公开(公告)号：US11674797B2

公开(公告)日：2023-06-13

申请号：US16826257

申请日：2020-03-22

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala ,  Paul W. Stevens ,  William Edward O'Mara

IPC分类号： G01B11/27 ,  H01L29/66 ,  H01L29/872

CPC分类号： G01B11/272 ,  H01L29/66143 ,  H01L29/872

摘要： Aspects of the embodiments are directed to non-contact systems, methods and devices for optical detection of objects in space at precise angles. This method involves the design and fabrication of photodiode arrays for measuring angular response using self-aligned Schottky platinum silicide (PtSi) PIN photodiodes (PN-diodes with an intrinsic layer sandwiched in between) that provide linear angular measurements from incident light in multiple dimensions. A self-aligned device is defined as one in which is not sensitive to photomask layer registrations. This design eliminates device offset between “left” and right” channels for normal incident light as compared to more conventional PIN diode constructions.

公开(公告)号：USD913135S1

公开(公告)日：2021-03-16

申请号：US29691393

申请日：2019-05-15

申请人： ANALOG DEVICES, INC.

设计人： Shrenik Deliwala

公开(公告)号：US10921367B2

公开(公告)日：2021-02-16

申请号：US16792596

申请日：2020-02-17

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala

IPC分类号： G01N15/06 ,  G01R31/28 ,  G01N15/00

摘要： Gain independent reference channel measurement system and method. A method of making robust, stable measurements, in a variety of different applications is disclosed. More specifically, this disclosure describes systems and methods relating to performing gain independent reference channel measurements by making two phase measurements of a device under test. Mathematically, the measurements are combined and many common mode parameters drop out. The result yields an analysis of a device under test analysis which mitigated errors, predominately arising from environmental variations and changes in circuit behavior stemming from swings in signal input.

公开(公告)号：US10809173B2

公开(公告)日：2020-10-20

申请号：US16206268

申请日：2018-11-30

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala

IPC分类号： G01N15/06 ,  G08B17/107 ,  G08B17/103

摘要： Device for optically detecting smoke and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build a very compact housing around the smoke detector while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical defection elements, are disclosed.

公开(公告)号：US20200249158A1

公开(公告)日：2020-08-06

申请号：US16855279

申请日：2020-04-22

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala

IPC分类号： G01N21/53 ,  G08B17/107

摘要： Device for improving an optical detecting smoke apparatus and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build one or more optimized blocking members in a smoke detector to augment signal to noise ratio. This is performed while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical defection elements, are disclosed.

公开(公告)号：US20160351666A1

公开(公告)日：2016-12-01

申请号：US15165122

申请日：2016-05-26

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala ,  James Fiorenza ,  Donghyun Jin

IPC分类号： H01L29/15 ,  H01L29/205 ,  H01L21/02 ,  H01L29/20

CPC分类号： H01L29/155 ,  H01L21/02381 ,  H01L21/02458 ,  H01L21/02507 ,  H01L21/0254 ,  H01L21/02686 ,  H01L21/3221 ,  H01L21/324 ,  H01L29/2003 ,  H01L29/205 ,  H01L29/7787

摘要： A method cold-melts a high conductivity region between a high-resistivity silicon substrate and a gallium-nitride layer to form a trap rich region that substantially immobilizes charge carriers in that region. Such a process should substantially mitigate the parasitic impact of that region on circuits formed at least in part by the gallium-nitride layer.

摘要翻译： 一种方法在高电阻率硅衬底和氮化镓层之间冷熔融高导电率区域，以形成基本上固定该区域中的电荷载流子的富集阱区域。 这种过程应该基本上减轻该区域对至少部分由氮化镓层形成的电路的寄生冲击。

公开(公告)号：US20140323844A1

公开(公告)日：2014-10-30

申请号：US13870669

申请日：2013-04-25

申请人： ANALOG DEVICES, INC.

发明人： Shrenik Deliwala ,  Steven J. Decker ,  Dan M. Weinberg

IPC分类号： H01L31/02 ,  A61B5/00

CPC分类号： H01L31/02016 ,  A61B5/0059 ,  A61B5/02433 ,  A61B5/7225 ,  H01L31/02019 ,  H03F3/45 ,  H04B2210/003

摘要： An electrical circuit includes a photodiode that receives a light signal from a light source and generates a photocurrent signal, a trans-impedance amplifier that amplifies the photocurrent signal and generates a low noise signal, and a high pass filter that converts the low noise signal into an alternating current (AC) signal having a positive amplitude, a negative amplitude, and a zero cross-over point between the positive amplitude and the negative amplitude. The electrical circuit also includes a positive integrating amplifier that receives the positive amplitude of the AC signal and generates a positive integrated value over an integration period, and a negative integrating amplifier that receives the negative amplitude of the AC signal and generates a negative integrated value over the integration period. The electrical circuit further includes at least one analog-to-digital converter that receives the positive and negative integrated values.

摘要翻译： 电路包括光电二极管，其从光源接收光信号并产生光电流信号，放大光电流信号并产生低噪声信号的跨阻放大器，以及将低噪声信号转换成 在正振幅和负振幅之间具有正振幅，负振幅和零交叉点的交流（AC）信号。 电路还包括正积分放大器，其接收AC信号的正幅度并在积分周期上产生正积分值，以及负积分放大器，其接收AC信号的负幅度并产生负积分值 整合期。 电路还包括至少一个模数转换器，其接收正积分值和负积分值。

公开(公告)号：US11821836B2

公开(公告)日：2023-11-21

申请号：US17327172

申请日：2021-05-21

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala

IPC分类号： G01N21/3504 ,  G01N21/01

CPC分类号： G01N21/3504 ,  G01N21/01 ,  G01N2021/3513 ,  G01N2201/0636 ,  G01N2201/1211

摘要： System and apparatus for robust, portable gas detection. Specifically, this disclosure describes apparatuses and systems for optical gas detection in a compact package using two optical pathways. There is a need for a very compact, low-power, gas detection system for gases such as CO2, NOx, water vapor, methane, etc. This disclosure provides an ultra-compact and highly stable and efficient optical measurement system based on principals of optical absorption spectroscopy using substantially collinear pathways.

公开(公告)号：US11788942B2

公开(公告)日：2023-10-17

申请号：US16181878

申请日：2018-11-06

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala

IPC分类号： G01N15/06 ,  G08B17/107 ,  G08B17/113 ,  G01N15/00

CPC分类号： G01N15/06 ,  G08B17/107 ,  G08B17/113 ,  G01N2015/0046 ,  G01N2015/0693

摘要： Device for optically detecting smoke and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build a very compact housing around the smoke detector while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust.

公开(公告)号：US11747272B2

公开(公告)日：2023-09-05

申请号：US16872758

申请日：2020-05-12

申请人： Analog Devices, Inc.

发明人： Shrenik Deliwala

IPC分类号： G01N21/3504 ,  G01N33/00

CPC分类号： G01N21/3504 ,  G01N33/004 ,  G01N2201/062 ,  G01N2201/0668 ,  G01N2201/0686

摘要： Device for improving an optical detecting smoke apparatus and implementing thereof. Apparatus and methods for detecting the presence of smoke in a small, long-lasting smoke detector are disclosed. Specifically, the present disclosure shows how to build one or more optimized blocking members in a smoke detector to augment signal to noise ratio. This is performed while keeping the reflections from the housing structure to a very low value while satisfying all the other peripheral needs of fast response to smoke and preventing ambient light. This allows very small measurements of light scattering of the smoke particles to be reliable in a device resistant to the negative effects of dust. In particular, geometrical optical elements, e.g., cap and optical defection elements, are disclosed.