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Directional Coupler patents

      

This page is updated frequently with new Directional Coupler-related patent applications.




new patent Integrated directional coupler within an rf matching network
A directional coupler utilizes an inductive element of a power amplifier and a coupled conductive element. The inductive element of the power amplifier is a functioning element within the power amplifier and at least part of the inductive element of the power amplifier is disposed in a multi-layer substrate.
Qualcomm Incorporated


Matching unit and matching method
A matching unit includes a directional coupler for detecting a travelling wave and a reflected wave; a matching circuit including a first variable capacitance capacitor, a second variable capacitance capacitor and an inductance; and a control unit for controlling vc1 and vc2 of the first and the second variable capacitance capacitor by calculating a reflection coefficient based on the travelling wave and the reflected wave. When a distance between the calculated reflection coefficient and a circle described by a trace of the reflection coefficient which passes through a matching point on a smith chart is greater than a predetermined value, the control unit changes vc2 of the second variable capacitance capacitor and the calculated reflection coefficient to make the distance within the predetermined value.
Hitachi Kokusai Electric Inc.


Methods for reconfiguring directional couplers in an rf transceiver
Provided herein are methods of reconfiguring directional couplers in an rf transceiver. The methods can include designing and reconfiguring the directional couplers to provide high directivity and a desired coupling factor using configurable capacitors to effect a mutual coupling and using lumped components or delay lines to effect a phase shift.
Skyworks Solutions, Inc.


Apparatus for reconfigurable directional couplers in an rf transceiver with selectable phase shifters
Provided herein are apparatus and methods for reconfigurable directional couplers in an rf transceiver. Reconfigurable directional couplers can be reconfigured and designed to provide high directivity using configurable capacitors to effect a mutual coupling and using lumped components or delay lines to effect a phase shift.
Skyworks Solutions, Inc.


Semiconductor device
A low reflectance film with a second reflectance (50% or lower) lower than a first reflectance is formed between an optical directional coupler and a first-layer wiring with the first reflectance. Thus, even when the first-layer wiring is formed above the optical directional coupler, the influence of the light reflected by the first-layer wiring on the optical signal propagating through the first optical waveguide and the second optical waveguide of the optical directional coupler can be reduced.
Renesas Electronics Corporation


Testing circuit with directional coupler
Testing circuit with directional coupler. A testing circuit can include a testing circuit input configured to receive an output signal from a module, the output signal having a fundamental component and a harmonic component.
Skyworks Solutions, Inc.


Arrangement and radio-frequency (rf) high power generation
A method and arrangement for rf high power generation includes a power combiner having rf inputs and an rf output, and at least two power amplifier modules, respectively electrically connected by a transmission line to an input of the power combiner, wherein a directional coupler is electrically connected to the rf output of the power combiner and every transmission line includes an rf switch, where the method includes measuring and determining values of the power amplifier modules, storing the values and applying the values as a correction to the input signal of the power amplifier modules.. .
Ooo Siemens


Directional coupler
Directional couplers are used to detect forward power delivered by a power amplifier. Mechanisms are provided herein which improve the accuracy of the power detection in the presence of external noise.
Avago Technologies General Ip (singapore) Pte. Ltd.


Regulating transmit power of signal sources
Example implementations relate to detecting human presence in proximity of a user device. In example implementations, a portion of a first signal may be provided by a first directional coupler that is communicatively coupled to an antenna.
Hewlett-packard Development Company, L.p.


Gps selector from a diversity/mimo antenna cable
A single transmission line couples multiple different antennas to corresponding radios using a low-loss signal selector made from a directional radio frequency coupler and a bandpass filter. A combiner receives signals from the antennas and combines those signals onto the one transmission line.
Continental Automotive Systems, Inc.


Reconfigurable directional coupler with a variable coupling factor

The present disclosure relates to a reconfigurable directional coupler with a variable coupling factor that can be changed in value as a function of a desired transmit band of operation. The reconfigurable directional coupler includes a primary inductive segment, secondary inductive segments, and switch circuitry configured to change the total coupling capacitance formed between the primary and secondary inductive segments by selectively switching the secondary inductive segments into the secondary signal path.
Rf Micro Devices, Inc.

Directional coupler and wireless communication device

A directional coupler including a main line, a sub-line, an input terminal, an output terminal, a coupling terminal and an isolation terminal, wherein the main line includes a first main-line section formed on a first layer, and a second main-line section formed on a second layer; the first and the second main-line sections are connected in parallel between the input and the output terminals; the sub-line includes a first sub-line section formed on the first layer, and a second sub-line section formed on the second layer; the first and the second sub-line sections are connected in parallel between the coupling and the isolation terminals; the first main-line section and the first sub-line section are disposed in close proximity to each other to generate electromagnetic coupling; and the second main-line section and the second sub-line section are disposed in close proximity to each other to generate electromagnetic coupling.. .
Tdk Corporation

Optical modulator with automatic bias correction

An optical modulator uses an optoelectronic phase comparator configured to provide, in the form of an electrical signal, a measure of a phase difference between two optical waves. The phase comparator includes an optical directional coupler having two coupled channels respectively defining two optical inputs for receiving the two optical waves to be compared.
Stmicroelectronics Sa

Optical reflector based on a directional coupler and a coupled optical loop

An optical device includes an optical reflector based on a coupled-loopback optical waveguide. In particular, an input port, an output port and an optical loop in arms of the optical reflector are optically coupled to a directional coupler.
Oracle International Corporation

Board, wireless communications system, and channel correction inside or outside board

A board includes: a baseband unit, multiple transmitters, multiple receivers, a multi-antenna array, a correction transceiver, a correction calculation unit, a bidirectional coupler, and a combiner-splitter. The bidirectional coupler is configured to couple radio frequency signals output by the multiple transmitters and then transmit the coupled radio frequency signals to the combiner-splitter, and to couple receiver correction reference signals obtained by performing division by the combiner-splitter and then send the coupled receiver correction reference signals to the multiple receivers; and the combiner-splitter is configured to combine transmitter radio frequency signals coupled by the bidirectional coupler and then transmit the combined transmitter radio frequency signals to the correction transceiver, and to divide a receiver correction reference signal sent by the correction transceiver and then send receiver correction reference signals obtained by performing division to the coupler.
Huawei Technologies Co., Ltd.

Tunable laser with directional coupler

A tunable laser has a first mirror, a second mirror, a gain medium, and a directional coupler. The first mirror and the second mirror form an optical resonator.
Skorpios Technologies, Inc.

Directional coupler and wireless communication device

A directional coupler including a main line having an input terminal and an output terminal, and a sub-line having a coupling terminal and an isolation terminal, the main line, the sub-line, the input terminal, the output terminal, the coupling terminal and the isolation terminal being disposed within a laminate, wherein the main line and the sub-line extend in a loop shape in parallel with and spaced apart from each other by a gap such that electromagnetic coupling is generated therebetween and such that the main line is positioned outside the sub-line on a coupling layer, the input terminal, the output terminal, the coupling terminal and the isolation terminal are disposed outside the main line, and the main line is interposed between the output terminal and the sub-line.. .
Tdk Corporation

Integrated polarization splitter and rotator

An integrated polarization splitter and rotator (psr) employs the te0 and te1 modes of propagating light, rather than the te0 and tm0 modes used in conventional prior art psr. The integrated psr exhibits appreciably flatter wavelength response because it does not require a directional coupler to de-multiplex incoming polarizations.
Coriant Advanced Technology, Llc

Optical pulse compression reflectometer

An optical pulse compression reflectometer is provided, which comprises: a single wavelength continuous optical source, an optical splitter, a modulation frequency pulse generating module, an optical directional coupler, an optical fiber under test, an optical coupler, a balanced photoelectric detector, and a pulse compression processing module. The present invention, in addition to overcoming the contradictory constraint between spatial resolution and measurement range in traditional time domain reflectometry and giving to full play the super spatial resolution from frequency modulation technology, has a longer measurement range than that in the optical frequency domain reflectometry..
Shanghai Jiao Tong University

Catv entry adapter and distributing catv and in-home entertainment signals

A cable television (catv) entry adapter connects to a catv network and serves as a hub in an in-home entertainment (ihe) network. Ihe signals may be communicated between passive and active ports of an embodiment of the entry adapter through a pair of directional couplers which allow an ihe-enabled embedded multimedia terminal device (emta) at the passive port to communicate with multimedia devices of the ihe network connected to the active ports.
Ppc Broadband, Inc.

Frequency independent isolation of duplexed ports in distributed antenna systems (dass), and related devices and methods

Frequency independent isolation of duplexed ports in distributed antenna systems (dass) is disclosed. Instead of providing a duplexer in a das that provides frequency dependent separation between downlink and uplink communications signals, an isolation circuit is provided.
Corning Optical Communications Wireless Ltd

Directional coupler

A directional coupler includes an outer cavity and first and second striplines deployed within the outer cavity such that transverse electromagnetic (tem) mode signals are coupled between first portions of the first stripline and the second stripline. The directional coupler also includes first and second electrically and thermally conductive elements connecting the first and second striplines, respectively, to the outer cavity..
Radio Frequency Systems Pty Ltd.

Directional coupler

A directional coupler includes: a main line connecting an input port and an output port; first to third subline sections each of which is formed of a line configured to be electromagnetically coupled to the main line; a first matching section provided between the first subline section and the second subline section; and a second matching section provided between the second subline section and the third subline section. The first and second matching sections are configured to cause changes in phase of high frequency signals passing therethrough, and have mutually different characteristics so as to create two attenuation poles in the frequency response of the coupling of the directional coupler..
Tdk Corporation

Enhanced voltage standing wave ratio measurement

Enhanced rf system measurement including measurement of reflected power of a transmission system using two directional couplers configured to couple reflected power (e.g., isolate forward power). The directional couplers may be placed at a distance of ¼ wave separation and measurements from the two directional couplers may be averaged to obtain a reflected power for the transmission path.
Viasat, Inc.

Radio frequency bitstream generator and combiner providing image rejection

A circuit for combining analog signals includes first and second bitstream generators and a directional coupled connected therewith. The first bitstream generator receives a first analog signal and generates a first digital bitstream as a function thereof.
Lsi Corporation

Method for calibrating a test rig

A method for calibrating a test apparatus, having a first and a second directional coupler, for gauging a two-port test object that has a first port and a second port in a calibration plane, wherein for the purpose of calibrating the test apparatus a vectorial network analyzer having a 1st-6th test port is connected to the first and second ports in the calibration plane such that the first and second test ports are connected to respective port in the calibration plane, the third and fourth test ports are connected to the first directional coupler and the fifth and sixth test ports are connected to the second directional coupler via a respective waveguide for electromagnetic waves. For different calibration standards, scatter parameters are determined for each desired frequency point.
Rosenberger Hochfrequenztechnik Gmbh & Co. Kg

Directional coupler and communication device including same

A directional coupler including a first transmission line including a terminal part provided with a matched termination, and a front end part being an end portion on a side opposite to a side of the terminal part; a second transmission line electromagnetically coupled with the first transmission line; and a third transmission line electromagnetically coupled with the first transmission line, wherein each of the second and third transmission lines includes a near end and a far end, the near end being positioned on a side closer to the front end part when tracing the first transmission line from the front end part, the far end being positioned on a side farther from the front end part when tracing the first transmission line from the front end part, and wherein the near end is terminated to have an impedance smaller than a characteristic impedance of the second transmission line.. .
Keio University

Miniature wideband quadrature hybrid

directional coupler includes a first, second and third transmission lines. Each of the first and second transmission line elements is disposed on a dielectric substrate, and has a first end and a second end.
Harris Corporation

Optical device with integrated reflector(s) comprising a loop reflector integrating a mach-zehnder interferometer

An optical device includes a substrate on which is defined at least one primary waveguide (31, 32) defining a loop reflector, that has first and second directional couplers, and a mach-zehnder interferometer intercalated between the first and second directional couplers and arranged for compensating a wavelength dependence of the first and second directional couplers.. .
Thales

Frequency selective power monitor

A power line carrier fault detection system includes a forward signal generator configured to transmit a carrier signal to a power line. A directional coupler couples the forward signal generator to the power line.
Ametek Power Instruments

Optical reflector based on a directional coupler and a coupled optical loop

An optical device includes an optical reflector based on a coupled-loopback optical waveguide. In particular, an input port, an output port and an optical loop in arms of the optical reflector are optically coupled to a directional coupler.
Oracle International Corporation

Multiplex transmission system for wirelessly transmitting power, transmitting side multiplex transmission device and billing/information system

A multiplex transmission system including: a primary transmission power source that feeds power of a single frequency; a transmitter-receiver system that includes plural-line transmission antennas wirelessly transmitting power from the primary transmission power source, and plural-line reception antennas receiving power from the transmission antennas that form pairs with the reception antennas; a directional coupler-type transmission power source circuit establishing resonant condition of each of the transmission antennas; and plural-line reception power source circuits establishing resonant condition of each of the reception antennas that form the pairs. The directional coupler-type transmission power source circuit includes a directional coupler-type output filter that distributes power to the respective transmission antennas..

Wireless electronic device with calibrated reflectometer

An electronic device may have control circuitry that uses a reflectometer to measure antenna impedance during operation. The reflectometer may have a directional coupler that is coupled between radio-frequency transceiver circuitry and an antenna.
Apple Inc.

Directional coupler

A directional coupler is configured to provide a forward and/or a backward signal derived from a high-frequency signal. The directional coupler comprises a coupling element coupled to a main line, wherein the main line is configured to transport the high frequency signal.
Rohde & Schwarz Gmbh & Co. Kg

Time-division duplexing (tdd) in distributed communications systems, including distributed antenna systems (dass)

Time-division duplexing (tdd) in distributed communications systems, including distributed antenna systems (dass) is disclosed. In one embodiment, a control circuit is provided and configured to control the tdd transmit mode of a das to control the allocation of time slots for uplink and downlink communications signal distribution in respective uplink path(s) and downlink path(s).
Corning Optical Communications Wireless Ltd.

Voltage controlled optical directional coupler

A voltage controlled optical directional coupler (vcodc) having a coupling ratio that can be adjusted to any desired value through voltage tuning is disclosed. The vcodc may include a first optical hybrid coupler and a second optical hybrid coupler, which may be coupled with each other via one or more voltage controlled optical elements having a variable transparency depending on a voltage applied to the one or more voltage controlled optical elements.
Corning Optical Communications Wireless Ltd

System and a directional coupler

In accordance with an embodiment, a circuit includes a directional coupler having a plurality of ports comprising an input port, a transmitted port, an isolated port and a coupled port, and an adjustable termination coupled to at least one of the plurality of ports.. .
Infineon Technologies Ag

System and a directional coupler module

In accordance with an embodiment, a circuit includes a first directional coupler comprising a first input port, a first transmitted port, a first isolated port and a first coupled port, where the first directional coupler disposed on a first substrate. The circuit also includes a first direction select switch having a first switch input port coupled to the first isolated port, a second switch input port coupled to the first coupled port, and a first switch output port, where the first direction select switch is disposed on the first substrate along with the directional coupler..
Infineon Technologies Ag

Reconfigurable directional coupler

This disclosure relates generally to directional couplers. In one embodiment, a directional coupler includes a first port, a second port, a third port, a first inductive element, a second inductive element, a first switchable path, and a second switchable path.
Rf Micro Devices, Inc.

Adjustable power divider and directional coupler

A power divider including an input port receiving an electrical power input, a coupled port transmitting a portion of the power input, and a transmitted port transferring a remaining portion of the power input from the input port. A first conductor produces an electrical field and electrically connects the input port to the transmitted port.
John Mezzalingua Associates, Llc

Miniaturized multi-section directional coupler using multi-layer mmic process

A miniaturized multi-sectioned, directional coupler using a multi-layer mmic process, the coupler comprising, a monolithic microwave integrated circuit, having a central section with a relatively tight coupling, surrounded by sections of lighter coupling, the relatively tight coupling being comprised of a pair of spiral coupled lines, and the lighter coupling being comprised of meandered edge couple lines with capacitive loading of the lines in several places.. .
Bae Systems Information And Electronic Systems Integration Inc.

Devices and methods related to directional couplers

Devices and methods related to directional couplers. In some implementations, a coupler can include a driver arm and a coupler arm implemented relative to the driver arm to detect power of an rf signal.
Skyworks Solutions, Inc.

Compact and low loss y-junction for submicron silicon waveguide

A compact, low-loss and wavelength insensitive y-junction for submicron silicon waveguides. The design was performed using fdtd and particle swarm optimization (pso).
Coriant Advanced Technology, Llc

Apparatus and methods for reconfigurable directional couplers in an rf transceiver with selectable phase shifters

Provided herein are apparatus and methods for reconfigurable directional couplers in an rf transceiver. Reconfigurable directional couplers can be reconfigured and designed to provide high directivity using configurable capacitors to effect a mutual coupling and using lumped components or delay lines to effect a phase shift.
Skyworks Solutions, Inc.

Wide band directional coupler

A wide band directional coupler comprises a first transmission line, a second transmission line and at least one inductor, wherein the first transmission line and the second transmission line are adjacent each other, and the inductor connects to the second transmission. As a rf signal passes through the first transmission line, the second transmission line will couple with the rf signal in the first transmission line to generate a coupling signal.
Airoha Technology Corp.

Apparatus and methods for reconfigurable directional couplers in an rf transceiver with controllable capacitive coupling

Provided herein are apparatus and methods for reconfigurable directional couplers in an rf transceiver. Reconfigurable directional couplers can be reconfigured and designed to provide high directivity using configurable capacitors to effect a mutual coupling and using lumped components or delay lines to effect a phase shift.
Skyworks Solutions, Inc.

Zero insertion loss directional coupler for wireless transceivers with integrated power amplifiers

A zero insertion loss directional coupler includes an input port, an antenna port, an isolation port, and a detect port. The coupler has a first signal trace, a second signal trace, and an inductive winding.
Rfaxis, Inc.

Directional coupler

A directional coupler includes a main line, a sub line, and a first parasitic element. The main line includes a first main line portion.
Murata Manufacturing Co., Ltd.

Directional coupler

A directional coupler includes a main line, a sub line, and a parasitic element. The main line includes first and second main line portions formed substantially in a spiral shape, as viewed from a first direction.
Murata Manufacturing Co., Ltd.

Directional coupler and design method thereof, optical waveguide element and wavelength filter

There is provided a directional coupler including a first optical waveguide core and a second optical waveguide core that are arranged in separate and parallel to each other and that propagate one of te polarized waves and tm polarized waves of an m-th order and propagate the other of the te polarized waves and the tm polarized waves of an n-th order. A separation distance between the first optical waveguide core and the second optical waveguide core and a width of the first optical waveguide core and the second optical waveguide core are set such that a mode coupling coefficient of a p-th mode of one of the polarized waves and a mode coupling coefficient of a q-th mode of the other polarized waves match between the first optical waveguide core and the second optical waveguide core..
Oki Electric Industry Co., Ltd.

Optical waveguide directional coupler and making same

An optical waveguide directional coupler includes a base having a planar member and a ridge member and an optical waveguide in the base. The ridge member extends from the planar member and has an upper surface where the optical waveguide exposed.
Hon Hai Precision Industry Co., Ltd.



Directional Coupler topics:
  • Directional Coupler
  • Logarithmic
  • Interrupted
  • Distributed
  • Magnetic Field
  • Subscriber
  • Terminal Device
  • Home Entertainment
  • Multimedia
  • Multimedia Device
  • Second Wave
  • High Speed
  • Transmitter
  • Downstream
  • Feedback Signal


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