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| Number | Title | Issue Date |
| 8125299 | Filter circuit A filter for use in a coaxial cable network includes a printed circuit board having first and second opposed major surfaces, and first and second opposing sides. The opposed major surfaces are substantially parallel to a single plane, and are bisected by a longitudi... | 02/28/2012 |
| 8115571 | Harmonic filter A Passive harmonic filter (F) has an input node (B) for connection to a power supply (1), an output node (C) for connection to a load (15, 17) and an intermediate node (A). A first branch (3, 4) located between the input node (B) and the interme... | 02/14/2012 |
| 8115572 | Tunable matching network circuit topology selection Tunable matching network topologies are disclosed. A network in accordance with the present invention comprises at least one inductor, and at least one tunable capacitor, in parallel with the inductor, wherein the at least one tunable capacitor tunes the at least on... | 02/14/2012 |
| 8102222 | Passive part A first passive part forms a second parallel resonance circuit having a resonance frequency near the passing band among a first to a third parallel resonance circuit as follows. That is, the second parallel resonance circuit is formed at a position farthest from a f... | 01/24/2012 |
| 8058950 | Highly selective passive filters using low-Q planar capacitors and inductors A highly selective frequency filter is created from lossy components such as found in standard integrated circuit technologies, including particularly CMOS technologies, without the use of active loss cancellation circuitry. The filter configuration is based on usin... | 11/15/2011 |
| 8018299 | Band-pass filter circuit and multi-layer structure and method thereof A band-pass filter includes a plurality of resonators, a feedback capacitive device and a grounding inductance device. A first end of each resonator is connected to a first node, and a second end of each resonator is connected to a second node. The feedback capaciti... | 09/13/2011 |
| 8013689 | Integrated circuit inductor with transverse interfaces An integrated circuit (IC) inductor structure is provided with transverse electrical interfaces. The inductor structure is formed on at least one IC circuit layer and has a first axis planar to a circuit layer surface, bisecting the inductor into opposite first and ... | 09/06/2011 |
| 7990231 | Delay line In a band-pass filter of a delay line, an input terminal and a first resonator adjacent to the input terminal are coupled through a capacitor. The first resonator and a second resonator adjacent to the first resonator are coupled through a capacitor. The second reso... | 08/02/2011 |
| 7952451 | High-pass filter The invention relates to a high-pass filter comprising a signal line with several capacitors connected in series as well as a ground line, wherein several inductors are connected between the signal line and the ground line. In order to configure the high-pass filter... | 05/31/2011 |
| 7898362 | Passband filter Disclosed is a filter comprising an unbalanced input terminal and two balanced output terminals (a first balanced output terminal and a second balanced output terminal. A capacitor is connected between the first balanced output terminal and the GND, another capacito... | 03/01/2011 |
| 7893795 | Circuit device having inductor and capacitor in parallel connection A circuit device having an inductor and a capacitor in parallel connection includes a planar inductor embedded in an insulating material layer, wherein the planar inductor has a winding wire portion, a first connection terminal and a second connection terminal. The ... | 02/22/2011 |
| 7800461 | Antenna branching filter In an antenna duplexer including a high band side filter, a low band side filter, and a phase shifter in a low pass configuration inserted between the high band side filter and an antenna port and taking phase matching of both filters, a resonance inductor resonatin... | 09/21/2010 |
| 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 the invention, the circuit arrangement comprises (a) at least one fi... | 12/15/2009 |
| 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 circuit operates to improve a quality factor of the filter system. ... | 04/21/2009 |
| 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. Between them, a finite transmission zero is formed to suppress noise. Th... | 03/31/2009 |
| 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 signal, the band pass filter circuit includes: a first resonant circuit; a ... | 03/24/2009 |
| 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 ceramic substrate comprises a top conductive plate to form a first RF gro... | 10/28/2008 |
| 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 resonator (160). The input line inputs electromag... | 10/14/2008 |
| 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 provide second, third, and fourth harmonic rejection while providing good i... | 08/26/2008 |
| 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 impedance conversion circuit connecting an input terminal and the fi... | 06/10/2008 |
| 7352262 | Insulation of anti-resonance in resonators A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function an... | 04/01/2008 |
| 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 dielectric substrate. The capacitors have first electrodes that are form... | 03/25/2008 |
| 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 wiring board, and coil 12 might be mounted so as ... | 03/18/2008 |
| 7336144 | Compact multilayer band-pass filter and method using interdigital capacitor A compact multilayer band-pass filter using an interdigital capacitor which can be integrated into a compact form in a relatively low frequency band. The band-pass filter filters only a signal of a predetermined frequency band from a signal applied through an input ... | 02/26/2008 |
| 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 clip includes a slot-retaining portion positioned within and in contact... | 02/19/2008 |
| 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 insulating layer so as to constitute a coil. The conductor patterns ar... | 02/05/2008 |
| 7323955 | Narrow-band absorptive bandstop filter with multiple signal paths An absorptive bandstop filter includes at least two frequency-dependent networks, one of which constitutes a bandpass filter, that form at least two forward signal paths between an input port and an output port and whose transmission magnitude and phase characterist... | 01/29/2008 |
| 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 is disposed inside the housing. A split ring grounding clamp is dispo... | 01/29/2008 |
| 7321801 | Automatic gain adjustment device and automatic gain adjustment method An automatic gain adjustment device and method capable of accurately adjusting a gain with a simple structure. In an automatic gain adjustment method of a feedback control system that uses a phase difference between an output signal obtained from a controlled object... | 01/22/2008 |
| 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 first inductor comprises a coil having a counter-clockwise rotation posit... | 01/22/2008 |
| 7319850 | Low noise block downconverter converting received signal to intermediate frequency signal In a low noise block downconverter converting a right-hand (or horizontally) polarized wave signal and a left-hand (or vertically) polarized wave signal to intermediate frequency signals, one of two filters for removal of interference waves from the intermediate fre... | 01/15/2008 |
| 7317365 | Bandpass filter having parallel signal paths A bandpass filter comprises a number of resonators which are arranged between an input and an output of the filter and which are interconnected to form at least two main signal paths that lead from the input to the output. The at least two main signal paths have ove... | 01/08/2008 |
| 7315730 | Architecture for a receiver front end having dual output low noise amplifier driving separate pre-selectors coupled to a transformer for single ended output An architecture for a receiver front end utilizes a dual output low noise amplifier (102) driving separate, fixed preselectors (104, 106) coupled to a transformer (108) to generate a single ended output (113). A pair of blocks coupled in ... | 01/01/2008 |
| 7295090 | Filter circuit A filter circuit includes a plurality of resonators connected in parallel and each having loaded Q deviation equal to allowable deviation of a group delay, a divider to divide an input signal to the resonators, a combiner to combine output signals of the resonators,... | 11/13/2007 |
| 7278887 | Integrated filter connector An integrated filter connector apparatus that performs the functions of a coaxial cable connector component combined with the functions of an in-line signal conditioning component. The apparatus eliminates at least one exposed point of connection between a separate ... | 10/09/2007 |
| 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 communication with the first capacitor plate; and (iii) a second capacitor plate ... | 09/11/2007 |
| 7268634 | Dual-mode voltage controlled oscillator using integrated variable inductors A novel form of an integrated variable inductor uses an on-chip transformer together with a variable capacitor. The variable capacitor can either be a varactor or a switched capacitor array and is connected to the secondary coil of the transformer. By changing the c... | 09/11/2007 |
| 7262675 | Laminated filter with improved stop band attenuation Disclosed herein is a laminated filter with improved stop band attenuation, which is adopted in devices using a radio frequency, such as communication systems and/or broadcasting systems. The laminated filter forms cross capacitive coupling as feeding lines of input... | 08/28/2007 |
| 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. ... | 08/28/2007 |
| 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 filter includes a generally circular high Quality factor (Q) value spira... | 08/21/2007 |
