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公开(公告)号：US12273852B2
公开(公告)日：2025-04-08
申请号：US17537882
申请日：2021-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Anand Dabak , Marius Moe , Charles Sestok
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.
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2.发明授权公开(公告)号：US09413382B2
公开(公告)日：2016-08-09
申请号：US14606533
申请日：2015-01-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Patrick Satarzadeh , Venkatesh Srinivasan , Charles Sestok
Abstract: Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a pipelined CT SDM is provided that has an architecture that is conducing to being calibrated. Namely, the system includes a digital filter and other features that can be adjusted to account for input imbalance errors and well as quantization leakage noise.
Abstract translation: 传统上，流水线连续时间（CT）Σ-Δ调制器（SDM）已经难以构建，至少部分是由于校准管道的困难。 然而，这里提供了一种流水线CT SDM，其具有有助于被校准的架构。 也就是说，该系统包括数字滤波器和其他可调整的特征，以解决输入不平衡误差以及量化泄漏噪声。
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3.发明申请公开(公告)号：US20150138004A1
公开(公告)日：2015-05-21
申请号：US14606533
申请日：2015-01-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Patrick Satarzadeh , Venkatesh Srinivasan , Charles Sestok
IPC: H03M3/00
Abstract: Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a pipelined CT SDM is provided that has an architecture that is conducing to being calibrated. Namely, the system includes a digital filter and other features that can be adjusted to account for input imbalance errors and well as quantization leakage noise.
Abstract translation: 传统上，流水线连续时间（CT）Σ-Δ调制器（SDM）已经难以构建，至少部分是由于校准管道的困难。 然而，这里提供了一种流水线CT SDM，其具有有助于被校准的架构。 也就是说，该系统包括数字滤波器和其他可调整的特征，以解决输入不平衡误差以及量化泄漏噪声。
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