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公开(公告)号：US11381112B2
公开(公告)日：2022-07-05
申请号：US16933784
申请日：2020-07-20
Applicant: California Institute of Technology
Inventor： Behrooz Abiri , Florian Bohn , Seyed Ali Hajimiri
Abstract: A power bank includes, in part, a rechargeable battery, a wireless power recovery unit adapted to receive power wirelessly, a battery charging circuit adapted to deliver the power recovered by the power recovery unit to the rechargeable battery, an output interface, and a voltage reconditioning circuit adapted to supply power from the rechargeable battery to the output interface for delivery to an external device. The wireless power recovery unit may include one or more of a multitude of photodiodes adapted to convert a coherent optical signal to electrical power, an acoustic transducer adapted to convert acoustic waves to an electrical power, an inductive coupling circuit adapted to convert time varying magnetic flux to electrical power, and an RF power recovery unit adapted to convert an RF signal to electrical power.
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公开(公告)号：US10673351B2
公开(公告)日：2020-06-02
申请号：US16004198
申请日：2018-06-08
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Behrooz Abiri , Florian Bohn
Abstract: A rectifying circuit includes, in part, first and second NMOS transistors, an impedance matching network, and an RF block circuit. The source and gate terminals of the first NMOS transistor respectively receive the ground potential and a biasing voltage. The second NMOS transistor has a gate terminal coupled to the drain terminal of the first NMOS transistor, a drain terminal coupled to the gate terminal of the first NMOS transistor, and a source terminal receiving the ground potential. The impedance matching network is disposed between the antenna and the drain terminals of the first and second NMOS transistors. The RF block circuit is coupled between the drain terminals of the first and second NMOS transistors and the output terminal of the rectifying circuit. The RF block circuit is adapted to prevent the RF signal from flowing into the output terminal of the rectifying circuit.
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公开(公告)号：US11616520B2
公开(公告)日：2023-03-28
申请号：US15273633
申请日：2016-09-22
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
Abstract: A device includes, in part, an antenna adapted to receive an RF signal that includes modulated data, a splitter/coupler adapted to split the received RF signal, a receiver adapted to demodulate the data from a first portion of the RF signal, and a power recovery unit adapted to convert to a DC power a second portion of the RF signal. The splitter/coupler is optionally adjustable to split the RF signal in accordance with a value that may be representative of a number of factors, such as the target data rate, the DC power requirement of the device, and the like. The device optionally includes a switch and/or a power combiner adapted to deliver all the received RF power to the receiver depending on any number of operation conditions of the device or the device's distance from an RF transmitting device.
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公开(公告)号：US11128179B2
公开(公告)日：2021-09-21
申请号：US14712856
申请日：2015-05-14
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Harry A. Atwater , Sergio Pellegrino , Behrooz Abiri , Florian Bohn
IPC: B64G1/10 , B64G1/42 , H02S20/30 , H02S40/00 , H02S40/30 , H02J50/90 , H02J50/80 , B64G1/44 , B64G1/66 , B64G1/22 , H01L31/042 , H02S30/20 , H01L31/041 , H04B7/185 , H02J50/23 , H02J50/40 , H02J3/38 , H02J3/46 , B64G1/40 , B64G1/28 , B64G1/36
Abstract: A space-based solar power station, a power generating satellite module and/or a method for collecting solar radiation and transmitting power generated using electrical current produced therefrom is provided. Power transmitters can be coordinated as a phased array and the power generated by the phased array is transmitted to one or more power receivers to achieve remote wireless power generation and delivery. In many embodiments, a reference signal is distributed within the space-based solar power station to coordinate the phased array. In several embodiments, determinations of the relative locations of the antennas in the array are utilized to evaluate the phase shift and/or amplitude modulation to apply the reference signal at each power transmitter.
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公开(公告)号：US11095164B2
公开(公告)日：2021-08-17
申请号：US16109591
申请日：2018-08-22
Applicant: California Institute of Technology
Inventor： Florian Bohn , Behrooz Abiri , Seyed Ali Hajimiri
Abstract: A method of generating a DC power from incident RF waves, includes, in part, measuring the amount of power being received by a device generating the DC power, and controlling the phases of the RF waves being transmitted by a multitude of RF transmitters in accordance with the measured power. A programmable test load is optionally used at the device to measure the received power. The device optionally includes, an antenna, an RF-to-DC converter to generate the DC power, an impedance matching/transformation circuit, and an RF load/matching circuit.
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Patent Agency Ranking
公开(公告)号：US20210083511A1
公开(公告)日：2021-03-18
申请号：US16933784
申请日：2020-07-20
Applicant: California Institute of Technology
Inventor： Behrooz Abiri , Florian Bohn , Seyed Ali Hajimiri
IPC: H02J50/10
Abstract: A power bank includes, in part, a rechargeable battery, a wireless power recovery unit adapted to receive power wirelessly, a battery charging circuit adapted to deliver the power recovered by the power recovery unit to the rechargeable battery, an output interface, and a voltage reconditioning circuit adapted to supply power from the rechargeable battery to the output interface for delivery to an external device. The wireless power recovery unit may include one or more of a multitude of photodiodes adapted to convert a coherent optical signal to electrical power, an acoustic transducer adapted to convert acoustic waves to an electrical power, an inductive coupling circuit adapted to convert time varying magnetic flux to electrical power, and an RF power recovery unit adapted to convert an RF signal to electrical power.
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公开(公告)号：US10749593B2
公开(公告)日：2020-08-18
申请号：US15233830
申请日：2016-08-10
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
IPC: H03F3/04 , H04B7/185 , H03F3/19 , H02S40/30 , H03F3/68 , H03F1/02 , H03F3/45 , H03F3/24 , B64G1/42 , H04B7/06 , H04L25/08 , H04L27/152 , H04L27/26
Abstract: Many embodiments of the invention include stacked power amplifier configurations that include control circuitry for sensing the operational characteristics of the power amplifiers and adjusting the current drawn by one or more of the power amplifiers to prevent any of the power amplifiers from experiencing over voltage stresses and/or to increase the operational efficiency of the power amplifiers.
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8.发明授权公开(公告)号：US10720797B2
公开(公告)日：2020-07-21
申请号：US15992089
申请日：2018-05-29
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
Abstract: A method of determining the phases of a multitude of transmitting elements of an RF power generating unit, includes, in part, activating one of transmitting element during the first time period, turning off the remaining transmitting elements during the first time period, transmitting an RF signal from the activated transmitting element to a device to be charged during the first time period, detecting a first phase value associated with the RF signal at the device during the first time period, transmitting the detected first phase value from the device to the generating unit during the first time period, and adjusting the phase of the activated transmitting element in response to the detected first phase value.
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公开(公告)号：US10320242B2
公开(公告)日：2019-06-11
申请号：US14552414
申请日：2014-11-24
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
Abstract: An RF signal generator wirelessly transferring power to a wireless device includes, in part, a multitude of generating elements generating a multitude of RF signals transmitted by a multitude of antennas, a wireless signal receiver, and a control unit controlling the phases and/or amplitudes of the RF signals in accordance with a signal received by the receiver. The signal received by the receiver includes, in part, information representative of the amount of RF power the first wireless device receives. The RF signal generator further includes, in part, a detector detecting an RF signal caused by scattering or reflection of the RF signal transmitted by the antennas. The control unit further controls the phase and/or amplitude of the RF signals in accordance with the signal detected by the detector.
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公开(公告)号：US20190044390A1
公开(公告)日：2019-02-07
申请号：US16143332
申请日：2018-09-26
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
CPC classification number: H02J50/23 , H01Q21/225 , H02J7/025 , H02J50/40 , H02J50/60 , H02J50/80 , H02J50/90
Abstract: An RF signal generator wirelessly transferring power to a wireless device includes, in part, a multitude of generating elements generating a multitude of RF signals transmitted by a multitude of antennas, a wireless signal receiver, and a control unit controlling the phases and/or amplitudes of the RF signals in accordance with a signal received by the receiver. The signal received by the receiver includes, in part, information representative of the amount of RF power the first wireless device receives. The RF signal generator further includes, in part, a detector detecting an RF signal caused by scattering or reflection of the RF signal transmitted by the antennas. The control unit further controls the phase and/or amplitude of the RF signals in accordance with the signal detected by the detector.
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