公开(公告)号：US12034235B2

公开(公告)日：2024-07-09

申请号：US17530303

申请日：2021-11-18

Applicant: HRL Laboratories, LLC

Inventor： Walter S. Wall ,  Randall L. Kubena ,  Harris P. Moyer

IPC: H01Q9/14 ,  H01Q1/22 ,  H03H7/38 ,  H03H9/00

CPC classification number: H01Q9/14 ,  H01Q1/22 ,  H03H7/38 ,  H03H9/0004

Abstract: A RF transmitting device and method for transmitting digital information wherein the device is connected to or connectable with an antenna, the RF transmitting device having an RF source or transmitter, an electronic switch, a plurality electromechanical resonators each connected to the electronic switch. The electronic switch connects a selected one or selected ones of the electromechanical resonators between the RF source or transmitter and the antenna. Alternatively, the electronic switch connects a selected one or selected ones of the electromechanical resonators between different portions of the antenna. The electronic switch is controlled by a digital control unit for causing the electronic switch to couple RF energy produced by the RF source or transmitter to the antenna via the selected one or selected ones of the plurality of electromechanical resonators.

公开(公告)号：US11988727B1

公开(公告)日：2024-05-21

申请号：US16932427

申请日：2020-07-17

Applicant: HRL Laboratories, LLC

Inventor： Randall L. Kubena ,  Walter S. Wall

IPC: G01R33/022 ,  H03B5/32 ,  H10N30/87 ,  H10N35/80 ,  H10N35/85

CPC classification number: G01R33/022 ,  H03B5/323 ,  H10N35/80 ,  H10N35/85 ,  H10N30/871

Abstract: A magnetic gradiometer sensor comprising a substrate with at least a pair of resonators disposed thereon, wherein each of the at least a pair of resonators is coated with a magnetostrictive film. The resonators are preferably connected to sustaining circuits to form oscillators and the oscillators are preferably used within a phase lock loop to detect a difference in the magnetic field between the at least a pair of resonators.

公开(公告)号：US11606098B1

公开(公告)日：2023-03-14

申请号：US17677849

申请日：2022-02-22

Applicant: HRL Laboratories, LLC

Inventor： Randall L. Kubena ,  Walter S. Wall ,  Gabriel Virbila

IPC: H03L7/099 ,  H03B5/04 ,  H03B5/32 ,  H03L7/081

Abstract: A comb enhanced oscillator in which a drive signal from a first oscillator is split into two signals. The first signal is applied to a nonlinear resonator producing a phononic frequency comb of equally spaced resonances. The second signal is passed through an amplitude detector and a phase shifter. In one embodiment, the comb is applied to the phase shifter to correct for AM-PM cross-correlation noise and then applied to a phase lock loop (PLL) for locking to a second oscillator. The output of the second oscillator is used as the output of the comb enhanced oscillator.

公开(公告)号：US11506493B1

公开(公告)日：2022-11-22

申请号：US16745285

申请日：2020-01-16

Applicant: HRL Laboratories, LLC

Inventor： Logan D. Sorenson ,  Raviv Perahia ,  David T. Chang ,  Randall L. Kubena ,  Deborah J. Kirby ,  Hung Nguyen ,  Richard J. Joyce

IPC: G01C25/00 ,  G01C19/5776 ,  G01C19/5684 ,  H03L7/26 ,  H03G3/20

Abstract: An angular rate sensor. The sensor includes a Coriolis vibratory gyroscope (CVG) resonator, configured to oscillate in a first normal mode and in a second normal mode; a frequency reference configured to generate a reference signal; and a first phase control circuit. The first phase control circuit is configured to: measure a first phase difference between: a first phase target, and the difference between: a phase of an oscillation of the first normal mode and a phase of the reference signal. The first phase control circuit is further configured to apply a first phase correction signal to the CVG resonator, to reduce the first phase difference. A second phase control circuit is similarly configured to apply a second phase correction signal to the CVG resonator, to reduce a corresponding, second phase difference.

公开(公告)号：US10697772B1

公开(公告)日：2020-06-30

申请号：US16277610

申请日：2019-02-15

Applicant: HRL LABORATORIES, LLC

Inventor： Logan D. Sorenson ,  Raviv Perahia ,  David T. Chang ,  Randall L. Kubena ,  Deborah J. Kirby ,  Hung Nguyen ,  Richard J. Joyce

IPC: G01C19/5726 ,  G01C19/5755

Abstract: A sensor includes an acceleration or magnetic field sensitive microelectromechanical systems (MEMS) resonator, configured to oscillate in at least a first normal mode and a second normal mode. The sensor further includes: a coarse readout circuit configured to drive the first normal mode, measure a motion of the first normal mode, and derive from the measured motion a coarse measurement of the true acceleration or true external magnetic field; and a fine readout circuit configured to drive the second normal mode, measure a motion of the second normal mode, and derive from the measured motion and the coarse measurement a measurement of the difference between the true acceleration or true external magnetic field and the coarse measurement.

公开(公告)号：US10444014B1

公开(公告)日：2019-10-15

申请号：US15253694

申请日：2016-08-31

Applicant: HRL Laboratories, LLC

Inventor： Logan D. Sorenson ,  Raviv Perahia ,  David T. Chang ,  Randall L. Kubena ,  Deborah J. Kirby ,  Hung Nguyen ,  Richard J. Joyce

IPC: G01C19/5726 ,  G01C19/5755

Abstract: An angular sensor. The angular sensor includes a Coriolis vibratory gyroscope (CVG) resonator, configured to oscillate in a first pair of normal modes including a first normal mode and a second normal mode and a second pair of normal modes including a third normal mode and a fourth normal mode. The angular sensor further includes a coarse readout circuit configured to drive the first pair of modes, measure the motion of the first pair of modes, and derive from the measured motion of the first pair of modes a coarse measurement of an angular rate of the resonator. The angular sensor further includes and a fine readout circuit configured to derive a measurement of the difference between the true angular rate of the resonator and the coarse measurement.

公开(公告)号：US09046541B1

公开(公告)日：2015-06-02

申请号：US13648041

申请日：2012-10-09

Applicant: HRL LABORATORIES LLC ,  The Boeing Company

Inventor： Randall L. Kubena ,  David T. Chang ,  Robert L. Larson

IPC: H04R31/00 ,  G01P1/00

CPC classification number: G01P1/00 ,  G01C19/5684 ,  H03H3/0072 ,  H03H9/02244 ,  H03H9/0552 ,  H03H9/1057 ,  H03H9/2436 ,  H03H2009/02283 ,  H03H2009/02496

Abstract: A method for producing a disk resonator gyroscope includes providing a base substrate and a handle wafer with a release hole, bonding a release wafer to the handle wafer, bonding a resonator wafer to the release wafer, etching the resonator wafer to form a disk resonator with a central pillar, and sense and drive electrodes, selectively applying a conductive film onto the disk resonator on a side of the disk resonator opposite the release wafer, on the outer edge of the disk resonator, and on the surfaces of the sense and drive electrodes facing the outer edge of the disk resonator, bonding the sense and drive electrodes and the central pillar of the disk resonator to the base substrate, and releasing the handle wafer by introducing a dry release agent into the release hole to undercut the release wafer.

Abstract translation: 一种盘式谐振器陀螺仪的制造方法，其特征在于，具备提供基板和带有释放孔的手柄晶片，将释放晶片接合在手柄晶片上，将振荡片贴合到剥离晶片，蚀刻谐振晶片，形成具有 中央支柱，以及感测和驱动电极，在圆盘谐振器的外边缘上，在盘谐振器的与隔离晶片相反的一侧的盘谐振器上选择性地施加导电膜，并且在感测和驱动电极的表面上 面对盘式谐振器的外边缘，将感测和驱动电极以及盘式谐振器的中心支柱粘合到基底基板上，并通过将释放孔引入释放孔中以释放释放晶片来释放手柄晶片。

公开(公告)号：US08994465B1

公开(公告)日：2015-03-31

申请号：US13742250

申请日：2013-01-15

Applicant: HRL Laboratories, LLC

Inventor： Randall L. Kubena ,  Richard J. Joyce ,  Harris P. Moyer

IPC: H03B5/32 ,  H03L7/00 ,  H03B5/36 ,  H03B5/10

CPC classification number: H03B5/36 ,  H03B5/10 ,  H03B5/366 ,  H03B2200/009

Abstract: A method for reducing the phase noise of a oscillator includes monitoring a phase slope of a resonator, and controlling the resonator to operate the resonator at a high phase slope condition, wherein the resonator comprises a piezoelectric material, or piezoelectric quartz.

Abstract translation: 一种用于降低振荡器的相位噪声的方法包括监视谐振器的相位斜率，并且控制谐振器以高相位斜率条件操作谐振器，其中谐振器包括压电材料或压电石英。

公开(公告)号：US12191867B1

公开(公告)日：2025-01-07

申请号：US18208894

申请日：2023-06-13

Applicant: HRL Laboratories, LLC

Inventor： Randall L. Kubena ,  Walter S. Wall

IPC: H03L7/093 ,  H03L7/099

Abstract: A phononic frequency comb enhanced clock, including a nonlinear resonator configured to generate a phononic frequency comb in response to a drive signal and an AM-to-PM noise correction circuit. The AM-to-PM noise correction circuit includes a transfer function circuit which includes a two-channel PLL and a DSP. The two-channel PLL has one channel input with the phononic frequency comb and another channel input with at least a portion of the drive signal. The DSP is configured to periodically divide a PM noise of a predetermined tooth of the phononic frequency comb by an AM noise of the portion of the drive signal to generate periodically updated noise correction signals. The clock further includes a phase shifter having an input coupled to an output of the digital signal processor and another input connected to a frequency signal of a preselected tooth of the phononic frequency comb.

公开(公告)号：US11747512B1

公开(公告)日：2023-09-05

申请号：US16932447

申请日：2020-07-17

Applicant: HRL Laboratories, LLC

Inventor： Randall L. Kubena ,  Logan D. Sorenson

IPC: G01V7/00 ,  G01V7/04

CPC classification number: G01V7/005 ,  G01V7/04

Abstract: A method and apparatus for for sensing a change in an acceleration gradient δa(t) between two gravity fields a1(t) and a2(t) respectively sensed by the first and second proof masses, the first and second proof masses either being coupled only to a first resonator or being individually coupled to first and second resonators, the first resonator generating, in use, a signal at a frequency fD which is applied said second resonator, the second resonator being driven, in use, into a non-linear state corresponding to a modal resonant frequency fΘ wherein it generates a comb of frequencies each tooth of which is separated from each other by a frequency Δ which is frequency-wise proportional a frequency difference between fD and fΘ and also proportional to the change in said acceleration gradient δa(t), circuitry for selecting an nth tooth in said comb of frequencies where the frequency of the nth tooth is equal to fD+nΔ, circuitry for detecting a change in the frequency of the nth tooth and for generating a signal that is proportional to n times the change in an acceleration gradient δa(t).