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公开(公告)号：US10904962B2
公开(公告)日：2021-01-26
申请号：US15577887
申请日：2016-06-03
发明人： Davide Guatta , Franco Brindani , Adriano Scaburri
摘要： An electromagnetic cooking device includes an enclosed cavity; a set of radio frequency feeds configured to introduce electromagnetic radiation into the enclosed cavity to heat up and prepare food; a set of high-power radio frequency amplifiers coupled to the set of radio frequency feeds, each high-power amplifier comprising at least one amplifying stage configured to output a signal that is amplified in power with respect to an input radio frequency signal; a signal generator coupled to the set of high-power radio frequency amplifiers for generating the input radio frequency signal, and a controller. The controller can be configured to, among other things, cause the signal generator and selected ones of the set of high-power amplifiers to output a radio frequency signal, select from a set of phase values of radio frequency electromagnetic waves, and identify the resonant modes excited within the enclosed cavity.
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公开(公告)号：US10911051B2
公开(公告)日：2021-02-02
申请号：US16311271
申请日：2016-12-21
摘要： An electromagnetic energy delivery system includes a set of radio frequency channels; each channel configured to receive a set of reference signals. Each channel further includes a compensation component and a phase-locked loop component. The compensation component can be configured to determine a phase difference between at least a subset of the reference signals; compare the phase difference with a predetermined reference phase difference; and determine a reference signal compensation offset value based on the comparison of the phase difference and the predetermined reference phase difference. The phase-locked loop component can be configured to generate a phase-shifted signal wherein the phase shift is based on at least the reference signal compensation offset value.
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公开(公告)号：US11246191B2
公开(公告)日：2022-02-08
申请号：US16312320
申请日：2016-09-22
摘要： An electromagnetic energy delivery system includes a set of radio frequency channels. Each channel includes a radio frequency feed, at least one high-power amplifier and a phase-shifting component. Each high-power radio frequency amplifier includes at least one amplifying component configured to output a periodic signal that is amplified in power with respect to an input radio frequency common reference signal. The phase-shifting component is configured to modulate the phase of the output periodic signal with respect to the input radio frequency signal. A controller coupled to the set of radio frequency channels can be configured to cause the output periodic signals from each of the radio frequency channels is to have a time-varying phase difference relative to the common reference signal and a phase difference relative to the other output periodic signals that is constant when averaged over time.
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公开(公告)号：US20200304127A1
公开(公告)日：2020-09-24
申请号：US16311271
申请日：2016-12-21
摘要： An electromagnetic energy delivery system includes a set of radio frequency channels; each channel configured to receive a set of reference signals. Each channel further includes a compensation component and a phase-locked loop component. The compensation component can be configured to determine a phase difference between at least a subset of the reference signals; compare the phase difference with a predetermined reference phase difference; and determine a reference signal compensation offset value based on the comparison of the phase difference and the predetermined reference phase difference. The phase-locked loop component can be configured to generate a phase-shifted signal wherein the phase shift is based on at least the reference signal compensation offset value.
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公开(公告)号：US20180177005A1
公开(公告)日：2018-06-21
申请号：US15577887
申请日：2016-06-03
发明人： Davide Guatta , Franco Brindani , Adriano Scaburri
CPC分类号： H05B6/686 , H05B6/687 , H05B6/70 , H05B2206/044 , Y02B40/143
摘要： An electromagnetic cooking device includes an enclosed cavity; a set of radio frequency feeds configured to introduce electromagnetic radiation into the enclosed cavity to heat up and prepare food; a set of high-power radio frequency amplifiers coupled to the set of radio frequency feeds, each high-power amplifier comprising at least one amplifying stage configured to output a signal that is amplified in power with respect to an input radio frequency signal; a signal generator coupled to the set of high-power radio frequency amplifiers for generating the input radio frequency signal, and a controller. The controller can be configured to, among other things, cause the signal generator and selected ones of the set of high-power amplifiers to output a radio frequency signal, select from a set of phase values of radio frequency electromagnetic waves, and identify the resonant modes excited within the enclosed cavity.
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公开(公告)号：US11804807B2
公开(公告)日：2023-10-31
申请号：US16312329
申请日：2016-12-30
摘要： An RF generation system is provided for an electromagnetic cooking device having a cavity. The system includes: a signal generator for generating an input RF signal; an RF feed configured to introduce electromagnetic radiation into the cavity and to receive reflected electromagnetic radiation from the cavity; and a high-power amplifier coupled between the signal generator and the RF feed. The high-power amplifier including an amplifying stage configured to output a signal that is amplified in power, and a circulator for directing the amplified output signal to the RF feed and for redirecting any reflected radiation received from the RF feed to a dummy load. The system further includes a hardware protection component for detecting backward power in the reflected radiation and for reducing power supplied to the amplifying stage if the backward power exceeds a power threshold within a time scale that prevents damage to the circulator.
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公开(公告)号：US20190312555A1
公开(公告)日：2019-10-10
申请号：US16312329
申请日：2016-12-30
摘要： An RF generation system is provided for an electromagnetic cooking device having a cavity. The system includes: a signal generator for generating an input RF signal; an RF feed configured to introduce electromagnetic radiation into the cavity and to receive reflected electromagnetic radiation from the cavity; and a high-power amplifier coupled between the signal generator and the RF feed. The high-power amplifier including an amplifying stage configured to output a signal that is amplified in power, and a circulator for directing the amplified output signal to the RF feed and for redirecting any reflected radiation received from the RF feed to a dummy load. The system further includes a hardware protection component for detecting backward power in the reflected radiation and for reducing power supplied to the amplifying stage if the backward power exceeds a power threshold within a time scale that prevents damage to the circulator.
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