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公开(公告)号：US20140062602A1
公开(公告)日：2014-03-06
申请号：US13764483
申请日：2013-02-11
Applicant: Raytheon Company
Inventor： Kanon Liu , Bryan W. Kean , James F. Asbrock
IPC: H03F3/68
CPC classification number: H03F3/68 , G01C3/08 , H03F3/087 , H03F3/45475 , H03F2200/264 , H03F2200/78
Abstract: According to one embodiment, a circuit comprises a Capacitive Trans-Impedance Amplifier (CTIA) configured to receive a current pulse at an input and convert the current pulse to a voltage step. The voltage step is directed to a first signal path and a second signal path. When the voltage step exceeds a first threshold, the first signal path directs an enable pulse to the second signal path. The second signal path generates an output pulse when the voltage step exceeds a second threshold and the enable pulse is enabled. The second signal path comprises a first, a second, and a third amplifier to increase detection of the voltage step by the second signal path.
Abstract translation: 根据一个实施例，电路包括电容反阻抗放大器（CTIA），其被配置为在输入处接收电流脉冲并将电流脉冲转换成电压阶跃。 电压步骤被引导到第一信号路径和第二信号路径。 当电压步长超过第一阈值时，第一信号路径将使能脉冲引导到第二信号路径。 第二信号路径当电压步长超过第二阈值时产生输出脉冲，使能脉冲使能。 第二信号路径包括第一，第二和第三放大器，以增加第二信号路径对电压步进的检测。
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12.发明公开公开(公告)号：US20230253932A1
公开(公告)日：2023-08-10
申请号：US17649994
申请日：2022-02-04
Applicant: Raytheon Company
Inventor： Bryan W. Kean , Eric J. Beuville , Ravi S. Kirschner
Abstract: An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes a capacitor transimpedance amplifier (CTIA) unit cell having (i) an amplifier configured to receive the electrical current and a reference voltage, (ii) a feedback capacitor coupled in parallel across the amplifier, and (iii) a reset switch coupled in parallel across the feedback capacitor. The apparatus further includes an event detector configured to sense a high-energy event affecting the photodetector. In addition, the apparatus includes a switchable clamp coupled across inputs of the amplifier, where the event detector is configured to close the switchable clamp in response to sensing the high-energy event.
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公开(公告)号：US11557235B1
公开(公告)日：2023-01-17
申请号：US17644542
申请日：2021-12-15
Applicant: Raytheon Company
Inventor： Jehyuk Rhee , Bryan W. Kean , John L. Vampola
Abstract: A device includes multiple row power lines and multiple row control lines arranged in rows, where each row control line corresponds to one of the row power lines. The device also includes multiple column power lines arranged in columns. The device further includes multiple unit cells, where each unit cell is coupled to one of the row power lines and one of the row control lines and selectively coupled to one of the column power lines. In addition, the device includes multiple row power switches and multiple column power switches arranged in pairs, where each pair includes one of the row power switches and one of the column power switches. Each pair is configured to selectively (i) connect a corresponding one of the rows and a corresponding one of the columns or (ii) isolate the corresponding one row and the corresponding one column from each other.
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公开(公告)号：US20220311962A1
公开(公告)日：2022-09-29
申请号：US17214745
申请日：2021-03-26
Applicant: RAYTHEON COMPANY
Inventor： Bryan W. Kean
Abstract: A capacitive trans-impedance amplifier (CTIA) unit cell includes a CTIA and a clamp capacitor. The CTIA is configured to process a first electrical charge induced by a photocurrent. The clamp capacitor includes a first clamp terminal configured to receive a dynamic signal and a second clamp terminal connected to a CTIA output of the CTIA so as to establish an integrating node. The clamp capacitor delivers a second electrical charge to the CTIA in response to receiving the dynamic signal so as to adjust an integrating reset level at the integrating node.
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15.发明授权公开(公告)号：US10834346B2
公开(公告)日：2020-11-10
申请号：US16426863
申请日：2019-05-30
Applicant: RAYTHEON COMPANY
Inventor： Steven Botts , Bryan W. Kean , Richard J. Peralta , John L. Vampola , Micky R. Harris
Abstract: A TDI scanner including a dynamically programmable focal plane array including a two-dimensional array of detectors arranged in a plurality of columns and a plurality of rows, the array being divided into a plurality of banks separated from one another by gap regions, each bank including a plurality of sub-banks, and each sub-bank including at least one row of detectors, a ROIC coupled to the focal plane array and configured to combine in a TDI process outputs from detectors in each column of detectors in each sub-bank, and a controller configured to program the focal plane array to selectively and dynamically set characteristics of the focal plane array, the characteristics including a size and a location within the two-dimensional array of each of the plurality of sub-banks and the gap regions, the size corresponding to a number of rows of detectors included in the respective sub-bank or gap region.
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Patent Agency Ranking
公开(公告)号：US20180184020A1
公开(公告)日：2018-06-28
申请号：US15388023
申请日：2016-12-22
Applicant: RAYTHEON COMPANY
Inventor： John L. Vampola , Micky R. Harris , Bryan W. Kean , Steven Botts , Richard J. Peralta
CPC classification number: H04N5/3559 , H04N5/3535 , H04N5/35527 , H04N5/3742 , H04N5/37452 , H04N5/378
Abstract: According to one aspect, embodiments herein provide a unit cell circuit comprising a photodetector configured to generate a photo-current in response to receiving light, a first integration capacitor configured to accumulate charge corresponding to the photo-current, a second integration capacitor configured to accumulate charge corresponding to the photo-current, a charge diverting switch coupled to the photodetector and configured to selectively couple the first integration capacitor to the second integration capacitor and divert the photo-current to the second integration capacitor in response to a voltage across the first integration capacitor exceeding a threshold level, and read-out circuitry coupled to the first integration capacitor and the charge diverting switch and configured to read-out a first voltage sample from the first integration capacitor corresponding to charge accumulated on the first integration capacitor and to read-out a second voltage sample from the second integration capacitor corresponding to charge accumulated on the second integration capacitor.
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公开(公告)号：US12206369B2
公开(公告)日：2025-01-21
申请号：US18165713
申请日：2023-02-07
Applicant: Raytheon Company
Inventor： Bryan W. Kean
Abstract: An apparatus includes a photodetector configured to generate an electrical current based on received illumination. The apparatus also includes a capacitor transimpedance amplifier (CTIA) unit cell configured to generate an integration voltage based on the electrical current. The CTIA unit cell includes (i) an amplifier configured to receive the electrical current and a first reference voltage, (ii) a feedback capacitor coupled in parallel across the amplifier, and (iii) a reset switch coupled in parallel across the feedback capacitor. The apparatus further includes a comparator configured to compare an input voltage of the amplifier and a second reference voltage, where generation of the integration voltage is modifiable based on the comparison.
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公开(公告)号：US11533447B2
公开(公告)日：2022-12-20
申请号：US17214745
申请日：2021-03-26
Applicant: RAYTHEON COMPANY
Inventor： Bryan W. Kean
Abstract: A capacitive trans-impedance amplifier (CTIA) unit cell includes a CTIA and a clamp capacitor. The CTIA is configured to process a first electrical charge induced by a photocurrent. The clamp capacitor includes a first clamp terminal configured to receive a dynamic signal and a second clamp terminal connected to a CTIA output of the CTIA so as to establish an integrating node. The clamp capacitor delivers a second electrical charge to the CTIA in response to receiving the dynamic signal so as to adjust an integrating reset level at the integrating node.
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19.发明授权公开(公告)号：US11463639B2
公开(公告)日：2022-10-04
申请号：US17091689
申请日：2020-11-06
Applicant: RAYTHEON COMPANY
Inventor： Steven Botts , Bryan W. Kean , Richard J. Peralta , John L. Vampola , Micky R. Harris
Abstract: A TDI scanner including a dynamically programmable focal plane array including a two-dimensional array of detectors arranged in a plurality of columns and a plurality of rows, the array being divided into a plurality of banks separated from one another by gap regions, each bank including a plurality of sub-banks, and each sub-bank including at least one row of detectors, a ROIC coupled to the focal plane array and configured to combine in a TDI process outputs from detectors in each column of detectors in each sub-bank, and a controller configured to program the focal plane array to selectively and dynamically set characteristics of the focal plane array, the characteristics including a size and a location within the two-dimensional array of each of the plurality of sub-banks and the gap regions, the size corresponding to a number of rows of detectors included in the respective sub-bank or gap region.
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20.发明申请公开(公告)号：US20190373194A1
公开(公告)日：2019-12-05
申请号：US16426863
申请日：2019-05-30
Applicant: RAYTHEON COMPANY
Inventor： Steven Botts , Bryan W. Kean , Richard J. Peralta , John L. Vampola , Micky R. Harris
Abstract: A TDI scanner including a dynamically programmable focal plane array including a two-dimensional array of detectors arranged in a plurality of columns and a plurality of rows, the array being divided into a plurality of banks separated from one another by gap regions, each bank including a plurality of sub-banks, and each sub-bank including at least one row of detectors, a ROIC coupled to the focal plane array and configured to combine in a TDI process outputs from detectors in each column of detectors in each sub-bank, and a controller configured to program the focal plane array to selectively and dynamically set characteristics of the focal plane array, the characteristics including a size and a location within the two-dimensional array of each of the plurality of sub-banks and the gap regions, the size corresponding to a number of rows of detectors included in the respective sub-bank or gap region.
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