公开(公告)号：US11021223B2

公开(公告)日：2021-06-01

申请号：US16664635

申请日：2019-10-25

Applicant: California Institute of Technology

Inventor： Austin C. Fikes ,  Seyed Ali Hajimiri

IPC: B63H5/15 ,  B64G1/40 ,  B63G8/16 ,  B63G8/22 ,  B63G8/39 ,  B64G1/44

Abstract: Various embodiments are directed to interconnectable tiles configured for operation in an aquatic environment or a near-zero/zero gravity environment. The interconnectable tiles are configured to interconnect relative to one another to form interconnected surfaces, and individual interconnectable tiles provide thrust, ballast, and/or buoyancy to the overall interconnected surface so as to move the interconnected surface in a desired configuration.

公开(公告)号：US12136772B2

公开(公告)日：2024-11-05

申请号：US17683100

申请日：2022-02-28

Applicant: California Institute of Technology

Inventor： Austin C. Fikes ,  Behrooz Abiri ,  Florian Bohn ,  Seyed Ali Hajimiri ,  Christopher Ian Walker ,  David Elliot Williams

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.

公开(公告)号：US20230155649A1

公开(公告)日：2023-05-18

申请号：US18057052

申请日：2022-11-18

Applicant: California Institute of Technology

Inventor： Seyed Ali Hajimiri ,  Oren Mizrahi ,  Austin C. Fikes

IPC: H04B7/06 ,  H01Q21/29

CPC classification number: H04B7/0608 ,  H01Q21/29

Abstract: Disclosed herein is a reconfigurable phased array and a method for determining the current configuration of a phased array. Certain disclosed embodiments include a reconfigurable phased array including a constellation of antennas configured to receive and transmit radiation towards a far field target. Each of the antennas senses incidental power from the retransmitted radiation from the other antennas of the constellation of antennas. This incidental power may be referred to as mutual coupling. The reconfigurable phased array further includes a computer system configured to: measure the incidental power sensed by the each of the antennas; perform a physical constraint mapping of the constellation of antennas; perform an array shape construction to determine a current position of all the elements based on the physical constraint mapping of the constellation of antennas and the incidental power sensed by each of the antennas.

公开(公告)号：US12289147B2

公开(公告)日：2025-04-29

申请号：US18057052

申请日：2022-11-18

Applicant: California Institute of Technology

Inventor： Seyed Ali Hajimiri ,  Oren Mizrahi ,  Austin C. Fikes

IPC: H04B7/06 ,  H01Q21/29

Abstract: Disclosed herein is a reconfigurable phased array and a method for determining the current configuration of a phased array. Certain disclosed embodiments include a reconfigurable phased array including a constellation of antennas configured to receive and transmit radiation towards a far field target. Each of the antennas senses incidental power from the retransmitted radiation from the other antennas of the constellation of antennas. This incidental power may be referred to as mutual coupling. The reconfigurable phased array further includes a computer system configured to: measure the incidental power sensed by the each of the antennas; perform a physical constraint mapping of the constellation of antennas; perform an array shape construction to determine a current position of all the elements based on the physical constraint mapping of the constellation of antennas and the incidental power sensed by each of the antennas.

公开(公告)号：US11601183B2

公开(公告)日：2023-03-07

申请号：US16723943

申请日：2019-12-20

Applicant: California Institute of Technology

Inventor： Seyed Ali Hajimiri ,  Austin C. Fikes ,  Parham Porsandeh Khial

IPC: H04B7/06 ,  H04B7/02 ,  H04L1/08

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.

公开(公告)号：US20220399630A1

公开(公告)日：2022-12-15

申请号：US17807051

申请日：2022-06-15

Applicant: California Institute of Technology

Inventor： Austin C. Fikes ,  Oren Mizrahi ,  Fabian Wiesemuller ,  Eleftherios Gdoutos ,  Alan Truong ,  Sergio Pellegrino ,  Seyed Ali Hajimiri

IPC: H01Q1/08 ,  H01Q1/50 ,  H01Q9/16

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.

公开(公告)号：US20210105092A1

公开(公告)日：2021-04-08

申请号：US17122783

申请日：2020-12-15

Applicant: California Institute of Technology

Inventor： Seyed Ali Hajimiri ,  Austin C. Fikes ,  Parham Porsandeh Khial ,  Samir Nooshabadi

IPC: H04L1/08 ,  H04B7/06

Abstract: Scalable decentralized 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 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 steer a signal of a first frequency in a first direction and steer a signal of a second frequency in a second direction different from the first direction to create a dual beam redistributor.