公开(公告)号：US11460551B2

公开(公告)日：2022-10-04

申请号：US16287411

申请日：2019-02-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Baher Haroun ,  Rahmi Hezar ,  Srinath Ramaswamy ,  Nirmal C. Warke ,  David Magee ,  Ting Li

IPC: G01S7/481 ,  G01S17/10 ,  G01S7/4865 ,  G01S7/484

Abstract: A pulsed light source illuminates a scene with a virtual array of points. Light reflected by the scene is detected by a small pixel array, allowing generation of a three-dimensional map of the scene. A processing element processing data output by the small pixel array uses a multipath resolution algorithm to resolve individual objects in the scene.

公开(公告)号：US10193508B2

公开(公告)日：2019-01-29

申请号：US14255164

申请日：2014-04-17

Applicant: Texas Instruments Incorporated

Inventor： Aritra Banerjee ,  Rahmi Hezar ,  Lei Ding ,  Nathan Richard Schemm

IPC: H03F3/217 ,  H03F3/193 ,  H03F1/02 ,  H03F1/22 ,  H03F3/21 ,  H03F3/24 ,  H03F3/72

Abstract: A multi-level, multi-branch outphasing amplifier (20-1) includes a first branch group circuit (22-1) including a first branch circuit (11) receiving a first RF input signal (S1(t)) and first control information (S11_Ctrl=VDD) and a second branch circuit (12) receiving the first input signal and second control information (S12_Ctrl). Each of the first (11) and second (12) branch circuits includes a power amplifier. The second control information enables the second branch circuit to be switched on or off while the first branch circuit (12) remains on. A second branch group circuit (22-2) includes a third branch circuit (21) receiving a second RF input signal (S2(t)) and third control information (S21_Ctrl=VDD) and a fourth branch circuit (22) receiving the second input signal (S2(t)) and fourth control information (S22_Ctrl). Each of the third and fourth branch circuits includes a power amplifier. The fourth control information enables the fourth branch circuit to be switched on or off while the third branch circuit remains on. A combiner (24) combines output signals of the power amplifiers to produce an output signal (SOUT(t)).

公开(公告)号：US09806610B2

公开(公告)日：2017-10-31

申请号：US14871140

申请日：2015-09-30

Applicant: Texas Instruments Incorporated

Inventor： Rahmi Hezar ,  Nikolaus Klemmer

IPC: H02M3/156 ,  H02M1/44

CPC classification number: H02M3/156 ,  H02M1/44

Abstract: Noise-shaped frequency hopping power converters are disclosed. An example noise-shaped frequency hopping power converter comprises a shaped number generator having a first output to output a noise-shaped selection signal and a power converter having a first input to receive an input voltage signal, a second input to receive a switching signal that is based on the noise-shaped selection signal, and a second output to output an output voltage signal based on the switching signal.

公开(公告)号：US20160268974A1

公开(公告)日：2016-09-15

申请号：US15165339

申请日：2016-05-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Aritra Banerjee ,  Joonhoi Hur ,  Baher Haroun ,  Nathan Richard Schemm ,  Rahmi Hezar ,  Lei Ding

IPC: H03F1/02 ,  H03F3/45 ,  H03F3/217 ,  H03F3/21 ,  H03F3/193

CPC classification number: H03F1/0205 ,  H03F1/0294 ,  H03F3/193 ,  H03F3/211 ,  H03F3/217 ,  H03F3/2171 ,  H03F3/2173 ,  H03F3/2176 ,  H03F3/45179 ,  H03F2200/391 ,  H03F2200/451 ,  H03F2203/21139 ,  H03F2203/21142

Abstract: An outphasing amplifier includes a first class-E power amplifier (16-1) having an output coupled to a first conductor (31-1) and an input receiving a first RF drive signal (S1(t)). A first reactive element (CA-1) is coupled between the first conductor and a second conductor (30-1). A second reactive element (LA-1) is coupled between the second conductor and a third conductor (32-1). A second class-E power amplifier (17-1) includes an output coupled to a fourth conductor (31-2) and an input coupled to a second RF drive signal (S2(t)), a third reactive element (CA-3) coupled between the second and fourth conductors. Outputs of the first and second power amplifiers are combined by the first, second and third reactive elements to produce an output current in a load (R). An efficiency enhancement circuit (LEEC-1) is coupled between the first and fourth conductors to improve power efficiency at back-off power levels. Power enhancement circuits (20-1,2) are coupled to the first and fourth conductors, respectively.

Abstract translation: 外相放大器包括具有耦合到第一导体（31-1）的输出的第一E类功率放大器（16-1）和接收第一RF驱动信号（S1（t））的输入。 第一电抗元件（CA-1）耦合在第一导体和第二导体（30-1）之间。 第二电抗元件（LA-1）耦合在第二导体和第三导体（32-1）之间。 第二类E功率放大器（17-1）包括耦合到第四导体（31-2）的输出和耦合到第二RF驱动信号（S2（t））的输入，第三反应元件（CA-3 ）耦合在第二和第四导体之间。 第一和第二功率放大器的输出由第一，第二和第三无功元件组合以在负载（R）中产生输出电流。 效率增强电路（LEEC-1）耦合在第一和第四导体之间，以提高退避功率电平的功率效率。 功率增强电路（20-1,2）分别耦合到第一和第四导体。

公开(公告)号：US20160028433A1

公开(公告)日：2016-01-28

申请号：US14876310

申请日：2015-10-06

Applicant: Texas Instruments Incorporated

Inventor： Lei Ding ,  Rahmi Hezar

IPC: H04B1/62 ,  H04L25/49

CPC classification number: H04B1/62 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/217 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L25/03012 ,  H04L25/03343 ,  H04L25/49

Abstract: A method includes receiving an input signal and predistorting a baseband representation of the input signal at a carrier frequency and at one or more harmonic frequencies. The method also includes generating an output signal based on the predistorted baseband representation of the input signal, and transmitting the output signal to a power amplifier. Predistorting the baseband representation of the input signal at the carrier frequency could occur in parallel with predistorting the baseband representation of the input signal at the one or more harmonic frequencies.

公开(公告)号：US09184784B2

公开(公告)日：2015-11-10

申请号：US14203236

申请日：2014-03-10

Applicant: Texas Instruments Incorporated

Inventor： Lei Ding ,  Rahmi Hezar

IPC: H04L25/03 ,  H04B1/62 ,  H04L25/49 ,  H04B1/04

CPC classification number: H04B1/62 ,  H03F1/3241 ,  H03F1/3247 ,  H03F3/217 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L25/03012 ,  H04L25/03343 ,  H04L25/49

Abstract: A method includes receiving an input signal and predistorting a baseband representation of the input signal at a carrier frequency and at one or more harmonic frequencies. The method also includes generating an output signal based on the predistorted baseband representation of the input signal, and transmitting the output signal to a power amplifier. Predistorting the baseband representation of the input signal at the carrier frequency could occur in parallel with predistorting the baseband representation of the input signal at the one or more harmonic frequencies.

Abstract translation: 一种方法包括：以载波频率和一个或多个谐波频率接收输入信号和预失真输入信号的基带表示。 该方法还包括基于输入信号的预失真基带表示产生输出信号，并将输出信号发送到功率放大器。 以载波频率预测输入信号的基带表示可以与在一个或多个谐波频率处对输入信号的基带表示进行预失真并行发生。

公开(公告)号：US20150303961A1

公开(公告)日：2015-10-22

申请号：US14255164

申请日：2014-04-17

Applicant: Texas Instruments Incorporated

Inventor： Aritra Banerjee ,  Rahmi Hezar ,  Lei Ding ,  Nathan Richard Schemm

IPC: H04B1/16 ,  H04B1/12 ,  H04B1/18

CPC classification number: H03F3/193 ,  H03F1/0277 ,  H03F1/0294 ,  H03F1/223 ,  H03F3/211 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/411 ,  H03F2200/511 ,  H03F2200/541 ,  H03F2203/21136 ,  H03F2203/21142 ,  H03F2203/7215 ,  H03F2203/7236

Abstract: A multi-level, multi-branch outphasing amplifier (20-1) includes a first branch group circuit (22-1) including a first branch circuit (11) receiving a first RF input signal (S1(t)) and first control information (S11—Ctrl=VDD) and a second branch circuit (12) receiving the first input signal and second control information (S12—Ctrl). Each of the first (11) and second (12) branch circuits includes a power amplifier. The second control information enables the second branch circuit to be switched on or off while the first branch circuit (12) remains on. A second branch group circuit (22-2) includes a third branch circuit (21) receiving a second RF input signal (S2(t)) and third control information (S21—Ctrl=VDD) and a fourth branch circuit (22) receiving the second input signal (S2(t)) and fourth control information (S22—Ctrl). Each of the third and fourth branch circuits includes a power amplifier. The fourth control information enables the fourth branch circuit to be switched on or off while the third branch circuit remains on. A combiner (24) combines output signals of the power amplifiers to produce an output signal (SOUT(t)).

Abstract translation: 多级多分支外延放大器（20-1）包括：第一分支组电路（22-1），包括接收第一RF输入信号（S1（t））的第一分支电路（11）和第一分支组电路 （S11-Ctrl = VDD）和接收第一输入信号的第二分支电路（12）和第二控制信息（S12-Ctrl）。 第一（11）和第二（12）分支电路中的每一个包括功率放大器。 第二控制信息使第二分支电路在第一分支电路（12）保持接通时被接通或断开。 第二分支组电路（22-2）包括接收第二RF输入信号（S2（t））和第三控制信息（S21-Ctrl = VDD）的第三分支电路（21）和接收第二分支电路 第二输入信号（S2（t））和第四控制信息（S22-Ctrl）。 第三和第四分支电路中的每一个包括功率放大器。 第四控制信息使第四分支电路在第三分支电路保持接通时被接通或断开。 组合器（24）组合功率放大器的输出信号以产生输出信号（SOUT（t））。

公开(公告)号：US20150180692A1

公开(公告)日：2015-06-25

申请号：US14136156

申请日：2013-12-20

Applicant: Texas Instruments Incorporated

Inventor： Rahmi Hezar ,  Lei Ding ,  Joonhoi Hur

IPC: H04L27/20 ,  H04B1/04

CPC classification number: H04B1/04 ,  H03F1/0294 ,  H03F3/2175 ,  H03F3/24 ,  H04L27/206 ,  H04L27/2602

Abstract: For generating quantized signals, a quantized phase domain related to quantized phases of an input signal is generated. Vectors that the input signal may occupy are calculated based on the quantized phase domain. A first quantized phase of a first component of the input signal is generated per the quantized phase domain, and a second quantized phase of a second component of the input signal is generated per the quantized phase domain.

Abstract translation: 为了产生量化信号，产生与输入信号的量化相位相关的量化相位域。 基于量化相位域计算输入信号可能占据的矢量。 每个量化相位域产生输入信号的第一分量的第一量化相位，并且每个量化相位域产生输入信号的第二分量的第二量化相位。

公开(公告)号：US20150030099A1

公开(公告)日：2015-01-29

申请号：US13949345

申请日：2013-07-24

Applicant: Texas Instruments Incorporated

Inventor： Lei Ding ,  Rahmi Hezar ,  Zigang Yang

IPC: H04L27/26

CPC classification number: H04L27/2623

Abstract: For crest factor reduction in a first signal having first and second components, the first component is delayed. A second signal is generated in response to detecting that a peak in the first component exceeds a predetermined threshold. Amplitude of the peak in the first component is reduced in response to detecting that the peak in the first component exceeds the predetermined threshold. Reducing amplitude of the peak in the first component includes adding the second signal to the delayed first component.

Abstract translation: 对于具有第一和第二分量的第一信号中的波峰因数降低，第一分量被延迟。 响应于检测到第一分量中的峰值超过预定阈值，产生第二信号。 响应于检测到第一分量中的峰值超过预定阈值，第一分量中峰值的幅度减小。 降低第一分量中的峰值的幅度包括将第二信号加到延迟的第一分量。

公开(公告)号：US11171616B2

公开(公告)日：2021-11-09

申请号：US16259100

申请日：2019-01-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Aritra Banerjee ,  Rahmi Hezar ,  Lei Ding ,  Nathan Richard Schemm

IPC: H03F3/19 ,  H03F3/193 ,  H03F1/02 ,  H03F1/22 ,  H03F3/21 ,  H03F3/24 ,  H03F3/72

Abstract: A first branch group circuit includes a first branch circuit receiving a first RF input signal and first control information; and a second branch circuit receiving the first input signal and second control information. Each of the first and second branch circuits includes a power amplifier. The second control information enables the second branch circuit to be switched on or off while the first branch circuit remains on. A second branch group circuit includes: a third branch circuit receiving a second RF input signal and third control information; and a fourth branch circuit receiving the second input signal and fourth control information. Each of the third and fourth branch circuits includes a power amplifier. The fourth control information enables the fourth branch circuit to be switched on or off while the third branch circuit remains on. A combiner combines output signals of the power amplifiers to produce an output signal.