Class / Patent application number | Description | Number of patent applications / Date published |
333185000 |
Having significant physical structure
| 168 |
333175000 |
Resonant, discrete frequency selective type
| 108 |
333181000 |
Smoothing type (e.g., direct current power supply filters or decoupling filters)
| 67 |
333174000 |
With variable response
| 57 |
333172000 |
RC or RL type
| 31 |
333177000 |
Transformer coupled
| 28 |
333168000 |
Including recurrent sections
| 14 |
333173000 |
Synchronous filters | 4 |
20100066465 | DOWN CONVERSION FILTER - A down conversion filter with a plurality of sampling capacitor, wherein at least one sampling capacitor is discharged in sampling phases or charge-summing phases of the other sampling capacitors. | 03-18-2010 |
20100308935 | SWITCHED-CAPACITOR BAND-PASS FILTER OF A DISCRETE-TIME TYPE, IN PARTICULAR FOR CANCELLING OFFSET AND LOW-FREQUENCY NOISE OF SWITCHED-CAPACITOR STAGES - A band-pass filter made up by an operational amplifier and by an input circuit. The input circuit is formed by a capacitive filtering element, connected to the input of the operational amplifier; a coupling switch, coupled between an input node and the capacitive filtering element; a capacitive sampling element, coupled between the input of the filter and the input node; and a sampling switch, coupled between the input node and a reference-potential line. The coupling switch and the input sampling switch close in phase opposition according to a succession of undesired components sampling and sensing steps, so that the capacitive sampling element forms a sampler for sampling the undesired component in the undesired components sampling step, in the absence of the component of interest, and forms a subtractor of the undesired components from the input signal in the sensing step. | 12-09-2010 |
20110187480 | LOSSY TRIPHASE LOW-PASS FILTER - The invention relates to a lossy triphase low-pass filter ( | 08-04-2011 |
20130285767 | SWITCHED-CAPACITOR BAND-PASS FILTER OF A DISCRETE-TIME TYPE, IN PARTICULAR FOR CANCELLING OFFSET AND LOW-FREQUENCY NOISE OF SWITCHED-CAPACITOR STAGES - A band-pass filter made up by an operational amplifier and by an input circuit. The input circuit is formed by a capacitive filtering element, connected to the input of the operational amplifier; a coupling switch, coupled between an input node and the capacitive filtering element; a capacitive sampling element, coupled between the input of the filter and the input node; and a sampling switch, coupled between the input node and a reference-potential line. The coupling switch and the input sampling switch close in phase opposition according to a succession of undesired components sampling and sensing steps, so that the capacitive sampling element forms a sampler for sampling the undesired component in the undesired components sampling step, in the absence of the component of interest, and forms a subtractor of the undesired components from the input signal in the sensing step. | 10-31-2013 |
333170000 |
Bridge type | 4 |
20100188168 | WIDE BAND FILTER STRUCTURE - Provided is a wide band filter structure including two coupling units and one bridge unit. Each of the coupling units has a joint. The joint is concentrically encircled by a spiral with two ends. One of the ends of the spiral is positioned at the joint. The bridge unit is connected to between the two spirals by the other ends thereof, respectively. The wide band filter structure achieves high impedance, prevents wide band Delta-I noise, improves electromagnetic interference (EMI) and electromagnetic compatibility (EMC), and reduces cost when used in related layout of printed circuit boards and IC package substrates. | 07-29-2010 |
20110227669 | METHOD AND APPARATUS FOR CABLE EMULATION - A cable emulator configured to emulate the electrical transfer function and properties of a length of conductive cable is disclosed for use in transmitter, receiver and transceiver operation without need for long and expensive length of actual cable. The cable emulator includes an input port for connection to a signal source, such as a transmitter and an output port for connection to a receiver or other signal analyzer. The input port connects to an input impedance matching element, which in turn connects to one or more filter stages. The output of the one or more filter stages connects to an output impedance matching element, which then connects to the output port. The one or more filter stage comprises one or more to resistors, one or more inductors and one or more capacitors. | 09-22-2011 |
20140022030 | SIGNAL TRANSMISSION CIRCUIT AND SIGNAL TRANSMISSION CELL THEREOF - An exemplary embodiment of the present disclosure illustrates a signal transmission cell having a first through third conductors, a capacitor and an inductor. The first and third conductors form a first transmission circuit, and the second and the third conductors form a second transmission circuit. Signals which are respectively conveyed on the first transmission circuit and the second transmission circuit have the same magnitude, but have the opposite phases to each other, so as to form a pair of differential transmission lines. A first end of the inductor is electrically connected to the third conductor, and a second end of the inductor is electrically connected to a ground voltage. A first end of the capacitor is electrically connected to the first end of the inductor, and a second end of the capacitor is electrically connected to the second end the inductor. | 01-23-2014 |
20150349739 | COMMON MODE NOISE SUPPRESSING DEVICE - An all-pass filtering module of a common mode noise suppressing device includes first and second differential transmission circuits coupled to a reference node. Each of the first and second differential transmission circuits has an input terminal and an output terminal, and includes: first and second capacitive elements coupled in series between the input terminal and the output terminal; a first inductor coupled between the input terminal and the output terminal; and a third capacitive element and a second inductor coupled in series between the reference node and a common node between the first and second capacitive elements. | 12-03-2015 |
333169000 |
Wheatstone or lattice type | 1 |
20090251234 | COMPLEX RESONANCE CIRCUIT | 10-08-2009 |
Entries |
Document | Title | Date |
20080290966 | ADAPTIVE RADIO TRANSCEIVER WITH FILTERING - An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims. | 11-27-2008 |
20080309429 | MONOLITHIC INTEGRATED INDUCTOR - A monolithic integrated inductor and a method for configuring the monolithic integrated inductor are provided. The monolithic integrated inductor includes a first coil having a first inductance value, at least one second coil connected in parallel to the first coil and having a second inductance value to form a total inductance, and lines to the first coil and to the second coil. The first coil has at least two first loops spaced at a distance with a path width. The second coil has at least two second loops spaced at the distance with the path width. The first loops form a magnetic coupling, and the second loops form a magnetic coupling. | 12-18-2008 |
20080315970 | Filter with a Fuse, for Use in a Lamppost - It is disclosed that a lamppost ( | 12-25-2008 |
20090066445 | Axial Dielectric Component Array And Method - An embodiment of the invention may be made in the form of an electromagnetic filter for use with a feed-through conductor. A dielectric component, for example a varistor or a chip capacitor, may be positioned proximate the feed-through conductor such that the dielectric component may filter a signal carried by the feed-though conductor. A first end of the dielectric component may be electrically connected to the feed-through conductor. The filter may also include a housing, a substrate, or both and a second end of the dielectric component may be electrically connected to such housing and/or substrate. The invention may also be embodied as a dielectric array, which may include one or more dielectric components arranged around the periphery of an orifice on a substrate. The orifice may be configured to allow a feed-through conductor to pass therethrough, and a first end of one or more dielectric components may be capable of being electrically connected to such feed-through conductor. | 03-12-2009 |
20090121805 | LOW-LEAKAGE EMC FILTER - EMC filter, connectable between a supply network and an electric operated appliance to reduce conduction noise between said supply network and said appliance, comprising one voltage regulator having an output terminal whose potential is kept close to the earth potential, in order to reduce the voltage drop, at mains frequency, across a “Y” capacitor or an active shunt module. In this way the leakage current to earth is sensibly reduced. The device of the invention is especially useful in corner-earthed three-phase lines or in conjunction with RCD devices. | 05-14-2009 |
20090128258 | EMI filter with an integrated structure of common-mode inductors and differential-mode capacitors realized by flexible printed circuit board - An integrated structure of common-mode inductors and differential-mode capacitors in an EMI filter realized using a flexible circuit board, including: a closed magnetic circuit formed by a first magnetic core and a second magnetic core, optionally including an air gap formed in a middle pillar of the magnetic cores, and with a flexible printed circuit board (FPC) wound on at least one pillar, the FPC formed by laminating alternating insulating and copper foil layers. The integrated structure of inductors and capacitors is advantageous in reducing the volume of the EMI filter and improving the power density of an electronic power transformer. | 05-21-2009 |
20090140826 | Axial Dielectric Component Array With Retention System And Method Of Assembly - An electromagnetic filter, which may include a feed-through conductor. The feed-through conductor may have an integral extension for contacting an electrically conductive clip. The clip may have an extension-engaging portion to contact the extension and a dielectric component-contacting end to contact a dielectric component. The dielectric component may be, for example, a varistor, a chip capacitor, or the like, capable of affecting a signal carried by the feed-through conductor. The dielectric component may be proximate to the feed-through conductor and may be oriented such that a primary dimension of the dielectric component is substantially parallel to the feed-through conductor. Another embodiment may include a bus. The invention may also be embodied as methods for assembling electromagnetic filters. | 06-04-2009 |
20090153266 | Modulized wave filter - A wave filter includes a circuit board, and a shell housing the circuit board; the circuit board includes a band-pass wave-filtering circuit, and a low-pass wave-filtering circuit; the shell has an input end and an output terminal thereon, which are connected to the band-pass wave-filtering circuit of the circuit board; the shell further has an output end thereon, which is connected to the low-pass wave-filtering circuit; thus, the wave filter is modulized; the wave filter is fitted in a multimedia wideband router, and in turn it is not necessary to change wave filters in order for allowing the multimedia wideband router to be connected to and used with televisions or various digital multimedia equipments. | 06-18-2009 |
20090206949 | Electrical waveform adjuster - An object of the present invention is to provide an electrical waveform adjuster capable of adjusting various voltage waveforms supplied to an electric apparatus to improve an operation capability of the electric apparatus, and also, to provide an electrical waveform adjuster capable of mitigating physical harmful effects on a user of the electric apparatus. | 08-20-2009 |
20090243754 | INTEGRATED CIRCUIT - In an integrated circuit having a number of circuit units on a single semiconductor chip, particularly in a system-on-chip integrated circuit including an integrated transceiver, interference between the circuit units is suppressed using on-chip resonant elements. Each resonant element has at least one on-chip capacitor and at least one on-chip conductive line constituting an inductance. The capacitance-inductance combinations are arranged to be resonant at one or more frequencies at which radio frequency energy is generated by the circuit units. The capacitive part of each series resonant combination is formed as a plurality of capacitor elements forming in an array to minimise self-inductance. Also disclosed is a filtering arrangement in which each circuit unit is individually supplied from the tap of a series resistive-capacitance combination to provide low-pass filtering. The resistance of such a combination may be configured as an FET to allow the circuit unit to be individually powered down to a low leakage state. | 10-01-2009 |
20090278624 | REFLECTION-TYPE PHASE SHIFTER HAVING REFLECTION LOADS IMPLEMENTED USING TRANSMISSION LINES AND PHASED-ARRAY RECEIVER/TRANSMITTER UTILIZING THE SAME - A reflection-type phase shifter is provided. The reflection-type phase shifter has a coupler, a first reflection load, and a second reflection load. The coupler has an input port for receiving an input signal and an isolated port for outputting an output signal due to a first reflected signal at a through port and a second reflected signal at a coupled port. The first reflection load reflects the first fraction of the input signal to thereby generate the first reflected signal. The second reflection load reflects the second fraction of the input signal to thereby generate the second reflected signal. In addition, at least one of the first and second reflection loads is equivalent to a transmission line. | 11-12-2009 |
20090315642 | MOULDED CABLE TRAPS - An overmoulded cable trap (302) for improved performance of an RF trap (102) is disclosed, wherein the RF trap (102) is placed on a section of an electrical cable (104) and fixed in position by overmoulding a thermoplastic material over both the RF trap (102) and the section of the electrical cable (104). The overmoulded cable trap (302) disclosed herein provides an RF trap (102) that has better shock protection, increased resistance to moisture, improved smoothness, is easier to handle and clean, is cheaper, can be created in very small packages where space is limited, can be easily sized to a range of diameters and lengths, is more reliable with respect to maximum rated voltage and less electromagnetic coupling to the environment, and generates less heat, than other designs of RF traps. | 12-24-2009 |
20100090781 | SHEET-LIKE COMPOSITE ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING SAME - To provide a configuration including a first sheet substrate, on which a first thin film electronic component is formed on at least one main face, and an external connection terminal for connecting to an external circuit is formed one main face or the other face; a second sheet substrate, on which a second thin film electronic component is formed on at least one face; an insulator connection resin layer for fixing the first sheet substrate and the second sheet substrate opposing the first thin film electronic component against the second thin film electronic component; and an interlayer connection conductor for electrically connecting electrode terminals, which have been set in advance, of the first thin film electronic component and the second thin film electronic component. | 04-15-2010 |
20100156560 | FILTER CIRCUIT AND COMMUNICATION DEVICE - There is provided a filter circuit that includes a flying capacitor and a capacitor that is provided in parallel with the flying capacitor, between an input terminal and an output terminal of the flying capacitor. As the capacitor that has a predetermined capacity is provided between the input terminal and the output terminal of the flying capacitor, it is possible to provide steep attenuation characteristics in the filter circuit provided with the flying capacitor. | 06-24-2010 |
20100194497 | MANAGEMENT OF ACTIVE ELECTRONS - The present patent application is the product of a thorough study of the management of electrons, which, by nature, have a double personality: the corpuscular aspect, and the undulatory aspect, and which are known as radiant electrons because they escape from electric wires and cause operational disruptions. These radiant and inoperative electrons disrupt the active electron activity that manages the original signal. The optimal measurement is the sound revealing the intermodulational distortions in real time, whereby the temporal distortions of the electric activities can be calibrated. This diagnostic enables definition and calibration of the time and amplitudinal values of these electrical forces, which have electron voids. This alternation of electron voids disrupts the linearity of movement and creates vibration. In electroacoustics, it adds sound pulses, thereby adversely affecting proper sound reproduction. The devices eliminate electron pollution, thereby enabling the electrical charges of the batteries to be doubled while reducing computer overheating. The devices are suitable for use in the world of electricity in general, lighting and all electrical machines, as well as computers and control computers for on-board management processes. The method and devices generate a new active electric current in real time (RTE) which is dependent not on the rectification modulation but on the actual position of the non-agitated electrons. | 08-05-2010 |
20100283554 | CIRCUIT CONFIGURATION FOR ELIMINATING EMC INTERFERENCE - A circuit configuration is disclosed for eliminating EMC interference, and a device includes such a circuit configuration, where a damping member is connected to at least one supply line leading to the consumer or consumers. In at least one embodiment optimal elimination of EMC interference of the electrical consumer or consumers is ensured, and overloading the power supply grid is avoided. To this end, in at least one embodiment the damping member is connected in series with a current-limiting element and can be connected to the consumer in parallel. It is thus possible to compensate for the effect of the current-limiting element and short-circuit said element for the operating state by way of a switch, whereby the element does not cause any loss of power outside of the power circuits and nevertheless has a current-limiting, that is, grid-friendly, effect during the power-up and charging process. | 11-11-2010 |
20120161900 | ELECTRONIC DEVICE - An electronic device includes a shielding member, an electric circuit, and a filter capacitor. The electric circuit has an output line and is arranged inside the shielding member. The filter capacitor is arranged outside the shielding member to be connected to the output line. | 06-28-2012 |
20120262250 | SHIELDED THREE-TERMINAL FLAT-THROUGH EMI/ENERGY DISSIPATING FILTER - A shielded three-terminal flat-through EMI/energy dissipating filter includes an active electrode plate through which a circuit current passes between a first terminal and a second terminal, a first shield plate on a first side of the active electrode plate, and a second shield plate on a second side of the active electrode plate opposite the first shield plate. The first and second shield plates are conductively coupled to a grounded third terminal. In preferred embodiments, the active electrode plate and the shield plates are at least partially disposed with a hybrid flat-through substrate that may include a flex cable section, a rigid cable section, or both. | 10-18-2012 |
20140340170 | GFCI Compatible System and Method for Activating Relay Controlled Lines Having a Filter Circuit Between Neutral and Ground - A GFCI compatible system and method for activating relay controlled lines having a filter circuit between neutral and ground is described herein. Specifically the disclosure teaches a GFCI compatible system for reducing CMN. A CMN Suppressor can comprise a hot line, a neutral line, and a ground line. The first ends of the hot line, the neutral line, and the ground line can be connected to a GFCI protected hot node, a GFCI protected neutral node, and an electrical ground. The second ends of the hotline, the neutral line, and the ground line can be connected to a CMN sensitive device hot line, a CMN sensitive device neutral line, and a CMN sensitive device ground line. The system can further comprise a high pass filter, a hot line relay contact, a neutral line relay contact, a hot line relay, and a neutral line power relay. | 11-20-2014 |
20150310977 | DISTRIBUTED GAP INDUCTOR FILTER APPARATUS AND METHOD OF USE THEREOF - The invention comprises a high frequency inductor filter apparatus and method of use thereof. In one embodiment, an inductor is used to filter/convert power, where the inductor comprises a distributed gap core and/or a powdered core material. The inductor core is wound with one or more turns, where multiple turns are optionally electrically wired in parallel. In one example, the minimum carrier frequency is above that usable by an iron-steel inductor, such as greater than ten kiloHertz at fifty or more amperes. The core is optionally an annular core, solid rod core, or a core used for multiple phases, such as a ‘C’ or ‘E’ core. Optionally, the inductor is used in an inductor/converter apparatus, where output power has a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies, in conjunction with one or more of a silicon carbide, gallium arsenide, and/or gallium nitride based transistor. | 10-29-2015 |
20160043701 | SUB-NETWORK ENHANCED REFLECTIONLESS FILTER TOPOLOGY - Reflectionless low-pass, high-pass, band-pass, band-stop, all-pass, and all-stop filters, as well as a method for designing such filters is disclosed, along with a method of enhancing the performance of such filters through the use of sub-networks to further modify and improve the frequency response. These filters preferably function by absorbing the stop-band portion of the spectrum rather than reflecting it back to the source, which has significant advantages in many different applications. The sub-networks preferably offer additional degrees of freedom by which the leakage through the parent filter may be cancelled or reinforced to alter cutoff sharpness, stop-rejection, or other measures of performance. | 02-11-2016 |