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公开(公告)号：US11695198B1
公开(公告)日：2023-07-04
申请号：US17864322
申请日：2022-07-13
Applicant: HRL Laboratories, LLC
Inventor： Carson R. White , Walter S. Wall
CPC classification number: H01Q1/30 , H04B7/18504
Abstract: A system for subsurface transmission includes an array of very low frequency (VLF) transmitter nodes supported by semi-autonomous maritime, airborne, or space platforms spaced at regular intervals from their nearest neighbors and phased to localize VLF coverage to some desired area on a body of water.
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公开(公告)号：US11569684B1
公开(公告)日：2023-01-31
申请号：US16867411
申请日：2020-05-05
Applicant: HRL Laboratories, LLC
Inventor： Carson R. White , Walter S. Wall , Christopher P. Henry , Christopher S. Roper , James H. Schaffner , Ignacio Ramos
Abstract: An energy conversion device disposed in series with an RF driver circuit and an RF antenna, the energy conversion device being arranged to convert a portion of available RF power from the RF driver circuit into a different form of energy (direct current, thermal, or higher frequency electromagnetic waves such as light) which is converted, if needed, to DC and stored in an energy storage device coupled with the RF driver circuit for supplying recycled electrical energy thereto. The RF antenna may be an electrically small antenna and thus a antenna matching network may be provided between the RF driver circuit and the RF antenna. The energy conversion device may comprise, for example, (i) a transformer in combination with a rectifying circuit, (ii) a full wave rectifier, (iii) a half wave rectifier, (iv) a heat and/or light producing device, an energy converter (such as a generator) or a combination of the foregoing.
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公开(公告)号：US11183760B2
公开(公告)日：2021-11-23
申请号：US16554260
申请日：2019-08-28
Applicant: HRL Laboratories, LLC
Inventor： Carson R. White
Abstract: An antenna system having a Vivaldi antenna configured to be impedance matched to antenna impedance Za at and above but not below a frequency fc; a Field-Effect-Transistor buffer coupled to the Vivaldi antenna, the length of the coupling between the antenna terminals and the buffer being of a distance much less than a wavelength at frequency fc, the buffer configured to present a high impedance at frequencies substantially
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公开(公告)号：US10340889B1
公开(公告)日：2019-07-02
申请号：US15275151
申请日：2016-09-23
Applicant: HRL Laboratories, LLC
Inventor： Zhiwei A. Xu , Carson R. White , Jonathan J. Lynch
Abstract: A method of and an apparatus for reducing noise in a non-Foster circuit having at least a pair of cross coupled transistor devices, each transistor device of the pair of cross coupled transistor devices having a pair of current carrying electrodes. The method and apparatus involves coupling inductors with each pair of the current carrying electrodes of each of the cross-coupled transistor devices in the non-Foster circuit, the inductors also being coupled with voltage and/or current sources associated with or coupled to the non-Foster circuit. The nominal values of the inductors are selected to provide a load asymmetry, so that the load inductor in the input side of the non-Foster circuit has a larger inductance than the load inductor at the output side of non-Foster circuit.
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公开(公告)号：US09923548B1
公开(公告)日：2018-03-20
申请号：US15098259
申请日：2016-04-13
Applicant: HRL Laboratories, LLC
Inventor： Carson R. White , Brian Hughes
Abstract: A switched mode negative inductance circuit includes an input node responsive to a voltage signal. The circuit also includes first and second voltage sources, first and second controlled switches having first poles coupled to the first and second voltage sources, respectively and an inductor having a first electrode coupled to second poles of the first and second controlled switches and a second electrode coupled to the input node. The input node is coupled to a control electrode of the first controlled switch, and to a control electrode of the second controlled switch through a voltage inverting circuit. The disclosure also illustrates balanced negative inductance circuits and implementation approaches using NMOS transistors.
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Patent Agency Ranking
公开(公告)号：US09705201B2
公开(公告)日：2017-07-11
申请号：US14628076
申请日：2015-02-20
Applicant: HRL LABORATORIES LLC
Inventor： Carson R. White , Daniel J. Gregoire
CPC classification number: H01Q15/002 , H01Q15/0013 , H01Q15/0066 , H01Q15/008 , H01Q15/142 , H01Q15/148 , H05K1/165 , H05K2203/08 , H05K2203/162
Abstract: An active artificial magnetic conductor includes an array of unit cells, each unit cell including a top face, at least one wall coupled to the top face, a base coupled to the at least one wall, and a crossed slot in the top face. The top face, the at least one wall, and the base form a cavity and are conductive.
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7.发明授权公开(公告)号：US09276554B2
公开(公告)日：2016-03-01
申请号：US13856403
申请日：2013-04-03
Applicant: HRL LABORATORIES, LLC
Inventor： Jonathan J. Lynch , Carson R. White
CPC classification number: H03H7/485 , H01Q1/523 , H01Q3/26 , H01Q21/0006 , H01Q21/14 , H01Q21/20 , H01Q21/28 , H03H7/48 , H03H7/52
Abstract: A four port antenna decoupling network which has only two negative capacitors and four or more positive capacitors and a method of improving low frequency receiving performance of two element and four element antenna arrays using one or more wideband decoupling circuits wherein each of said wideband decoupling circuits contain a maximum of two non-Foster components, the two non-Foster components preferably simulating negative capacitors.
Abstract translation: 仅具有两个负电容器和四个或更多个正电容器的四端口天线去耦网络和使用一个或多个宽带去耦电路改善两个元件和四元件天线阵列的低频接收性能的方法，其中每个所述宽带去耦电路包含 最多两个非福斯特分量，两个非福斯特分量最好模拟负电容。
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公开(公告)号：US11145982B2
公开(公告)日：2021-10-12
申请号：US15638052
申请日：2017-06-29
Applicant: HRL Laboratories, LLC
Inventor： Walter S. Wall , Hyok J. Song , Randall L. Kubena , Carson R. White
IPC: H01Q9/14 , H01Q1/22 , H01Q9/04 , H01Q13/10 , H01Q1/36 , H01Q9/06 , H01Q13/18 , H01Q5/357 , H01Q9/30 , H01Q9/16 , H01Q23/00 , H01Q1/34
Abstract: An antenna system having at least one active element with a first end thereof for connection to a radio receiver, transmitter or transceiver and at least one electromechanical resonator connected in series with (i) at least portion of said at least one active element and at least another portion of said at least one active element or (ii) said at least one active element and said radio receiver, transmitter or transceiver. The at least one active element exhibits capacitive reactance at an intended frequency of operation and the at least one electromechanical resonator exhibits inductive reactance at the intended frequency of operation, the inductive reactance of the at least one electromechanical resonator offsetting or partially offsetting the capacitive reactance of the at least one antenna element at the intended frequency of operation.
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公开(公告)号：USRE48528E1
公开(公告)日：2021-04-20
申请号：US15842793
申请日：2017-12-14
Applicant: HRL LABORATORIES, LLC
Inventor： Carson R. White , Jonathan J. Lynch
Abstract: An antenna array containing two or more radiating elements, with nearest neighbor radiating elements connected together with a non-Foster circuit at terminals of the radiating elements such that mutual reactance of the elements is reduced over a wider bandwidth than which would be obtained if the non-Foster circuits were omitted.
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公开(公告)号：US20200099143A1
公开(公告)日：2020-03-26
申请号：US16554274
申请日：2019-08-28
Applicant: HRL Laboratories, LLC
Inventor： Carson R. White , Hyok J. Song
Abstract: A wideband active antenna system comprising an antenna having N outputs and a nominal bandwidth, each of the N outputs being directly coupled to an associated buffer amplifier, with a distance between the N outputs and a first active stage of each associated buffer amplifier preferably being maintained as short as reasonably possible and preferably no greater than ¼ wavelength of any transmission and/or receiving frequency of the wideband active antenna system and/or preferably no greater than 0.1 wavelength of any transmission and/or receiving frequency in an extension band of frequencies lower than a lowest frequency in the nominal bandwidth of the antenna.
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