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公开(公告)号：US20230142689A1
公开(公告)日：2023-05-11
申请号：US18093291
申请日：2023-01-04
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
CPC classification number: H02J50/23 , H04B1/1607 , H02J50/402
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：US11146113B2
公开(公告)日：2021-10-12
申请号：US16143332
申请日：2018-09-26
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：US20190140349A1
公开(公告)日：2019-05-09
申请号：US15997617
申请日：2018-06-04
Applicant: California Institute of Technology
Inventor： Austin Fikes , Behrooz Abiri , Florian Bohn , Seyed Ali Hajimiri
IPC: H01Q3/26
Abstract: A phased-array includes, in part, N transceivers each including a receiver and a transmitter, and a controller. The phased array is configured to transmit a first radio signal from a first element of the array during a first time period, receive the first radio signal from a second element of the array, recover a first value associated with the radio signal received by the second element, transmit a second radio signal from the second element of the array during a second time period, receive the second radio signal from the first element of the array, recover a second value associated with the radio signal received by the first element, and determine a first phase of a reference signal received by the second element from the recovered first and second values. The first phase is relative to a second phase of the reference signal received by the first element.
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24.发明申请公开(公告)号：US20190006888A1
公开(公告)日：2019-01-03
申请号：US15992089
申请日：2018-05-29
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
CPC classification number: H02J50/40 , H01Q21/225 , H02J50/23 , H02J50/80 , H04B5/00 , H04B5/0037 , H04B7/0617
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：US20180277961A1
公开(公告)日：2018-09-27
申请号：US15897054
申请日：2018-02-14
Applicant: California Institute of Technology
Inventor： Behrooz Abiri , Seyed Ali Hajimiri , Florian Bohn
Abstract: A radiator is formed by forming a multitude of slot antennas adjacent one another such that the spacing between each pair of adjacent slot antennas is smaller than the wavelength of the signal being transmitted or received by the radiator. The radiator achieves high efficiency by reducing the excitation of substrate modes, and further achieves high output power radiation by combining power of multiple CMOS power amplifiers integrated in the radiator structure. Impedance matching to low-voltage CMOS power amplifiers is achieved through lowering the impedance at the radiator ports. Each output power stage may be implemented as a combination of several smaller output power stages operating in parallel, thereby allowing the combination to utilize an effective output device size commensurate with the impedance of the radiator.
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Patent Agency Ranking
公开(公告)号：US20170111073A1
公开(公告)日：2017-04-20
申请号：US15273633
申请日：2016-09-22
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Florian Bohn , Behrooz Abiri
CPC classification number: H04B1/1607 , H02J50/23 , H02J50/40
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：US20160352286A1
公开(公告)日：2016-12-01
申请号：US15170852
申请日：2016-06-01
Applicant: California Institute of Technology
Inventor： Seyed Ali Hajimiri , Behrooz Abiri , Florian Bohn
Abstract: A massively parallel computer system (MPCS) includes a multitude of tiles each adapted to include one or more processing/memory units, power generation unit, and associated circuitry. The tiles are formed in an array of thin, light-weight material that may be foldable and/or collapsible to enable the packaging and folding of the MPCS into a small amount of volume for launch into space. The power generation units may be photovoltaic cells or solar panels that generate DC energy from sun light. The DC energy powers the processing units, memory and other circuits of the MPCS. Heat dissipating structures disposed in the MPCS transfer heat away from the processing/memory unit and into space. Communication between the processing units and earth-based systems may be accomplished using any number of communication protocols and mediums. A control unit disposed in the MPCS may maintain the solar panels towards the sun as the MPCS orbits the earth.
Abstract translation: 大规模并行计算机系统（MPCS）包括多个瓦片，每个瓦片适于包括一个或多个处理/存储器单元，发电单元和相关联的电路。 瓦片形成为薄的，重量轻的材料的阵列，其可以是可折叠和/或可折叠的，以使得MPCS的包装和折叠成少量的体积用于发射到空间中。 发电单元可以是从太阳光产生直流能量的光伏电池或太阳能电池板。 DC电源为MPCS的处理单元，存储器和其他电路供电。 设置在MPCS中的散热结构将热量从处理/存储单元传递到空间。 可以使用任何数量的通信协议和介质来实现处理单元和基于地球的系统之间的通信。 设置在MPCS中的控制单元可以随着MPCS绕地球而将太阳能电池板保持朝向太阳。
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公开(公告)号：US11888218B2
公开(公告)日：2024-01-30
申请号：US16140421
申请日：2018-09-24
Applicant: California Institute of Technology
Inventor： Behrooz Abiri , Florian Bohn , Seyed Ali Hajimiri
CPC classification number: H01Q1/38 , H01Q9/0407 , H01Q9/065 , H01Q19/021
Abstract: An antenna, includes in part, a metal piece formed on a surface of a substrate and configure to radiate electromagnetic waves, a metal feed formed in the substrate and configure to supply electrical signal to the metal piece, and a multitude of metallic walls formed in the substrate and enclosing the metal piece. The antenna may be a patch antenna, a monopole antenna, or a dipole antenna. Each metallic wall may include a via that is fully or partially filled by a metal, or an electroplated tub formed in the substrate. The antenna further includes, in part, a metallic trace formed on the surface of the substrate and enclosing the antenna. The substrate may be a printed circuit board.
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公开(公告)号：US20220278559A1
公开(公告)日：2022-09-01
申请号：US17498656
申请日：2021-10-11
Applicant: California Institute of Technology
Inventor： Seyed Ali Hijimiri , 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：US10727686B2
公开(公告)日：2020-07-28
申请号：US16010318
申请日：2018-06-15
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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