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7633359 |
Monolithically integratable LC circuit arrangement
A monolithically integratable circuit arrangement is provided, which has at least one inductor, formed as a conductor loop, and at least one capacitor, connected to the conductor loop. According to...
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7623001 |
Electromagnetic interference eliminating apparatus
An electromagnetic interference eliminating apparatus includes a multi-stage filter that is composed of inductors, capacitors and resistors, and an active filter. The multi-stage filter receives an...
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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...
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7592883 |
Dual bandstop filter with enhanced upper passband response
A dual bandstop filter affects frequencies in a lower passband, first and second stopbands separated by a middle passband, and an upper passband. The filter includes two legs. In one version, one...
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7592882 |
Dual bandstop filter with enhanced upper passband response
A dual bandstop filter affects frequencies in a lower passband, first and second stopbands separated by a middle passband, and an upper passband. The filter includes two legs. In one version, one...
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7586385 |
Method and apparatus for varying an impedance
A method and apparatus for dynamically varying the impedance of a tank circuit whereby, over time, the response of the circuit to a received signal is maximized.
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7554424 |
Electronic component and method of making
A method of making an orientation-insensitive ultra-wideband coupling capacitor, including the steps of securing an unterminated multi-layer capacitor of a low frequency portion of the...
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7548138 |
Compact integration of LC resonators
A technique to provide a compact integration of inductor-capacitor resonator a capacitor having a top plate and a bottom plate embedding a dielectric layer. The top and bottom plates are...
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7535321 |
Method and apparatus for a printed circuit board (PCB) embedded filter
A printed circuit board (PCB) embedded filter is utilized to provide a low-pass filter characteristic using minimal lumped circuit elements. Microstrips extend on top layer of the PCB to conductive...
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7522017 |
High-Q integrated RF filters
System for high-Q integrated RF filters. A filter system is provided that comprises a resonate LC filter and a Q-enhancement circuit coupled to the resonate LC filter, wherein the Q-enhancement...
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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....
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7508285 |
Band-pass filter circuit
A band pass filter circuit, wherein the band pass filter passes a frequency band between a first cutoff frequency and a second cutoff frequency with respect to an input frequency of an input...
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7508284 |
Hybrid low pass diplex filter
A hybrid diplex bandstop filter includes a lowpass filter circuit which passes a first range of frequencies and a highpass filter circuit passes a third range of frequencies. The filter blocks a...
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7501915 |
High frequency module
A high frequency module reduces the inhibition in magnetic flux generated in an inductor and stray capacitance while simultaneously attaining shorter height and smaller size. The high frequency...
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7492243 |
Planar circuit, high-frequency circuit device, and transmission and reception apparatus
A planar circuit having a conductive film on either main surface of a substrate. The conductive film on one of the main surfaces is patterned with two-dimensionally and repeatedly arranged unit...
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7468642 |
Multi band pass filters
A multi-band band pass filter, including: first and second multi-order asynchronous resonators connected to each other by a coupling resonator and connected to respective first and second matching...
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7443268 |
Bandpass filter within a multilayered low temperature co-fired ceramic substrate
A compact bandpass filter within a multilayered low temperature co-fired ceramic (LTCC) substrate is provided. Each resonator comprises an inductor and a capacitor connected in parallel. A top...
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7436274 |
Band-pass filter
A band-pass filter ( 10 ) for reducing harmonic electromagnetic signals includes an input line ( 100 ), an output line ( 120 ), at least one first resonator ( 140 ), and at least one second...
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7418251 |
Compact radio frequency harmonic filter using integrated passive device technology
A radio frequency (“RF”) harmonic filter circuit as disclosed herein is fabricated using integrated passive device (“IPD”) technology. The RF harmonic filter circuit is configured to...
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7385465 |
Switchable dual-band filter
A switchable dual-band filter comprises first and second switchable resonators, a coupling structure having two ends respectively connecting the first and the second switchable resonators, an input...
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7348866 |
Compact printed filters with self-connected LC resonators
An LC filter structure and method for its fabrication, in which multiple shunt capacitors, multiple shunt inductors and multiple coupling inductors are printed on a metal layer formed on a thin...
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7345558 |
Circuit device
Coil(s) 11 and coil(s) 12 of LC resonant circuit(s) are oriented such that their centers are mutually perpendicular. For example, coil 11 might be mounted so as to stand upright on printed...
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7332984 |
Electronic signal filter including solderless ground clip having surge protection and shielding features
An electronic signal filter is provided, including a first filter housing having a filter cavity, a circuit board having a slot positioned within the filter cavity, and a ground clip. The ground...
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7327207 |
Lamination type electronic component
A lamination type electronic component includes spiral conductor patterns which are substantially quadrilateral and are electrically connected to each other through a via hole formed in a ceramic...
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7323951 |
Casing for CATV filter
A filter for CATV applications includes a housing and two interface caps, each with an annular groove in a header portion thereof. A circuit board having a grounding bus along an edge of the board...
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7321284 |
Miniature thin-film bandpass filter
A bandpass filter includes at least two thin-film layers, a first resonant circuit including a first inductor, and a second resonant circuit including a second inductor. In one embodiment, the...
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7268645 |
Integrated resonator structure and methods for its manufacture and use
An improved integrated LC resonator and methods for making and using the same are disclosed. The resonator includes (i) a first capacitor plate; (ii) an inductor over and in electrical...
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7262674 |
Bandpass filter having first and second serially coupled collection of filter components for providing upper and lower rejection notches
A bandpass filter having a transmission coefficient—frequency spectrum characteristic curve with a notch on each side of the passband is disclosed.
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7259639 |
Inductor topologies and decoupling structures for filters used in broadband applications, and design methodology thereof
Inductor topologies for filters used in broadband applications are described. In one implementation, an apparatus, such as an interface module includes a printed circuit board and a filter. The...
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7245194 |
Resonator and dielectric filter
One pair of resonant electrodes is formed in a loop shape or a spiral shape in a substrate stacking direction symmetrically to each other. This allows a longitudinal space in substrate to be...
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7234234 |
Method of manufacturing bandpass filters for GHz bands
Disclosed is a method of manufacturing a BPF (bandpass filter) for GHz bands of the structure that an input signal line ( 2 ) and an output signal line ( 3 ) run with a small gap on one surface of...
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7183880 |
Discrete inductor bank and LC filter
A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A...
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7145415 |
Electrically tunable filters with dielectric varactors
This invention provides a voltage tunable filter comprising an input connection point, an output connection point, and at least one circuit branch electrically coupled to the input connection point...
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7138872 |
Power amplifier device
The power amplifier device comprises one or more transistors ( 16 ) with an output electrode and on top of that a thin-film capacitor. The capacitor comprises a first conductive layer ( 18 ), that...
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7126443 |
Increasing performance of planar inductors used in broadband applications
Increasing performance of planar inductors used in broadband applications is described. In one implementation, an apparatus includes a high Quality factor (Q) value spiral planar inductor etched...
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7119635 |
Electronic component
An electronic component of the invention has: a substrate; first to third terminal portions disposed on the substrate; and at least one spiral conductor portion disposed between the first and...
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7113588 |
Input-output balanced filter
An input-output balanced filter has a greatly reduced size and excellent stable electric characteristics. The input-output balanced filter includes two LC bandpass filter circuit units. A first LC...
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7109829 |
Filter circuit and laminate filter
Under circumstances where communication devices such as mobile phones are required to be diversified, laminate filters are required to have attenuation-band characteristics which are steep on both...
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7106149 |
Switchable tuneable bandpass filter with optimized frequency response
In a receiver, provision is made of a tuneable switchable bandpass filter comprising a primary resonant circuit and a first secondary resonant circuit. A second secondary resonant circuit can be...
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7088202 |
Methods and apparatus for an improved discrete LC filter
A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A...
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7075389 |
Method and apparatus for achieving broadband matching of narrow-band resonator filter impedances to loads and sources
A circuit for matching the impedance of a narrow-band resonator filter presented to a port over a broad range of frequencies employs a second resonator that has substantially the same transfer...
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7034636 |
Tunable filters having variable bandwidth and variable delay
An apparatus for reducing influence by selected signal components in a communication link includes a first signal line conveying a first communication signal including a desired signal component...
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7012484 |
Filter using multilayer ceramic technology and structure thereof
The present invention discloses a filter using multilayer ceramic technology. The filter comprises an input port, an output port, a first lumped resonator and a first step-impedance resonator...
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7005943 |
Filter for segmenting power lines for communications
There is provided a method for blocking a portion of energy of a signal in a power line. The method includes equipping a high frequency magnetic core with a coil, connecting a capacitor across...
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6995632 |
Band pass filter for GHz-band
Disclosed is a high-frequency band pass filter of simple structure for use in a frequency range from hundreds of MHz to over ten GHz. The band pass filter comprises a magnetic loss sheet 1 ...
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6982614 |
Multi-mode filter
The invention provides a filter network comprising a plurality of circuit branches, each circuit branch comprising one or more filter elements. At least one of the circuit branches comprises a...
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6967544 |
Miniature LTCC 2-way power splitter
A power splitter has a small size with good electrical performance. The power splitter includes a substrate with several dielectric layers. A capacitor is formed between two of the dielectric...
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6933806 |
Electrical signal filter with solderless ground connection
An electrical signal filter is provided, including a first filter housing member and an abutted second filter housing member that define an internal filter cavity. A circuit board positioned within...
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6927645 |
Electronic component structured to compensate for cable losses and method of production
An electronic component and a method of its structuring wherein the component is intended to compensate for “cable loss” attributable to the decay of certain signal characteristics including...
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6914497 |
Parallel multistage band-pass filter
In a parallel multistage band-pass filter, a transmission line having an electrical length substantially equal to half (λ/2) of the wavelength of the transmission signal is incorporated between...
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