Quotables
"The man with a new idea is a crank until the idea succeeds."
Samuel Clemens
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8022787 | Duplexer, module including a duplexer and communication apparatus A duplexer includes a common terminal, receiving filters, a transmitting filter, and a hybrid having four terminals (terminals 1 to 4). A first terminal (terminal 1), which is one of the four terminals of the hybrid is connected to the common te... | 09/20/2011 |
| 7623005 | Filter combiner The invention presents a filter combiner, in particular for mobile communications applications, adapted to be connected to an antenna (12), comprising a first directional coupler (13), connected to at least one first filter (15, 15a, 1... | 11/24/2009 |
| 7538634 | Frequency diplexer with an input port and a first and a second output ports The present invention concerns a frequency diplexer with an input port and a first and a second output ports, comprising two directional couplers (14 and 15), an unique filter (16) that entails... | 05/26/2009 |
| 7482893 | Power combiners using meta-material composite right/left hand transmission line at infinite wavelength frequency Power combining methods and devices for tunnel diode oscillators using the infinite wavelength phenomenon observed in composite right/left-handed (CRLH) meta-material lines are described. One implementation utilizes a series combiner composed of zero degree lines, w... | 01/27/2009 |
| 7348864 | Integrated MMIC modules for millimeter and submillimeter wave system applications An integrated circuit module comprising integrated coupling transmission structures protruding from the main body of the integrated circuit with extra substrate material removed around and/or under the coupling transmission structures. ... | 03/25/2008 |
| 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 |
| 7321277 | Waveguide directional filter A waveguide directional filter for combining multiple high power UHF television broadcasting transmitters on to a common antenna. The directional filter arrangement includes an input waveguide, an output waveguide and an interconnected cascade assembly of two or mor... | 01/22/2008 |
| 7321276 | Independently adjustable combined harmonic rejection filter and power sampler An adjustable low pass filter and directional coupler used in microwave communication are combined to reduce the size of the microwave circuit. The low pass filter portion and coupling portion are made independently tunable with a plurality of varactors and variable... | 01/22/2008 |
| 7305261 | Band pass filter having resonators connected by off-set wire couplings A band pass filter which is configured by a microstrip line, or a strip line is provided. The band pass filter has a first half wavelength resonator which resonates at a center frequency of a pass band, a second half wavelength resonator which resonates at the cente... | 12/04/2007 |
| 7283017 | Band pass filter Planar band pass filter includes several planar resonators (Ri) arrange parallely, such that the input (R1) and output (R5) planar resonators are connected to input (11) and output (12) feed lines, respectively, and the connections betwee... | 10/16/2007 |
| 7227432 | MEMS resonator array structure and method of operating and using same A plurality of mechanically coupled MEMS resonators that are arranged in an N×M MEMS array structure. Each MEMS resonators includes a plurality of straight (or substantially straight) elongated beam sections that are connected by curved/rounded sections. Each elong... | 06/05/2007 |
| 7215225 | Superconductor filter A superconductor filter comprises a plurality of resonance elements arranged between input-output lines formed on a substrate. Metal conductor sections serving to inhibit the spatial coupling between the adjacent resonance elements are arranged between prescribed re... | 05/08/2007 |
| 7205867 | Microelectromechanical resonator structure, and method of designing, operating and using same A micromechanical resonator structure including a plurality of straight or substantially straight beam sections that are connected by curved or rounded sections. Each elongated beam section is connected to another elongated beam section at a distal end via the curve... | 04/17/2007 |
| 7187910 | Directional coupler and dual-band transmitter using the same Disclosed herein are a directional coupler which is implemented with strip lines for signal coupling and inter-digital capacitors for phase compensation, and a dual-band transmitter using the same. The directional coupler includes a first transmission device, a firs... | 03/06/2007 |
| 7088089 | Power detector with constant voltage decoupling A power detector for measuring the average power, without constant voltage, of modulated or unmodulated high frequency or microwave signals is described. The power detector includes a signal line connected to a high frequency input. A detection line is capacitively ... | 08/08/2006 |
| 7061445 | Multiband/multichannel wireless feeder approach An antenna system comprising a support structure and a multiband/multichannel wireless feeder configured for coupling antennas located proximate the top of a support structure with electronics located proximate the base of the support structure to overcome losses ty... | 06/13/2006 |
| 7042309 | Phase inverter and coupler assembly A circuit assembly may include one or more coupler sections, and may include a phase inverter and/or a phase shifter. A coupler section may include a phase inverter. A coupler may include first and second mutually coupled spirals disposed on opposite sides of a diel... | 05/09/2006 |
| 7034632 | Multi-tuner receivers with cross talk reduction Multi-tuner receivers with cross talk reduction are disclosed. In one embodiment, a multi-tuner receiver with cross talk reduction includes a low noise amplifier, a set of interstage filters and a set of corresponding tuners. In an alternative embodiment, a multi-tu... | 04/25/2006 |
| 7027778 | Radio frequency switching apparatus and mobile telecommunication terminal using the same A radio frequency switching apparatus wherein a filter for a transmitter module passes a transmission frequency to an antenna in a transmission mode and isolates the antenna and the transmitter module from each other in a reception mode. The radio frequency switchin... | 04/11/2006 |
| 7012479 | Filter circuit and transmitter and receiver using the same A filter circuit filters unnecessary frequency components within a signal. The filter circuit includes a first and a second line pattern and a closed loop pattern portion. The first line pattern has two ends and one end thereof is connected to an input terminal and ... | 03/14/2006 |
| 7009469 | Compact waveguide filter and method A compact multiple VSWR element filter in which one or more of the VSWR filter elements is a waveguide bend or a waveguide media transition. Methods are also disclosed. ... | 03/07/2006 |
| 7005941 | High-frequency coupler A high-frequency coupler for extracting a secondary signal representative of a main signal carried by a conductive line, including two series-coupled, respectively high-pass and low-pass, filters, and the input of which is intended to be connected to said line while... | 02/28/2006 |
| 7002432 | Signal transmission structure A signal transmission structure includes at least one reference plane with a non-reference area, and a signal line with a salient protruding over the edge of the signal line and the salient is corresponding to the position of the non-reference area. When a signal pa... | 02/21/2006 |
| 6952147 | Microstrip coupler A microstrip coupler is provided which includes an controlled capacitance bridge for improved directivity as compared to prior art controlled capacitance bridges. The novel controlled capacitance bridge provides the functionality of prior art wire or ribbon controll... | 10/04/2005 |
| 6917260 | Waveguide directional filter A waveguide directional filter for combining multiple high power UHF television broadcasting transmitters on to a common antenna. The directional filter arrangement includes an input waveguide, an output waveguide and an interconnected cascade assembly of two or mor... | 07/12/2005 |
| 6822531 | Switched-frequency power dividers/combiners Switchable path length coupler/dividers. Coupler/divider operation over multiple frequency bands is provided by using switchable path lengths. In one implementation, a Wilkinson-style device with switches to select different path lengths and therefore operating freq... | 11/23/2004 |
| 6781476 | Filter having directional coupler and communication device An inner conductor comprising high impedance portions and low impedance portions alternately connected to each other is disposed in the center of an outer conductor having a substantially square cross-section. Two holes are formed in one side of the outer conductor ... | 08/24/2004 |
| 6714096 | Waveguide directional filter A waveguide directional filter is described for combining multiple high power UHF television broadcasting transmitters on to a common antenna. The filter arrangement comprises an input waveguide (1) and an output waveguide (2). The waveguides are recta... | 03/30/2004 |
| 6507251 | Dual-mode band-pass filter In a dual-mode bandpass filter, a metal film is partially formed on one surface of a dielectric substrate or at a certain vertical level within the dielectric substrate, first and second input/output coupling circuits are coupled to the metal film, at lea... | 01/14/2003 |
| 6150898 | Low-pass filter with directional coupler and cellular phone An integrated component providing the function of both a conventional directional coupler and a low-pass filter having two attenuation poles at a specified frequency band without changing the line length. Stub lines are connected to both ends of a main tr... | 11/21/2000 |
| 6046654 | Quasi-gaussian filter A low pass filter exhibiting low loss, low reflection, and Gaussian phase distortion characteristics at microwave and radio frequencies is provided. The low pass filter may comprise a negative feed forward network having a first directional coupler having... | 04/04/2000 |
| 5930266 | Multiplexing/demultiplexing an FDM of RF signal channels A multiplexer comprises a number of directional filters 17n connected to a transmission line feeding an antenna 2, 3. Signals to be multiplexed fed to the filters 17n may be sent via respective switches 16n. Unlike prior m... | 07/27/1999 |
| 5838527 | Electrical surge protection apparatus A surge protection apparatus (20) has a first quadrature coupler (22) with a first input (24) coupled to an electrical ground (26), and a second input (28) connected to an input signal. A second quadrature coupler (34) having a third input (32) is coupled... | 11/17/1998 |
| 5729824 | Distributed digital loop carriers system using coaxial cable A low power, low cost distributed digital loop (DDL) carrier system that combines television and voice telephone signal transmission over coaxial cables. The DDL system employs a passive/active tap module (114) that controls the steering of the video and ... | 03/17/1998 |
| 5673010 | Power distributor system and power distributor for microwave signals having recurring hierarchical structure of distributor elements and coupler elements A power distributor for microwave signals has n inputs and n outputs, n/2 coupler elements, four power distributor elements each having n/2 inputs and n/2 outputs. The inputs of the first and third distributor elements correspond to respective inputs of t... | 09/30/1997 |
| 5278529 | Broadband microstrip filter apparatus having inteleaved resonator sections A broadband microstrip filter structure employs a first transmission line which basically consists of a series of capacitor plates which extend between a dielectric layer from a first location to a second location and each of the series of plates are conn... | 01/11/1994 |
| 5235297 | Directional coupling manifold multiplexer apparatus and method A radio frequency multiplexer provides a desired channelization plan by directionally coupling high quality linearly polarized filters to a waveguide manifold. The multiplexer includes a waveguide manifold for transmitting signals in a plurality of differ... | 08/10/1993 |
| 5184098 | Switchable dual mode directional filter system A switchable dual mode directional filter system includes two identical filters coupled to input and output waveguides at the same plane in phase quadrature. Each waveguide has two ports through which the signal enters and exists. One of the filters has a... | 02/02/1993 |
| 5124674 | Lumped element directional filter A directional filter is provided implemented with passive lumped elements in several embodiments from a general 18-element network, to an intermediate ten-element embodiment and a simple two-element filter each with features and advantages depending on th... | 06/23/1992 |
| 5055807 | Method and apparatus for multiplexing broad band high frequency signals for use in network analyzers A method and apparatus for multiplexing broad band high frequency signals comprises a microwave coupler. A first source of signals is connected to the through-arm of the coupler and a second source of signals of higher frequency is connected to the coupli... | 10/08/1991 |
