Elwha LLC

Echodyne Corp.

The Invention Science Fund I LLC

Duke University

Searete LLC

Tom Driscoll

David R Smith

Yaroslav Aleksandrovich Urzhumov

John Desmond Hunt

Nathan Ingle Landy

Roderick A Hyde

Clarence T Tegreene

Jordin T Kare

Lowell L Wood, Jr

Milton Perque, Jr

Muriel Y Ishikawa

Victoria Y H Wood

Nathan P Myhrvold

Siamak Ebadi

Melroy Machado

Robert Tilman Worl

Pai-Yen Chen

Tony S Pan

Charles A Renneberg

Charles Whitmer

David Brady

Alexander Mrozack

Ioannis Tzanidis

Robert C Petroski

Jesse R Cheatham, Iii

Christopher L Lambrecht

Jeffrey A Bowers

Adam Bily

Daniel Marks

Matthew Carl Reynolds

Muhammad Rameez Chatni

Russell J Hannigan

Joseph R Guerci

Benjamin Sikes

Felix D Yuen

Nicholas K Brune

Eric Leuthardt

Elizabeth A Sweeney

William Henry Gates, Iii

Alistair K Chan

Desney S Tan

Paul Henry Dietz

Guy Shlomo Lipworth

Nicholas W Touran

David Lawrence Tennenhouse

Jonathan R Hull

Tarron Teeslink

Joel Cherkis

Neil Jordan

Patrick Neill

Gary Wachowicz

Jay Howard McCandless

Aanand Esterberg

Kerem Karadayi

Alexander Galt Hyde

Yianni Tzanidis

Milton Perque

Skyler Martens

William F Graves, Jr

Dominic Chun Kit Wu

David Bazeley Tuckerman

William David Duncan

Eric James Black

Alexander Remley Katko

Brian Mark Deutsch

Nathan Landy

Jason E Jerauld

An embodiment of a radar subsystem includes at least one antenna and a control circuit. The at least one antenna is configured to radiate at least one first transmit beam and to form at least one first receive beam. And the control circuit is configured to steer the at least one first transmit beam and the at least one first receive beam over a first field of regard during a first time period, and to steer the at least one first transmit beam and the at least one first receive beam over a second field of regard during a second time period.

Intelligent sensor and intelligent feedback-based dynamic control of a parameter of a field of regard to which the sensor is directed

In an embodiment, an antenna subsystem includes a sparse receive antenna and an electronically steerable transmit antenna. The sparse receive antenna includes an array of electronically steerable receive elements each configured to receive a respective signal having a wavelength and each spaced apart from each adjacent one of the receive elements by a respective first distance that is more than one half of the wavelength, has an aperture, and is configured to generate a receive beam pattern. And the electronically steerable transmit antenna includes an array of transmit elements each configured to radiate a respective signal having the wavelength and each spaced apart from each adjacent one of the transmit elements by a respective second distance that is less than one half of the wavelength, has an aperture that is significantly smaller than the aperture of the sparse receive antenna, and is configured to filter, spatially, the receive beam pattern.

Antenna subsystem with analog beam-steering transmit array and sparse hybrid analog and digital beam-steering receive array

In an embodiment, an antenna subsystem includes a sparse receive antenna and an electronically steerable transmit antenna. The sparse receive antenna includes an array of electronically steerable receive elements each configured to receive a respective signal having a wavelength and each spaced apart from each adjacent one of the receive elements by a respective first distance that is more than one half of the wavelength. And the electronically steerable transmit antenna includes an array of transmit elements each configured to radiate a respective signal having the wavelength and each spaced apart from each adjacent one of the transmit elements by a respective second distance that is less than one half of the wavelength. To reduce aliasing, such an antenna subsystem can be operated to filter, spatially, a receive beam pattern generated by the receive antenna with a transmit beam pattern generated by the transmit antenna.

An embodiment an antenna unit of an antenna array includes a signal coupler, a phase-shifting modulator, and an antenna element. The signal coupler has a first input-output port, a second input-output port, and a coupled port. The phase-shifting modulator is coupled to the coupled port of the signal coupler, and the antenna element is coupled to the phase-shifting modulator via a connection remote from the signal coupler, or via an isolated port of the signal coupler. The phase-shifting modulator is configured for both relatively low signal loss and relatively low power consumption such that the antenna array can have significantly lower C-SWAP metrics than a conventional phased array while retaining the higher performance metrics of a conventional phased array.

Antenna unit with phase-shifting modulator, and related antenna, subsystem, system, and method

According to an embodiment, an antenna includes a conductive antenna element, a voltage-bias conductor, and a polarization-compensation conductor. The conductive antenna element is configured to radiate a first signal having a first polarization, and the voltage-bias conductor is coupled to a side of the antenna element and is configured to radiate a second signal having a second polarization that is different from the first polarization. And the polarization-compensating conductor is coupled to an opposite side of the antenna element and is configured to radiate third a signal having a third polarization that is approximately the same as the second polarization and that destructively interferes with the second signal. Such an antenna can be configured to reduce cross-polarization of the signals that its antenna elements radiate.

Beam-steering antenna

An embodiment of an antenna includes first and second transmission lines, first antenna elements, and second antenna elements. The first transmission line is configured to guide a first signal such that the first signal has a characteristic of a first value, and the second transmission line is configured to guide a second signal such that the second signal has the same characteristic but of a second value that is different than the first value. The first antenna elements are each disposed adjacent to the first transmission line and are each configured to radiate the first signal in response to a respective first control signal, and the second antenna elements are each disposed adjacent to the second transmission line and are each configured to radiate the second signal in response to a respective second control signal. Such an antenna can have better main-beam and side-lobe characteristics, and a better SIR, than prior antennas.

Antenna having increased side-lobe suppression and improved side-lobe level

An embodiment of an antenna array includes a transmit antenna and a receive antenna. The transmit antenna has, in one dimension, a first size, and has, in another dimension that is approximately orthogonal to the one dimension, a second size that is greater than the first size. And the receive antenna has, in approximately the one dimension, a third size that is greater than the first size, and has, in approximately the other dimension, a fourth size that is less than the second size. For example, such an antenna array, and a radar system that incorporates the antenna array, can provide a high Rayleigh resolution (i.e., a narrow Half Power Beam Width (HPBW)) with significantly reduced aliasing as compared to prior antenna arrays and radar systems for a given number of antenna-array channels.

Antenna array that includes analog beam-steering transmit antenna and analog beam-steering receive antenna arranged orthogonally to the transmit antenna, and related subsystem, system, and method

In an embodiment, an antenna unit for an antenna array allows shifting the phase of a radiated or received signal without the need for a phase shifter, and includes an antenna element, switching devices, and signal couplers. The antenna element includes at least one section and signal ports each electrically isolated from each other and from each of the at least one section. The switching devices are each configured to couple a respective one of the signal ports to one of the at least one section in response to a respective control signal, and the signal couplers are each configured to couple a respective one of the signal ports to a respective location of a respective transmission medium.

Phase-selectable antenna unit and related antenna, subsystem, system, and method

In an embodiment, an antenna includes a one-dimensional array of antenna cells, a signal feed, and signal couplers. The antenna cells are each spaced from an adjacent antenna cell by less than one half a wavelength at which the antenna cells are configured to transmit and to receive, are configured to generate an array beam that is narrower in a dimension than in an orthogonal dimension, and are configured to steer the array beam in the dimension. And the signal couplers are each configured to couple a respective one of the antenna cells to the signal feed in response a respective control signal having an active level. For example, the antenna cells can be arranged such that a straight line intersects their geometric centers.

Antenna array having a different beam-steering resolution in one dimension than in another dimension

Modulation patterns for surface scattering antennas provide desired antenna pattern attributes such as reduced side lobes and reduced grating lobes.

Modulation patterns for surface scattering antennas

The present disclosure provides systems and methods associated with mode conversion for electromagnetic field modification. A mode converting structure (holographic metamaterial) is formed with a distribution of dielectric constants chosen to convert an electromagnetic radiation pattern from a first mode to a second mode to attain a target electromagnetic radiation pattern that is different from the input electromagnetic radiation pattern. A solution to a holographic equation provides a sufficiently accurate approximation of a distribution of dielectric constants that can be used to form a mode converting device for use with one or more transmission lines, such as waveguides. One or more optimization algorithms can be used to improve the efficiency of the mode conversion.

Holographic mode conversion for transmission lines

Surface scattering antennas with lumped elements provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the surface scattering antenna is a multi-layer printed circuit board assembly, and the lumped elements are surface-mount components placed on an upper surface of the printed circuit board assembly. In some approaches, the scattering elements are adjusted by adjusting bias voltages for the lumped elements. In some approaches, the lumped elements include diodes or transistors.

Surface scattering antennas with lumped elements

In an embodiment, an antenna subsystem includes a sparse receive antenna and an electronically steerable transmit antenna. The sparse receive antenna includes an array of receive elements each configured to receive a respective signal having a wavelength and each spaced apart from each adjacent one of the receive elements by a respective first distance that is more than one half of the wavelength. And the electronically steerable transmit antenna includes an array of transmit elements each configured to radiate a respective signal having the wavelength and each spaced apart from each adjacent one of the transmit elements by a respective second distance that is less than one half of the wavelength. To reduce aliasing, such an antenna subsystem can be operated to filter, spatially, a receive beam pattern generated by the receive antenna with a transmit beam pattern generated by the transmit antenna.

Antenna subsystem with analog beam-steering transmit array and digital beam-forming receive array

A method for facilitating physiological data acquisition includes scheduling a medical appointment between a patient and a medical provider. The medical appointment is to be conducted at a medical provider location on an appointment date. The method also includes selecting a medical device configured to acquire physiological data regarding the patient. The method further includes sending, to a fulfillment system, a request to provide the medical device to a patient location prior to the appointment date. The patient location is remote from the medical provider location.

Systems and methods for facilitating physiological data collection prior to appointment

Growing community of inventors

San Diego, CA, United States of America

Tom Driscoll