公开(公告)号：US20240209491A1

公开(公告)日：2024-06-27

申请号：US18597354

申请日：2024-03-06

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Rajashree Bhattacharya ,  Vincent Gambin

IPC: C23C14/08 ,  C23C14/34 ,  C23C14/50 ,  C23C14/58 ,  H01J37/34

CPC classification number: C23C14/08 ,  C23C14/3464 ,  C23C14/505 ,  C23C14/5806 ,  H01J37/3426

Abstract: A power limiter for limiting power provided to an electronic device. The power limiter includes a waveguide that receives an input signal to be sent to the electronic device, an LaCoO3 film formed to one side of the waveguide, an LaCoO3 film formed to an opposite side of the waveguide, a grounded element formed to one of the LaCoO3 films and a grounded element formed to the other LaCoO3 film. When the heat level in the LaCoO3 films is below a predetermined threshold, the LaCoO3 films are an insulator and the input signal propagates through the waveguide to the electronic device, and when the heat level in the LaCoO3 films goes above the threshold, the LaCoO3 films become conductive, and the input signal is shunted through the LaCoO3 films to the grounded elements.

公开(公告)号：US20220364219A1

公开(公告)日：2022-11-17

申请号：US17318519

申请日：2021-05-12

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Rajashree Bhattacharya ,  Vincent Gambin

IPC: C23C14/08 ,  C23C14/58

Abstract: A method for producing a LaCoO3 film on a substrate that includes positioning the substrate in a vacuum chamber, positioning a cobalt target in the vacuum chamber, positioning a lanthanum target in the vacuum chamber, providing oxygen in the vacuum chamber, and sputtering cobalt atoms off of the cobalt target and lanthanum atoms off of the lanthanum target so that the cobalt and lanthanum atoms interact with the oxygen to form the LaCoO3 film on the substrate. A power limiter that employs one or more LaCoO3 films is also disclosed.