公开(公告)号：US20240103084A1

公开(公告)日：2024-03-28

申请号：US18306549

申请日：2023-04-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Charles SESTOK ,  Yevgen BARSUKOV

IPC: G01R31/367 ,  G01R31/389

CPC classification number: G01R31/367 ,  G01R31/389 ,  G01R31/3842

Abstract: A circuit includes a processing circuit. The processing circuit is configured to model a battery using a battery model. The battery model includes: a voltage terminal, an RC stage having a first resistor and a first capacitor in parallel, a second resistor, a second capacitor and a ground terminal. The second resistor is coupled between the voltage terminal and the RC stage. The RC stage is coupled between the second resistor and the second capacitor. The second capacitor is coupled between the RC stage and the ground terminal. The processing circuit is also configured to determine a first resistance of the first resistor based on a first ratio of the first resistance to a total battery resistance, determine a second resistance of the second resistor based on a second ratio of the second resistance to the total battery resistance, and determine the total battery resistance.

公开(公告)号：US20220091216A1

公开(公告)日：2022-03-24

申请号：US17537882

申请日：2021-11-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anand DABAK ,  Marius MOE ,  Charles SESTOK

IPC: G01S3/16 ,  G01S3/48 ,  H04W64/00 ,  H04L27/26 ,  G01S3/58

Abstract: Using a phase interferometry method which utilizes both amplitude and phase allows the determination and estimation of multipath signals. To determine the location of an object, a signal that contains sufficient information to allow determination of both amplitude and phase, like a packet that includes a sinewave portion, is provided from a master device. A slave device measures the phase and amplitude of the received packet and returns this information to the master device. The slave device returns a packet to the master that contains a similar sinewave portion to allow the master device to determine the phase and amplitude of the received signals. Based on the two sets of amplitude and phase of the RF signals, the master device utilizes a fast Fourier transform or techniques like multiple signal classification to determine the indicated distance for each path and thus more accurately determines a location of the slave device.

公开(公告)号：US20200209337A1

公开(公告)日：2020-07-02

申请号：US16232783

申请日：2018-12-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anand DABAK ,  Marius MOE ,  Charles SESTOK

IPC: G01S3/16 ,  G01S3/48 ,  G01S3/58 ,  H04L27/26 ,  H04W64/00

Abstract: Using a phase interferometry method which utilizes both amplitude and phase allows the determination and estimation of multipath signals. To determine the location of an object, a signal that contains sufficient information to allow determination of both amplitude and phase, like a packet that includes a sinewave portion, is provided from a master device. A slave device measures the phase and amplitude of the received packet and returns this information to the master device. The slave device returns a packet to the master that contains a similar sinewave portion to allow the master device to determine the phase and amplitude of the received signals. Based on the two sets of amplitude and phase of the RF signals, the master device utilizes a fast Fourier transform or techniques like multiple signal classification to determine the indicated distance for each path and thus more accurately determines a location of the slave device.