公开(公告)号：US09054500B2

公开(公告)日：2015-06-09

申请号：US13865921

申请日：2013-04-18

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Patty Chang-Chien ,  Kelly Jill Hennig ,  Xianglin Zeng ,  Jeffrey M. Yang

IPC: H01T4/16 ,  H03G11/00 ,  H01P1/14 ,  H01L23/60

CPC classification number: H01T4/16 ,  H01L23/60 ,  H01L2924/0002 ,  H01P1/14 ,  H03G11/002 ,  H03G11/004 ,  H01L2924/00

Abstract: A plasma power limiter fabricated using wafer-level fabrication techniques with other circuit elements. The plasma limiter includes a signal substrate and a trigger substrate defining a hermetically sealed cavity therebetween in which is encapsulated an ionizable gas. The signal substrate includes a signal line within the cavity and the trigger substrate includes at least one trigger probe extending from the trigger substrate towards the transmission line. If a signal propagating on the transmission line exceeds a power threshold, the gas within the cavity is ionized creating a conduction path between the transmission line and the trigger probe that draws off the high power current.

Abstract translation: 使用晶圆级制造技术与其他电路元件制造的等离子体功率限制器。 等离子体限制器包括信号基板和触发基板，其在其间限定密封腔，其中封装有可电离气体。 信号衬底包括腔内的信号线，并且触发衬底包括从触发衬底朝向传输线延伸的至少一个触发探针。 如果在传输线上传播的信号超过功率阈值，则空腔内的气体被电离，在传输线和触发探头之间产生一个导通路径，从而消除高功率电流。

公开(公告)号：US20170254622A1

公开(公告)日：2017-09-07

申请号：US15057574

申请日：2016-03-01

Applicant: Northrop Grumman Systems Corporation

Inventor： David W. Evans ,  Gregory L. Larson ,  Jeffrey M. Yang

IPC: F41G7/22 ,  B64D7/00 ,  F41G7/00 ,  B64C39/02

CPC classification number: F41G7/2206 ,  B64C39/024 ,  B64C2201/121 ,  B64C2201/141 ,  B64C2201/146 ,  B64D7/00 ,  F41G3/04 ,  F41G7/007 ,  F41G7/2233 ,  F41G7/30

Abstract: A manned aircraft and unmanned aerial vehicles (UAVs) fly on a mission as a team. The UAVs carry additional weapons and/or munitions that can be controlled by the manned aircraft. The pilot of the manned aircraft selects weapons or munitions carried by either the manned aircraft or one of the UAVs. A display in the manned aircraft illustrates weapons available on both the manned aircraft and UAVs. The pilot of the manned aircraft picks a weapon from the display and then targets and fires the weapon. The targeting and guidance of the weapon can be carried out using computers on the manned aircraft and/or computers on the UAV.

公开(公告)号：US10649067B1

公开(公告)日：2020-05-12

申请号：US15335283

申请日：2016-10-26

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Jeffrey M. Yang ,  Eric B. Nakamura ,  A. Dale Parker

IPC: G01S7/02 ,  G01S13/02

Abstract: A wideband simultaneous transmit and receive (STAR) subsystem for a radar or communications system including self-interference cancellation and external noise cancellation. The STAR subsystem includes a canceller circuit which digitally prepares a cancellation signal to cancel out leaked or reflected portions of the transmit signal and correlated noise in the receiver signal. The self-interference cancellation can be adaptively configured in a closed-loop mode, and operated open loop in real time to minimize bandwidth limitations and achieve wideband performance. The STAR subsystem also includes an external noise active canceller which greatly diminishes high-power external noise in the receiver signal. The external noise canceller digitally synthesizes a cancellation signal which dramatically improves the signal-to-noise ratio in the receiver. Together, the combined cancellation techniques prevent receiver saturation and preserve receiver sensitivity.

公开(公告)号：US10218490B1

公开(公告)日：2019-02-26

申请号：US15335241

申请日：2016-10-26

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Jeffrey M. Yang ,  Pei-Lan Hsu

IPC: H04L5/14 ,  G01S7/02 ,  H04K3/00 ,  G01S13/02

Abstract: A wideband simultaneous transmit and receive (STAR) subsystem for a radar or other two-way system. The STAR subsystem includes a canceller circuit which digitally prepares a cancellation signal to cancel out leaked or reflected portions of the transmit signal and correlated noise in the receiver signal. The STAR subsystem also performs a final cancellation of temperature-dependent or “thermal” transmit-signal noise in the receiver signal. Together, the combined cancellation techniques prevent receiver saturation and preserve receiver sensitivity. The digital cancellation can be adapted in a closed-loop mode to adjust time delays and amplitudes of cancellation signal components. The cancellation system is run open loop in real time to minimize bandwidth limitations and achieve wideband performance. The STAR subsystem can be implemented with discrete components, as a system-on-chip, or as any combination thereof.

公开(公告)号：US10116411B1

公开(公告)日：2018-10-30

申请号：US15249274

申请日：2016-08-26

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： David W. Evans ,  Jeffrey M. Yang

IPC: H04K3/00 ,  H04B7/185 ,  H04W72/04

Abstract: A method for sending messages through the atmosphere. The method includes sending the messages to an intended recipient, such as an aircraft, on a data link over an operating frequency at or near an atmospheric absorption band, where the operating frequency is selected to be closer to or farther from the absorption band to control the attenuation of the messages in the atmosphere so that the intended recipient is able to receive the messages, but unintended recipients are unable to receive the messages or jamming signals are unable to jam the messages.