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公开(公告)号：US20230031981A1
公开(公告)日：2023-02-02
申请号：US17387547
申请日：2021-07-28
申请人： Wiliot, Ltd.
发明人： Alon YEHEZKELY , Tom COHEN , David LIPSHITZ
摘要： A wireless Internet of things (IoT) tag and a method for measuring energy-charging rate of the energy harvester is provided. The wireless IoT includes at least one antenna configured to harvest an ambient energy; an energy harvester coupled to the at least one antenna; an energy storage coupled to the energy harvester and configured to store harvested energy; and an energy detector configured to the energy storage, wherein the energy detector is configured to measure an energy-charging rate of the energy harvester.
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公开(公告)号：US20230030439A1
公开(公告)日：2023-02-02
申请号：US17387543
申请日：2021-07-28
申请人： Wiliot, Ltd
发明人： Alon YEHEZKELY , Dina LESCHINSKY , Tom COHEN
IPC分类号： H02J50/00 , H03H7/38 , G06K19/07 , G06K19/077
摘要： An energy harvester and a method for tuning an antenna frequency of the energy harvester is provided. The energy harvester includes: a tuner circuit coupled to at least one antenna, wherein the tuner circuit includes at least one adjustable capacitor, wherein the at least one antenna is configured to harvest an electromagnetic ambient energy; a controller connected to the tuner circuit, wherein the controller is configured to control a voltage level within the energy harvester, wherein the controller is configured to iteratively set the at least one adjustable capacitor to tuning states until a best tuning state is set, wherein the best tuning state of the at least one adjustable capacitor substantially matches an antenna frequency and a frequency of the electromagnetic ambient energy; and a rectifier to convert the electromagnetic ambient energy to a direct current.
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公开(公告)号：US20220329153A1
公开(公告)日：2022-10-13
申请号：US17658718
申请日：2022-04-11
申请人： Wiliot, Ltd.
发明人： Alon YEHEZKELY , Ido YOGEV , Tom COHEN
摘要： Apparatus providing a regulated power supply to an oscillator comprises a reference voltage generator supplying a voltage reference, a regulator producing, based on a voltage received thereat, a regulated supply used by the oscillator which bases its frequency thereon, a capacitor having a terminal coupled to the regulator at a point, and a switch that is coupled to the reference voltage generator and to the point, wherein the closed switch couples the reference voltage generator to the point and wherein the open switch disconnects the point from the reference voltage generator, the switch being closed for a first time period during which a voltage based on the voltage reference from the reference voltage generator is supplied to the regulator and capacitor, and for a second, subsequent, time period the switch is opened and voltage stored on the capacitor is supplied to the regulator.
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