Patents by Inventor Seyed-Ali Hajimiri

Seyed-Ali Hajimiri has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11616401
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 28, 2023
    Assignee: California Institute of Technology
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Patent number: 11616520
    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.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: March 28, 2023
    Assignee: California Institute of Technology
    Inventors: Seyed Ali Hajimiri, Florian Bohn, Behrooz Abiri
  • Patent number: 11616402
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 28, 2023
    Assignee: California Institute of Technology
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Patent number: 11601183
    Abstract: Spatial redistributors and methods of redistributing signals in accordance with various embodiments of the invention are illustrated. One embodiment includes an array of channels configured to receive and retransmit a signal, where each of a plurality of independently operating channels in the array includes: at least one antenna element; an RF chain configured to apply at least a time delay to the received signal prior to retransmission; control circuitry configured to control the time delay applied to the received signal by the RF chain; and a reference oscillator. In addition, the array of channels is configured to redirect a signal received from a first set of directions for retransmission in a second set of directions; and the control circuitry of the channels in the array of channels coordinates the time delays applied to the received signal across the array of channels to control the wave front of the retransmitted signal.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 7, 2023
    Assignee: California Institute of Technology
    Inventors: Seyed Ali Hajimiri, Austin C. Fikes, Parham Porsandeh Khial
  • Patent number: 11569912
    Abstract: An optical phased array, includes, in part, K beam processors each adapted to receive a different one of K optical signals and generate N optical signals in response. The difference between the phases of optical signals aLM and aL(M+1) is the same for all Ms, where M is an integer ranging from 1 to N?1 defining the signals generated by a beam processor, and L is an integer ranging from 1 to K defining the beam processor generating the K optical signals. The transmitter further includes, in part, a combiner adapted to receive the N×K optical signals from the K beam processors and combine the K optical signals from different ones of the K beam processors to generate N optical signals. The transmitter further includes, in part, N radiating elements each adapted to transmit one of the N optical signals.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: January 31, 2023
    Assignee: California Institute of Technology
    Inventors: Seyed Mohammadreza Fatemi, Aroutin Khachaturian, Seyed Ali Hajimiri
  • Publication number: 20230015084
    Abstract: A quantum phased array comprising one or more arrays of emitter elements each emitting one or more particles having one or more quantum wavefunctions; one or more a phase shifting elements coupled to the emitter elements, each of the phase shifting elements comprising a source of a vector potential applying one or more phase shifts to the one or more quantum wavefunctions; and a control circuit coupled to the one or more phase shifting elements, the control circuit configuring the one or more vector potentials to control an interference of the quantum wavefunctions forming a distribution of the one or more particles at a target, and wherein the distribution is described by a wavefunction interference pattern resulting from the interference controlled by the vector potentials.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 19, 2023
    Applicant: California Institute of Technology
    Inventor: Seyed Ali Hajimiri
  • Publication number: 20220416585
    Abstract: A method of RF power delivery includes, in part, transmitting a first group of RF signals having a first group of phases to a first mobile device during a first time period. The first mobile device has a first position and a first orientation during the first time period. The method further includes, in part, transmitting a second group of RF signals having a second group of phases to the first mobile device during a second time period. The second group of phases are determined in accordance with a second position and a second orientation of the first mobile device during the second time period. The second position and second orientation are determined using sensors disposed in the first mobile device and transmitted via a wireless communications channel to an RF power generating unit transmitting the first and second group of RF signals.
    Type: Application
    Filed: May 2, 2022
    Publication date: December 29, 2022
    Inventors: Seyed Ali Hajimiri, Behrooz Abiri, Farhud Tebbi
  • Patent number: 11536756
    Abstract: A method of setting phases of a multitude of transmit elements of a phased array includes, in part, setting a phase of a first transmit element to N different values during each of N different time intervals, transmitting an electromagnetic signal from the first transmit element at each of the N time intervals, measuring a power of the electromagnetic signal at a receiving unit during each of the N time intervals, and selecting coefficients of a basis function such that a difference between a power value computed by the basis function and the measured power value associated with each of the N phases is smaller than a threshold value. The threshold value is optionally defined by a minimum of the sum of squares of the difference between a power value computed by the basis function and the power value for each of the N phases.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: December 27, 2022
    Assignee: California Institute of Technology
    Inventors: Christopher I. Walker, Seyed Ali Hajimiri
  • Publication number: 20220400217
    Abstract: A coherent imaging system including a transmitter and a receiver. The transmitter includes a coherent source and a power splitter for splitting the electromagnetic radiation into a reference and a signal beam. The receiver includes an image forming device and an array of pixels. Each of the pixels include means for collecting at least a portion of the signal beam imaged on the pixel by an image forming device, as a collected signal; means for splitting the collected signal into a plurality of collected signals each having different phase shifts; means for mixing each of the collected signals with the reference beam so as to form a plurality of mixed signals; and means for detecting the mixed signals and outputting a plurality of output electrical signals in response to the mixed signals.
    Type: Application
    Filed: April 22, 2022
    Publication date: December 15, 2022
    Applicant: California Institute of Technology
    Inventors: Aroutin Khachaturian, Behrooz Abiri, Seyed Mohammadreza Fatemi, Seyed Ali Hajimiri
  • Publication number: 20220399630
    Abstract: A self-deployable antenna and/or antenna array that is made up of one or more antenna elements. Each of the antenna elements has a structural base that supports portions of the antenna and can be positioned between a stored configuration for compaction and a deployed configuration for transmitting. The antenna elements and structural base can be part of a base substrate that provides a base support for the antenna and/or antenna array to be compacted and deployed.
    Type: Application
    Filed: June 15, 2022
    Publication date: December 15, 2022
    Applicant: California Institute of Technology
    Inventors: Austin C. Fikes, Oren Mizrahi, Fabian Wiesemuller, Eleftherios Gdoutos, Alan Truong, Sergio Pellegrino, Seyed Ali Hajimiri
  • Patent number: 11502552
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 15, 2022
    Assignee: California Institute of Technology
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Patent number: 11456532
    Abstract: A phased array includes, in part, M×N photonic chips each of which includes, in part, an array of transmitters and an array of receivers. At least one of M and/or N is an integer greater than one. The transmitter arrays in each pair of adjacent photonics chips are spaced apart by a first distance and the receiver arrays in each pair of adjacent photonics chips are spaced apart by a second distance. The first and second distances are co-prime numbers. Optionally, at least a second subset of the M×N photonic chips is formed by rotating a first subset of the M×N photonic chips.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: September 27, 2022
    Assignee: California Institute of Technology
    Inventors: Aroutin Khachaturian, Seyed Ali Hajimiri, Behrooz Abiri, Seyed Mohammadreza Fatemi
  • Patent number: 11415822
    Abstract: An electro-optical includes, in part, a multitude of phase modulators each of which includes, in part, a p-type semiconductor region, an n-type semiconductor region, and a ?(2) insulating dielectric material disposed between the p-type and n-type semiconductor regions. The electro-optical device may be a phased array in which each phase modulator is associated with a different one of the transmitting elements of the phased array. The ?(2) insulating dielectric material may be an organic polymer. The electro-optical device may further include, in part, a multitude of sensors each associated with a different one of the phase modulators. Each sensor is adapted to receive a phase modulated signal generated by the sensor's associated phase modulator. The electro-optical device may further include, in part, a multitude of amplitude modulators each associated with a different one of the multitude of phase modulators.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: August 16, 2022
    Assignee: California Institute of Technology
    Inventors: Aroutin Khachaturian, Seyed Mohammadreza Fatemi, Seyed Ali Hajimiri
  • Patent number: 11404915
    Abstract: An RF power system, includes, in part, a power generating and a controller. The power generating unit, includes, in part, a first power detector adapted to detect a first amount of RF power radiated by the RF power generating unit and reflected off a living organism. The controller is adapted to reduce the radiated RF power if the first amount of RF power reflected by the living organism is detected as being greater than a predefined amount. The power generating unit may further include a Doppler radar to detect the living organism. The RF power system may further include a power recovery unit that, in turn, includes a second power detector adapted to detect a second amount of RF power radiated by the RF power generating unit and reflected off the living organism.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: August 2, 2022
    Assignee: Guru, Inc.
    Inventors: Florian Bohn, Seyed Ali Hajimiri, Behrooz Abiri
  • Publication number: 20220224168
    Abstract: Disclosed herein is a wireless power delivery system including: a wireless power generation unit (GU) including: a GU antenna array; and a GU wireless communication circuit; and one or more recovery units (RUs), wherein each RU includes: an RU antenna array; and an RU wireless communication circuit. The GU antenna array is configured to use volumetric refocusing to scan the area for the one or more RUs by sweeping a wireless scan signal to be captured by the RU antenna array. The RU antenna array receives the wireless scan signal, the RU wireless communication unit is configured to transmit a wireless signal back to the GU wireless communication unit. The GU is configured to record the focal coordinates of each RU based upon the signal received by the GU from each RU. The GU is configured to emit a wireless power signal to the recorded focal coordinates of each RU.
    Type: Application
    Filed: January 11, 2022
    Publication date: July 14, 2022
    Applicant: GuRu Wireless, Inc.
    Inventors: Behrooz Abiri, Seyed Ali Hajimiri, Mark Lewis
  • Patent number: 11381112
    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.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: July 5, 2022
    Assignee: California Institute of Technology
    Inventors: Behrooz Abiri, Florian Bohn, Seyed Ali Hajimiri
  • Patent number: 11362228
    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. Each solar power station includes a plurality of satellite modules. The plurality of satellite modules each include a plurality of modular power generation tiles including a photovoltaic solar radiation collector, a power transmitter and associated control electronics. Numerous embodiments relate to efficient power generation tiles. In one embodiment, an efficient power generation tile includes: at least one photovoltaic material; and at least one concentrator that redirects incident solar radiation towards a photovoltaic material such that the photovoltaic material experiences a greater solar flux relative to the case where the photovoltaic material experiences unaltered solar radiation.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: June 14, 2022
    Assignee: California Institute of Technology
    Inventors: Harry A. Atwater, Sergio Pellegrino, Seyed Ali Hajimiri, Jeffrey P. Bosco, Dennis Callahan, Emily C. Warmann
  • Patent number: 11342886
    Abstract: An RF power detector adapted to detect an RF power of an RF signal, includes, in part, an antenna adapted to receive the RF signal, a narrow-band RF power converter adapted to convert the RF signal to a DC signal, an accelerometer, and a magnetometer. The accelerometer and magnetometer are adapted to determine the orientation and location of the power detector. The power detector optionally includes a gyroscope. The narrow-band RF power converter may be a rectifier tuned to the frequency of the RF signal. The power detector optionally includes an indicator adapted to provide information representative of the amount of the DC power of the DC signal, as well as position and orientation of the power detector. The power detector may be adapted to be inserted into a mobile device so as to provide the information about the amount of DC power, orientation and position to the mobile device.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 24, 2022
    Assignee: GuRu Wireless, Inc.
    Inventors: Seyed Ali Hajimiri, Behrooz Abiri, Florian Bohn
  • Patent number: 11336373
    Abstract: A co-prime transceiver attains higher fill factor, improved side-lobe rejection, and higher lateral resolution per given number of pixels. The co-prime transceiver includes in part, a transmitter array having a multitude of transmitting elements and a receiver array having a multitude of receiving elements. The distance between each pair of adjacent transmitting elements is a first integer multiple of the whole or fraction of the wavelength of the optical. The distance between each pair of adjacent receiving elements is a second integer multiple of the whole or fraction of the wavelength of the optical signal. The first and second integers are co-prime numbers with respect to one another. The transceiver is fully realizable in a standard planar photonics platform in which the spacing between the elements provides sufficient room for optical routing to inner elements.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: May 17, 2022
    Assignee: California Institute of Technology
    Inventors: Aroutin Khachaturian, Seyed Ali Hajimiri, Behrooz Abiri, Seyed Mohammadreza Fatemi
  • Publication number: 20220146904
    Abstract: An optical phased array includes a first multitude of tiles forming an array of optical signal transmitters and/or receivers. Each such tile includes optical components for processing of an optical signal. The phased array further includes a second multitude of tiles each positioned below one of the first multitude of tiles. Each of the second multitude of tiles includes a circuit for processing of an electrical signal and is in electrical communication with one or more of the first multitude of tiles. Each of the first multitude of tiles is adapted to receive in a modular form, be adjacent to, and couple to at least one additional tile that is similar to that tile. Each of the second multitude of tiles is adapted to receive in a modular form, be adjacent to, and couple to at least one additional tile that is similar to that tile.
    Type: Application
    Filed: October 14, 2021
    Publication date: May 12, 2022
    Inventor: Seyed Ali Hajimiri