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公开(公告)号：US12095516B2
公开(公告)日：2024-09-17
申请号：US18560209
申请日：2022-05-12
发明人： Stefan Heibl , Michael Pieber , Andreas Schröck
摘要： A transmitter configured to transmit a modulated transmitter data signal in an RF-Field over the air and configured to receive a modulated receiver data signal, which transmitter comprises a transmitter stage configured to generate the modulated transmitter data signal with a particular frequency and waveform based on a carrier signal and an antenna connected to the transmitter stage via a matching circuit of the transmitter and configured to transmit the modulated transmitter data signal in the RF-Field over the air a receiver stage connected via the matching circuit to the antenna and configured to receive the modulated receiver data signal, wherein the transmitter includes a measurement stage to measure an actual resonance frequency (fpeak) of the antenna and its matching circuit connected to the transmitter stage and to the receiver stage.
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公开(公告)号：US12015457B2
公开(公告)日：2024-06-18
申请号：US16420135
申请日：2019-05-22
发明人： Roc Lastinger , John Spenik , Brian C Woodbury
IPC分类号： H04B7/04 , H04B7/024 , H04B7/0413 , H04B7/0456 , H04B7/0495 , H04B17/15
CPC分类号： H04B7/0456 , H04B7/024 , H04B7/0413 , H04B7/0495 , H04B17/15
摘要： A system, method, and computer program product is provided to select at least one channel based on one or more channel characteristics and initiate a first transmission to a first multiple-input-multiple-output (MIMO)-capable portable wireless device, and further initiate a second transmission to a second multiple-input-multiple-output (MIMO)-capable portable wireless device, such that at least a portion of the first transmission occurs simultaneously with at least a portion of the second transmission and both occur via a first wireless protocol; and is further configured to initiate a third transmission to a third multiple-input-multiple-output (MIMO)-capable portable wireless device via a second wireless protocol including a 802.11n protocol, where the first wireless protocol includes another 802.11 protocol other than the 802.11n protocol.
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公开(公告)号：US11909455B2
公开(公告)日：2024-02-20
申请号：US17818692
申请日：2022-08-09
IPC分类号： H04B17/10 , H04L25/03 , H04B7/0413 , H04B17/15
CPC分类号： H04B17/101 , H04B7/0413 , H04B17/15 , H04L25/03006
摘要： A method includes transmitting, by a transceiver configured to concurrently transmit over multiple transmit paths and receive over multiple receive paths, one or more signals, the transceiver comprising multiple transmit antennas and multiple receive antennas. The method also includes, for at least one of the multiple receive antennas: receiving one or more feedback signals from one or more power amplifiers associated with the one or more transmitted signals; calculating one or more estimated self-interference (SI) signals based on the one or more feedback signals using an equalizer array comprising a predetermined channel model; and subtracting the one or more estimated SI signals from one or more receive signals received at the at least one receive antenna to obtain one or more residual signals.
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公开(公告)号：US20240048251A1
公开(公告)日：2024-02-08
申请号：US17817834
申请日：2022-08-05
发明人： Kevin Daniel Escobar , Layne A. Berge , George Paulik , George Russell Zettles, IV , Daniel Ramirez , Jarrett Betke , Karl Erickson , Timothy Clyde Buchholtz , Timothy Lindquist
CPC分类号： H04B17/11 , H04B17/101 , H04B17/15
摘要： One or more systems, devices, and/or methods provided herein relate to a process for in-process radio frequency (RF) signal quality analysis and amplitude adjustment of one or more RF devices. In one or more embodiments, the RF device can comprise a portion of a quantum computing system, such as of readout electronics thereof, and thus amplitude adjustment can be at a waveform generator that generates pulses to affect one or more qubits of a quantum logic circuit of the quantum computing system. Generally, an electronic device can comprise an RF tap connected to an RF signal component of a first RF signal chain, and an analysis component connected to the RF tap, the analysis component configured to convert an RF signal from the RF signal component and to compare a conversion result thereof to an expected power output that is based on historical data for a second RF signal chain.
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公开(公告)号：US11855667B2
公开(公告)日：2023-12-26
申请号：US17569354
申请日：2022-01-05
申请人： VIASAT, Inc.
摘要： Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals.
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6.发明公开公开(公告)号：US20230378984A1
公开(公告)日：2023-11-23
申请号：US18197359
申请日：2023-05-15
申请人： NEC Corporation
发明人： Masaaki TANIO
CPC分类号： H04B1/0475 , H04B17/15 , H04B2001/0425
摘要： A parameter changing device according to the present disclosure includes: a multiplier multiplying a test signal by a back-off rate; a first distortion compensation simulation unit performing distortion compensation processing on a signal acquired by the multiplication, by using a stored parameter; a scaling unit scaling an output signal of the first distortion compensation simulation unit; a second distortion compensation simulation unit performing distortion compensation processing on the test signal, by using a parameter different from the first distortion compensation simulation unit; a differential unit calculating an error between a value of a signal acquired by the scaling and a value of an output signal of the second distortion compensation simulation unit; an approximation error minimization unit calculating a parameter of the second distortion compensation simulation unit minimizing the error; and an output unit outputting a parameter of the second distortion compensation simulation unit to a distortion compensation unit.
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公开(公告)号：US11757542B2
公开(公告)日：2023-09-12
申请号：US17702750
申请日：2022-03-23
发明人： Hui Lin
IPC分类号： H04B17/391 , H01Q3/26 , H04B17/15
CPC分类号： H04B17/15 , H04B17/3912
摘要： Embodiments of the present disclosure provide probe antenna determination methods and apparatuses. An exemplary method includes: determining N probe antenna models from preset M probe antenna models based on signal characteristic parameters of a first signal, where the first signal is a signal obtained after a transmit signal of an analog system is processed by a wireless channel model, the signal characteristic parameters include at least one of the following: a radiation energy value of the first signal in each direction and an angle power spectrum density of the first signal, the N probe antenna models are used to determine a probe antenna for testing a device under test, and both M and N are positive integers.
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公开(公告)号：US11664906B2
公开(公告)日：2023-05-30
申请号：US17410546
申请日：2021-08-24
发明人： Yuan-Shuo Chang , Tzu Ming Kao
CPC分类号： H04B17/11 , H04B1/0483 , H04B17/15 , H04B17/21
摘要： The present application provides a method for calibrating a transmitter. The transmitter includes an oscillator, a first signal path, and a second signal path. The first signal path and the second signal path include a first calibration unit preceding a first low pass filter and a second low pass filter, and a second calibration unit succeeding the first low pass filter and the second low pass filter. The calibration method includes: by configuring the first calibration unit and the second calibration unit and sending a transmission signal, and performing frequency analysis upon the transmission signal to obtain a frequency analysis result, to generate an optimized first compensation value for the first calibration unit and an optimized second compensation value for the second calibration unit.
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公开(公告)号：US11659418B2
公开(公告)日：2023-05-23
申请号：US17429139
申请日：2019-02-19
发明人： Kari Vierimaa , Harri Valasma
摘要： A single radio equipment test device includes a control unit for testing a plurality of antennas, (e.g., an antenna array). The control unit includes a first interface to operatively couple the control unit to an antenna under test, (e.g., arranged in a test chamber). The control unit further includes a second interface to operatively couple the control unit to a reference antenna, (e.g., also arranged in the test chamber). The control unit is configured to control and/or monitor the antenna under test and the reference antenna.
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公开(公告)号：US20220385380A1
公开(公告)日：2022-12-01
申请号：US17871847
申请日：2022-07-22
发明人： Elina Nayebi , Pranav Dayal , Kee-Bong Song
摘要： A method of optimizing at least one IQMC parameter value for an IQMC includes: generating a set of tested IQMC candidate parameter values by performing an iterative method including selecting a first IQMC candidate parameter value for the at least one parameter of the IQMC; determining, using the first IQMC candidate parameter value, a performance metric value that comprises at least one of (i) an image rejection ratio (IRR) value, (ii) a signal-to-interference-plus-noise ratio (SINR) value, or (iii) a signal-to-image ratio (SImR) value; and determining a second IQMC candidate parameter value that is an update to the first IQMC candidate parameter value. The method of optimizing at least one IQMC parameter value for an IQMC further includes determining an IQMC candidate parameter value of the set of tested IQMC candidate parameter values that optimizes the performance metric.
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