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公开(公告)号：US20140055832A1
公开(公告)日：2014-02-27
申请号：US13770980
申请日：2013-02-19
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Firooz Aflatouni , Behrooz Abiri , Seyed Ali Hajimiri
IPC: G02F1/21
Abstract: An optical phased array includes, in part, a multitude of optical signal emitters and a multitude of optical signal phase/delay elements each associated with and disposed between a different pair of the optical signal emitters. Each optical signal phase/delay element is adapted to cause a phase/delay shift between the optical signals emitted from its associated pair of optical signal emitters. Each optical signal phase/delay element is optically a ring resonator that includes a p-i-n junction. By varying the bias applied to the p-i-n junction, the phase/delay generated by the ring resonator is varied. Furthermore, each optical signal emitter is optionally an optical grating having a multitude of grooves. The groove lengths of the optical gratings are optionally selected so as to increase along the direction of travel of the input optical signal through the optical phase array.
Abstract translation: 光相位阵列部分地包括多个光信号发射器和多个光信号相位/延迟元件，每个光信号相位/延迟元件与不同的一对光信号发射器相关联并设置在不同的光信号发射器对之间。 每个光信号相位/延迟元件适于在从其相关联的光信号发射器对发射的光信号之间引起相位/延迟偏移。 每个光信号相位/延迟元件是光学上包括p-i-n结的环形谐振器。 通过改变施加到p-i-n结的偏置，环形谐振器产生的相位/延迟是变化的。 此外，每个光信号发射器可选地是具有多个凹槽的光栅。 可选地选择光栅的槽长度，以沿着输入光信号通过光相阵列的行进方向增加。
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公开(公告)号：US20130322892A1
公开(公告)日：2013-12-05
申请号：US13684018
申请日：2012-11-21
Applicant: California Institute of Technology
Inventor： Firooz Aflatouni , Behrooz Abiri , Seyed Ali Hajimiri
IPC: H04B10/548
CPC classification number: H04B10/548 , H04B10/2504 , H04B10/501 , H04B10/50577 , H04B10/60
Abstract: An integrated optical phased array includes an input channel receiving an optical input signal, and a multitude of signal processing channels each adapted to supply an associated optical output signal along a first axis in response to the input signal. Each signal processing channel includes, in part, a phase modulator adapted to modulate the phase of the signal travelling through the channel, thereby to control or steer the output signal of the phased array. Each channel optionally includes first and second photo detection circuits respectively generating first and second detection signals. The first and second detection signals in each channel may be used to modulate the amplitude and/or phase of the output signal of that channel thereby to control and steer the output signal of the phased array.
Abstract translation: 集成的光学相控阵列包括接收光输入信号的输入通道和多个信号处理通道，每个信号处理通道适于响应输入信号沿第一轴提供相关的光输出信号。 每个信号处理通道部分地包括相位调制器，其适于调制通过通道传播的信号的相位，从而控制或引导相控阵列的输出信号。 每个通道可选地包括分别产生第一和第二检测信号的第一和第二光电检测电路。 每个通道中的第一和第二检测信号可以用于调制该通道的输出信号的幅度和/或相位，从而控制和引导相控阵列的输出信号。
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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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Patent Agency Ranking
公开(公告)号：US10587152B2
公开(公告)日：2020-03-10
申请号：US15604587
申请日：2017-05-24
Applicant: California Institute of Technology
Inventor： Behrooz Abiri , Aroutin Khachaturian , Seyed Ali Hajimiri
Abstract: A wireless laser power transfer system includes, in part, a transmitter and a receiver that form a wireless link. The transmitter, includes, in part, a first communication system, at least a first source of laser beam, and a controller adapted to vary power and direction of the laser beam and further to modulate the laser beam. The receiver includes, in part, a communication system adapted to establish a wireless link with the first communication system, at least a first photo-voltaic cell, and a controller adapted to demodulate and detect the power of the modulated laser beam received by the first photo-voltaic cell from the first source of laser beam. The system optionally includes at least a second source of laser beam controlled by the transmitter controller. The system optionally further includes a second photo-voltaic cell. The transmitter controller is further adapted to cause the second laser beam to strike the second photo-voltaic cell.
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公开(公告)号：US20200059117A9
公开(公告)日：2020-02-20
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：US10527871B2
公开(公告)日：2020-01-07
申请号：US15070665
申请日：2016-03-15
Applicant: California Institute of Technology
Inventor： Saman Saeedi , Behrooz Abiri , Azita Emami , Seyed Ali Hajimiri
Abstract: A differential optical modulator includes, in part, a splitter splitting an incoming optical signal into first and second input signals, a first variable coupler generating a first differential output signal in response to the first input signal, and a second variable coupler generating a second differential output signal in response to the second input signal. The first variable coupler includes, in part, first and second couplers and a phase shifter disposed therebetween. The first coupler generates a pair of internal signals in response to the first input signal. The second coupler generates the first differential output signal. The second variable coupler includes, in part, third and fourth couplers and a phase shifter disposed therebetween. The third coupler generates a pair of internal signals in response to the second input signal. The fourth coupler generates the second differential output signal.
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公开(公告)号：US20190140467A1
公开(公告)日：2019-05-09
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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公开(公告)号：US20190056499A1
公开(公告)日：2019-02-21
申请号：US15896005
申请日：2018-02-13
Applicant: California Institute of Technology
Inventor： Seyed Mohammadreza Fatemi , Aroutin Khachaturian , Behrooz Abiri , Seyed Ali Hajimiri
Abstract: An optical phased array (OPA) includes, in part, a multitude of phase control elements disposed along N rows and M columns forming an N×M array. The phase control elements disposed along ith row are coupled to ith row signal line and phase control elements disposed along jth column are coupled to jth column signal line. The OPA further includes, in part, a row select block having N switches each configured to couple one of the N rows of the phase control elements to a digital-to-analog converter (DAC) in response to a row select signal. The OPA further includes, in part, a column select block having M switches each configured to couple one of the M rows of the phase control elements to a ground terminal in response to a column select signal.
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