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7595546 |
Printed circuit board
Impedance mismatching points such as a VIA and a connector on a differential line between a differential driver element and a differential receiver element are arranged in predetermined positions....
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7595445 |
Transposition device for a prefabricated electrical canalization
The present invention relates to a transposition device for a prefabricated electrical canalization, said canalization includes a certain number of conducting bars distributing different phases...
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7589605 |
Method and apparatus to provide compensation for parasitic inductance of multiple capacitors
A coupled winding cancels parasitic inductance of first and second capacitors. In an EMI filter having common mode capacitors and a differential capacitors, first and second windings cancel...
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7564695 |
Circuit connection structure and printed circuit board
While gradually increasing the widths of signal lines ( 104 a, 104 b, 105 a, 105 b ) of first and second groups of differential signal lines ( 104, 105 ) to suppress attenuation in the lines,...
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7557676 |
Signal transmission circuit, electronic device, cable, and connector
A signal transmission circuit has first to fourth inductors, and first and second varistors. The first and second inductors are magnetically coupled to each other. The first varistor is connected...
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7528680 |
Electrical filter
An electrical filter has at least four terminals, two inductances and two capacitors. The first inductance is connected between the first terminal and the second terminal, and a second inductance...
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7518463 |
Circuit assembly with conical inductor
A circuit assembly has a conical inductor disposed in a slot formed in a substrate.
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7510991 |
Noise suppressor for electronic signals
The present invention is directed to a noise suppressor for electronic signals. The noise suppressor at least includes Aluminum Oxide (Al 2 O 3 ) that is sintered under high temperature, resulting...
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7498907 |
Transmission line substrate and semiconductor package
A transmission line substrate includes a spurious-wave suppression circuit in which a divider divides a signal line of a driving control signal connected to a semiconductor device into two signal...
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7498895 |
Noise filter, outdoor unit and air conditioner
A noise filter eliminates noise generated by a noise generating source in an outdoor unit in an air conditioner. Power is supplied from a power source to an indoor unit via the outdoor unit. A...
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7495317 |
Semiconductor package with ferrite shielding structure
A semiconductor device comprises at the wafer level one or more ferrite structures adapted to dampen high frequency noise potentially apparent at signal lines and termination points within the...
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7477069 |
Digital method and device for transmission with reduced crosstalk
The invention relates to a method and a device for transmission with reduced crosstalk in interconnections used for sending a plurality of signals, such as the interconnections made with flat...
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7459986 |
Method and apparatus for rejecting common mode signals on a printed circuit board and method for making same
In one embodiment, the invention is an apparatus. The apparatus includes a pair of parallel traces on a first level of a PCB (printed circuit board). The apparatus also includes a stub on a second...
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7432782 |
Signal splitter
A signal splitter includes a low-pass filter circuit for permitting a low-frequency component of an incoming signal in an incoming telephone line coupled to a first connecting port to pass...
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7432781 |
Monolithic duplexer and fabrication method thereof
A monolithic duplexer and a fabrication method thereof. The monolithic duplexer includes a device wafer, a plurality of elements distanced from each other on a top portion of a device wafer, first...
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7426118 |
Printed wiring board
To cancel a magnetic field in an interconnection pattern of a printed wiring board. A first interconnection pattern 3 a is formed on a surface 1 a of an insulating substrate 1 . A second...
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7414491 |
Method and apparatus for changing the polarization of a signal
A method and apparatus for changing the polarization of an input signal includes propagating a polarized input signal having orthogonal E-field components by at least one surface each having a...
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7408426 |
Method and device for transmission without crosstalk
The invention relates to a method and a device for transmission without crosstalk in interconnections used for sending a plurality of signals, such as the interconnections made with flat...
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7408424 |
Compact RF circuit with high common mode attenuation
A compact RF differential circuit has a first differential I/O port comprising a first pair of signal carrying terminals which is connected to a source termination and a second differential I/O...
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7408423 |
Semiconductor device and adjusting method for semiconductor device
An object of the invention is to provide a semiconductor device and an adjusting method for a semiconductor device wherein power source noises and noises radiated as radio waves can be reduced and...
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7397322 |
Radiation noise suppression circuit for differential transmission line
A radiation noise suppression circuit for a differential transmission line includes a differential transmission line which has plus line signal wiring to which a plus line signal of a differential...
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7385466 |
Differential transmission circuit and common mode choke coil
A first transmission line for transmitting a first signal and a second transmission line for transmitting a second signal, which has the reverse phase of the first signal, are connected in series...
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7385455 |
Monolithic integrated circuit with integrated interference suppression device
The invention discloses a monolithic integrated circuit with at least one signal connection carrying a signal and with an interference suppression device integrated in the circuit to reduce...
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7382210 |
Broadband differential coupling circuit having coupled differential aggressor and signal channels
Disclosed are various devices, systems and methods for testing broadband differential coupling circuits that are capable of measuring the amount of extraneous interference and noise in such...
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7376408 |
Reduction of near field electro-magnetic scattering using high impedance metallization terminations
The present invention uses metallization termination techniques to reduce the electro-magnetic field scattering at the edges of metallized areas. The metallization termination techniques provide a...
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7372373 |
Embedded antenna and filter apparatus and methodology
Apparatus and methodology are disclosed for providing effective transmission of data to and/or from an electricity meter by providing embedded radio frequency components. An antenna and stripline...
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7362130 |
Method and device for transmission with reduced crosstalk
The invention relates to a method and a device for transmission with reduced crosstalk in interconnections used for sending a plurality of signals, such as the interconnections made with flat...
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7348862 |
Modular connector with suppression of conducted and radiated emissions
An RJ 45 connector for unshielded CAT5 cable has electromagnetic-interference-suppression circuitry to meet the Class B conducted and radiated emissions standard. The connector comprises, in...
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7345892 |
Semiconductor device, noise reduction method, and shield cover
In a memory module, reference potential connecting patterns are disposed on high frequency signal lines and/or on the extension lines extending from the terminal ends of the signal lines as well as...
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7345889 |
Method and system for reducing radiated energy emissions in computational devices
A method and system for reducing the release of high frequency electromagnetic energy into the environment is disclosed, wherein local regions of distributed capacitance are embedded within a...
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7345555 |
Writing pattern structure of differential transmission paths
A wiring pattern structure having differential transmission paths electrically connects an integrated circuit element and a connector, which are arranged on a printed wiring board. Each of the...
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7339443 |
Common mode radiation inhibit circuit and electronic equipment
To provide a common mode radiation inhibit circuit for a differential transmission line which can inhibit quadratic common mode radiation by ensuring a continuity of grand level at a point of...
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7331698 |
Illumination device and medical imaging and examination device having an illumination device
An illumination device ( 1,10,20,41 ) for illuminating an examination room ( 33 ) of an imaging medical examination device ( 31 ) has illuminants ( 7,21,55 ), which emit light when energized and...
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7310243 |
Method and components for implementing EMC shielded resonance damping
A method and components are provided for implementing EMC shielded resonance damping of a printed circuit board. The EMC shielded resonance damping component includes a capacitor and resistor...
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7295083 |
Structure for electromagnetically shielding a substrate
A circuit board that requires electromagnetic shielding is enclosed in a cavity formed between a metal case and a base substrate. A ground plane, which is electrically conductive, is embedded in...
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7292449 |
Virtual ground return for reduction of radiated emissions
A digital apparatus having a cable comprising a plurality of high-speed and low-speed signal carrying conductors, the conductors carrying the low-speed signals are bypassed to a signal ground with...
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7289006 |
Method and apparatus for implementing common mode cable noise suppression for medium range frequencies
A method, apparatus, and a localized in-line cable filter system are provided for implementing electromagnetic cable noise suppression. The localized in-line cable filter system includes at least...
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7263764 |
Method for adjusting performance characteristics of a multilayer component
A method for adjusting the equivalent series resistance (ESR) of a multi-layer component includes providing at least first and second layers separated by an insulating layer, providing a resistive...
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7256662 |
Common mode signal suppressing circuit and normal mode signal suppressing circuit
A common mode signal suppressing circuit comprises: a first winding ( 11 ) inserted to a conductor line ( 3 ); a second winding ( 12 ) that is inserted to a conductor line ( 4 ) and coupled to the...
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7242265 |
Element of parallel flat plate line type, a circuit board
An element of parallel flat plate line type suitable for operation at a higher speed and with a higher frequency is provided. The element is characterized by including a first metallic member 1 ...
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7221235 |
Variable reluctance ferrite core
A device, system, and method for suppressing electromagnetic interference (EMI). In one embodiment, an EMI suppression device includes a compound ferrite core having an inner ferrite core and an...
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7211740 |
Valve metal electromagnetic interference filter
A valve metal electromagnetic interference filter (VMEIF). The filter comprises a porous valve metal pellet with at least three terminals extending therefrom. A dielectric layer at least partially...
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7211724 |
Noise filter having case and core assembled therein
A noise filter providing a simplified construction and capable of being used regardless of a diameter of a cable or a numbers of cables. The noise filter includes a core-holding section for holding...
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7205860 |
Electromagnetic interface module for balanced data communication
Apparatus for reducing a common mode (CM) electromagnetic interference (EMI) in a balanced transmission line which carries a differential signal occupying a specified frequency band is described....
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7183793 |
Systems and methods for reducing electromagnetic emissions from a controller area network transceiver
Systems are provided for reducing electromagnetic emissions from a controller area network transceiver. A driver circuit is operative to transmit communications across an associated bus. A static...
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7173182 |
Signal transmission cable with connector
A signal transmission cable with a connector, that includes a shielded cable having a shielding layer and an insulating coating layer, which cover a periphery of a plurality of insulated wires, and...
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7170363 |
Guides for r.f. magnetic flux
Microstructure materials which can be tuned to a particular range of r.f. frequencies to display particular magnetic permeabilities have been proposed. A typical material is made of an array of...
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7167378 |
Circuit board transmitting high frequency signal
At least one of a feedback path and a feed path is divided into two paths, and the divided feedback path and the feed path for feeding a signal form a twisted pattern to suppress radiation noise of...
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7154049 |
Apparatus for crosstalk compensation in a telecommunications connector
A printed circuit board providing crosstalk compensation. The printed circuit board includes first plated through holes for receiving a first connecting component and second plated through holes...
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7129419 |
Printed circuit board with low noise
The present invention relates to a printed circuit board with low noise. A voltage source layer and a ground layer of the printed circuit board are divided into an analog area and a digital area...
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