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公开(公告)号：US11324082B2
公开(公告)日：2022-05-03
申请号：US16401540
申请日：2019-05-02
申请人： NXP USA, Inc.
摘要： A thermal increase system includes one or more multi-level electrodes configured to radiate electromagnetic energy into a cavity in response to receiving a radio frequency (RF) signal from an RF signal source. Each multi-level electrode is positioned adjacent to a wall of the cavity, and each multi-level electrode includes a base portion coupled to an elevated portion. A radiating surface of the elevated portion is at a height of at least 0.5 centimeters (cm) from a radiating surface of the base portion.
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公开(公告)号：US11723121B2
公开(公告)日：2023-08-08
申请号：US16131606
申请日：2018-09-14
申请人： NXP USA, Inc.
CPC分类号： H05B6/688 , H05B6/62 , H05B6/645 , H05B6/6467 , H05B6/664
摘要： A system includes a radio frequency (RF) signal source configured to supply an RF signal. An electrode is coupled to the RF signal source and a transmission path is between the RF signal source and the electrode. The transmission path is configured to convey the RF signal from the RF signal source to the electrode to cause the electrode to radiate RF electromagnetic energy into a cavity. Power detection circuitry is coupled to the transmission path and configured to repeatedly measure RF power values including at least one of forward RF power values and reflected RF power values along the transmission path. A controller is configured to determine that a load in the cavity is a low-loss load based on a rate of change of the RF power values, and cause the RF signal source to supply the RF signal with the one or more desired signal parameters.
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公开(公告)号：US20200351992A1
公开(公告)日：2020-11-05
申请号：US16401540
申请日：2019-05-02
申请人： NXP USA, Inc.
摘要： A thermal increase system includes one or more multi-level electrodes configured to radiate electromagnetic energy into a cavity in response to receiving a radio frequency (RF) signal from an RF signal source. Each multi-level electrode is positioned adjacent to a wall of the cavity, and each multi-level electrode includes a base portion coupled to an elevated portion. A radiating surface of the elevated portion is at a height of at least 0.5 centimeters (cm) from a radiating surface of the base portion.
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公开(公告)号：US20190306933A1
公开(公告)日：2019-10-03
申请号：US16360144
申请日：2019-03-21
申请人： NXP USA, Inc.
发明人： Jamison Michael McCarville , Pierre Marie Jean Piel , James Eric Scott , Lionel Mongin , Jeremie Simon
IPC分类号： H05B6/68
摘要： A defrosting system includes an RF signal source, two electrodes proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrodes, and an impedance matching network electrically coupled along the transmission path between the output of the RF signal source and the electrodes. 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, values of variable capacitors of the impedance matching network to reduce the reflected signal power. The impedance matching network may be a single-ended network or a double-ended network.
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公开(公告)号：US11570857B2
公开(公告)日：2023-01-31
申请号：US16360144
申请日：2019-03-21
申请人： NXP USA, Inc.
发明人： Jamison Michael McCarville , Pierre Marie Jean Piel , James Eric Scott , Lionel Mongin , Jeremie Simon
摘要： A defrosting system includes an RF signal source, two electrodes proximate to a cavity within which a load to be defrosted is positioned, a transmission path between the RF signal source and the electrodes, and an impedance matching network electrically coupled along the transmission path between the output of the RF signal source and the electrodes. 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, values of variable capacitors of the impedance matching network to reduce the reflected signal power. The impedance matching network may be a single-ended network or a double-ended network.
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6.发明授权公开(公告)号：US11484048B2
公开(公告)日：2022-11-01
申请号：US16172650
申请日：2018-10-26
申请人： NXP USA, Inc.
摘要： A system and method for defrosting a load are presented. Radio frequency (RF) signals are supplied to a transmission path that is electrically coupled to one or more electrodes that are positioned proximate to a cavity to cause the one or more electrodes to radiate RF electromagnetic energy. An RF power value of the RF signal along the transmission path is periodically measured resulting in RF power values and a rate of change of the RF power values is determined. A low-loss indicator value is determined using the RF power values, wherein the low-loss indicator value is at least partially determined by a dielectric loss of a load in the cavity. A controller determines, using the rate of change of the RF power values and the low-loss indicator value, that the load is in a defrosted state and stops supplying the RF signals.
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公开(公告)号：US11229094B2
公开(公告)日：2022-01-18
申请号：US16227853
申请日：2018-12-20
申请人： NXP USA, Inc.
摘要： An embodiment of a heating system includes a cavity configured to contain a load, a thermal heating system (e.g., a convection, radiant, and/or gas heating system) in fluid communication with the cavity and configured to heat air, and an RF heating system. The RF heating system includes an RF signal source configured to generate an RF signal, first and second electrodes positioned across the cavity and capacitively coupled, a transmission path electrically coupled between the RF signal source and one or more of the first and second electrodes, and a variable impedance matching network electrically coupled along the transmission path between the RF signal source and the one or more electrodes. At least one of the first and second electrodes receives the RF signal and converts the RF signal into electromagnetic energy that is radiated into the cavity.
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公开(公告)号：US20200170081A1
公开(公告)日：2020-05-28
申请号：US16773619
申请日：2020-01-27
申请人： NXP USA, Inc.
摘要： A system includes a cavity configured to receive a container. The container is configured to contain a plurality of grains. The system includes a radio frequency (RF) signal source configured to supply an RF signal, an impedance matching network electrically coupled to an output of the RF signal source, a transmission path coupled to the impedance matching network, and a first electrode in the cavity. The first electrode is coupled to the transmission path and configured to radiate electromagnetic energy into the cavity as a result of receiving the RF signal. The system includes power detection circuitry configured to measure a magnitude of a reflected signal along the transmission path and a controller configured to modify an impedance transformation performed by the impedance matching network based on the magnitude of the reflected signal.
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