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9035719 Three dimensional branchline coupler using through silicon vias and design structures  
A three dimensional (3D) branchline coupler using through silicon vias (TSV), methods of manufacturing the same and design structures are disclosed. The method includes forming a first waveguide...
9013246 Coupler with distributed feeding and compensation  
The embodiments described herein can provide improved signal feeding between hybrid couplers and associated transistors. As such, these embodiments can improve the performance of amplifiers and...
8947160 On-chip millimeter wave Lange coupler  
A Lange coupler having a first plurality of lines on a first level and a second plurality of lines on a second level. At least one line on the first level is cross-coupled to a respective line on...
8928543 Gyrotropic metamaterial structure  
A gyrotropic metamaterial structure that include a plurality of chiral metamaterials forming one or more pairs of dipole structures. A plurality of lumped circuits are positioned between the one...
8902019 Electronic circuit  
An electronic circuit includes: a first resistor having a first terminal and a second terminal; a first transmission line that is coupled to the first terminal of the first resistor, has a first...
8878629 Diplexer for a reflector antenna  
A diplexer for a reflector antenna includes a common circular signal waveguide to transmit and receive signals. The signal waveguide includes first and second ends with a common port provided at...
8797122 Butler matrix  
A butler matrix includes at least one input coupler that is positioned at an input end of the butler matrix, receives an input signal, and divides and outputs it to a plurality of paths, and at...
8773219 Active hybrids for antenna system  
In various embodiments, a differential phase generating hybrid can comprise a first input port in communication with a first active splitter, a second input port in communication with a second...
8773218 Ladder quadrature hybrid  
Embodiments of circuits, apparatuses, and systems for a quadrature hybrid circuit are disclosed. The quadrature hybrid circuit may include a ladder structure, may act as a combiner or a divider,...
8723619 Filter arrangement having first and second duplex filters  
A filter arrangement for filtering a radio transmit signal and radio receive signal, comprising a first duplex filter and a second duplex filter, a signal divider for splitting a transmit input...
8698575 Antenna switching arrangement  
An antenna switching arrangement with a quadrature arrangement of transmission lines through which a desired signal path may be configured via switches selectively grounding junctions of the...
8686808 Band combining filter  
A band combining filter for filtering a microwave signal having at least one band edge at a band edge transition frequency. The filter comprises a plurality of filter sections. Each filter section...
8674785 Hydrocarbon resource processing device including a hybrid coupler and related methods  
A device for processing a hydrocarbon resource may include a radio frequency (RF) source, a first RF conductor, a second RF conductor, and a hybrid coupler assembly coupled to the RF source and...
8629737 Signal processing apparatus  
The signal processing apparatus contains a first signal transforming circuit and a second signal transforming circuit. The first signal transforming circuit includes four first coupled lines and...
8570119 Ultra wide pass-band, absorptive band-reject filter  
An ultra wide band-pass, absorptive band-reject filter has a pair of quadrature hybrid couplers cascaded and coupled by a phase shifting element and a matched pair of band-reject filters in two...
8456255 Variable phase shifter comprising two finite coupling strips coupled to a branch line coupler  
A variable phase shifter comprising a coupler including an input port, an output port, a through port and a coupled port and two conducting finite strips exhibiting equal lengths, the first...
8405470 Diplexer synthesis using composite right/left-handed phase-advance/delay lines  
A diplexing apparatus and method which utilizes composite right/left-handed (CRLH) phase-advance/delay lines combined with a coupler. By engineering CRLH-based transmission lines with desired...
8400235 Active hybrids for antenna systems  
In an exemplary embodiment, a fully monolithic active hybrid architecture can be configured to replace a ring hybrid, magic tee, branchline coupler, or 180° hybrid by providing similar...
8385538 Method, system, and apparatus for a differential transformer-free hybrid circuit  
A differential transformer-free hybrid circuit includes a first amplifier configured to receive a first signal from a transmitter and output the first signal to a telephone loop, and a second...
8344823 Antenna switching arrangement  
An antenna switching arrangement with a quadrature arrangement of transmission lines through which a desired signal path may be configured via switches selectively grounding junctions of the...
8319580 Attenuator  
An attenuator includes a first 3 dB bridge, a second 3 dB bridge and an amplifying tube group, where the amplifying tube group includes a first amplifying tube and a second amplifying tube, a...
8248302 Reflection-type phase shifter having reflection loads implemented using transmission lines and phased-array receiver/transmitter utilizing the same  
A reflection-type phase shifter is provided. The reflection-type phase shifter has a coupler, a first reflection load, and a second reflection load. The coupler has an input port for receiving an...
8232851 On-chip millimeter wave lange coupler  
A Lange coupler having a first plurality of lines on a first level and a second plurality of lines on a second level. At least one line on the first level is cross-coupled to a respective line on...
8228135 Band combining filter  
A band combining filter for passing signals in a communications band includes a plurality of cascaded directional filters. Each directional filter has at least two inputs and at least two outputs....
8207799 Band reject filters  
Distributed band reject filters are disclosed. A band reject filter includes a first acoustic resonator and a second acoustic resonator, each of which has either shunt resonators adapted to...
8154361 Communicating over coaxial cable networks  
A method for communicating over a coaxial cable network is described. The method includes identifying at least one port in the coaxial cable network that provides high mutual isolation among nodes...
8102330 Dual band circularly polarized feed  
Dual band antenna systems and methods providing isolation between bands are provided. The system includes a pair of superimposed antenna radiating elements, each of which is connected to an...
8081062 Transmit/receive antenna system having offset feed points for high isolation  
Provided is an antenna system with high isolation. The high-isolation antenna has transmission ports of a transmission antenna and reception ports of a reception antenna highly isolated from each...
8076996 Hybrid balun apparatus  
A hybrid balun apparatus are disclosed. The hybrid balun apparatus can support both the reception mode and the transmission mode and be advantageous for a high level of integration, by replacing...
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...
8013690 Electronically tunable, absorptive, low-loss notch filter  
An electronically tuned, absorptive, low-loss notch filter with high RF power handling capability is obtained using a four-port quadrature hybrid coupler connected to a matched pair of band pass...
7855617 Quadrature-directed quasi circulator  
A circulator capable of simultaneous transmit and receive operations, high frequency, high isolation and noise figure suppression comprising: an antenna port; a transmission port; a receiving...
7839235 Feed network device, antenna feeder subsystem, and base station system  
A feed network device, an antenna feeder subsystem, and a base station system are provided. The feed network device comprises: two first stage couplers, two phase shifters, and two second stage...
7834719 Lange-ferrite circulator for simultaneous transmit and receive (STAR) with high isolation and noise suppression  
A three port circulator capable of simultaneous transmit and receive operations, high frequency, enhanced high isolation, noise suppression at the receive port and broadband performance...
7821355 Waveguide antenna front end  
In some embodiments of the present invention, an antenna front end includes at least two diplexers. Each of the diplexers is defined with a channel within a single material block. Each channel is...
7808343 Radio frequency (RF) signal combiner having inverted coupler  
A radio frequency (RF) communication device may include an RF 90-degree hybrid combiner having stable phase and loss characteristics over greater than one octave of bandwidth, while providing a...
7786823 Power regulators  
An apparatus for use with a power generator includes a first power splitter having an input port, wherein the input port is configured to connect to a power generator, a second power splitter...
7777591 Variable power coupling device  
Systems and methods for a coupling device are shown. In various embodiments, a variable frequency divider comprises a first transmission line and a second transmission line. The first transmission...
7746193 Miniature 180 degree hybrid coupler  
A 180° hybrid coupler (100) includes a first transmission line transformer (101) and a second transmission line transformer (102). Each of the first and second transmission line transformers is...
7683743 Filtering circuit and structure thereof  
A filtering circuit and a structure thereof are provided. The filtering circuit includes an input terminal, an output terminal, a resonant circuit, a first coupling portion, and a second coupling...
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...
7605676 Directional coupler  
The invention relates to a directional coupler comprising coupled lines, and a method for achieving coupling in a directional coupler under compensation conditions. The directional coupler...
7592881 Power broadband amplifier  
A circuit for broadband amplification is provided. The circuit includes an input HF_IN and an output HF_OUT, a first 90° hybrid coupler being connected to the input HF_IN of the circuit and a...
7592880 Communicating over coaxial cable networks  
A method for communicating over a coaxial cable network is described. The method includes identifying at least one port in the coaxial cable network that provides high mutual isolation among nodes...
7573839 Line driver for an adaptive hybrid circuit  
A second output transmission signal (“TX2”) added to a line driver is a scaled version of the main output transmission signal (“TX1”). TX2 is scaled from TX1 by a variable scale factor K. An...
7561007 Switchable phase shifter for providing selectable phase shift paths  
A switchable phase shifter includes an RF coupler arrangement which simultaneously produces 0° and 180° signals, together with controllable switches which select the desired phase of output signal...
7541890 Quasi active MIMIC circulator  
A circulator capable of simultaneous transmit and receive operations, high frequency, and high isolation and broadband performance comprising: an antenna port; a transmission port; a receiving...
7538635 Quadrature hybrid circuit having variable reactances at the four ports thereof  
Four variable reactance means are connected, respectively, to the four ports of a quadrature hybrid circuit which is composed of four ring-linked two-port circuits each composed of a transmission...
7518467 Dynamic, non frequency dispersive, RF power division by means of variable dielectric material properties  
A monolithic thin film variable power divider is disclosed for variable power level distribution. The thin film power divider includes a substrate having a main surface, a first stage and a second...
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...

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