-
公开(公告)号：US11800608B2
公开(公告)日：2023-10-24
申请号：US16131636
申请日：2018-09-14
申请人： NXP USA, Inc.
发明人： Minyang Ma , Xiaofei Qiu , Lionel Mongin
CPC分类号： H05B6/666 , H05B6/6467 , H05B6/688 , H05B6/70
摘要： A defrosting system includes an RF signal source, one or more electrodes proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrode(s), and an impedance matching network electrically coupled along the transmission path between the output of the RF signal source and the electrode(s). The system also includes measurement circuitry coupled to the transmission path and configured to measure one or more parameters that include voltage, current, forward signal power, reflected signal power, and S11 along the transmission path. A system controller is configured to monitor the measurements, and to modify operation of the system when a rate of change of any of the monitored parameter(s) exceeds a predetermined threshold. The impedance matching network may be a single-ended network or a double-ended network.
-
公开(公告)号：US10952289B2
公开(公告)日：2021-03-16
申请号：US16126963
申请日：2018-09-10
申请人： NXP USA, Inc.
摘要： A defrosting system includes an RF signal source, one or more electrodes proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrode(s), and an impedance matching network electrically coupled along the transmission path between the RF signal source output and the electrode(s). A system controller is configured to modify, based on the reflected signal power, values of variable passive components of the impedance matching network to reduce the reflected signal power. The system controller may be configured to estimate the mass of the load by comparing component value(s) of one or more variable passive components of the impedance matching network with a component value table stored in memory, where stored mass values correspond to the stored component values. Desired signal parameters for the RF signal may be determined based on the estimated mass of the load.
-
公开(公告)号：US10771036B2
公开(公告)日：2020-09-08
申请号：US15816802
申请日：2017-11-17
申请人： NXP USA, Inc.
摘要： A system and method for tuning an impedance network of a device is provided. An RF signal is provided through a transmission path connected to an impedance matching network that includes a first variable component and a second variable component. A phase angle between a forward signal and a reflected signal along the transmission path is determined. Based on the phase angle between the forward signal and the reflected signal, the first variable component is modified to improve an impedance match between the RF signal source and the electrode. After modifying the first variable component, a ratio of a power of the reflected signal to a power of the forward signal is determined, and an inductance of the second variable component is modified to reduce the ratio of a power of the reflected signal to a power of the forward signal.
-
公开(公告)号：US20190185349A1
公开(公告)日：2019-06-20
申请号：US15848345
申请日：2017-12-20
申请人： NXP USA, Inc.
发明人： Steven Y. Do , Lionel Mongin
CPC分类号： C02F1/302 , B01J19/126 , B01J2219/0877 , B01J2219/1227 , C02F1/48 , C02F2201/002 , C02F2303/04 , H05B6/686 , H05B6/705 , H05B6/802
摘要： A substance treatment apparatus includes an RF signal source, power detection circuitry, a controller, and a transmission path between the RF signal source and a first electrode that radiates electromagnetic energy into a chamber. The RF signal source includes a solid-state amplifier that generates an RF signal. The power detection circuitry detects reflected signal power along the transmission path. Based on the reflected signal power, the controller modifies values of variable components within an impedance matching network electrically coupled along the transmission path to adjust a magnitude of the reflected signal power. The impedance matching network may have a double-ended input connected to a balun, and a double-ended output connected to the first electrode and to a second electrode. Alternatively, the impedance matching network may have a single-ended input connected to the RF signal source, and a single-ended output connected to the first electrode. The second electrode may be grounded.
-
公开(公告)号：US20190096656A1
公开(公告)日：2019-03-28
申请号：US15719482
申请日：2017-09-28
申请人： NXP USA, Inc.
发明人： Steven Do , Lionel Mongin , Pierre Marie Jean Piel
CPC分类号： H01J65/042 , H01J61/04 , H01J61/95 , H01J65/044 , H01J65/046 , H05B41/2806 , H05B41/39
摘要： An embodiment of a system includes an RF signal source, a first electrode, a second electrode, and a cavity configured to receive an electrodeless bulb. The RF signal source is configured to generate an RF signal. The first electrode is configured to receive the RF signal and to convert the RF signal into electromagnetic energy that is radiated by the first electrode. The cavity is defined by first and second boundaries that are separated by a distance that is less than the wavelength of the RF signal so that the cavity is sub-resonant. The first electrode is physically positioned at the first boundary, and the second electrode is physically positioned at the second boundary. The first electrode, the second electrode, and the cavity form a structure that is configured to capacitively couple the electromagnetic energy into the electrodeless bulb when the electrodeless bulb is positioned within the cavity.
-
6.发明申请公开(公告)号：US20180042074A1
公开(公告)日：2018-02-08
申请号：US15456398
申请日：2017-03-10
申请人： NXP USA, Inc.
摘要： A defrosting system includes an RF signal source, an electrode proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrode, and an impedance matching network electrically coupled along the transmission path between the output of the RF signal source and the electrode. The system also includes power detection circuitry coupled to the transmission path and configured to detect reflected signal power along the transmission path. A system controller is configured to modify, based on the reflected signal power, an inductance value of the impedance matching network to reduce a ratio of the reflected signal power to the forward signal power. The impedance matching network includes a plurality of fixed-value, lumped inductors positioned within a fixed inductor area.
-
公开(公告)号：US11632829B2
公开(公告)日：2023-04-18
申请号：US16812274
申请日：2020-03-07
申请人： NXP USA, Inc.
摘要： A defrosting system includes an RF signal source, an electrode proximate to a cavity within which a load to be defrosted is positioned, and a transmission path between the RF signal source and the electrode. The system also includes power detection circuitry coupled to the transmission path and configured repeatedly to take forward and reflected RF power measurements along the transmission path. A system controller repeatedly determines, based on the forward and reflected RF power measurements, a calculated rate of change, and repeatedly compares the calculated rate of change to a threshold rate of change. When the calculated rate of change compares favorably with the threshold rate of change, the RF signal source continues to provide the RF signal to the electrode until a determination is made that the defrosting operation is completed, at which time the RF signal source ceases to provide the RF signal to the electrode.
-
公开(公告)号：US11621206B2
公开(公告)日：2023-04-04
申请号：US16986088
申请日：2020-08-05
申请人： NXP USA, Inc.
摘要： A device includes a semiconductor die including a transistor. The transistor includes a plurality of parallel transistor elements. Each transistor element includes a drain region, a source region, and a gate region. The semiconductor die includes a first temperature sensor between a first transistor element in the plurality of transistor elements and a second transistor element in the plurality of transistor elements. The first temperature sensor is configured to generate a first output signal having a magnitude that is proportional to a temperature of the first temperature sensor.
-
公开(公告)号：US10648728B2
公开(公告)日：2020-05-12
申请号：US15721436
申请日：2017-09-29
申请人： NXP USA, Inc.
IPC分类号： F25D29/00 , F25D23/12 , F25D21/00 , H01J61/00 , A61L9/22 , A61L9/20 , H05B6/50 , H05B6/62 , F25D17/04 , H05H1/46 , H03F1/56 , H03F3/21
摘要： Example systems have a defrost system that can receive a first RF signal at a first frequency to defrost a load. An air treatment device can receive a second RF signal at a second frequency and perform an air treatment process. An RF signal source has a power output, and a switching arrangement selectively electrically connects the defrost system and the first air treatment device to the power output of the RF signal source. A controller can electrically connect one of the defrost system and the first air treatment device to the power output of the RF signal source. When the defrost system is electrically connected, the RF signal source outputs the first RF signal at the first frequency, and when the first air treatment device is electrically connected, the RF signal source outputs the second RF signal at the second frequency.
-
公开(公告)号：US20200085084A1
公开(公告)日：2020-03-19
申请号：US16570069
申请日：2019-09-13
申请人： NXP USA, Inc.
摘要： A thermal increase system includes a cavity, a first electrode disposed in the cavity, a second electrode disposed in the cavity, and a self-oscillator circuit that produces a radio frequency signal that is converted into electromagnetic energy that is radiated into the cavity by the first and second electrodes. The self-oscillating circuit includes the first electrode and the second electrode. In an embodiment, the first electrode is a first plate in a capacitor structure and the second electrode is a second plate in the capacitor structure. The cavity and a load contained within the cavity operates as a capacitor dielectric of the capacitor structure. A resonant frequency of the self-oscillator circuit is at least partially determined by a capacitance value of the capacitor structure.
-
-
-
-
-
-
-
-
-
搜索结果
38 条记录 (耗时 0.021 秒)
