公开(公告)号：US20220345236A1

公开(公告)日：2022-10-27

申请号：US17762389

申请日：2019-09-27

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Fumihiro YAMASHITA

IPC分类号： H04J1/04 ,  H04J1/08 ,  H04L27/26 ,  H04W52/52

摘要： In a wireless communication system that performs a wireless communication by performing band division into a plurality of sub-spectra, a transmission device includes a band division unit and a transmission gain control unit configured to control a transmission gain of each of transmission signals of a plurality of sub-spectra for each sub-spectrum in accordance with information that is related to a power density of each sub-spectrum and fed back from a reception device so that the power density of each of reception signals of the plurality of sub-spectra on the reception device is uniform, and the reception device includes a reception power density detection unit configured to detect the power density of each of the plurality of sub-spectra to be received, a feedback unit configured to feed back information regarding the power density to the transmission device, and a band synthesis unit. Thus, it is possible to avoid deterioration of signal quality in hand division and synthesis transmission.

公开(公告)号：US20220140927A1

公开(公告)日：2022-05-05

申请号：US16718095

申请日：2019-12-17

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Nicholas Torleiv Bronn ,  Daniela Florentina Bogorin ,  Patryk Gumann ,  Sean Hart ,  Salvatore Bernardo Olivadese

IPC分类号： H04J1/08 ,  G06N10/40

摘要： A system includes a quantum processor includes a plurality of qubits. For each qubit, there is a circulator operative to receive a control signal and an output signal from the qubit. An isolator is coupled to an output of the circulator. A quantum-limited amplifier is coupled to an output of the isolator and configured to provide an output of the qubit. A multiplexor (MUX) is configured to frequency multiplex the outputs of at least two of the plurality of qubits as a single output of the quantum processor.

公开(公告)号：US11038541B2

公开(公告)日：2021-06-15

申请号：US16588480

申请日：2019-09-30

申请人： Huawei Technologies Co., Ltd.

发明人： Jinsong Lv ,  Honggang Xu ,  Jueping Wang ,  Tao Pu

IPC分类号： H04B1/00 ,  H04J1/08 ,  H04W88/10

摘要： Embodiments disclose a multi-frequency transceiver and a base station. The multi-frequency transceiver is connected to an antenna, and includes: at least one transmit multiplexer, where each transmit multiplexer includes multiple transmit paths, and each transmit path is used to transmit one frequency band by using the antenna; and at least one receive multiplexer, where each receive multiplexer includes multiple receive paths, and each receive path is used to receive one frequency band by using the antenna.

公开(公告)号：US10778355B1

公开(公告)日：2020-09-15

申请号：US16432357

申请日：2019-06-05

申请人： United States of America as represented by the Administrator of NASA

发明人： Rafael Rincon ,  Dee-Pong Daniel Lu

IPC分类号： H04L27/00 ,  H04J1/08 ,  G01S7/03 ,  G01S13/02 ,  G01S13/90

摘要： A frequency division multiplexing system includes a processor, a first digital to analog converter (DAC) for generating a local oscillator signal, a second DAC for generating a chirp signal, and a plurality of electronic elements, each having a transmit signal mixer for combining the local oscillator and chirp signals, and a transceiver configured to transmit the combined local oscillator and chirp signals, where the processor may be configured to operate the first DAC and second DAC to vary frequencies of the local oscillator and chirp signals such that the combination of the local oscillator and chirp signals results in a constant center frequency with a varying phase.

公开(公告)号：US10536165B1

公开(公告)日：2020-01-14

申请号：US16280985

申请日：2019-02-20

申请人： QUALCOMM Incorporated

发明人： Anand Gaurav ,  Bo Sun

IPC分类号： H03M9/00 ,  H04J1/08

摘要： In certain aspects, a serial-to-parallel converter includes multiple cascaded stages configured to convert a serial data stream into multiple parallel data signals, wherein each of the stages includes one or more demultiplexers. The serial-to-parallel converter also includes demultiplexer control circuits, wherein each of the demultiplexer control circuits is coupled to the one or more demultiplexers of a respective one of the stages, and a pattern detector coupled to the demultiplexer control circuits.

公开(公告)号：US10404499B2

公开(公告)日：2019-09-03

申请号：US15388564

申请日：2016-12-22

申请人： Intel Corporation

发明人： Georgios C. Dogiamis ,  Emanuel Cohen ,  Sasha N. Oster ,  Telesphor Kamgaing

IPC分类号： H04B10/90 ,  H04L25/03 ,  H04J1/08

摘要： Embodiments of the present disclosure may relate to a transmitter that includes a baseband dispersion compensator to perform baseband dispersion compensation on an input signal. Embodiments may also include a receiver that includes a radio frequency (RF) dispersion compensator to perform RF dispersion compensation. Embodiments may also include a dielectric waveguide coupled with the transmitter and the receiver, the dielectric waveguide to convey the RF signal from the transmitter to the receiver. Other embodiments may be described and/or claimed.

公开(公告)号：US10142038B1

公开(公告)日：2018-11-27

申请号：US15675087

申请日：2017-08-11

申请人： Rohde & Schwarz GmbH & Co. KG

发明人： Corbett Rowell ,  Vincent Abadie ,  Werner Kehlenbach

IPC分类号： H04B17/12 ,  H04B7/0413 ,  H04J1/08

摘要： A MIMO signal generator is adapted to generate a MIMO signal is provided. The MIMO signal generator comprises a signal generator, a signal divider and a frequency shifter. The signal generator is adapted to generate a plurality of frequency shifted partial MIMO signals within a first signal generator output signal. The frequency shifted partial MIMO signals being arranged on the frequency axis in a non-overlapping manner. The signal divider is adapted to divide the first signal generator output signal into a plurality of signal paths. The frequency shifter preferably comprises a frequency shifting device in at least one of the plurality of signal paths. The frequency shifting devices are adapted to shift the frequencies of the plurality of frequency shifted partial MIMO signals to a joint carrier frequency, resulting in a plurality of partial MIMO signals, forming the MIMO signal.

公开(公告)号：US20170365394A9

公开(公告)日：2017-12-21

申请号：US14929608

申请日：2015-11-02

申请人： RF Micro Devices, Inc.

发明人： Dirk Robert Walter Leipold ,  George Maxim ,  Marcus Granger-Jones ,  Baker Scott

IPC分类号： H01F27/28 ,  H03H7/38 ,  H03H7/46 ,  H04J1/08 ,  H04B1/40

CPC分类号： H01F27/2804 ,  H01F2027/2809 ,  H01L21/0276 ,  H01L28/10 ,  H01P7/06 ,  H01P7/065 ,  H01P7/08 ,  H03H7/38 ,  H03H7/463 ,  H03H9/24 ,  H04B1/40 ,  H04J1/08

摘要： Embodiments of an apparatus are disclosed that includes a first three dimensional (3D) inductor and a second 3D inductor. The first three dimensional (3D) inductor has a first conductive path shaped as a first two dimensional (2D) lobe laid over a first 3D volume. In addition, the second 3D inductor has a second conductive path, wherein the second 3D inductor is inserted into the first 3D inductor so that the second conductive path at least partially extends through the first 3D volume. Since second 3D inductor is inserted into the first 3D inductor, the 3D inductors may be coupled to one another. Depending on orientation and distances of structures provided by the 3D inductors, the 3D inductors may be weakly or moderately coupled.

公开(公告)号：US20170302342A1

公开(公告)日：2017-10-19

申请号：US15130197

申请日：2016-04-15

申请人： Alcatel-Lucent USA Inc.

发明人： Boris A. Kurchuk

IPC分类号： H04B7/04 ,  H04J1/05 ,  H04J1/08 ,  H04B7/06 ,  H04W88/08

CPC分类号： H04B7/0452 ,  H04B1/0082 ,  H04B1/405 ,  H04B7/0413 ,  H04B7/0626 ,  H04J1/05 ,  H04J1/08 ,  H04W88/08

摘要： An embodiment of the disclosed MIMO transceiver uses a single master clock to generate (i) the sampling-clock signals for the analog-to-digital and digital-to-analog converters and (ii) the multiple electrical local-oscillator signals that are used in various channels of the transceiver's analog down- and up-converters to translate signals between the corresponding intermediate-frequency and RF bands. The MIMO transceiver may employ a plurality of interconnected frequency dividers configured to variously divide the master-clock frequency to generate the sampling-clock signals and the multiple local-oscillator signals in a manner that causes these signals to have different respective frequencies. In embodiments designed for operating in the mmW band, the MIMO transceiver may also employ a frequency multiplier configured to multiply the master-clock frequency to generate an additional local-oscillator signal for translating signals between the mmW and RF bands.

公开(公告)号：US09735890B2

公开(公告)日：2017-08-15

申请号：US14946955

申请日：2015-11-20

申请人： VENCORE LABS, INC.

发明人： Anjali Agarwal ,  James Dailey ,  Paul Toliver ,  Nicholas Peters

IPC分类号： H04B10/70 ,  G06N99/00 ,  H04J14/00 ,  H04J1/08

CPC分类号： H04B10/70 ,  G06N99/002 ,  H04J1/08 ,  H04J14/00

摘要： In one aspect, there is provided a method for transmitting a two-qubit state. The method includes: propagating the two-qubit state onto a transmission waveguide, wherein the propagating includes distributing the two-qubit state about a certain phase; and transmitting the two-qubit state through the transmission waveguide using a pump pulse having the certain phase, wherein the pump pulse is provided in a manner so that the transmission waveguide functions as an optical phase sensitive amplifier (OPSA).