configured to be movable within at least an area of the first conductive layer overlapping the capacitance layer in a laminating direction in a first direction within a plane of the first conductive layer.

A variable capacitor includes an enclosure having first and second conductive collars separated by an intermediate electrically insulating element. A movable capacitor plate assembly is electrically coupled to the first conductive collar, and a fixed capacitor plate assembly is electrically coupled to the second conductive collar. An actuator extends into the enclosure for advancing and retracting the movable capacitor plate assembly relative to the fixed capacitor plate assembly. A hermetically sealed volume within the enclosure contains a dielectric fluid serving as a dielectric between a capacitor plate of the movable capacitor plate assembly and a capacitor plate of the fixed capacitor plate assembly. A flexible structure is provided to contain the dielectric fluid displaced when the movable capacitor plate assembly is advanced toward the fixed capacitor plate assembly.

The present invention relates to a radio frequency (RF) microelectromechanical system (MEMS) switch comprising a substrate, a first signal conductor on the substrate, ground conductors supported on both sides of the first signal conductor on the substrate, and a MEMS bridge having at least one end mechanically connected to the substrate by at least one anchor, wherein the MEMS bridge comprises a variable capacitor region provided on the first signal conductor, the variable capacitor region comprising a first dielectric layer and a first conductive layer, the first conductive layer positioned on the surface of the first dielectric layer facing the substrate. The RF MEMS switch is provided, comprising a substrate comprising one or more pull-down substrate conductors, the MEMS bridge comprising one or more operable conductors located between an anchor and a variable capacitor region and provided on one or more pull-down substrates, at least one of the one or more operable conductors comprising an embedded portion extending longitudinally along the MEMS bridge between the first and second longitudinal conductive portions.

The invention relates to a microelectromechanical MEMS component (100) for determining ambient pressure and / or sound pressure, with a parallel capacitance plate structure (101), wherein the capacitance plate structure (101) comprises a static electrode (103) and a movable electrode (105) mounted to be deflectable relative to the static electrode (103) along a deflection direction (D), wherein the static electrode (103) comprises a first static electrode plate (107) and a second static electrode plate (109), wherein the movable electrode (105) comprises a first movable electrode plate (111) and a second movable electrode plate (113) connected to the first movable electrode plate (111), wherein the first static electrode plate (107) and the second static electrode plate (109) are spaced apart from each other along the deflection direction (D).wherein the first static electrode plate (107) defines a first functional layer (F1) and the second static electrode plate (109) defines a second functional layer (F2) of the MEMS component (100), wherein the first movable electrode plate (111) is arranged in the second functional layer (F2) and is positioned opposite the first static electrode plate (107), wherein the second movable electrode plate (113) is arranged in the first functional layer (F1) and is positioned opposite the second static electrode plate (109), and wherein the first and second movable electrode plates (111, 113) can be deflected together from the first and second functional layers (F1, F2) by deflecting the movable electrode (105).

The utility model relates to the technical field of mobile communication, in particular to a device for debugging capacitance of a filter, which comprises a capacitor seat, a round blind hole is longitudinally arranged on the end face of a first end of the capacitor seat, a fly rod hole is transversely arranged on the end portion of a second end of the capacitor seat, and the first end of the capacitor seat is used for butting a tuning screw. The end part of the tuning screw can be inserted into the circular blind hole, the fly rod hole is used for connecting a fly rod, the distance between the inner end of the circular blind hole and the fly rod hole is not less than 2mm, two opposite side surfaces of the capacitor seat are concave inwards to form grooves, and the capacitor body is mounted in the grooves. According to the utility model, the production repair rate can be reduced, the debugging speed is improved, and the product production efficiency is effectively improved.

The application provides a circuit board and a manufacturing method thereof. The circuit board has a first area, a connecting area and a second area which are connected with each other, the first area and the second area are oppositely arranged, the circuit board comprises a capacitor layer and a coil layer, the capacitor layer comprises a first capacitor sheet located in the first area and a second capacitor sheet located in the second area, the coil layer comprises a first coil located in the first area and a second coil located in the second area, a first end of the first coil is electrically connected with a third end of the second coil through a conductive line, a second end of the first coil and a fourth end of the second coil extend to the connecting area and form two output ends, the first coil is used for generating a first magnetic force, the second coil is used for generating a second magnetic force which is opposite to the first magnetic force, and the distance between the first area and the second area is variable, so that the capacitance between the first capacitor sheet and the second capacitor sheet is changed. The circuit board provided by the application is internally provided with a trimmer capacitor structure, the trimmer capacitor structure occupies a small space, has a simple structure and low cost.

The utility model discloses a motor integrated variable vacuum capacitor, which comprises a vacuum capacitor and a motor, the vacuum capacitor comprises two electrode groups and a positioning rod fixed on one electrode group, and an output shaft of the motor is directly connected with the positioning rod in a threaded manner. The motor is used for driving the positioning rod to do linear motion in the axial direction through the output shaft so as to change the relative position of the two electrode sets. According to the utility model, by adopting the integrated structure design and installation mode that the output shaft of the motor is directly connected with the positioning rod of the vacuum capacitor, the influence of connecting pieces and mutual fit clearances thereof on the position of an electrode group of the variable vacuum capacitor is reduced, the capacitance precision of the variable vacuum capacitor is improved, and the volume of the variable vacuum capacitor is greatly reduced; and meanwhile, the manufacturing cost is reduced, and the requirements on high capacitance precision and miniaturization of the variable vacuum capacitor in the field of semiconductor manufacturing equipment are met.

The invention relates to a micro-electromechanical MEMS component (100) for determining ambient pressure and / or acoustic pressure, comprising a parallel capacitive plate structure (101) comprising a fixed electrode (103) and a movable electrode (105); the fixed electrode comprises first and second fixed electrode plates (107, 109); the movable electrode comprises a first movable electrode plate (111) and a second movable electrode plate (113) connected with the first movable electrode plate (111); the first and second fixed electrode plates are spaced apart from each other in an offset direction; defining a first functional layer (F1) of the MEMS component by means of the first fixed electrode plate and defining a second functional layer (F2) by means of the second fixed electrode plate; the first movable electrode plate is arranged in the second functional layer and is arranged opposite to the first fixed electrode plate; the second movable electrode plate is arranged in the first functional layer and is arranged opposite to the second fixed electrode plate; the first and second movable electrode plates may collectively be offset from the first and second functional layers by offset of the movable electrodes.

To provide a noise filter and a wire harness that can adjust the target frequency of noise reduction while keeping costs down.SOLUTION: A noise filter includes a first terminal 30 fixed to an end of a first electric wire 10, a second terminal 40 fixed to an end of a second electric wire 20, and a housing 50 that houses the first terminal 30 and the second terminal 40. The first terminal 30 includes an attachment portion 31 that is attached to a core wire 11 of the first electric wire 10 and an extension portion 32 that extends from the attachment portion 31. The second terminal 40 includes an attachment portion 41 that is attached to a core wire 21 of the second electric wire 20, and an extension portion 42 that extends from the attachment portion 41. The housing 50 houses the first terminal 30 and the second terminal 40 such that the extension portion 32 of the first terminal 30 and the extension portion 42 of the second terminal 40 are arranged side by side with a gap G between them, and the housing 50 is provided with an adjustment mechanism 60 that adjusts the gap G between the extension portion 32 of the first terminal 30 and the extension portion 42 of the second terminal 40.SELECTED DRAWING: Figure 2

The present invention provides a radio frequency, RF, microelectromechanical systems, MEMS, switch comprising: a substrate; a first signal conductor on the substrate; ground conductors supported on either side of the first signal conductor on the substrate; and a MEMS bridge at least one end of which is mechanically connected to the substrate by way of at least one anchor, the MEMS bridge comprising a variable capacitor region provided over the first signal conductor, the variable capacitor region comprising a first dielectric layer and a first conductive layer, the first conductive layer positioned on a surface of the first dielectric layer facing the substrate and separated into at least a first longitudinal conductive portion and a second longitudinal conductive portion which are spaced apart in a direction perpendicular to the longitudinal length of the MEMS bridge, wherein the substrate comprises one or more pull-down substrate conductors and the MEMS bridge comprises one or more actuatable conductors located between the anchors and the variable capacitor region and provided above the one or more pull-down substrate conductors, wherein at least one of the one or more actuatable conductors comprises an embedded portion which extends longitudinally along the MEMS bridge and between the first and second longitudinal conductive portions.