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: 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
  • Patent number: 11327226
    Abstract: A photonics sensing system includes, in part, first and second multipath integrated optical networks, an optical radiator, and an optical receiver. The first multipath integrated optical network includes, in part, N optical delay elements each supplying one of N delayed optical signals of a received optical pulse, N optical modules each supplying a portion of a different one of the N delayed optical signals, and an optical combiner adapted to combine the N delayed portions to generate a modulated optical signal. The smallest of the N delays is smaller than a width of the received optical pulse. The optical radiator is adapted to radiate the modulated optical signal. The optical receiver is adapted to receive a reflection of the transmitted signal. The second multipath integrated optical network is adapted to demodulate the reflected signal received by the optical receiver.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: May 10, 2022
    Assignee: California Institute of Technology
    Inventor: Seyed Ali Hajimiri
  • Patent number: 11322990
    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: Grant
    Filed: March 27, 2019
    Date of Patent: May 3, 2022
    Assignee: Guru Wireless, Inc.
    Inventors: Seyed Ali Hajimiri, Behrooz Abiri, Farhud Tebbi
  • Publication number: 20220123692
    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: Application
    Filed: December 28, 2021
    Publication date: April 21, 2022
    Inventors: Seyed Ali Hajimiri, Behrooz Abiri, Florian Bohn
  • Publication number: 20220113607
    Abstract: A system includes, in part, a multitude of RF receivers, a first optical modulator adapted to modulate an optical signal in accordance with a first data received by a first one of RF receivers to generate a first modulated signal, a second optical modulator adapted to modulate the optical signal in accordance with a second data received by a second RF receiver to generate a second modulated signal, and a first optical fiber adapted to carry the first and second modulated signals. The optical modulator may be a photodiode or a Mach-Zehnder modulator.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 14, 2022
    Inventor: Seyed Ali Hajimiri
  • Patent number: 11264715
    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.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 1, 2022
    Assignee: California Institute of Technology
    Inventors: Austin Fikes, Behrooz Abiri, Florian Bohn, Seyed Ali Hajimiri, Christopher Ian Walker, David Elliot Williams
  • Publication number: 20220060849
    Abstract: A wireless service delivery system determines the position of a device requesting the wireless service and delivers a wireless service to the device if the device's position is determined to fall within a predefined region of a space. The wireless service delivery may deliver no service or a lower quality/slower service if the device is determined to fall outside the predefined region of the space. The coordinates of the points along the perimeter of the predefined region are stored in a memory and are optionally established during a setup phase by moving a localization device along the perimeter of the region of the space.
    Type: Application
    Filed: November 4, 2021
    Publication date: February 24, 2022
    Inventors: Behrooz Abiri, Florian Bohn, Seyed Ali Hajimiri
  • Patent number: 11249369
    Abstract: An optical phased array includes, in part, N optical signal emitting elements, and N lenses each associated with a different one of the N optical signal emitting elements and positioned to form an image of its associated signal emitting element, where N is an integer greater than 1. The optical signal emitting elements may be a grating coupler, an edge coupler, and the like. At least a number of the lenses may be formed from Silicon. The optical phased array may optionally include one or more concave or convex lens positioned between the signal emitting elements and the N lenses. The optical signal emitting elements may be formed in a silicon dioxide layer formed above a semiconductor substrate and the lenses may be formed from Silicon disposed above the silicon dioxide layer. The optical signal emitting elements may receive an optical signal generated by the same source.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: February 15, 2022
    Assignee: California Institute of Technology
    Inventors: Firooz Aflatouni, Seyed Ali Hajimiri
  • Patent number: 11249370
    Abstract: Optical systems and processes for calibrating and focusing optical systems are described. One embodiment of the invention includes an optical phase array (OPA) and an OPA controller that generates control signals to control phase shifters in the OPA. The OPA controller can calibrate the OPA by performing a plurality of phase sweeps using each of a plurality of different basis masks. Each phase sweep can involve performing a phase sweep across a phase sweep range at a plurality of phase step increments with respect to a first group of phase shifters identified in a basis mask. During the phase sweep, a calibration signal can be measured at each of the plurality of phase step increments and the measurements used to generate calibration phase state information. The calibration phase state information can be utilized to perform functions including (but not limited to) beamforming, focusing, and/or other waveform manipulation and control functions.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 15, 2022
    Assignee: California Institute of Technology
    Inventor: Seyed Ali Hajimiri
  • Patent number: 11245471
    Abstract: An optical phased array includes a first multitude of optical transmitting/receiving elements (elements) positioned along a periphery of a first circular path. The phased array may further include a second multitude of optical elements positioned along a periphery of a second circular path concentric with the first circular path, and a third multitude of optical elements positioned along a periphery of a third circular path concentric with the first and second circular paths. The second circular path has a radius that is longer than the radius of the first circular path but shorter than the radius of the third circular. The number of the second multitude of optical elements is greater than the number of the first multitude of optical elements by N elements, and the number of the third multitude of optical elements is greater than the number of the second multitude of optical elements by M elements.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: February 8, 2022
    Assignee: California Institute of Technology
    Inventors: Artsroun Darbinian, Seyed Ali Hajimiri, Aroutin Khachaturian, Seyed Mohammadreza Fatemi
  • Publication number: 20220021114
    Abstract: Disclosed herein is a phased antenna array which is configured to provide a signal through multiple antennas. The phased antenna array may include a plurality of sub-arrays. Each sub-array may include a complete and functional optically synchronized integrated circuit including an integrated photo diode. Advantageously, integrating the photo diode into the integrated circuit may reduce the size of the sub-array and decrease the length the high frequency timing signal is passed.
    Type: Application
    Filed: July 16, 2021
    Publication date: January 20, 2022
    Applicant: California Institute of Technology
    Inventors: Matan Gal, Craig E. Ives, Armina Khakpour, Seyed Ali Hajimiri
  • Publication number: 20210409120
    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: Application
    Filed: March 8, 2021
    Publication date: December 30, 2021
    Inventors: Seyed Mohammadreza Fatemi, Aroutin Khachaturian, Seyed Ali Hajimiri
  • Patent number: 11172322
    Abstract: A wireless service delivery system determines the position of a device requesting the wireless service and delivers a wireless service to the device if the device's position is determined to fall within a predefined region of a space. The wireless service delivery may deliver no service or a lower quality/slower service if the device is determined to fall outside the predefined region of the space. The coordinates of the points along the perimeter of the predefined region are stored in a memory and are optionally established during a setup phase by moving a localization device along the perimeter of the region of the space.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: November 9, 2021
    Assignee: GuRu Wireless, Inc.
    Inventors: Behrooz Abiri, Florian Bohn, Seyed Ali Hajimiri
  • Patent number: 11146113
    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.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 12, 2021
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seyed Ali Hajimiri, Florian Bohn, Behrooz Abiri
  • Patent number: 11131546
    Abstract: An optical gyroscope includes, in part, an optical switch, a pair of optical rings and a pair of photodetectors. The optical switch supplies a laser beam. The first optical ring delivers a first portion of the beam in a clockwise direction during the first half of a period, and a first portion of the beam in a counter clockwise direction during the second half of the period. The second optical ring delivers a second portion of the beam in a counter clockwise direction during the first half of the period, and a second portion of the beam in a clockwise direction during the second half of the period. The first photodetector receives the beams delivered by the first and second optical rings during the first half of the period. The second photodetector receives the beams delivered by the first and second optical rings during the second half of the period.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: September 28, 2021
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Parham Porsandeh Khial, Seyed Ali Hajimiri
  • Patent number: 11128179
    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.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: September 21, 2021
    Assignee: California Institute of Technology
    Inventors: Seyed Ali Hajimiri, Harry A. Atwater, Sergio Pellegrino, Behrooz Abiri, Florian Bohn
  • Publication number: 20210272007
    Abstract: An interface for communicating with qubits, the interface including one or more splitters splitting a plurality of signals from a modulated optical carrier and outputting the signals to a plurality of outputs. In one example, the signals include a plurality of different input signals used for exciting or controlling the one or more qubits. In another example, the signals include a plurality of output signals received from the one or more qubits, wherein the output signals used to read one or more states of the one or more qubits.
    Type: Application
    Filed: March 1, 2021
    Publication date: September 2, 2021
    Applicant: California Institute of Technology
    Inventors: Seyed Mohammadreza Fatemi, Seyed Ali Hajimiri