Abstract: The present invention discloses an LC tank capable of reducing electromagnetic radiation by itself and the manufacturing method of the same. An embodiment of said LC tank comprises: a first tank area whose boundary is defined by a first part of an inductance; a second tank area whose boundary is defined by a second part of the inductance in which the second part includes a gap; a cross-interconnection structure operable to electrically connect the first and second parts of the inductance and distinguish the first tank area from the second tank area; and at least one capacitance formed inside at least one of the first and second tank areas, wherein the area ratio of the first tank area to the second tank area is between 20% and 80%.

Abstract: The principles described herein provide an electrical power supply system having circuitry that reduces the noise and interference of harmonic signals introduced by non-linear loads. In particular, one or more embodiments can include a power correction system that includes transformers and capacitors having parameters and configured to redirect harmonic energy in a power signal to deliver clean power to loads in a system. Additionally, the power correction system can mitigate negative effect of in-rush current passing through the electrical power supply system resulting in more efficient energy usage and reducing power failure of loads in the system. Moreover, the power correction system can include various additional features that facilitate convenient connection and/or disconnection of the power control system without disrupting the delivery of electrical power to loads in the system.

Abstract: Radio frequency (RF) filter structures and related methods and RF front-end circuitry are disclosed. In one embodiment, an RF filter structure includes a first terminal and a first tunable RF filter path defined between the first terminal and a second terminal. The first tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a first frequency. The first frequency may be provided within a first frequency band. Additionally, the RF filter structure includes a second tunable RF filter path defined between the first terminal and the second terminal. The second tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a second frequency. The second frequency may be within a second frequency band. In this manner, the RF filter structure is configured to provide impedance tuning for multiple impedance bands simultaneously.

Abstract: Communication network (100) for wireless communication, comprising a base station (1, 16, 26), a wireless terminal (3, 15, 18, 25, 37) and at least one repeater (5, 10, 20, 28, 33) which is connected between the base station (1, 16, 26) and the wireless terminal (3, 15, 18, 25, 37), the base station (1, 16, 26) being configured for transmitting and receiving a communication signal on multiple information channels, the terminal (3, 15, 18, 25, 37) being configured for transmitting and receiving a communication signal on multiple information channels, and the repeater (5, 10, 20, 28, 33) being configured for receiving, passing through and retransmitting communication signals on multiple information channels, and contains a converting device (101, 103, 106, 110, 118) for frequency conversion of at least one information channel passed through, a test receiver (6, 12, 22, 34, 38) being additionally comprised which is configured for determining unused frequency ranges for wireless communication, the test receiver (

Abstract: Radio frequency (RF) filter structures and related methods and RF front-end circuitry are disclosed. In one embodiment, an RF filter structure includes a first terminal and a first tunable RF filter path defined between the first terminal and a second terminal. The first tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a first frequency. The first frequency may be provided within a first frequency band. Additionally, the RF filter structure includes a second tunable RF filter path defined between the first terminal and the second terminal. The second tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a second frequency. The second frequency may be within a second frequency band. In this manner, the RF filter structure is configured to provide impedance tuning for multiple impedance bands simultaneously.

Abstract: Radio frequency (RF) filter structures and related methods and RF front-end circuitry are disclosed. In one embodiment, an RF filter structure includes a first terminal and a first tunable RF filter path defined between the first terminal and a second terminal. The first tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a first frequency. The first frequency may be provided within a first frequency band. Additionally, the RF filter structure includes a second tunable RF filter path defined between the first terminal and the second terminal. The second tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a second frequency. The second frequency may be within a second frequency band. In this manner, the RF filter structure is configured to provide impedance tuning for multiple impedance bands simultaneously.

Abstract: An inductor component includes a plurality of conductive elements, each formed as an individual patch of conductive material, with the conductive elements arranged in a vertical stack and tightly coupled to one another. Dielectric is disposed between more adjacent conductive elements, the dielectric has a permittivity and is sufficiently thin so as to provide a mutual inductance factor of at least one-half or greater between adjacent ones of the conductive elements. The dielectric is typically thinner than the adjacent conductors.

Abstract: A system and a device for wirelessly transferring power without a cable are provided. A wireless electromagnetic receiver includes a first device configured to oscillate based on an electromagnetic field. The wireless electromagnetic receiver further includes a second device configured to transform the oscillation of the first device into a power, the second device being in contact with the first device.

Abstract: A system and a device for wirelessly transferring power without a cable are provided. A wireless electromagnetic receiver includes a first device configured to oscillate based on an electromagnetic field. The wireless electromagnetic receiver further includes a second device configured to transform the oscillation of the first device into a power, the second device being in contact with the first device, and the second device including a precharged capacitor.

Abstract: To suppress changes in capacitance due to displacement between electrodes opposing each other across a dielectric layer, thereby allowing stable manufacturing of a capacitance device having a desired capacitance. A capacitance device is of a configuration including a dielectric layer, a first electrode formed on a predetermined surface of the dielectric layer, and a second electrode formed on a surface on the opposite side of the dielectric layer from the predetermined surface. The forms of the first and second electrodes are set so that even in the event that the first electrode is relatively displaced regarding position in a predetermined direction as to the second electrode, the area of the opposing-electrode region between the first electrode and to the second electrode is unchanged.

Abstract: A high frequency module includes a multilayer substrate, a power amplifier, thermal vias, and a bandpass filter. The power amplifier is mounted on the multilayer substrate. The thermal vias are provided in the multilayer substrate directly below the power amplifier and configured to dissipate heat of the power amplifier. The bandpass filter is provided in the multilayer substrate and connected to the power amplifier. The thermal via defines an inductor included in the bandpass filter. The bandpass filter overlaps the power amplifier when viewed in a lamination direction of the multilayer substrate.

Abstract: A noise filter device has a coil formed by winding a conductive wire on a magnetic core. The noise filter device further has a bracket formed of a magnetic material and grounded. The bracket has a bottom plate and two end plates that project from the bottom plate. The end plates face opposite end surfaces of the magnetic core with predetermined gaps defined between the end plates and the end surfaces. The noise filter device further has capacitors that form part of a noise filter circuit together with the coil and that are connected to the bracket. A housing houses the coil, the capacitors and the bracket in an at least partly exposed state, and input and output terminals are provided for the noise filter circuit.

Abstract: A semiconductor inductor structure may include a first spiral structure, located on a first metal layer, having a first outer-spiral electrically conductive track and a first inner-spiral electrically conductive track separated from the first outer-spiral electrically conductive track by a first dielectric material. A second spiral structure, located on a second metal layer, having a second outer-spiral electrically conductive track and a second inner-spiral electrically conductive track separated from the second outer-spiral electrically conductive track by a second dielectric material may also be provided. The first outer-spiral electrically conductive track may be electrically coupled to the second outer-spiral electrically conductive track and the first inner-spiral electrically conductive track may be electrically coupled to the second inner-spiral electrically conductive track.

Abstract: A tunable guard ring for improved circuit isolation is disclosed. In an exemplary embodiment, an apparatus includes a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit. The apparatus also includes a tunable capacitor forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductor to a second inductor.

Abstract: A tunable filter comprises at least two resonator circuits placed between two matching networks characterized in that: one resonator is connected at a first of its ends to the ground plane M of the filter by metallized holes and at a second end to a MEMS network; the distance between the two resonators forms an inter-resonator inductive coupling circuit; an inter-resonator coupling capacitor is formed by two etched lines connected to the first and second resonators; the MEMS networks are distributed around the ends of the resonators; the MEMS networks are connected between the first and second resonator and the ground plane M by means of metallized holes; and the filter comprises a number of independent electrical control voltages designed to actuate the MEMS.

Abstract: A ceramic multilayer component includes a ceramic body including a plurality of ceramic layers stacked on top of one another, internal electrodes located inside the ceramic multilayer body, terminal electrodes located on a mounting surface of the ceramic multilayer body, and via hole conductors that are arranged inside the ceramic multilayer body so as to connect the internal electrodes and the terminal electrodes to each other. An insulating portion is arranged to extend as a single body across a surface of the ceramic multilayer body and across the terminal electrodes. The insulating portion covers at least a portion of each of the via conductors and covers a portion of each of the terminal electrodes when viewed from the mounting surface side.

Abstract: In a filter, LC parallel resonators are arranged along an x-axis direction of a multilayer body and include coils and capacitors, respectively. LC parallel resonators adjacent to each other in the x-axis direction are electromagnetically coupled to each other. Each of the coils includes line conductor layers disposed on an insulating layer, a first via-hole conductor that extends from the line conductor layers to a negative direction of a z-axis direction and that is electrically connected to one conductor layer of the corresponding one of the capacitors, and a second via-hole conductor that extends from the line conductor layers to the negative side of the z-axis direction and that is electrically connected to the other conductor layer of the capacitor. A coupling conductor layer provides a capacitance between two line conductor layers which are adjacent to each other in the x-axis direction.

Abstract: In a high-frequency filter, four LC parallel resonators include four capacitors and four resonance coils, and are aligned in a predetermined direction. The four capacitors are defined by a ground conductor and a resonance capacitor conductor. The four coils are defined by a first via conductor, a second via conductor, and a line conductor. A floating conductor is provided astride within the four coils, and a sum of electrostatic capacitance between line conductors and the floating conductor is larger than electrostatic capacitance between the resonance capacitor conductor and the floating conductor, the line conductors overlapping with the floating conductor in planar view from a lamination direction.

Abstract: A filter includes: acoustic wave resonators connected between an input terminal and an output terminal; and a cancel circuit including an input connection portion and an output connection portion connected so that the cancel circuit is connected in parallel to at least a part of the acoustic wave resonators, wherein the cancel circuit includes a first acoustic wave resonator connected between a node between the input connection portion and the output connection portion and a ground.

Abstract: A band-pass filter that significantly reduces and prevents impedance mismatch without requiring special elements includes an input terminal, an output terminal, three LC parallel resonators arranged between the input terminal and the output terminal, and two trap resonators arranged between the three LC parallel resonators and the input terminal and the output terminal, respectively. Each of the two trap resonators is electromagnetically coupled to a respective one of the three LC parallel resonators.

Abstract: A tunable radio frequency (RF) duplexer and duplexing methods are disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split the RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The second hybrid coupler is operable to split the RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The RF filter circuit is operable to pass the first and second RF QHTSs to the second hybrid coupler and to reflect the first and second RF QHRSs back to the second hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal and to combine the first and second RF QHRSs into an RF receive output signal.

Abstract: To provide a capacitive device capable of accurately securing a capacitance value, a variable capacitive device capable of sufficiently securing a capacity variability rate, and a resonance circuit that uses the capacitive devices. A capacitive device includes a capacitive device body constituted of a dielectric layer and at least a pair of capacitive device electrodes that sandwich the dielectric layer and cause a desired electric field in the dielectric layer; and stress adjustment portions to adjust a stress caused in the dielectric layer of the capacitive device body.

Abstract: A filter device includes a band pass filter connected between a first signal terminal and a second signal terminal and an LC circuit connected in parallel with the band pass filter. The LC circuit has anti-resonant characteristics that make the LC circuit be open at a pass band of the band pass filter, and make attenuation in a specified frequency band outside of the pass band of the band pass filter higher than in a case in which the LC circuit is not connected, as a result of the LC circuit being connected.

Abstract: An electronic component includes a multilayer body including insulating layers that are stacked on each other. First and second LC parallel resonators each include via hole conductors extending in a z-axis direction and loop shaped conductive layers provided on the insulating layers. The first and second LC parallel resonators define a band pass filter. A first loop plane of the first LC parallel resonator and a second loop plane of the second LC parallel resonator are parallel or substantially parallel to the z-axis direction, are parallel or substantially parallel to each other, and are overlapped with each other at at least a portion of the first loop plane and the second loop plane in a plan view from the direction perpendicular or substantially perpendicular to the first loop plane. The first loop plane protrudes from the second loop plane at the positive direction in the z-axis direction.

Abstract: A composite electronic component may include: a ceramic body including a plurality of dielectric layers, first and second main surfaces opposing each other, first and second side surfaces opposing each other, and first and second end surfaces opposing each other; an inductor part including a first internal electrode disposed in the ceramic body and exposed to the first end surface and second side surface and a second internal electrode disposed in the ceramic body and exposed to the second end surface and second side surface; first and second internal connection conductors disposed in the ceramic body; and first to fourth external electrodes disposed on outer portions of the ceramic body and electrically connected to the first and second internal electrodes and the first and second internal connection conductors. The inductor part and the first and second internal connection conductors may be connected in parallel with each other.

Abstract: In an electronic component, first through n-th LC parallel resonators respectively include first through n-th inductors disposed in a device body such that they are sequentially arranged in a first direction in an order from the first inductor to the n-th inductor. The first and the n-th inductors are wound around respective winding axes extending along the first direction. At least one predetermined inductor among the second through the (n?1)-th inductors is wound around a winding axis extending in a second direction which is perpendicular or substantially perpendicular to the first direction. A center of the predetermined inductor in the second direction is positioned toward one side of the second direction with respect to the winding axes of the first and the n-th inductors, as viewed from a plane of the device body in a third direction which is perpendicular or substantially perpendicular to the first and second directions.

Abstract: A bandpass filter includes a multilayer body, which includes a plurality of dielectric layers stacked on top of one another, a first inductor and a second inductor connected in series with each other, and a third inductor connected to a connection point between the first and second inductors, and a ground potential. The first inductor is defined by substantially open-loop-shaped first electrode patterns provided on the dielectric layers being superposed with one another in the stacking direction of the multilayer body. The second inductor and the third inductor are defined by second electrode patterns and third electrode patterns provided on the dielectric layers being superposed with one another in the stacking direction.

Abstract: A parallel plate waveguide structure may be configured to suppress spurious propagating modes by including a lossy frequency selective surface (FSS) formed from a resistive film. The electromagnetic material properties of individual layers disposed between the conductive plates of the waveguide may be engineered to extend the suppression band of the fundamental TE mode up to the cutoff frequency of the second TE mode, and to simultaneously create a multi-octave TM mode suppression band. Applications include, for example, cavity mode suppression in microwave and millimeterwave assemblies at the board, package, and chip level.

Abstract: Radio frequency (RF) filter structures and related methods and RF front-end circuitry are disclosed. In one embodiment, an RF filter structure includes a first terminal and a first tunable RF filter path defined between the first terminal and a second terminal. The first tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a first frequency. The first frequency may be provided within a first frequency band. Additionally, the RF filter structure includes a second tunable RF filter path defined between the first terminal and the second terminal. The second tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a second frequency. The second frequency may be within a second frequency band. In this manner, the RF filter structure is configured to provide impedance tuning for multiple impedance bands simultaneously.

Abstract: Embodiments provide methods, devices, circuitry and systems for supporting or implementing functionality to provide a filtering circuit, and for providing a transmitter, receiver or transceiver system incorporating the same. One embodiment provides a circuit for filtering signals. The circuit comprises a first connection configured to be connected to a signal line carrying varying signal voltage and a second connection. The circuit also comprises a first circuit portion comprising a parallel resonant circuit having a variable capacitance connected in parallel with a first inductor; and a second circuit portion comprising a second inductor. The first circuit portion and the second circuit portion are connected in series between the first connection and the second connection.

Abstract: A capacitor of a certain LC resonator, among multiple LC resonators in a band-pass filter, is arranged at a side of one main surface in a stacking direction of a multilayer body of the band-pass filter and the capacitors of the remaining LC resonators are arranged at a side of the other main surface in the stacking direction of the multilayer body. One of a pair of capacitor electrodes of the capacitor of the certain LC resonator is grounded. The one capacitor electrode that is grounded covers at least the plurality of LC resonators, as viewed from the stacking direction of the multilayer body.

Abstract: A BPF comprises a first resonator and a second resonator connected in order between input/output terminals. The resonators each include an inductor conductor and a capacitor conductor formed in a laminate. The inductor conductors of both resonators have one open end and the other short-circuited end. The BPF further comprises a connection conductor for interconnecting the inductor conductors of the two resonators. This connection conductor connects the inductor conductor of the first resonator at a position close to the open end with the inductor conductor of the second resonator at a position close to the open end.

Abstract: An integrated Microelectromechanical Systems (“MEMS”) device (100). The MEMS device comprises a substrate (200, 300), a transition portion (118), and a differential inductor (1000, 1100, 1300). The transition portion is connected to and at least partially extends transversely away from a major surface of the substrate. The differential inductor is mechanically suspended above a major surface of the substrate at least partially by the transition portion. The differential inductor is also electrically connected to an electronic circuit external thereto by the transition portion. A first dielectric gap exists between the major surface of the substrate and the differential inductor.

Abstract: A bandpass filter includes a layered structure including a plurality of stacked dielectric layers, and first to third resonators provided within the layered structure. In terms of circuit configuration, the second resonator is located between the first and third resonators. The first resonator includes a first inductor and a first capacitor. The second resonator includes a second inductor and a second capacitor. The third resonator includes a third inductor and a third capacitor. The second inductor is disposed at a position different from that of each of the first and third inductors in the stacking direction of the dielectric layers. The second inductor is lower in inductance than the first and third inductors. The second capacitor is higher in capacitance than the first and third capacitors.

Abstract: A filter and a layout structure of the filter are provided. The filter includes a substrate, three capacitors, and three inductors. The three capacitors and the first and second inductors are disposed on a top surface of the substrate. The third inductor is disposed on a lateral surface of the substrate. First electrodes of the first and third capacitors and a first terminal of the first inductor are connected to a first I/O terminal of the filter. A first electrode of the second capacitor, a second electrode of the third capacitor and a first terminal of the second inductor are connected to a second I/O terminal of the filter. A first terminal of the third inductor is connected to second electrodes of the first and second capacitors.

Abstract: A filter housing having a first filter housing section extending around a first space with a first central axis, a second filter housing section extending around a second space with a second central axis, and a first coupler. The first and second filter housing sections are combined with the first coupler to produce the filter housing by connecting a first end of the first filter housing section and a first end of the second filter housing section to the first coupler into a first combined configuration to define a combined space to operatively support a printed circuit board extending into and continuously between the first and second spaces through the first coupler. The second end of the first filter housing section is configured to selectively operatively connect to either of a separate: a) end fitting for a cable; and b) a second coupler through which a printed circuit board can be directed.

Abstract: An ultra-wideband assembly is provided. The assembly includes a non-conductive tapered core having a conductive wire wound on an outer surface of the non-conductive tapered core, a low-frequency inductor coupled to the non-conductive tapered core via the distal end of the conductive wire and configured to allow mounting of the non-conductive tapered core at an angle with respect to the circuit board. The low frequency inductor is being disposed on a dielectric board configured to be coupled to the circuit board. The assembly includes an ultra-wideband capacitor coupled to the non-conductive tapered core via the proximate end of the conductive wire, the ultra-wideband capacitor being also coupled to the transmission line on the dielectric board.

Abstract: A laminated filter includes a first insulation layer including first and second coil patterns and a first capacitor pattern and a second insulation layer including third and fourth coil patterns and second and third capacitor patterns. The first and second coil patterns are located near one longer side of the first insulation layer and connected to the third and fourth coil patterns through penetration electrodes in the first insulation layer. The third and fourth coil patterns extend to ends of the second insulation layer through extension patterns and are connected to external electrodes to define input and output inductors. The first capacitor pattern is located near the other longer side of the first insulation layer and connected to an external ground electrode through an extension pattern. The first capacitor pattern faces the second and third capacitor patterns with the first insulation layer interposed therebetween to define input and output capacitors.

Abstract: The invention relates to a selective active low-pass filter and to a method for improving the selectivity of such a filter. The method includes centering, in the center of a network, the resonant element whose frequency is closest to the cutoff frequency of the filter and in inserting in series with this element a negative resistance of higher value than the parasitic resistance of the filter.

Abstract: A circuit includes a first input terminal for receiving a first pulsed voltage and a second input terminal for receiving a second pulsed voltage. The circuit further includes a load and an LC filter. The LC filter includes a coupled inductor pair that includes a first winding and a second winding magnetically coupled to each other. The first winding is coupled between the first input terminal and the load, and the second winding is coupled between the second input terminal and the load. A frequency of a first current flowing through the first winding is increased by the second pulsed voltage applied to the second winding.

Abstract: A signal transmission device includes: a first substrate and a second substrate disposed to oppose each other in a first direction; a first resonator including a plurality of first quarter wavelength resonators provided in a first region of the first substrate, and interdigitally coupled to one another in the first direction, and a single or the plurality of second quarter wavelength resonators provided in a region of the second substrate corresponding to the first region and interdigitally coupled to one another in the first direction; and a second resonator electromagnetically coupled to the first resonator, and performing a signal transmission between the second resonator and the first resonator. The first and the second quarter wavelength resonators located at positions nearest to one another in the first resonator, respectively have open ends which are disposed to oppose one another, and respectively have short-circuit ends which are disposed to oppose one another.

Abstract: A multilayer filter includes a plurality of mutually coupled resonant circuits provided within a multilayer body. Capacitor internal electrodes, inductor internal electrodes, and inductor via electrodes, ground via electrodes, and input-output via electrodes are arranged within the multilayer body. The ground via electrodes and the input-output via electrodes are provided on a dielectric layer on a mounting surface, or a second dielectric layer on a first dielectric layer provided on the mounting surface. The capacitor internal electrodes arranged towards the side of the mounting surface do not overlap the input-output electrodes when viewed in plan view. With this configuration, degradation in frequency characteristics of a resonant circuit is effectively prevented by controlling one of an inductive component and a capacitive component of the resonant circuit.

Abstract: The invention relates to a filtering network in HR-Si silicon technology defined by at least one cut-off frequency and comprising an input terminal for receiving the signal to be filtered and an output terminal for delivering a filtered signal. The network comprises a first ground line connected by its ends to first and second ground points connected directly to the ground plane, a second ground line connected via its ends to third and fourth ground points directly connected to the ground plane, a plurality of L/C resonant elements connected in parallel and linked via one end to one of the two ground lines and via the other end between them, by means of coupling inductors which thus create transmission zeros.

Abstract: An multiband resonator of the present invention includes a dielectric substrate including three or more dielectric layers, a ground conductor, a main-line conductor, a sub-line conductor, a sub open stub, a main open stub, a short-circuit conductor, a main through conductor, and a sub through conductor. The short-circuit conductor electrically connects one end of the main-line conductor to one end of the sub-line conductor and to the ground conductor. The main through conductor electrically connects the other end of the main-line conductor to one end of the main open stub that is aligned with that other end of the main-line conductor. The sub through conductor electrically connects the other end of the sub-line conductor to one end of the sub open stub that is aligned with that other end of the sub-line conductor.

Abstract: In an electronic component, a laminated body includes a plurality of insulator layers laminated on each other. First, second and third LC parallel resonators are loop-shaped LC parallel resonators that include via hole conductors extending in a z-axis direction and conductor layers provided on the insulator layers, and define a band pass filter. Loop planes of the first and third LC parallel resonators and a loop plane of the second LC parallel resonator are parallel to the z-axis direction and not parallel to each other.

Abstract: A filter includes a multilayer body including a plurality of insulator layers stacked on top of one another. Outer electrodes are provided on surfaces of the multilayer body. A first resonator is connected to a first one of the outer electrodes and includes a first coil. A second resonator is connected to a second one of the outer electrodes and includes a second coil. A third resonator includes a third coil that is magnetically coupled with the first and second coils. The first and second coils are respectively defined by coil conductor layers provided on an insulator layer. The third coil is defined by via hole conductors that penetrate through the insulator layer in a z-axis direction.

Abstract: A capacitance element body 2 is configured by two or more capacitors, the capacitors being formed of a dielectric layer 3 and at least three internal electrodes, the internal electrodes each being laminated via the dielectric layer 3 and arranged to allow a center of gravity of an electrode body forming electrostatic capacitance to be arranged on a straight line in a lamination direction. In the capacitance element body 2, said two or more capacitors are serially connected in a lamination direction of the internal electrodes. Furthermore, external terminals 20 to 23, each being electrically connected to an electrode body forming electrostatic capacitance, are formed in side surfaces of the capacitance element body 2.

Abstract: A tunable resonator includes at least one tunable capacitor coupled with at least one tunable inductor. The tunable resonator includes a mechanical tuning mechanism coupled with a connecting bridge and with first and second electrodes of the tunable inductor. The mechanical tuning mechanism also moves the first and second electrodes of the tunable inductor relative to an electrode of the tunable capacitor, and providing a force down onto or to pull up a connecting bridge to tune the tunable inductor.

Abstract: A planar capacitor includes, in part, a first metal line forming spiral-shaped loops around one of its end point, and a second metal line forming spiral-shaped loops between the loops of the first metal line. The first and second metal lines are coplanar, formed on an insulating layer, and form the first and second plates of the planar capacitor. The planar capacitor may be used to form a filter. Such a filter includes a first metal line forming first spiral-shaped loops, a second metal line forming second spiral-shaped loops, and a third metal line—coplanar with the first and second metal lines—forming loops between the loops of the first and second metal lines. The filter further includes a first inductor coupled between the first and third metal lines, and a second inductor coupled between the second and third metal lines.

Abstract: A filter for use in a coaxial cable network includes a printed circuit board having first and second opposed major surfaces, and first and second opposing sides. The opposed major surfaces are substantially parallel to a single plane, and are bisected by a longitudinal axis. The first and second opposing sides are substantially parallel to the longitudinal axis. The filter further includes an input terminal and an output terminal connected to the printed circuit board. The input terminal and the output terminal have an axis extending substantially parallel to the longitudinal axis. A signal path is disposed on the printed circuit board and extends from the input terminal toward the output terminal. The filter further includes a plurality of resonator elements fabricated upon the first opposed major surface. In one embodiment, the inductor elements are arranged in series along the signal path defining a footprint of less than 540 square millimeters.