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9030271 Microstrip manifold coupled multiplexer  
A multiplexer includes a microstrip manifold, and a filter bank having at least two output filters. The multiplexer channelizes an input radio frequency (RF) band of electromagnetic energy into a...
9030270 Cascaded diplexer circuit  
A cascaded diplexer to create a cascaded diplexer leg with selectable passbands has a cascaded diplexer circuit. The diplexer circuit has a plurality of first bandpass filters, each having a...
9024704 Electronically tunable active duplexer system and method  
This invention provides a novel electronically tunable active duplexer for wireless transceiver applications. It relates to an active duplexer with full-duplex operation, permitting simultaneous...
9024703 Signal directing means for dividing an input signal into at least two output signals or combining at least two input signals into one output signal  
The present invention relates to a signal directing means for dividing or combining signals. It comprises a bottom row first port, a first row first and second port, and a bottom row signal...
9019037 Six-port circuit  
A six-port circuit (100) with two input ports and four output ports, comprising a balun (110) for converting signals at one input port into first (112) and second (113) balanced signals, and a...
9019039 Frequency and bandwidth tunable microwave filter  
An RF bandpass filter includes a cascaded series of a first subfilter and a second subfilter. Each subfilter includes a respective inverter, voltage-controlled capacitor and inductor. A first...
9007146 Duplexer  
A duplexer includes a package substrate having layers stacked, a transmission filter and a reception filter that are provided on an upper surface of a first layer that is one of the layers of the...
9000860 Low-loss TX-to-RX isolation using electrical balance duplexer with noise cancellation  
A circuit for a low-loss electrical balance duplexer (EBD) with noise cancellation may include an EBD circuit. The EBD circuit may be coupled to one or more output nodes of a transmit (TX) path,...
8970320 Filter circuit, duplexer and RF module  
A filter circuit includes a filter part connected between an input terminal and an output terminal and configured to have a passband, and a path connected in parallel with the filter part between...
8970321 Millimeter waveband filter and method of increasing rejection band attenuation  
A millimeter waveband filter is provided with a resonator formed by a pair of electric wave half mirrors in a transmission line of a waveguide allowing electromagnetic waves in a predetermined...
8948707 Duplex filter arrangements for use with tunable narrow band antennas having forward and backward compatibility  
A transceiver module and duplexer within a communication device supports a minimized antenna volume and enhances a transfer gain for transmit and receive channels. The duplexer is communicatively...
8941448 M-way coupler  
An M-way coupler having a first port, M second ports, M transmission line sections, M isolation resistors and a phase shifting network is disclosed, where M is an integer number greater than 1....
8937517 Splitter  
A splitter includes an input terminal, a first output terminal, a second output terminal, a first transmitting unit including a first microstrip coupled between the input terminal and a first...
8933764 Tunable duplexer method using hybrid transformer with dual antenna  
The present disclosure relates to a hybrid transformer duplexer apparatus. The hybrid transformer duplexer apparatus includes an autotransformer having a first port, a second port and a tap...
8928430 Impedance matching apparatus and method of antenna circuit  
An impedance matching apparatus is provided. The impedance matching apparatus includes a signal separation unit, an impedance detection unit, and an impedance matching unit. The signal separation...
8929699 Symmetrical branching ortho mode transducer (OMT) with enhanced bandwidth  
An Ortho Mode Transducer (OMT) comprising a main guide configured with a set of ports and at both ends for communicating a band of frequencies. The ports and are placed at a predetermined distance...
8923783 Transmit and receive transmission circuits coupled to a common antenna for a wireless communication device  
Provided is a wireless communication device in which an antenna switch module is omitted. The wireless communication device includes a PA that amplifies a transmission signal, a transmission...
8896393 Coupling interfaces for communication transceivers over power lines  
A coupling interface couples a transceiver to one or more capacitive voltage dividers of a power transmission system. The coupling interface includes a first signal path including an adjustable...
8884717 Diplexer  
The invention discloses a diplexer formed from the combination of a first filter and a second filter, wherein both the first filter and the second filter have at least one through-hole via...
8878627 Monolithic power splitter for differential signal  
A monolithic power splitter is used to split a pair of input differential signals into two pairs of output differential signals in the present invention. The monolithic power splitter has two...
8872600 High frequency circuit module with a filter disposed in a core layer of a circuit substrate  
The high frequency circuit module includes an RFIC configured to transmit and receive a high frequency signal, a power amplifier IC configured to amplify a transmission signal outputted from the...
8866564 Orthomode transducer device  
The present invention is an orthomode transducer (OMT) device that allows for dual polarized dual frequency band antenna feed systems. The OMT device includes a waveguide structure having a first...
8854155 Adjustable duplexer system  
A duplexing system may be used with an electronic device. The duplexing system may include a duplexer connected with an antenna. The duplexing system may include a balancing network. The balancing...
8847699 Composite component  
A circuit substrate on which a duplexer is mounted includes a substrate body. First, second and third external electrodes are provided on a first main surface of the substrate body. Fourth, fifth...
8830010 High frequency circuit module with a filter in a core layer of a circuit substrate  
The high frequency circuit module includes an RFIC configured to transmit and receive a high frequency signal, a power amplifier IC configured to amplify a transmission signal outputted from the...
8816794 Signal branching filter, electronic device using the same, antenna apparatus, and signal transmission system used in all of the above  
A signal branching filter according to the invention is a signal branching filter connected to a network having at least four terminals. The signal branching filter includes a first line one end...
8803634 Branching device  
In a branching device, an LPF includes a first inductor arranged such that some conductor layers from among conductor layers are wound in a clockwise direction, and a second inductor arranged such...
8803635 Filter isolation using a circulator  
A system of providing filter isolation may include a first filter configured to pass a first frequency range and a second filter configured to pass a second frequency range. The system may also...
8786383 Metamaterial diplexers, combiners and dividers  
A wireless device having a CRLH structure incorporates a power combiner/divider and diplexer. In one embodiment, circuit parameters are selected to achieve impedance matching using a transmission...
8779872 Method and apparatus for integrated waveguide transmit-receive isolation and filtering  
A radio is provided for transmit-receive isolation and filtering (INTRIFWA) that are sealed and/or integrally built-in a housing of a transmitter, which can be used in microwave communication...
8774067 Antenna impedance stabilization with stabilization load in second antenna circuitry  
There are first and second antennas proximally disposed and configured to resonate within respective first and second frequency bands, which may overlap. An impedance stabilization circuitry is...
8773220 Radio frequency front end module and multi band module using the radio frequency front end module  
Disclosed are a radio frequency (RF) front end module and a multi-band communication module using the RF front end module. The RF front end module may use a plurality of bandpass filters and at...
8766744 Duplexer and electronic device having the same  
In one aspect of the invention, a duplexer including a multilayer substrate with multiple stacked layers and a back surface with a rectangular shape is disclosed. An antenna terminal, a...
8760241 Circuit isolation using a signal splitter/combiner  
According to some embodiments described herein, a system of providing filter isolation may include a first filter configured to pass a first frequency range and a second filter configured to pass...
8736399 Triplexer topology  
An apparatus comprising a first filter, a second filter, a third filter, and a fourth filter. The first filter may comprise a low pass filter having a first bandwidth and configured to present a...
8736398 Diplexed TX filter and RF switch with intermodulation suppression  
Disclosed is a diplexed transmit (TX) filter and RF switch for suppressing third order intermodulation (IM3) products. Included are first and second duplexers each having a receive (RX) port, a TX...
8729980 Band-pass filter based on CRLH resonator and duplexer using the same  
A CRLH resonator-based band-pass filter includes at least two CRLH resonators. The resonators are connected by capacitive coupling. The resonators includes a microstrip line having input and...
8723620 Antenna sharer with a ladder filter  
An antenna sharer with both low loss and sharp attenuation characteristic in a wide band is achieved. Antennal sharer 1 of the present invention includes first filter 3 for passing a signal in the...
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...
8674786 Radio communication apparatus  
A large scale integrated (LSI) circuit includes a first terminal, a second terminal, a transmitting circuit coupled to the first terminal and the second terminal, and a receiving circuit coupled...
8600335 Receiver comprising a plurality of selectable receive paths  
A receiver comprising: an antenna for receiving signals in a plurality of frequency bands; an integrated circuit including a plurality of amplifiers, wherein each of the plurality of amplifiers is...
8558641 High-frequency module  
In a high-frequency module, a duplexer element and a matching element are mounted on a surface of a multilayer substrate. On a layer close to the surface, an individual-terminal-side wiring...
8542081 Molded orthomode transducer  
In an exemplary embodiment, a dual-band four-port orthomode transducer (OMT) is molded or cast. The OMT may be external to a transceiver housing or included as an integrated portion of the...
8536957 High-frequency circuit module having a duplexer disposed between specified module integrated circuits  
Provided is a high-frequency circuit module that has high mounting density. In a high-frequency circuit module 100, an RFIC 160 that performs transmission and reception processes for...
8525616 Antenna feed network to produce both linear and circular polarizations  
An antenna feed network includes a septum polarizer including a waveguide defining a cavity, wherein a septum is disposed in the cavity to divide the cavity to form a first port and as second...
8508312 OMT type broadband multiband transmission-reception coupler-separator for RF frequency telecommunications antennas  
The present invention relates to a multiband transmit-receive coupler-separator with a very wide band of the OMT (“OrthoMode Transducer”) type for microwave-frequency telecommunications antennae....
8487714 Duplexer module  
A duplexer module prevents a transmission signal and a reception signal in the same band from interfering with each other. The duplexer module includes a transmission line, a reception line, and...
8461939 Waveguide orthomode transducer  
A waveguide orthomode transducer includes a waveguide including a first waveguide portion and a second waveguide portion placed along a transmission direction of radio signals, the size of an...
8432237 Output circuit with integrated impedance matching, power combining and filtering for power amplifiers and other circuits  
An output circuit with integrated impedance matching, power combining, and filtering and suitable for use with power amplifiers and other circuits is described. In an exemplary design, an...
8421554 Filtering device for filtering RF signals and method for filtering RF signals  
A filtering device comprises an analogue quadrature splitter together with a first filtering element and a second filtering element. The filtering device is adapted to transform filtering...
Matches 1 - 50 out of 314 1 2 3 4 5 6 7 >