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公开(公告)号：US11927617B2
公开(公告)日：2024-03-12
申请号：US17267841
申请日：2019-08-13
摘要： There is provided an apparatus (20) for monitoring a condition of an electrical power transmission medium (22), the apparatus (20) comprising: a signal source (24) for transmitting a signal (30) to travel along the electrical power transmission medium (22); and a monitoring device (26) configured to detect one or more reflected signals (34) in the electrical power transmission medium (22), wherein the monitoring device (24) is configured to use the or each detected reflected signal (34) to determine a change in capacitance of the electrical power transmission medium (22).
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2.发明授权公开(公告)号：US11874234B2
公开(公告)日：2024-01-16
申请号：US18100518
申请日：2023-01-23
摘要： Methods and systems for RF pulse monitoring and RF pulsing parameter optimization at a manufacturing system are provided. A radio frequency (RF) signal is pulsed within a processing chamber in accordance with a set of process parameters. Sensor data is received from one or more sensors that indicates a RF pulse waveform detected within the processing chamber. One or more RF signal characteristics are identified in the detected RF pulse waveform. Each identified RF signal characteristic corresponds to at least one RF signal pulse of the RF signal pulsing within the processing chamber. A determination is made, based on the identified one or more RF signal characteristics, whether the detected RF pulse waveform corresponds to the target RF pulse waveform. An indication of whether the detected RF pulse waveform corresponds to the target RF pulse waveform is provided to a client device.
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公开(公告)号：US11774475B2
公开(公告)日：2023-10-03
申请号：US17374697
申请日：2021-07-13
摘要： A reflectometer may include two directional couplers in a parallel configuration, sharing the same section of a signal line or through-line. For example, two directional couplers may be disposed across from each other on opposite sides of the shared through-line. One of the directional couplers may couple, to a first port of the reflectometer, a portion of the signal power of a first signal flowing from the first end of the shared through-line to the second end of the shared through-line, and the other directional coupler may couple, to a second port of the reflectometer, a portion of the signal power of a second signal flowing from the second end of the shared through-line to the first end of the shared through-line. The reflectometer benefits from reduced size and signal loss with respect to reflectometers having a serial configuration. When used in vector network analyzer (VNA) systems, this results in higher output power and higher dynamic range of the VNA.
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公开(公告)号：US20220291265A1
公开(公告)日：2022-09-15
申请号：US17197457
申请日：2021-03-10
申请人： Dell Products L.P.
发明人： Steven Jay Lash
摘要： A self-calibrating transmission line resonator oscillating driver apparatus, including: a first output driver module configured to transmit a first forward signal along a transmission line; a second output driver module configured to transmit a second forward signal along the transmission line; a first reflection detection module configured to detect a first return signal of the first forward signal reflected along the transmission line; and a second reflection detection module configured to detect a second return signal of the second forward signal reflected along the transmission line; wherein, when the first reflection detection module detects the first return signal of the first forward signal reflected along the second direction of the transmission line, providing a signal to i) change a power state of the first output driver module to an off-power state and to ii) change a power state of the second output driver module to an on-power state.
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公开(公告)号：US20220214389A1
公开(公告)日：2022-07-07
申请号：US17683847
申请日：2022-03-01
摘要： Various examples are provided related to anisotropic constitutive parameters (ACPs) that can be used to launch Zenneck surface waves. In one example, among others, an ACP system includes an array of ACP elements distributed above a medium such as, e.g., a terrestrial medium. The array of ACP elements can include one or more horizontal layers of radial resistive artificial anisotropic dielectric (RRAAD) elements positioned in one or more orientations above the terrestrial medium. The ACP system can include vertical lossless artificial anisotropic dielectric (VLAAD) elements distributed above the terrestrial medium in a third orientation perpendicular to the horizontal layer or layers. The ACP system can also include horizontal artificial anisotropic magnetic permeability (HAAMP) elements distributed above the terrestrial medium. The array of ACP elements can be distributed about a launching structure, which can be excited with an electromagnetic field to facilitate the launch of a Zenneck surface wave.
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公开(公告)号：US11193966B1
公开(公告)日：2021-12-07
申请号：US16839579
申请日：2020-04-03
申请人： Christos Tsironis
发明人： Christos Tsironis
摘要： A low frequency active load pull tuner allows creating and controlling the reflection factor in a different frequency range than the operation frequency. It includes an active feedback loop and a remotely controlled digital electronic tuner, wherein the electronic tuner operates at an ordinary octave wide (Fmax/Fmin=2) frequency range (i.e. as an example 1-2 GHz), which leads to a low intermediate frequency band of 6 octaves or more. All required MHz range components for the tuner, except the custom-made digital electronic tuner, are readily available.
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公开(公告)号：US11119136B1
公开(公告)日：2021-09-14
申请号：US16445646
申请日：2019-06-19
申请人： Christos Tsironis
发明人： Christos Tsironis
摘要： A multi-octave hybrid harmonic load pull tuner comprises a slabline with an adjustable signal coupler (wave-probe) and two multi-carriage slide screw tuners, one in the feedback signal injection loop and one as a pre-matching transformer. The wave-probe controls the static amplitude and phase of the feedback signal and the harmonic tuner in the loop controls the actual amplitude and phase of the re-injected signal at each harmonic frequency separately. De-embedding fast calibration and search routines allow identifying tuner states satisfying instantaneously impedance targets over the entire harmonic spectrum.
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公开(公告)号：US10979089B2
公开(公告)日：2021-04-13
申请号：US16599641
申请日：2019-10-11
发明人： Daeyoung Kim , Youngik Cho
摘要： A device for measuring a reflection coefficient of an antenna by using a radio frequency (RF) feedback signal provided by a coupler based on an RF transmission signal provided to the antenna includes a feedback circuit configured to generate a baseband feedback signal by down-converting and filtering the RF feedback signal, and a signal processing device configured to control the down-converting, based on a target frequency band, process a baseband transmission signal and the baseband feedback signal to have the target frequency band, and calculate a reflection coefficient of the antenna corresponding to the target frequency band. The RF transmission signal is generated from the baseband transmission signal.
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公开(公告)号：US20210072296A1
公开(公告)日：2021-03-11
申请号：US16564604
申请日：2019-09-09
IPC分类号： G01R27/06
摘要： Provided is a method for collecting sensor data using time-domain reflectometry (TDR). A master device transmits a TDR signal to a first sensor. A reflected signal is received in response to the transmitted TDR signal. The reflected signal is analyzed to determine an impedance of the first sensor. Based on the impedance of the first sensor, a sensor value for the first sensor is determined.
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公开(公告)号：US10684317B2
公开(公告)日：2020-06-16
申请号：US15823844
申请日：2017-11-28
发明人： Martin Leibfritz , Werner Held
摘要： A vector network analyzer for obtaining at least one wave frequency ratio with respect to a frequency-converting device under test is provided. The vector network analyzer comprises a transmitter side configured to be controlled by at least one transmitter side clock signal, a receiver side configured to be controlled by at least one receiver side clock signal, and a central clock configured to generate a central clock signal. The at least one transmitter side clock signal and the at least one receiver side clock signal are based on the central clock signal, the at least one transmitter side clock signal and the at least one receiver side clock signal are generated with a fixed phase relation to each other with the aid of a start pulse.
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