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7609131 Coupling filter device with specific coupling coefficient  
The present invention provides a surface mount design (SMD) coupling filter device with a fixed coupling coefficient having a pair of hollow coils. Theoretically, coupling coefficients of two...
7595687 Apparatus and method for reducing EMI generated by a power conversion device  
An apparatus and method for reducing EMI generated by a power conversion device, as well as a power conversion device employing such apparatus or method (and/or devices employing such a power...
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...
7548137 Generalized cancellation of inductor winding capacitance  
An inductor device or filter such as an electromagnetic interference (EMI) filter which includes an inductor provides cancellation of parasitic capacitance of the inductor and extends high...
7511596 Dual bandpass filter having serial configuration of coupled-line filters  
Two second-order bandpass filter are connected serially to obtain a dual bandpass filter. One is inductive and the other is capacitive. One has a low passband and the other has a high passband....
7453331 Polyphase line filter  
A polyphase line filter includes a first filter branch between a first filter input and a first filter output, the first filter branch comprising a series connection of at least two inductances...
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...
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...
7242269 Filter having parasitic inductance cancellation  
An electrical component includes a capacitive impedance and a shunt path inductance cancellation feature provided by coupled windings. A filter having a capacitor with capacitor-path inductance...
7199682 Distributed balun with a non-unity impedance ratio  
A mode-switching transformer having a first conductive line formed of two primary windings electrically in series, and the length of which is a function of a central operating frequency of the...
7129803 Tuned transformer balun circuit and applications thereof  
A tuned transformer balun circuit includes a transformer balun, a first tuning capacitor, a second tuning capacitor, and a third tuning capacitor. A first plate of the first tuning capacitor is...
7123117 LAN magnetic interface circuit  
A magnetic interface circuit for a LAN, such as an Ethernet network, includes a transformer having a first winding connected to the line side of the LAN and a second winding connected to the...
7102464 Switched transformer for adjusting power amplifier loading  
A circuit includes a transmission line transformer coupled between an input and output port. An inductor may be selectively coupled into the ground return path of the transmission line transformer...
7078987 Narrow band-pass tuned resonator filter topologies having high selectivity, low insertion loss and improved out-of-band rejection over extended frequency ranges  
A tuned resonator circuit topology is disclosed that permits implementation of narrow band-pass filters having high loaded Q and optimal coupling (for low insertion loss) using a parallel tuned...
7002434 Lumped-element transmission line in multi-layered substrate  
A lumped-element transmission line is formed in a multi-layered substrate. A mutual inductance between first and second inductors in a T-equivalent circuit model is enlarged to a designed positive...
6998938 Lumped-element low-pass filter in multi-layered substrate  
A lumped-element low-pass filter is formed in a multi-layered substrate. A negative mutual inductance between two inductors is adjusted to a designed value and utilized to improve the rejection in...
6970057 Lowpass filter formed in a multi-layer ceramic  
A lowpass filter formed in a multi-layered substrate includes a first capacitor formed on at least one layer of the multi-layered substrate and being electrically connected to a first node, a first...
6952142 Frequency-selective balun transformer  
A mode-switching transformer selective on a band centered on a first frequency, comprising, between a same common mode input/output terminal and respectively one of two differential mode...
6924713 High bandwidth magnetically isolated signal transmission circuit  
Many current electronic systems incorporate expensive or sensitive electrical components. Because electrical energy is often generated or transmitted at high voltages, the power supplies to these...
6911797 Multi-axes industrial processing machine  
A multi-axes industrial processing machine with a multi-axes electrical drive system and at least two axle drives that have each an axle module and a built-in motor is disclosed. The machine...
6871059 Passive balun FET mixer  
A FET mixer uses a balun having a primary and secondary, with the primary coupled to an radio frequency signal input. The mixer also includes a pair of field effect transistors (FETs), wherein the...
6809609 Device for preventing mixing of extrinsic noise and protector  
A two-staged coupling transformer comprised of an up-stream coupling transformer and a down-stream coupling transformer are successively provided between an input terminal and an output terminal,...
6788166 Harmonic wave distortion suppressor  
A harmonic wave distortion suppressor includes a main body, at least a connecting pin and a coating. The main body is made of a first material and covered with a second material for absorbing an...
6762655 Circuit arrangement  
To provide a circuit arrangement for filtering and/or selecting single frequencies or frequency ranges, particularly of signals intended for at least an integrated circuit and/or signals generated...
6759926 LC filter circuit, monolithic LC composite component, multiplexer, and radio communication device  
An LC filter circuit includes first and second LC-trap capacitor conductors, respectively, that are opposed to third and LC-trap capacitor conductors with an insulating sheet therebetween to define...
6714101 Noise reduction filter array  
Disclosed herein is an array type noise reduction filter. The array type noise reduction filter has a plurality of noise reduction filters horizontally arranged within a single chip. A plurality of...
6711385 Coupler for wireless communications  
An apparatus for communication of electric or electromagnetic signals over air includes a transmitter or receiver and a coupler. The coupler has a capacitive circuit connected with an air-core or...
6675005 Printed single balanced downconverter mixer  
A single balanced downconverter includes an insulated substrate with a primary circuit and a secondary circuit, each consisting of an open annular foil element, located on opposite sides of the...
6661312 Multilayer filter array  
A multilayer filter array, which is formed by layering a plurality of conductive patterns, includes: coils corresponding to respective plurality of lines, which are formed by arranging the...
6624724 Dual band common-mode noise line filter  
The present invention is intended to provide a line filter having an outstanding attenuation characteristic over a wide frequency band from low frequency band to high frequency band, with an...
6600910 Radio frequency transformer and its use  
A radio frequency transformer has the two lines which constitute it on at least four levels of a printed circuit. Two of the four levels correspond to each line. In one variant the lines are...
6587020 Multilayer LC composite component with ground patterns having corresponding extended and open portions  
A multilayer LC composite component minimizes the inductances of ground patterns to prevent electromagnetic waves from leaking outside the component. The multilayer LC composite component includes...
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...
6552630 Bi-directional low-pass filter for use at user end or office end in communication network  
A bi-directional low-pass filter for use at a user end or an office end in a communication network is disclosed. By providing compensation and high-band attenuation circuitry, the low-pass filter...
6549097 Electrical resonator with a ribbon loop and variable capacitors formed at the parallel ends  
An elementary electrical resonator which includes a ribbon conductor forming a flat loop with at least one turn, the conductor having ends which form two parallel segments. The resonator further...
6542053 Multilayered LC composite with via hole inductors having a connecting pattern forming a group capacitor  
A multi-layered LC composite component achieves greatly increased attenuation in the proximity of a central frequency without increasing insertion loss. In the arrangement of the multi-layered LC...
6538532 Magnetically coupled series-tuned air coil resonators having very low C/L ratios to achieve higher QL, lower insertion loss and improved out-of-band rejection  
A series tuned resonator circuit topology permits implementation of narrow band-pass filters having higher loaded quality factors (Q L ) and lower insertion loss than was previously achievable in...
6529102 LC filter circuit and laminated type LC filter  
Two LC resonance circuits, each including a parallel combination of an inductor and a capacitor and both magnetically coupled, are connected between an input terminal and an output terminal, and a...
6529101 Multilayered LC filter  
A multi-layered LC filter includes a plurality of insulating sheets stacked on each other and inductor via holes that are connected to each other in a stacking direction of insulating sheets,...
6504451 Multi-layered LC composite with a connecting pattern capacitively coupling inductors to ground  
A multi-layered LC composite component achieves greatly increased attenuation in the proximity of a central frequency without increasing insertion loss. In the arrangement of the multi-layered LC...
6476689 LC filter with capacitor electrode plate not interfering with flux of two coils  
An LC filter includes a capacitor with a small residual inductance, and having a good attenuation property up to a high frequency range, so as to achieve a strong attenuation at particular...
6429753 High-frequency filter, complex electronic component using the same, and portable radio apparatus using the same  
A high-frequency filter 10 serving as a bandpass filter has three transmission lines SL 11 to SL 13 side-coupled in three stages. The transmission lines SL 11 to SL 13 are respectively...
6414568 Interdigitated, laminated LC bandpass filter with different length electrodes  
A band pass filter includes LC resonators defined by laminated layers and is constructed such that the resonant frequencies of the LC resonators shift in the same direction when laminated layers...
6295356 Power feed for network devices  
An Ethernet device power transmission system includes an input transformer, an output transformer and a pair of twisted pair conductors. The input transformer includes a pair of primaries for...
6281777 Inductive component for the attenuation of common mode and push-pull interference  
An inductive component for the attenuation of common mode and push-pull interferences in n-lead systems with n≥2 leads, includes a body of a permeable material having n bores formed therein....
6281767 Reconstruction filter for eliminating the switching residue in a switched system  
The filter for eliminating a carrier signal from a modulating signal generated by a circuit supplying a load (Z) comprises a filtering circuit (L, C; L', C') and a cancellation network (Lx, Cx, V 2...
6239672 Wall mount filter for a digital subscriber line (xDSL) network and methods of installation and manufacture  
A wall mount filter for an xDSL network is provided. Wall mount filter includes a wall mount plate to which a connection port is coupled. The connection port is operable to electrically couple to...
6222427 Inductor built-in electronic parts using via holes  
A small inductor built-in electronic part whose Q is high is provided. An LC resonator comprises a laminate composed of a number of laminated electronic layers. Capacitor electrodes, common...
6215374 Magnetically coupled resonators for achieving low cost narrow band pass filters having high selectivity, low insertion loss and improved out-of-band rejection  
Parallel and series tuned resonator circuit topologies are disclosed that permit implementation of narrow band-pass filters having high loaded Q and optimal coupling (for low insertion loss) at...
6188298 Winding transient suppression technique  
The present invention relates to a transformer having a conductive element spiraling along the length of an insulated wire of the coil. When formed into plurality of adjacent turns, the conductive...
Matches 1 - 50 out of 199 1 2 3 4 >