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Directional Coupler

Directional Coupler-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Theta laser
Ecole Polytechnique Federale De Lausanne (epfl)
April 12, 2018 - N°20180102625

An unidirectional short-wave infrared fiber laser, comprising a theta cavity, with a gain unit based on rare-earth cations-doped fiber, the theta cavity having a ring cavity with two additional 2 input ports×2 output ports directional couplers dc1 and dc2 inserted therein, one port of the directional coupler dc1 connected to another port of the directional coupler dc2, forming an s-shaped ...
Directional coupler
Murata Manufacturing Co., Ltd.
April 12, 2018 - N°20180102582

A directional coupler includes an input terminal, an output terminal, a coupling terminal, a termination terminal, a first ground terminal, second ground terminals, a main line, a first sub line, and a second sub line. A first low pass filter is included between the coupling terminal and the first sub line. A second low pass filter is included between the ...
Integrated polarization splitter and rotator including a third region for tuning the polarization dependent loss ...
Elenion Technologies, Llc
April 12, 2018 - N°20180100969

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. The psr allows tuning of the tm0 loss to reduce polarization ...
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Radio frequency power sensor having a non-directional coupler
Bird Technologies Group Inc
March 29, 2018 - N°20180090809

Disclosed is a capacitive non-directional coupler having a non-directional coupler printed circuit board (pcb) and a capacitive attenuator the non-directional coupler pcb includes a coupler section configured to carry energy travelling on a main transmission line. The non-directional coupler pcb and the capacitive attenuator are configured as a capacitive voltage divider, and provide a sample of the energy on the ...
Switching optical antenna, switching optical antenna array, and optical scanning device
Kabushiki Kaisha Toyota Chuo Kenkyusho
March 29, 2018 - N°20180088439

A switching optical antenna that includes: a waveguide including a light input end and a light output end; a ring waveguide coupled with the waveguide through a first directional coupler; a diffraction grating that is disposed within the ring waveguide and that is coupled with the ring waveguide through a second directional coupler; and a refractive index adjusting section that ...
Embedded directional couplers and related methods
Semiconductor Components Industries, Llc
March 22, 2018 - N°20180083336

A directional coupler includes an electrically conductive main line coupled at least partially in and/or on a dielectric layer and having input and output ports. An electrically conductive coupled line separated from the main line includes a coupled port and is at least partially formed in and/or on the dielectric layer. An electrically conductive ground layer couples with ...
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Multi-input directional coupler printed circuit
Tivo Solutions Inc.
March 08, 2018 - N°20180070196

Approaches, techniques, and mechanisms are disclosed for allowing multiple distinct and diverse wireless services (e. G., wi-fi, bluetooth, radio frequency for consumer electronics (rf4ce), zigbee, etc.) to share common frequencies while utilizing a single set of antennas. Among other potential benefits, the techniques may permit the sharing of common frequencies amongst multiple services with reduced (or no) interference amongst ...
Bidirectional coupler
Murata Manufacturing Co., Ltd.
March 01, 2018 - N°20180062672

A bidirectional coupler includes the following elements. A main line and a sub-line are electromagnetically coupled. First and second resistors are each grounded at one end. First and second switches connect the sub-line to the first and second resistors or a third port. A third resistor is disposed between one end of the sub-line and the first switch or between ...
Directional coupler and wireless communication device using the same
Tdk Corporation
March 01, 2018 - N°20180062237

Disclosed herein is a directional coupler that includes a main line configured to transmit a high-frequency signal, a sub line electromagnetically coupled to the main line, and a ground pattern positioned at least partially between the main line and the sub line in a plan view. The sub line includes a low pass filter having an inductance pattern and a ...
Directional coupler and communication module
Kyocera Corporation
March 01, 2018 - N°20180062236

A directional coupler includes a first signal transmission line disposed between a signal input terminal and a signal output terminal, a coupled line disposed between a coupled output terminal and a resistance connection terminal and electromagnetically coupled to the first signal transmission line, switching terminals connected to a switching element of an ic chip, and a second signal transmission line ...
Semiconductor device
Renesas Electronics Corporation
February 22, 2018 - N°20180052338

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 ...
Signal processing circuit, signal processing module, and communication apparatus
Sony Semiconductor Solutions Corporation
February 15, 2018 - N°20180048046

In one example, a signal processing circuit including a directional coupler and a termination part is disclosed. The directional coupler includes a main line as a transmission path of an rf signal and a sub-line constituting a coupled line together with the main line. The termination part includes devices connectable between ground and a first port at an end of ...
Directional coupler and a combiner
Rohde & Schwarz Gmbh & Co. Kg
February 08, 2018 - N°20180040938

A directional coupler is described comprising two housing parts which define at least two hollow conductors and a separation wall positioned between both hollow conductors. Said separation wall comprises several holes ensuring a coupling of the at least two hollow conductors. Said several holes are arranged in two rows in an alternating manner such that a galvanic connection of both ...
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Apparatus and method for matching antenna impedance in wireless communication system
Samsung Electronics Co., Ltd.
January 25, 2018 - N°20180026369

Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; ...
Low noise network interface device
Ppc Broadband, Inc.
January 04, 2018 - N°20180007425

The present disclosure provides a network interface device, including an active downstream radio-frequency (rf) signal path connecting an entry port and an active port. The network interface device also includes a passive downstream rf signal path connecting the entry port and a passive port. The network interface device further includes an active upstream rf signal path connecting the entry port ...
Method and system for waveguide delay based equalization with summing at single-ended to differential converters ...
Luxtera, Inc.
January 04, 2018 - N°20180006732

Methods and systems for waveguide delay based equalization summing at single-ended to differential converters in optical communication are disclosed and may include: in an optoelectronic receiver including a directional coupler, photodetectors, transimpedance amplifiers (tias), and a gain stage, receiving an input optical signal; splitting the input optical signal into first and second optical signals using the directional coupler; generating a ...
Method and system for waveguide delay based equalization with current and optical summing in optical ...
Luxtera, Inc.
January 04, 2018 - N°20180006731

Methods and systems for waveguide delay based equalization with current and optical summing in optical communication are disclosed and may include an optoelectronic receiver including a directional coupler, two or more photodiodes, and one or more current mirrors. The optoelectronic receiver may be operable to: receive an input optical signal; split the input optical signal into first and second optical ...
Differential directional coupler, signal conversion system and method for converting a differential input signal
Infineon Technologies Ag
January 04, 2018 - N°20180006352

In accordance with an embodiment, a differential directional coupler includes a first coupler having a first transformer comprising a first input coil and a first output coil, and a second coupler having a second transformer comprising a second input coil and a second output coil. The first input coil and the second input coil each include an input port, the ...
Wireless device with a multi-turn directional coupler
Intel Ip Corporation
December 28, 2017 - N°20170373767

A directional coupler disclosed herein may include a main line provided on a substrate, the main line having a first end connected to an input port and a second end connected to an output port. The coupler may include a coupled line disposed on the substrate, the coupled line having a first end connected to a coupled port and a ...
Magnetic resonance imaging apparatus and apparatus for measuring radio frequency output for the same
Toshiba Medical Systems Corporation
December 28, 2017 - N°20170371011

An apparatus for measuring radio frequency output for a magnetic resonance imaging apparatus includes a plurality of directional couplers, a comparator, a switcher and a converter. The plurality of directional couplers are different in degree of coupling from each other, and attenuate an rf signal which is generated in an rf signal generator and amplified in an rf power amplifier. ...
Communication device and method for determining a load impedance
Infineon Technologies Ag
December 07, 2017 - N°20170352947

According to one embodiment, a communication device is described comprising an antenna, a signal path for supplying a signal to the antenna, two directional couplers arranged within the signal path, wherein each directional coupler is coupled to an adjustable impedance defining the characteristic impedance of the directional coupler, a controller configured to set, for each of a plurality of impedances, ...
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