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6768053 |
Optical fiber assembly
A shielded assembly that includes a power source for generating electricity, a device for converting the electricity into optical energy, a device for converting the optical energy into electrical...
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6765451 |
Method and apparatus for shielding a component of an electronic component assembly from electromagnetic interference
An electronic component assembly includes an electromagnetic interference (EMI)-producing component capable of generating EMI and an EMI-sensitive component. The electronic component assembly...
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6757386 |
Apparatus, system, and method for efficient reduction of electromagnetic interference in telecommunications equipment
An apparatus for reducing electromagnetic interference on signals being communicated through one or more communications conductors is disclosed. The apparatus of the present invention is preferably...
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6750732 |
Circuit board with EMI suppression
A microstrip-type of circuit board is used as a source driver for a liquid crystal display. Video signal buses extend in a longitudinal direction on the board. Along a centerline of the...
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6738919 |
Signal trace phase delay
A technique for reducing electromagnetic interference (EMI) in electronic systems that provides a phase shift between signals having a common frequency component propagating on adjacent portions of...
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6731687 |
Dynamic line balancing scheme for providing inter-packet squelch
A method for dynamically balancing a serial data link is disclosed. The serial data link includes a first transmission line and a second transmission line. The method includes the steps of creating...
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6727774 |
BYPASS CAPACITOR METHODS FOR ACHIEVING A DESIRED VALUE OF ELECTRICAL IMPEDANCE BETWEEN PARALLEL PLANAR CONDUCTORS OF AN ELECTRICAL POWER DISTRIBUTION STRUCTURE, AND ASSOCIATED ELECTRICAL POWER DISTRIBUTION STRUCTURES
Several methods are presented for achieving a desired value of electrical impedance between parallel planar conductors of an electrical power distribution structure by electrically coupling...
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6727781 |
High frequency amplifier
Disclosed is a high frequency (HF) amplifier to be used at a high frequency, typically in the range of 9 GHz to 12 GHz, in which coupling of input side and output side is prevented to achieve high...
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6717485 |
Interference signal decoupling using a board-level EMI shield that adheres to and conforms with printed circuit board component and board surfaces
A decoupling circuit on a printed circuit board is disclosed. The decoupling circuit comprises an electrical filter circuit electrically connected between an interconnect post and a ground land of...
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6714092 |
Supply noise filter for clock generator
A circuit for removing noise from the power supply of a clock generator. Switching regulator noise from the voltage regulator section can affect a clock chip when it is carried through the power...
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6710255 |
Printed circuit board having buried intersignal capacitance and method of making
A first signal path is connected to a first plane via a plated hole. A first metal flood is connected to the plated hole to form a first plate. A second signal path is on a second plane. A second...
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6710673 |
Return path noise reducer
A coaxial network filter device for reducing RF signal interference which enters the coaxial network via a ground wire attached to the outer shield on the coaxial cable in the coaxial network. The...
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6710473 |
Current conducting part of a power transmission line
An electrical power transmission line includes an electrical conductor including a plurality of interconnected individual current conducting sections and a conducting section connector disposed...
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6707685 |
Multi-layer wiring board
A multi-layer wiring board comprises an insulating substrate having, on a central part of its top surface, a semiconductor device mounting portion and having, on its under surface, an external...
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6703558 |
Coil wire for suppressing electromagnetic interference
A connecting cable for bridging a computer host and a peripheral device including a signal line for data transmission and a power cable. A portion of the power cable is wrapped around the signal...
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6700455 |
Electromagnetic emission reduction technique for shielded connectors
A method and apparatus for reducing electromagnetic emissions from a high-speed differential data connector is disclosed. The method and apparatus are as effective as a 360° enclosure, while being...
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6690250 |
RFI filter for a frequency converter
The invention relates to an RFI filter used for avoidance of mains retro-action in the form of radio noise. RFI filters are connected to frequency converters in order to reduce radio noise...
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6683913 |
Narrowband noise canceller
A high-speed receiver, adapted to receive signals over an input line in the presence of narrowband radio frequency interference (RFI). The receiver includes a RFI canceller module, which is coupled...
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6670863 |
Device for suppressing electromagnetic coupling phenomena
The invention relates to a resonance trap ( 8 ) for suppressing electromagnetic coupling phenomena for a line ( 1 ), which resonance trap includes a conductor ( 10 ) which extends parallel to and...
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6664624 |
Semiconductor device and manufacturing method thereof
A source electrode, a gate electrode, and a drain electrode formed on a front face active region of a semiconductor substrate in a shape of teeth of a comb are covered with an insulating film such...
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6661303 |
Cross talk suppression in a bidirectional bus
A bidirectional bus and data processing system suitable for suppressing cross talk noise are disclosed. The bidirectional bus includes, a first interconnect line driven by a pair of drivers, a...
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6661304 |
Apparatus for reducing electronic wave by using electronic wave as energy source
The present invention discloses an apparatus for reducing an electronic wave by using the electronic wave as an energy source which can efficiently consume the electronic wave generated in electric...
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6661311 |
Electric apparatus comprising a shield and transmission means with filtering of an electric signal on both sides of the shield
The invention relate to an electric apparatus which comprises a metallic housing formed by at least a part containing a switched-mode power supply, one part containing an amplifier and a shield...
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6643501 |
Flexible ferrite gasket for receiver second image protection
In a superheterodyne receiver, energy can bypass a filter by magnetically coupling to a metallic radio frequency shield. This is especially a problem with small form factor devices in which the...
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6642806 |
High frequency suppression device
A device and method for filtering high frequency transients from medium and high voltage conductors is disclosed. The device for filtering medium voltage and high voltage conductors comprises an...
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6633000 |
Noise filter with an improved insulating case
A noise filter ( 100 ) includes a hollow ferrite core ( 10 ) for receiving a cable ( 200 ) therein and an insulating case ( 20 ) covering the ferrite core. The insulating case is made up of a pair...
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6624714 |
Radiator capable of considerably suppressing a high-frequency current flowing in an electric component
In a radiator ( 1 ) for use in radiating heat generated by an electronic component ( 5 ), a high-frequency current suppressor ( 2 ) is attached to that principal surface of the radiator which faces...
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6621382 |
Noise filter and high frequency transmitter using noise filter
A main microstrip line, one end of which has an input signal supplied thereto and other end of which outputs a signal, is formed on a substrate. Five sub-microstrip lines are made to intersect with...
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6621373 |
Apparatus and method for utilizing a lossy dielectric substrate in a high speed digital system
An electronic device includes a standard dielectric material and a lossy material integrated with the standard dielectric material to selectively control the distributed resistance of the standard...
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6614325 |
RF/IF signal distribution network utilizing broadside coupled stripline
A Printed Circuit Board (PCB) ( 30, 70, 102 ) and method of manufacturing same. The PCB ( 30, 70, 102 ) includes an embedded shielded conductor structure comprising a dielectric layer ( 42 )...
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6610926 |
Junction box
A junction box ( 10 ) is constituted by a junction box body ( 14 ), on which a fuse outlet ( 11 e ) is formed, and a casing ( 18 ) for housing the junction box body ( 14 ). The casing ( 18 ) is...
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6603080 |
Circuit board having ferrite powder containing layer
A circuit board of the present invention is adapted to suppress electromagnetic interference. Such a circuit board comprises an electrically conductive transmission layer defining a circuit...
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6597255 |
Power transmission system for a Faraday cage power source
A transmission system is provided for a power source to transfer power to equipment housed within a Faraday cage. The transmission system transfers energy along a non-conductive path yet remains in...
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6583682 |
Method of reducing conducted EMI in motor drive applications
Conductive EMI in motor drive circuits is reduced by interposing inductors in the ground line. The common mode current enters the motor drive circuit through the two supply leads and leaves the...
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6573804 |
Electronic apparatus having a printed circuit board with multi-point grounding
An electronic apparatus comprises a conductive device frame, a signal transmitting print wiring plate arranged on said conductive device frame, incorporating a digital clock circuit and having a...
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6566973 |
EMI enclosure having a waveguide for cables
An electromagnetic enclosure is provided that this configured to enclose an electrical assembly. The enclosure includes a waveguide defining a channel that one or more cables from the electrical...
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6566974 |
CONNECTION STRUCTURE FOR NOISE REDUCTION IMPEDANCE ELEMENT, NOISE REDUCTION IMPEDANCE ELEMENT POSITIONING METHOD, AND RECORDING MEDIUM HAVING NOISE REDUCTION IMPEDANCE ELEMENT POSITIONING PROGRAM RECORDED THEREIN
A noise reduction impedance element connection structure includes first and second noise-reduction impedance elements which are electrically connected to a transmission path. A noise frequency that...
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6559733 |
Reducing effects of electrical impedance
The present invention, in various embodiments, provides techniques for reducing effects of electrical impedance. In one embodiment, the impedance is in the form of inductance and arises from vias...
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6538524 |
Using electrically lossy transmission systems to reduce computer RF emissions
A computer system employs electrically lossy transmission systems to dissipate RF energy, and thus reduce RF emissions near the source. An electrically lossy dielectric includes a colloidal...
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6529091 |
Absorptive circuit element, absorptive low-pass filter and manufacturing method of the filter
An absorptive circuit element includes a core body made of non-conductive material, an inner conductor formed by winding a conductive wire around the core body with a gap provided between adjacent...
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6529087 |
Noise removing filter for electronic equipment with a ferrite flanged core
In a noise removing filter for removing the electromagnetic wave noise leaking from an electronic equipment to the outside via a connector throughhole through which a connector passes, the noise...
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6515230 |
Noise absorber and case for noise absorber
A case for a noise absorber including a first case member and a second case member. The first case member includes a first cable guide and a second cable guide at opposite sides and a first core...
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6512425 |
Electric noise absorber
An electric noise absorber for preventing looseness of magnetic body parts in a closed housing, without increasing the number of parts or decreasing the strength of the housing. The housing...
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6486696 |
Termination structure for high speed, high pin density chips
An apparatus including first and second devices, at least one connection between an input of the second device and an output of the first device, and at least one resistor in series between the...
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6473596 |
Close proximity transmitter interference limiting
A weaker signal receiving system inclusive of stronger nearby-sourced interference signal cancellation capability. Stronger interference signal cancellation is accomplished by actively canceling or...
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6472958 |
Input circuit of satellite tuner
A circuit that prevents a receiving signal from leaking to an LNB supply line to thereby deteriorate input VSWR characteristic includes a capacitor of about 1000 pF for removing noise and a...
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6469594 |
Attenuation of electromagnetic noise including a permanent magnet
A device and a method for its use to attenuate electromagnetic noise, such as that caused in power supply line current by back-emf from devices being powered, in order to provide cleaner, or more...
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6469589 |
Noise filter with an outer wire fixing portion on the core case
A noise filter is provided with a cylindrical ferrite core having a wire insertion through-hole, the ferrite core being received within a case. A wire passing once through the wire insertion...
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6465732 |
Laser formation of a metal capacitor and integrated coaxial line
A method and device for forming metal capacitor and integrated coaxial lines using energy transfer so as to form conductive links among conductors. Conductors are embedded within nonconductive...
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6462630 |
Wideband noise reducing device
A wideband noise reducing device has a three level structure including a magnetic member comprising at least one magnetic film, and first and second boards disposed on both sides of the magnetic...
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