Abstract: A noise filter includes a wound unit that is composed of two film sheets, one of which is laid on another. On the film sheets, conductors are respectively formed, to which terminals are fixed, respectively. By laying one of the film sheets on another film sheet and winding the same together with the conductors, the conductors on the respective film sheets oppose each other via the film sheet, whereby distributed capacitance is formed between the conductors. Cores are inserted in a hollow portion of the wound unit, whereby inductances are respectively formed by the respective conductors and the cores. The inductances connected between the terminals at an input side and the terminals at an output side, respectively. The above-described distributed capacitance is connected between the conductors that include the inductances.

Abstract: Filter unit for connectors, comprising an electrically insulating substrate (2) with passages (3) for the contact elements of a connector, capacitors being disposed on both flat sides (4, 4') of the substrate (2) in the region of the passages (3), said capacitors made up of first electrodes, each formed by at least one layer (5, 5') of electrically conducting material extending over said sides (4, 4') of the substrate (2), and provided with correspondingly situated larger passages (6), second electrodes formed by spaced-apart electrode patches (9, 9') with passages (10) and at least one layer (7, 7') of dielectric material extending between said first and second electrodes. By connecting said second electrodes to the contact elements of a connector, and by connecting said first electrodes to the housing thereof, each contact element is capacitively decoupled.

Abstract: An LC composite component comprises a laminated structure which is formed by stacking first and second inductor layers while holding a capacitor layer between the same. The first and second inductor layers comprise magnetic members and conductor lines formed inside the magnetic members respectively. The capacitor layer comprises a dielectric member and first and second internal electrodes which are provided within the dielectric member to be opposite to each other. First and second external electrodes are provided on first and second opposite end surfaces of the laminated structure, while a third external electrode is formed on at least one of first and second opposite side surfaces. First ends of the conductor lines provided in the first and second inductor layers are connected to the first and second external electrodes respectively, while second ends of the conductor lines are electrically connected with each other through the second internal electrode provided in the capacitor layer.

Abstract: An LC filter includes a dielectric base plate having throughholes, and pluralities of first and second inductance conductors are formed on the both main surfaces of the dielectric base plate, respectively. The respective first and second inductance conductors are paired by being electrically connected through the througholes and, thereby a plurality of inductors are formed. A capacitor is formed by first and second capacitance electrodes which are formed on both main surfaces of the dielectric base plate at positions opposing each other. The plurality of inductors and the capacitor are suitably connected. First and second additional electrodes are formed on both main surfaces of dielectric base plate at positions opposing each other so that a capacitor for trimming is formed by the additional electrodes. The capacitor for trimming is connected in parallel with at least one of the plurality of inductors.

Abstract: A thin-film, lumped element filter utilizing spiral inductors and capacitive pi networks is disclosed. The filter is fabricated from a planar dielectric substrate having a ground plane on one side thereof and two thin-film metal layers and an insulation layer disposed therebetween on the opposite side of the dielectric substrate. The metal and insulation layers are configured to form one or more capacitive pi networks and spiral inductors, which are electrically interconnected to form the filter.

Abstract: A distributed constant type noise filter and method of making same is provided. The filter includes a first foil conductor disposed to conduct electrical current with first and second lead wires connected near each end thereof, a second foil conductor disposed to be connected to ground potential having a third lead wire connected near one end thereof, and a plurality of dielectric sheets disposed between said first and second foil conductors. This sandwich is wound generally into a tubular form with said first and third lead wires being close to each other and shifted by approximately 1/4 to 3/4 of a turn. The second lead wire is arranged substantially in-line with said first and third lead wires after the tubular wound filter is compressed into substantially an elliptical shape. Alternately, the sandwich is wound generally into a tubular form with said third lead wire being close to said first lead wire but separated therefrom by substantially 2.5% of the distance between said first and second lead wires.

Abstract: Four-terminal type noise filter having a first strip-like conductor with first inner and outer input/output leads each connected to the first conductor adjacent each end, a second strip-like conductor with second inner and outer input/output leads each connected to the second conductor adjacent each end, and dielectric sheets superimposed on the respective strip-like conductors. The sandwich of conductors and dielectric sheets are rolled into a flat tube such that the first and second inner leads defines a set of input and output terminals and said first and second outer leads defines another set of input and output terminals. The filter positively minimizes noise received by the filter without creation of ringing.

Abstract: A planar filter assembly 12 is comprised of a generally planar inductive member 14 having upper and lower surfaces 16, 18 and a plurality of terminal receiving apertures 22 extending therethrough and a plurality of pairs of capacitors 44, 46, one capacitor pair being at respective ends of each aperture 22; whereby each the pair of capacitors 44, 46 and said inductive member therebetween forms a pi-network filter for an electrical terminal member 48 inserted into aperture 22. The capacitors 44, 46 are formed on the upper and lower surfaces 16, 18 of the inductive member by disposing a series of layers of materials on the surfaces. The first layer 24 comprises an electrically-conductive material disposed on first selected locations of upper and lower surfaces 16, 18, the first conductive coating being spaced from apertures 22 and including the ground electrode portions 25 for the capacitors 44, 46.

Abstract: A distributed constant type noise filter and method of making same is provided. The filter includes a first foil conductor disposed to conduct electrical current with first and second lead wires connected near each end thereof, a second foil conductor disposed to be connected to ground potential having a third lead wire connected near one end thereof, and a plurality of dielectric sheets disposed between said first and second foil conductors. This sandwich is wound generally into a tubular form with said first and third lead wires being close to each other and shifted by approximately 1/4 to 3/4 of a turn. The second lead wire is arranged substantially in-line with said first and third lead wires after the tubular wound filter is compressed into substantially an elliptical shape. Alternatively, the sandwich is wound generally into a tubular form with said third lead wire being close to said first lead wire but separated therefrom by substantially 2.5% of the distance between said first and second lead wires.

Abstract: A chip type LC composite component mounted directly on a wiring pattern on a printed substrate and suitable for use as a noise filter, comprising; a dielectric bobbin comprising a coil winding portion and first and second flanges provided at both ends thereof; first and second electrodes provided on one main surface of the first flange and spaced at a predetermined interval; a third electrode provided on the one main surface of the second flange, and a coil wound around the coil winding portion and connecting at one of a pair of lead terminals of said coil with the first electrode and at the other with the third electrode, so that said coil forms an inductor between the first and the third electrodes and a capacitor connected to one end of the inductor and provided between the first and the second electrodes spaced at the predetermined intervals, thereby having a superior filter characteristic when used as a noise filter.

Abstract: A chip-like LC filter which comprises a cylindrical magnetic element having a through hole, a cylindrical capacitor element having a through hole and terminal electrodes formed on inner and outer peripheral surfaces thereof, and a central conductor inserted in the through holes of the magnetic element and the capacitor element aligned in the axial direction. The terminal electrode on the inner peripheral side of the capacitor element is electrically connected with the central conductor. Flange-shaped external terminal members are respectively provided on both end portions of the central conductor, so that the magnetic element and the capacitor element are located between the external terminal members.

Abstract: A filter connector for attentuating electromagnetic interference up to 1000 MHz having a housing, a filter element enclosed within the housing and electrically conductive pins mounted within the filter element. The filter element contains an alumina substrate with thick film layers of a metallization forming pin and ground electrodes, and a dielectric layer separating the electrodes screen printed over the substrate and a glass encapsulant. The ground electrode extends to the periphery of the substrate and is continuous except for clearance holes at the locations of pins.

Abstract: A filter connector comprises a connector body which includes a conductive shell and an insulating insert provided in the conductive shell and having a plurality of through holes. First ends of upper first terminal pins are inserted in the through holes of the insert. Second ends of the first terminal pins pass out the back of the connector body. At least one of the plurality of terminal pins is adapted to support a printed circuit board. The printed circuit board has a conductive pattern which is electrically connected with at least one of the upper first terminal pins. A second terminal pin is electrically connected to the conductive pattern, whereby the second terminal pin is electrically connected with at least one of the first terminal pins. A plurality of filter elements are inserted in a current path between at least one of the first terminal pins and the second terminal pin.

Abstract: A three terminal filter according to the present invention has a hot lead terminal provided with substantially U-shaped holding portions and a plate capacitor arranged between a pair of magnetic cores.

Abstract: A three-terminal type noise filter has a lead terminal of substantially U-like shape, two magnetic substance cores and a rectangular-plate-like-shaped capacitor which have surfaces which are parallel, the cores being inserted onto both legs of the lead terminal, the capacitor being disposed between the two magnetic substance cores, so that both the cores regulate movement of the capacitor, thereby improving positioning accuracy for the lead terminal and capacitor and raising the reliability of the filter characteristic. Also, one electrode of the capacitor and the head of the lead terminal are electrically connected with each other, a ground lead terminal connected to the other electrode of the capacitor is positioned between the two legs of the lead terminal, and the capacitor is disposed between the cores, thereby enabling the filter to be made small-sized as a whole.

Abstract: An LC composite component of the combination of a coil inductor and a capacitor, in which a bobbin having first and second flanges formed at both ends of a coil winding portion is provided on at least one of the flanges with first and second lead-out electrodes, and both lead-out terminals of the coil wound around the coil winding portion being connected to the first and second lead-out electrodes. The flanges provided with the first and second lead-out electrodes is made from a dielectric material. A ground electrode is provided on the flange between both the electrodes, and capacitors are formed between the first lead-out electrode and the ground electrode and between the second electrode and the ground electrode. Thus, the combination of the capacitor and coil inductor is small and easy to produce.

Abstract: On an upper surface of a substrate (20) a band-pass filter (29) is provided, and on the opposite (lower) surface of a substrate (20) a low-pass filter comprising a conductive layer pattern (27) and capacitors (22,23) is provided, wherein a conductive layers (27) are provided on substantially the entire area of the upper surface excluding portions for terminals and on the lower surface excluding portions for the low-pass filter and the terminals, and by connecting both conductive layers by means of a row of through-hole connections, the input terminal (24) and the output terminal (25) are shielded from each other.

Abstract: A high frequency coil arrangement, comprising an input side coil and an output side coil electromagnetically coupled with each other, the input side coil being divided into two coil elements having substantially equal inductances by provision of a tap, characterized in that two parallel tuner capacitors are provided for the two coil elements for providing two tuner circuits of equal frequencies, and that a further separate capacitor is provided and connected with both ends of the input side coil for adjustment of its tuning frequency.

Abstract: A resonator comprising an equivalent circuit including an LC series circuit having a first capacitance element and inductance elements connected in series to both sides of the first capacitance element, and a second capacitance element connected parallel to the LC series circuit. A plurality of resonators having this construction may be magnetically connected in series to provide a filter, by utilizing the two inductance elements constituting parts of the resonator and without necessitating separate coupling members such as capacitors or coils.

Abstract: An avionics housing has electrical equipment within it connected to an electrical connector by means of a flexi-rigid assembly having multiple conductive tracks extending side-by-side on an insulating layer. Radio frequency interference between the connector and the equipment is reduced by forming the flexi-rigid assembly into one or more loops about a ferrite block which absorbs radio frequency on the conductive tracks. The housing may have several blocks of different materials which absorb radiation of different frequency ranges. Additionally, the assembly may be wound about a plastics block to form an air-cored coil for absorbing higher frequencies. Where only higher frequencies are to be absorbed, the air-cored coil may take the place of the ferrite block. The flexi-rigid assembly also includes a capacitor assembly in the form of two conductive layers extending across opposite side of the conductor tracks and insulated therefrom.

Abstract: An LC composite component employing a ceramic sintered body obtained by laminating pluralities of magnetic green sheets and dielectric green sheets and cofiring the same. The ceramic sintered body is provided therein with a magnetic region and a dielectric region along the direction of thickness. The magnetic region of the sintered body is provided with at least one inner electrode layer which extends to first opposite side surfaces of the sintered body, thereby to define an inductance unit. The dielectric region is provided with a plurality of electrodes oppositely arranged through the dielectric substance, which plurality of electrodes includes first and second electrodes. A pair of first outer electrodes are formed on the first side surfaces of the sintered body, to be electrically connected with the inner electrode formed in the magnetic region.

Abstract: A sealed filter member comprises a filter body means having selected first and second surface portions, the first surface portions defining discontinuities between and surrounding the second surface portions; a dielectric polymerizable material polymerized on and adhered to the selected first surface portions defining sealed surface portions and plating material disposed on the second surface portions defining plated surface portions. The plated surface portions comprise electrically discontinuous electrode means. The polymerized dielectric material both excludes plating material from the sealed surface portions during plating and permanently seals the filter body means at the sealed surface portions. The polymerized dielectric material is resistant to solder and solvents and excludes solder and solvents from the sealed surface portions. A process for making the sealed filter members is also disclosed.

Abstract: A loss-impaired filter apparatus for suppressing radio frequency interference on a two-wire line. The apparatus includes a coil unit (10) comprising two coils (e.g. 3a) in the form of printed circuits on either side of an insulating plate (2), a ferrite casing (10a, 10b) surrounding the coil unit (1), there also being two capacitors (15a, 17a, 15b, 17b), the coatings of which are arranged at least practically parallel to the insulating plate (2) on two surfaces of the ferrite elements facing away from each other and facing away from the coil unit (1). Each of the coil conductors is situated directly opposite the other coil conductor along its entire length. The coating (15a, 15b) situated nearest the coil unit (1) in each capacitor is provided with an earth terminal (e.g. 16a) and the other coating (17a, 17b) in each capacitor is connected to the inner end point of the coil (e.g. 3a) situated nearest to the coating.

Abstract: A microwave bandpass filter for frequencies in the range of 30-3000 MHz comprises a substrate formed from dielectric ceramic sheets fused together and stacked according to a dielectric constant required of the filter capacitors, the plates of which are formed on the substrate. Discrete air core coils, to provide greater frequency selectivity in this particular frequency range, are attached into the circuit on a top surface of the substrate, and a drawn metal can covers the circuitry on the top surface and is soldered to a metallized coating extending over substantially all of the rest of the substrate except for surface mounting lead portions and associated conductive paths. Thus, EMI and RFI shielding is provided by the combination of the metal can and the ground plane of the circuit.

Abstract: A radio frequency signal coupler includes first and second conductors formed on an insulating body for coupling signals between respective input and output couplings. A series resonant circuit is formed on the insulating body between the first and second conductors for shunt attenuating interfering signals. The series resonant circuit includes a capacitance part that also functions as a protective spark gap.

Abstract: This disclosure is directed to an improved LC filter which includes a cylindrical ferrite member of a semi-conductor material formed with an inner bore which axially extends through its central portion, and having its grain boundary and/or at least its outer peripheral surface formed into an insulating layer, an electrode provided at least on the outer peripheral surface of the cylindrical ferrite member, and a through-conductor inserted into the inner bore of the cylindrical ferrite member.

Abstract: A modular jack for telephones in which bypass capacitors have been connected to the leads so as to bypass noise and other high frequency signals. End mounted ceramic capacitors extend from the leads to a ground plane which is provided with flexible fingers and which is connected to a suitable ground so as to provide a grounding contact for the capacitors.

Abstract: A filter connector for attenuating frequencies up to 1000 MHz having a conductive housing enclosing a planar filter element. Rows of conductive pins and associated capacitors are mounted on the filter element and there is a ground plane over one or both surfaces of the filter element. The pins pass through holes in each ground plane without touching it.

Abstract: An improved electrical filter device which is so arranged that a low-pass filter having a spurious wave eliminating function is formed into a compact size so as to be incorporated into a dead space within the filter device, while at the same time, high frequency characteristics of said low-pass filter itself are improved, without deteriorating characteristics of the filter device in which the low-pass filter is to be incorporated.

Abstract: A noise filter wherein a glass plate is fixedly provided in hermetic condition in a metal casing through which a central conductive member passes, a magnetic core is inserted into said central conductive member at one side of said glass plate, a pair of capacitors are respectively passing through the central conductive member at the side of said magnetic core and at the other side of said glass plate, and an insulative resin is filled at least in the opening side of the metal casing.

Abstract: A single-winding capacitive filter having two metal layers separated by a dielectric and forming a plurality of capacitors having at least one common wound layer. One of the metal layers protrudes from one end of the wound layer at least for a certain number of turns whose protruding portions are electrically interconnected by a short-circuit. The short-circuiting of one of the wound layers reduces the self inductance of the filter.

Abstract: A resonator filter has electrodes disposed in a confronting relationship to each other and has a dielectric base plate interposed therebetween. The filter has ground or common terminals on the electrode portions in different positions which do not include mutually confronting electrode portions. The electrodes have spiral configurations or configurations having at least one bent portion such that the electrodes have a lumped-constant inductance. Voltage signals induced in the electrodes due to mutual induction therebetween are opposite in phase with respect to each other and a parasitic distributed-constant capacitance is produced due to a potential difference between the electrodes and a dielectric constant of the dielectric base plate. As a consequence thereof, a two-terminal parallel resonance band pass filter circuit is formed on an equivalent basis which is composed of the lumped-constant inductance of one of the electrodes and the distributed-constant capacitance between the electrodes.

Abstract: An electric element, utilizing a capacitive enclosure of a mobius strip and the spacial phenomenon thereof, to measure voltage and phase differences of input signals or to act as a filter to attenuate current flow of a resonant frequency and the harmonics of that frequency while passing intermediate frequencies.

Abstract: A noise reduction filter which comprises a block of magnetizable material, and first and second laminated capacitors each having first and second terminal electrodes opposite to each other. The first and second capacitors are mounted on one surface of the block with the second terminal electrodes of the respective first and second capacitors spacedly confronting with each other. The filter also comprises a first electrode member partially extending through the block with its opposite end portions connected to the first terminal electrodes of the respective first and second capacitors, and a second electrode member mounted on the block with a portion thereof electrically connecting the second terminal electrodes of the respective first and second capacitors together.

Abstract: A three or four terminal noise filter and a method of making the same is disclosed. A pair of conductive bands are wound in a spiral manner with a thin insulating separator therebetween. The first conductive band is made of either electrically or electromagnetically conductive foil to form an inductance between terminals coupled to both ends of such foil. The first conductive band also provides capacitance distributed over its entire length between itself and the second conductive band. The second conductive band is made of electromagnetically conductive foil, such as an iron foil. The noise filter can be made by rolling the sandwich of conductive bands and insulators longitudinally.

Abstract: A leadless filter component for printed circuits comprises a monolithic ceramic capacitor chip having a ceramic nonconductive outer surface and at least two conductor terminals formed on said outer surface. An inductance including a bobbin and a conductor wound on the bobbin has the bobbin secured to the outer surface of the capacitor chip with the two ends of the conductor being electrically secured to said terminals to form a component having inductive and capacitive reactance.

Abstract: A noise filter (17) comprising a plurality of cylindrical capacitors (12) having a throughgoing hole (13) for receiving a connection pin (20) of a connector (18). The inner peripheral surface of each cylindrical capacitor (12) is formed with an inner electrode (14) for electric connection to the connection pin. The outer peripheral surface of the cylindrical capacitor (12) is formed with an outer electrode (15). The plurality of cylindrical capacitors (12) are bunched with their outer peripheral surfaces contacting with each other, their outer electrodes being electrically connected together.

Abstract: A chip-shaped laminated electronic part including at least one inductor, which comprises a plurality of sheets of an insulating material, and electrically conductive patterns each formed on the surface of each said sheets, said patterns being so connected to form one or more coils to provide at least one inductor. The electronic part is monolythic and is produced by using printing technique whereby wire-winding operation is eliminated.

Abstract: An improved through-type capacitor for use in electrical and electronic equipment which includes a metallic housing having upper and lower openings through a stepped portion, a capacitor element accommodated in the upper opening and further including a disc member with a central bore and electrodes provided on its opposite surfaces, a central conductor inserted through the central bore of the disc member so as to be secured for being electrically connected to one of the electrodes, with the other of the electrodes being electrically connected to the stepped portion of the housing, an electrically insulating support plug extended through by the central conductor and fixed to the lower opening, and resin material filled in the upper opening of the housing.

Abstract: A disc type composite part for use in electrical and electronic equipment which includes a disc substrate of ceramic dielectric material having a through-opening formed at its central portion, a first electrode and a second electrode respectively provided adjacent to the outer periphery and around the through-opening on one surface of the substrate, a third electrode provided on the other surface of the substrate, a shortcircuiting member for selectively shortcircuiting the third electrode with the first or second electrode, resistor elements connected for bridging between the first and second electrodes so as to extend over the one surface of the substrate without following the diametrical direction of the substrate, and an electrically insulating covering layer formed at least on the one surface of the substrate.

Abstract: An RC network is disclosed in which two electrically conducting regions and a dielectric lying between these regions form a capacitor. At least one of the electrically conducting regions consists of resistance material and is designed in the shape of a meandering path. This network can be balanced while still guaranteeing a uniform region distribution of the resistance and the capacitance, by means of a laser beam. Upon a carrier of heat-resistant material, a resistance layer, a dielectric of glow discharge polymer, and an opposite electrode capable of regeneration, are applied. The dielectric completely covers the resistance layer with the exception of contact pads.

Abstract: At least one conductive element combined with a magnetic absorbing mixture surrounding at least part of the conductor has a composite structure: a core is formed by a filament or fiber (rayon, nylon, glass) and a conductive coating (metal or metallic glass). There is so provided a high resistance element, with good mechanical properties and a great absorption of high frequencies.Applications: antiparasitic cables for ignition of internal combustion engines, instrumentation and low-pass cables, coaxial cables, shields and screens.

Abstract: A multiple contact filter connector capable of accommodating high RF currents and a method of manufacturing the same are disclosed. The connector includes an outer metallic shell, a dielectric body within the shell and at least one network filter contact assembly. The inner body has at least one through channel and a transverse cavity which communicates with the channel and an annular metallic ring disposed inwardly of the shell. The network filter contact assembly has a ground electrode and a pin electrode and is disposed within the portion of the channel bridging the cavity. Conductive curable filler material is charged into the cavity around and in contact with the ground electrode and annular ring to form a ground plate for the connector. A pair of spaced apart conductive plates may be disposed transversely to the ground electrode and ring to be in electrical contact therewith and the filler material.

Abstract: A filter connector which is capable of conducting high RF currents and which affords removal of its contact members without damage to its filter networks includes an outer metallic shell, an inner body within the shell having a plurality of through channels, a ground plate, a hollow tubular filter network in each channel, and a contact member within each network. Each filter network comprises a plurality of tubular filter elements which are axially aligned, contiguous, and adhere together, an outer conductive coating covering an external portion of at least one of the elements forming a ground electrode and an inner conductive coating on the interior surface of at least one of the elements forming a pin electrode. The filter networks are fixed to the ground plate which is of substantial width dimension to accommodate high RF currents and dissipate the heat generated thereby and for being closely adjacent the filter ground electrodes for coupling thereto.

Abstract: A passive circuit element for influencing pulses has two series-connected inductances which connect a first input terminal to a first output terminal, a first capacitor which is connected between the connection point of the inductances and the second terminals which are either directly connected to one another or which coincide with one another. The inductances are formed by spiral conductor paths which are arranged on a substrate and which are oppositely directed to one another. The spiral conductor paths are arranged concentrically above one another in two different conductor path layers which are separated by an insulating layer. The inner ends of the spiral conductor paths are connected by means of a contact extending through the insulating layer and to which a plate of the first capacitor is also connected.

Abstract: This disclosure relates to an EMI (Electro Magnetic Interference) filter connector which can be installed in the line between mating plugs and sockets normally used for terminating multiple conductors. This connector is used in an electronic equipment chassis or at a bulkhead junction box or, if necessary, between mating connectors in a cable run, where the metallic parts of the cable connector can be grounded. Conductive rubber or co-polymer elastometric washers are used to protect RF filter components in the connector from damage due to external stress. A high degree of EMI attenuation is provided by an integral metallic baffle having close fitting conductor holes which is located within the connector body.

Abstract: A wound multi-capacitor filter for suppressing R.F. interference signals on power lines is formed by winding into a roll a floating sheet electrode that is sandwiched between two dielectric layers, a pair of spaced equal area sheet electrodes and another electrode being in contact with the outer surfaces of the sandwiching dielectric layers. The pair of electrodes are connected to two power lines that deliver energy to a device such as a motor, while the other electrode is connected to a grounded terminal. This filter provides either a reduction in AC leakage or an improvement in noise attenuation or both compared to a conventional delta-connected filter.