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公开(公告)号：US20190123416A1
公开(公告)日：2019-04-25
申请号：US16231463
申请日：2018-12-22
Applicant: Texas Instruments Incorporated
Inventor： Eunyoung Seok , Srinath Ramaswamy , Brian B. Ginsburg , Vijay B. Rentala , Baher Haroun
Abstract: An apparatus is provided. In the apparatus, there is an antenna package and an integrated circuit (IC). A circuit trace assembly is secured to the IC. A coupler (with an antenna assembly and a high impedance surface (HIS)) is secured to the circuit trace assembly. An antenna assembly has a window region, a conductive region that substantially surrounds the window region, a circular patch antenna that is in communication with the IC, and an elliptical patch antenna that is located within the window region, that is extends over at least a portion of the circular patch antenna, and that is in communication with the circular patch antenna. The HIS substantially surrounds the antenna assembly.
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公开(公告)号：US10197638B2
公开(公告)日：2019-02-05
申请号：US15186383
申请日：2016-06-17
Applicant: Texas Instruments Incorporated
Inventor： Arup Polley , Srinath Ramaswamy , Baher S. Haroun , Rajarshi Mukhopadhyay
Abstract: A high bandwidth Hall sensor includes a high bandwidth path and a low bandwidth path. The relatively high offset (from sensor offset) of the high bandwidth path is estimated using a relatively low offset generated by the low bandwidth path. The relatively high offset of the high bandwidth path is substantially reduced by combining the output of the high bandwidth path with the output of the low bandwidth path to generate a high bandwidth, low offset output. The offset can be further reduced by including transimpedance amplifiers in the high bandwidth sensors to optimize the frequency response of high bandwidth Hall sensor.
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公开(公告)号：US10187940B2
公开(公告)日：2019-01-22
申请号：US15131831
申请日：2016-04-18
Applicant: Texas Instruments Incorporated
Inventor： Arup Polley , Ajit Sharma , Srinath Ramaswamy , Sriram Narayanan
IPC: H05B33/08 , A61B5/024 , A61B5/1455 , A61B5/00
Abstract: An LED (light-emitting diode) driver for a photoplethysmography system, including a switched-mode operational amplifier for driving a driver transistor with a source-drain path in series with the LED. In a first clock phase in which the LED is disconnected from the driver transistor, the amplifier is coupled in unity gain mode, and a sampling capacitor stores a voltage corresponding to the offset and flicker noise of the amplifier; the gate of the driver transistor is precharged to a reference voltage in this first clock phase. In a second clock phase, the sampled voltage at the capacitor is subtracted from the reference voltage applied to the amplifier input, so that the LED drive is adjusted according to the sampled noise. A signal from the transmitter channel is forwarded to a noise/ripple remover in the receiving channel, to remove transmitter noise from the received signal.
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公开(公告)号：US10041811B2
公开(公告)日：2018-08-07
申请号：US15186394
申请日：2016-06-17
Applicant: Texas Instruments Incorporated
Inventor： Arup Polley , Srinath Ramaswamy , Baher S. Haroun , Rajarshi Mukhopadhyay
IPC: G01D5/14
Abstract: A high bandwidth Hall sensor includes, for example, a Hall element for generating a first polarity Hall-signal output current. An amplifier receives, at a first input, the first polarity Hall-signal output current and outputs a feedback current of a second polarity opposite the first polarity in response. The feedback current is coupled to the first input, and the feedback current suppresses an instantaneous voltage generated by the first polarity first Hall element output current at the first input. In an embodiment, the feedback current suppresses the instantaneous voltage generated by first polarity Hall element output current such that the effects of the Hall element source impedance are reduced.
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公开(公告)号：US09667289B2
公开(公告)日：2017-05-30
申请号：US15084052
申请日：2016-03-29
Applicant: Texas Instruments Incorporated
Inventor： Arup Polley , Ajit Sharma , Seung Bae Lee , Sriram Narayanan , Srinath Ramaswamy
CPC classification number: H04B1/1036 , H04B1/0028 , H04B2001/1054
Abstract: Reduced noise and power with rapid settling time and increased performance in multi-modal analog multiplexed data acquisition systems. An example apparatus arrangement includes a circuit input configured to receive a plurality of analog input signals; an analog to digital converter circuit configured to output a digital representation of an analog voltage; a selection circuit configured to select one of the analog input signals received at the circuit input; a buffer coupled to receive the selected one of the analog input signals; a filter coupled to the buffer and configured to perform a high bandwidth sample operation and a low bandwidth sample operation and having a filter output, responsive to a control signal; and a sampling capacitor coupled to the filter to sample the filter output, and having an output coupled to the analog to digital converter. Methods and additional apparatus arrangements are disclosed.
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Patent Agency Ranking
公开(公告)号：US20140111394A1
公开(公告)日：2014-04-24
申请号：US13657615
申请日：2012-10-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Eunyoung Seok , Srinath Ramaswamy , Brian B. Ginsburg , Vijay B. Rentala , Baher Haroun
CPC classification number: H01P11/001 , H01P5/08 , H01P5/107 , H01Q9/04 , H01Q9/0407 , H05K3/20 , H05K3/4038 , H05K3/4644 , Y10T29/49016
Abstract: An apparatus is provided. In the apparatus, there is an antenna package and an integrated circuit (IC). A circuit trace assembly is secured to the IC. A coupler (with an antenna assembly and a high impedance surface (HIS)) is secured to the circuit trace assembly. An antenna assembly has a window region, a conductive region that substantially surrounds the window region, a circular patch antenna that is in communication with the IC, and an elliptical patch antenna that is located within the window region, that is extends over at least a portion of the circular patch antenna, and that is in communication with the circular patch antenna. The HIS substantially surrounds the antenna assembly.
Abstract translation: 提供了一种装置。 在该装置中，存在天线封装和集成电路（IC）。 电路迹线组件固定到IC。 耦合器（具有天线组件和高阻抗表面（HIS））固定到电路迹线组件。 天线组件具有窗口区域，基本上围绕窗口区域的导电区域，与IC连通的圆形贴片天线以及位于窗口区域内的椭圆形贴片天线，其延伸至少一个 圆形贴片天线的一部分，并且与圆形贴片天线通信。 HIS基本上围绕天线组件。
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公开(公告)号：US20240110999A1
公开(公告)日：2024-04-04
申请号：US18326658
申请日：2023-05-31
Applicant: Texas Instruments Incorporated
Inventor： Lei Ding , Elie Libbos , Srinath Ramaswamy
CPC classification number: G01R33/0035 , G01R33/0017 , G01R33/09
Abstract: In one example, a calibration method includes receiving, from a sensor proximate a first conductor, a sensor signal representing a measurement of a magnetic field produced based on a first current flowing in the first conductor and a second current flowing in a second conductor, the first current including first and second current components having different frequencies, and the second current including third and fourth current components, the third current component phase shifted from, and having the same frequency as, the first current component and the fourth current component having a different frequency from the third current component, determining reference values of the first and second currents, and based on the sensor signal and the reference values of the first and second currents, determining for the sensor, a plurality of coupling coefficients representing magnetic field coupling between the first and second conductors.
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公开(公告)号：US11088432B2
公开(公告)日：2021-08-10
申请号：US16231463
申请日：2018-12-22
Applicant: Texas Instruments Incorporated
Inventor： Eunyoung Seok , Srinath Ramaswamy , Brian B. Ginsburg , Vijay B. Rentala , Baher Haroun
Abstract: An apparatus is provided. In the apparatus, there is an antenna package and an integrated circuit (IC). A circuit trace assembly is secured to the IC. A coupler (with an antenna assembly and a high impedance surface (HIS)) is secured to the circuit trace assembly. An antenna assembly has a window region, a conductive region that substantially surrounds the window region, a circular patch antenna that is in communication with the IC, and an elliptical patch antenna that is located within the window region, that is extends over at least a portion of the circular patch antenna, and that is in communication with the circular patch antenna. The HIS substantially surrounds the antenna assembly.
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公开(公告)号：US11002563B2
公开(公告)日：2021-05-11
申请号：US16844547
申请日：2020-04-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Arup Polley , Srinath Ramaswamy , Baher S. Haroun , Rajarshi Mukhopadhyay
Abstract: A first amplifier has an input to receive a Hall-signal output current from a first Hall element and has an output to output feedback current in response to the received Hall-signal output current. The Hall-signal output current is impeded by an impedance of the first Hall element. The feedback current is coupled to counterpoise the Hall-signal output current at the input, and a voltage at the output is an amplified Hall output signal. A second amplifier generates a high-frequency portion output signal in response to a difference between the amplified Hall output signal and a Hall-signal output signal from a second Hall element. A filter reduces high-frequency content of the high-frequency portion output signal and generates an offset correction signal. A third amplifier generates a corrected Hall signal in response to a difference between the amplified Hall output signal and the offset correction signal.
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公开(公告)号：US10698066B2
公开(公告)日：2020-06-30
申请号：US15952521
申请日：2018-04-13
Applicant: Texas Instruments Incorporated
Inventor： Arup Polley , Srinath Ramaswamy , Baher S. Haroun
Abstract: In described examples, a Hall effect sensor includes a primary Hall effect sensor element and an auxiliary Hall effect sensor element. A known magnetic field is applied to the auxiliary Hall effect sensor to produce an auxiliary Hall voltage used in a feedback loop to control the bias current of the auxiliary Hall effect sensor to maintain the auxiliary Hall voltage approximately constant over a range of temperature and other factors. A bias current for the primary Hall effect sensor is controlled to track the bias current of the auxiliary Hall effect sensor to maintain the sensitivity of the primary Hall effect sensor approximately constant over the same range of temperature and other factors.
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