公开(公告)号：US20220285817A1

公开(公告)日：2022-09-08

申请号：US17578525

申请日：2022-01-19

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Ali M. Darwish

IPC: H01P5/19 ,  H03H11/16 ,  H03K17/56

Abstract: Switch circuits for electrical power are formed of a hybrid coupler configured to receive a signal as an input, and output first and second pulsed wave signals along first and second signal paths, respectively; in a plurality of time frames, wherein the phases of the first and second pulsed wave signals along first and second signal paths are aligned. The switch circuits may be incorporated in time folding power circuits as an exemplary application.

公开(公告)号：US11342854B1

公开(公告)日：2022-05-24

申请号：US17126256

申请日：2020-12-18

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Damian P. Urciuoli

IPC: H05B45/38 ,  H02M3/335 ,  H05B45/385

Abstract: Novel voltage converter circuits are provided which step-up very low DC input voltages to higher voltages capable of supporting low-power loads. According to embodiments, a voltage step-up power converter circuit may be formed of an oscillator sub-circuit which receives a DC voltage and outputs an AC voltage; a voltage doubler sub-circuit which receives the AC voltage and outputs an augmented AC voltage; and a voltage step-up converter sub-circuit which receives the augmented AC voltage, as a control voltage, and the initial DC voltage and outputs a voltage which is more than the initial DC voltage. These circuits allow electrical energy to be harvested from very low voltage sources and to convert it as efficiently as possible to run a load.

公开(公告)号：US11264980B1

公开(公告)日：2022-03-01

申请号：US17189864

申请日：2021-03-02

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Ali Darwish

IPC: H03K5/06 ,  H03K12/00 ,  H02M7/537 ,  H03K5/26

Abstract: Time folding power combining circuits convert a continuous wave into a pulsed wave of greater peak power. Such a circuit may comprise: a switch which receives a continuous wave signal as input, and outputs first and second pulsed wave signals along first and second signal paths, respectively, said switch being configured to repeatedly switch connection back and forth between the input and the outputs of the first and second signal paths in a plurality of time frames; a delay line in the second signal path configured to introduce a time delay to the second pulsed wave signal in the second signal path such that the first pulsed wave signal in the first signal path and the time-delayed second pulsed wave signal in the second signal path substantially align in the same time frames; and a combiner, which receives the first pulsed wave signal in the first signal path and the time-delayed pulsed second wave signal in the second signal path as inputs, and combines them into a single combined pulsed wave signal as output.

公开(公告)号：US20210402478A1

公开(公告)日：2021-12-30

申请号：US17329811

申请日：2021-05-25

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Isaac Michael Nault ,  Kenneth W. Young ,  Gehn D. Ferguson ,  Aaron T. Nardi

IPC: B22F10/38 ,  B33Y50/02 ,  B22F10/85 ,  B22F10/25 ,  B22F10/34

Abstract: A method of determining a tool path for an additive deposition on a surface, the method including receiving primary edges data of the surface of a three-dimensional (3D) object; calculating a number of raster lines for applying an additive deposition on the surface; mapping a raster pattern to the surface of the 3D object; calculating surface normal and rotational angles along the raster lines; calculating a nozzle velocity of an additive application used for producing the additive deposition on the surface; identifying curvature effects of the 3D object; and establishing an order of performing passes of the additive deposition on the surface based on a selected direction for performing the additive deposition and a consideration of a residual stress profile of a resulting deposit.

公开(公告)号：US20210396868A1

公开(公告)日：2021-12-23

申请号：US16903510

申请日：2020-06-17

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Kenneth I. Ranney ,  David C. Wong ,  Tuan That Ton ,  Brian R. Phelan

IPC: G01S13/88 ,  G01S13/90 ,  G01S7/292

Abstract: Apparatus and method configured to determine locations of man-made objects within synthetic aperture radar (SAR) imagery. The apparatus and method prescreen SAR imagery to identify potential locations of man-made objects within SAR imagery. The potential locations are processed using a change detector to remove locations of natural objects to produce a target image containing location of substantially only man-made objects.

公开(公告)号：US20210087704A1

公开(公告)日：2021-03-25

申请号：US17010242

申请日：2020-09-02

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Ngon T. Tran ,  Daniel B. Knorr ,  Joseph P. Labukas, III

IPC: C25F1/04 ,  C25F7/00

Abstract: Disclosed is an electrolytic cell and method for use of such a cell for surface treatment of discontinuous materials. The electrolytic cell includes a porous electrically conductive mat operably connected to a power supply and a porous structure that is configured to keep a discontinuous material in an electrolyte solution in contact with the porous electrically conductive mat while a surface treatment is being applied.

公开(公告)号：US12179269B2

公开(公告)日：2024-12-31

申请号：US17329811

申请日：2021-05-25

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Isaac M. Nault ,  Kenneth W. Young ,  Gehn D. Ferguson ,  Aaron T. Nardi

IPC: B22F10/38 ,  B22F10/25 ,  B22F10/34 ,  B22F10/85 ,  B33Y50/02 ,  B22F10/80 ,  B29C64/112 ,  B33Y10/00 ,  F03D1/06

Abstract: A method of determining a tool path for an additive deposition on a surface, the method including receiving primary edges data of the surface of a three-dimensional (3D) object; calculating a number of raster lines for applying an additive deposition on the surface; mapping a raster pattern to the surface of the 3D object; calculating surface normal and rotational angles along the raster lines; calculating a nozzle velocity of an additive application used for producing the additive deposition on the surface; identifying curvature effects of the 3D object; and establishing an order of performing passes of the additive deposition on the surface based on a selected direction for performing the additive deposition and a consideration of a residual stress profile of a resulting deposit.

公开(公告)号：US12089385B2

公开(公告)日：2024-09-10

申请号：US17123902

申请日：2020-12-16

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Amir I. Zaghloul ,  Quang Minh Nguyen ,  Eric D. Adler

IPC: H05K9/00 ,  B60J11/00 ,  B64C21/10

CPC classification number: H05K9/0081 ,  B60J11/00 ,  B64C21/10 ,  B64C2230/12

Abstract: A highly-conformal, pliable thin electromagnetic (EM) skin for altering at least one electromagnetic property of a surface includes a pliable thin film, and sub-wavelength elements incorporated into and/or on the pliable thin film which are smaller in scale than the wavelengths of electromagnetic radiation they are intended to influence. The electromagnetic skin readily conforms to contours of a surface to which it attaches or otherwise adheres to. Such electromagnetic skin can be used to cover various surface and platforms on equipment, walls, vehicles, and aircraft to change the electromagnetic properties of such surfaces to achieve certain functions that are not achievable with simple ground plane surfaces. The EM skin may be judiciously configured to alter at least one electromagnetic property of the surface by blocking, absorbing, enhancing, and/or bending waves of electromagnetic radiation.

公开(公告)号：US11674991B2

公开(公告)日：2023-06-13

申请号：US17230346

申请日：2021-04-14

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Kevin C. Cox ,  David H. Meyer ,  Paul D. Kunz

IPC: G01R29/08 ,  H01Q1/50

CPC classification number: G01R29/0885 ,  H01Q1/50

Abstract: Apparatuses and methods are provided that are directed to detecting electric, magnetic, or electromagnetic fields by employing atoms excited to Rydberg states coupled to radio-frequency circuits that include waveguides.

公开(公告)号：US11536881B2

公开(公告)日：2022-12-27

申请号：US17029585

申请日：2020-09-23

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Paul Kunz ,  Fredrik Fatemi ,  Kevin Cox ,  David Meyer

IPC: G02B5/10 ,  H05H3/02 ,  B82Y15/00

Abstract: A conical mirror concentrator is disclosed which is configured for use as a laser-cooled cooled atom source. According to embodiments, the conical mirror concentrator may comprise a body; a reflective inner conical surface formed on the body tapering from a large diameter at a first side of body inward to a smaller dimeter in an interior space of the body, wherein the inner conical surface focuses light to an axis within the interior space of the body; a hole extending from the interior space of the body near a pinnacle of the inner conical surface to a second, opposite side of body; and a structure configured to mount the concentrator to an ultra-high vacuum chamber, such as a CF (or Conflat) flange or an anodicly bonded glass plate.