公开(公告)号：WO2015009762A1

公开(公告)日：2015-01-22

申请号：PCT/US2014/046761

申请日：2014-07-15

Applicant: QUALCOMM INCORPORATED

Inventor： DICKINSON, Timothy ,  MATHE, Lennart Karl-Axel ,  MCCARTHY, Scott ,  DJORDJEV, Kostadin Dimitrov ,  OLIVEIRA, Louis Dominic ,  ZHOU, Qubo

IPC: G06F3/043

CPC classification number: G06F3/043 ,  G01H1/04 ,  G01S15/02 ,  G06F3/0416 ,  G06F3/0436

Abstract: A method of operation of an ultrasonic sensor array includes receiving a receiver bias voltage at a receiver bias electrode of the ultrasonic sensor array to bias piezoelectric sensor elements of the ultrasonic sensor array. The method further includes receiving a transmitter control signal at the ultrasonic sensor array to cause an ultrasonic transmitter of the ultrasonic sensor array to generate an ultrasonic wave. The method further includes generating data samples based on a reflection of the ultrasonic wave. The receiver bias voltage and the transmitter control signal are received from an integrated circuit that is coupled to the ultrasonic sensor array.

Abstract translation: 超声波传感器阵列的操作方法包括在超声波传感器阵列的接收器偏置电极处接收接收器偏置电压，以偏压超声波传感器阵列的压电传感器元件。 该方法还包括在超声波传感器阵列处接收发射器控制信号以使超声波传感器阵列的超声波发射器产生超声波。 该方法还包括基于超声波的反射生成数据样本。 接收器偏置电压和发射机控制信号从耦合到超声波传感器阵列的集成电路接收。

公开(公告)号：WO2015009766A1

公开(公告)日：2015-01-22

申请号：PCT/US2014/046765

申请日：2014-07-15

Applicant: QUALCOMM INCORPORATED

Inventor： DICKINSON, Timothy ,  MATHE, Lennart Karl-Axel ,  MCCARTHY, Scott ,  DJORDJEV, Kostadin Dimitrov ,  OLIVEIRA, Louis Dominic ,  ZHOU, Qubo

IPC: G06F3/043

CPC classification number: G06F3/043 ,  G01H1/04 ,  G01S15/02 ,  G06F3/0416 ,  G06F3/0436

Abstract: An apparatus includes an integrated circuit configured to be operatively coupled to a sensor array that is configured to generate an ultrasonic wave. The integrated circuit includes a transmitter circuit configured to provide a first signal to the sensor array. The integrated circuit further includes a receiver circuit configured to receive a second signal from the sensor array in response to providing the first signal. The sensor array includes an ultrasonic transmitter configured to generate the ultrasonic wave in response to the first signal and a piezoelectric receiver layer configured to detect a reflection of the ultrasonic wave.

Abstract translation: 一种装置包括被配置为可操作地耦合到被配置为产生超声波的传感器阵列的集成电路。 集成电路包括被配置为向传感器阵列提供第一信号的发射器电路。 集成电路还包括接收器电路，其被配置为响应于提供第一信号而从传感器阵列接收第二信号。 传感器阵列包括响应于第一信号而生成超声波的超声波发射器和被配置为检测超声波的反射的压电接收层。

公开(公告)号：EP3278450B1

公开(公告)日：2019-05-15

申请号：EP16711472.7

申请日：2016-03-09

Applicant: Qualcomm Incorporated

Inventor： LERDWORATAWEE, Jongrit ,  SHI, Song ,  MATHE, Lennart Karl-Axel

IPC: H03F1/02 ,  H03F3/21

公开(公告)号：EP3350747A1

公开(公告)日：2018-07-25

申请号：EP16777821.6

申请日：2016-09-06

Applicant: Qualcomm Incorporated

Inventor： WADHWA, Sameer ,  MATHE, Lennart Karl-Axel

IPC: G06K9/00

CPC classification number: A61B8/5269 ,  A61B8/14 ,  A61B8/4494 ,  G06K9/0002

Abstract: Apparatus and method for generating a DC pixel voltage are disclosed. The apparatus includes an amplifier configured to amplify an input signal to generate a voltage signal, wherein the input signal is generated in response to an ultrasonic wave reflecting off an item-to-be-imaged and propagating via a piezoelectric layer; a noise reduction circuit configured to pass the voltage signal from an output of the amplifier to a node, while reducing a propagation of noise from the output of the amplifier to the node; and a circuit configured to generate a DC pixel voltage based on the reduced-noise voltage signal.

公开(公告)号：WO2014197399A1

公开(公告)日：2014-12-11

申请号：PCT/US2014/040561

申请日：2014-06-02

Applicant: QUALCOMM INCORPORATED

Inventor： MATHE, Lennart Karl-Axel ,  SHI, Yunfei

IPC: H03F1/02 ,  H03F3/195

CPC classification number: H03F1/02 ,  H03F1/0222 ,  H03F1/0227 ,  H03F3/195 ,  H03F2200/102 ,  H03F2200/432 ,  H03F2200/435 ,  H03F2200/504

Abstract: In an exemplary design, an apparatus (100) includes an amplifier (170), a boost converter (180), and a boost controller (190). The amplifier (170) receives an envelope signal (Venv) and a variable boosted supply voltage (Vboost) and provides an output voltage (Vout) and an output current (lout). The boost converter (180) receives a power supply voltage (Vbat) and at least one signal determined based on the envelope signal (Venv) and generates the variable boosted supply voltage (Vboost) based on the power supply voltage (Vbat) and the at least one signal. The boost controller (190) generates the at least one signal (e.g., an enable signal and/or a threshold voltage) for the boost converter (180) based on the envelope signal (Venv) and/or the output voltage (Vout). The boost converter (180) generates the variable boosted supply voltage (Vboost) based on the power supply voltage (Vbat) and the threshold voltage.

Abstract translation: 在示例性设计中，装置（100）包括放大器（170），升压转换器（180）和升压控制器（190）。 放大器（170）接收包络信号（Venv）和可变提升电源电压（Vboost），并提供输出电压（Vout）和输出电流（lout）。 升压转换器（180）接收电源电压（Vbat）和基于包络信号（Venv）确定的至少一个信号，并且基于电源电压（Vbat）产生可变升压电源电压（Vboost） 至少一个信号。 升压控制器（190）基于包络信号（Venv）和/或输出电压（Vout）产生用于升压转换器（180）的至少一个信号（例如，使能信号和/或阈值电压）。 升压转换器（180）基于电源电压（Vbat）和阈值电压产生可变升压的电源电压（Vboost）。

公开(公告)号：WO2014116608A2

公开(公告)日：2014-07-31

申请号：PCT/US2014/012393

申请日：2014-01-21

Applicant: QUALCOMM INCORPORATED

Inventor： MATHE, Lennart Karl-Axel ,  LI, Pengfei ,  SHI, Song ,  SHI, Yunfei ,  RUTKOWSKI, Joseph

IPC: H03G1/00

CPC classification number: H03F1/0222 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/451

Abstract: Techniques for dynamically generating a headroom voltage for an envelope tracking system. In an aspect, an initial headroom voltage is updated when a signal from a power amplifier (PA) indicates that the PA headroom is insufficient. The initial headroom voltage may be updated to an operating headroom voltage that includes the initial voltage plus a deficiency voltage plus a margin. In this manner, the operating headroom voltage may be dynamically selected to minimize power consumption while still ensuring that the PA is linear. In a further aspect, a specific exemplary embodiment of a headroom voltage generator using a counter is described.

Abstract translation: 动态生成包络跟踪系统的净空电压的技术。 在一个方面，当来自功率放大器（PA）的信号指示PA余量不足时，初始净空电压被更新。 初始净空电压可以被更新为包括初始电压加上缺陷电压加上裕度的运行净空电压。 以这种方式，可以动态选择操作净空电压以最小化功耗，同时仍然确保PA是线性的。 在另一方面，描述了使用计数器的净空电压发生器的具体示例性实施例。

公开(公告)号：WO2014116606A1

公开(公告)日：2014-07-31

申请号：PCT/US2014/012391

申请日：2014-01-21

Applicant: QUALCOMM INCORPORATED

Inventor： MATHE, Lennart Karl-Axel ,  RUTKOWSKI, Joseph D. ,  SHI, Song S.

IPC: H03F1/02

CPC classification number: H03G1/0005 ,  H03F1/0238

Abstract: Techniques for preventing reverse current in applications wherein a tracking supply voltage is placed in parallel with a switching power stage. The tracking supply voltage may be boosted to a level higher than a battery supply voltage using, e.g., a boost converter. In an aspect, a negative current detection block is provided to detect negative current flow from the boosted tracking supply voltage to the battery supply voltage. A high-side switch of the switching power stage may be disabled in response to detecting the negative current. To prevent false tripping, the tracking supply voltage may be further compared with the battery supply voltage, and a latch may be provided to further control the high-side switch.

Abstract translation: 在跟踪电源电压与开关功率级并联放置的应用中用于防止反向电流的技术。 使用例如升压转换器，跟踪电源电压可以升高到高于电​​池电源电压的电平。 在一方面，提供负电流检测块以检测从升压的跟踪电源电压到电池电源电压的负电流。 可以响应于检测到负电流而禁用开关功率级的高侧开关。 为了防止错误跳闸，可以将跟踪电源电压进一步与电池电源电压进行比较，并且可以提供锁存器以进一步控制高侧开关。

公开(公告)号：WO2014110457A1

公开(公告)日：2014-07-17

申请号：PCT/US2014/011164

申请日：2014-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： SHI, Song S. ,  LI, Pengfei ,  MATHE, Lennart Karl-Axel ,  SHI, Yunfei

IPC: H03F1/02 ,  H02M3/155

CPC classification number: G05F3/02 ,  H02M3/155 ,  H02M3/1582 ,  H02M2001/008 ,  H03F1/0238

Abstract: Techniques for generating a boost clock signal for a boost converter from a buck converter clock signal, wherein the boost clock signal has a limited frequency range. In an aspect, the boost clock signal has a maximum frequency determined by Vbst / T, wherein Vbst represents the difference between a target output voltage and a battery voltage, and T represents a predetermined cycle duration. The boost converter may include a pulse insertion block to limit the minimum frequency of the boost clock signal, and a dynamic blanking / delay block to limit the maximum frequency of the boost clock signal. Further techniques are disclosed for generally implementing the minimum frequency limiting and maximum frequency limiting blocks.

Abstract translation: 用于从降压转换器时钟信号产生用于升压转换器的升压时钟信号的技术，其中所述升压时钟信号具有有限的频率范围。 在一方面，升压时钟信号具有由Vbst / T确定的最大频率，其中Vbst表示目标输出电压和电池电压之间的差，T表示预定的周期持续时间。 升压转换器可以包括用于限制升压时钟信号的最小频率的脉冲插入块以及限制升压时钟信号的最大频率的动态消隐/延迟块。 公开了通常实现最小频率限制和最大频率限制块的其它技术。

公开(公告)号：WO2019156734A1

公开(公告)日：2019-08-15

申请号：PCT/US2018/064374

申请日：2018-12-07

Applicant: QUALCOMM INCORPORATED

Inventor： DHANASEKARAN, Vijayakumar ,  ZHOU, Qubo ,  MATHE, Lennart Karl-Axel

IPC: G01R31/28 ,  H01L21/66 ,  H01L23/58

Abstract: Various features relate to a test ring including an integrated circuit. The test ring is located around a periphery of the integrated circuit. The test ring includes a first terminal, a second terminal, and a first circuit element, wherein the first terminal is coupled to the first circuit element, and the first circuit element is coupled to the second terminal, wherein the first terminal, the first circuit element and the second terminal are coupled together in series.

公开(公告)号：WO2016160293A1

公开(公告)日：2016-10-06

申请号：PCT/US2016/021596

申请日：2016-03-09

Applicant: QUALCOMM INCORPORATED

Inventor： LERDWORATAWEE, Jongrit ,  SHI, Song ,  MATHE, Lennart Karl-Axel

IPC: H03F1/02

CPC classification number: H03F1/0216 ,  H03F1/0222 ,  H03F3/211 ,  H03F2200/102 ,  H03F2200/453 ,  H03F2200/78

Abstract: The present disclosure includes envelope tracking circuits and methods with adaptive switching frequency. In one embodiment, a circuit comprising an amplifier to receive an envelope tracking signal having an envelope tracking frequency and output voltage and current to a power supply terminal of a power amplifier circuit. A programmable comparator receives an output signal from the amplifier and generates a switching signal having a switching frequency. A switching regulator stage receives the switching signal and outputs a switching current to the power supply terminal. A frequency comparison circuit configures the programmable comparator based on the envelope tracking frequency and the switching frequency so that the switching frequency tracks the envelope tracking frequency.

Abstract translation: 本公开包括具有自适应切换频率的包络跟踪电路和方法。 在一个实施例中，一种包括放大器的电路，用于接收具有包络跟踪频率的包络跟踪信号，并将输出电压和电流输出到功率放大器电路的电源端。 可编程比较器从放大器接收输出信号并产生具有开关频率的开关信号。 开关稳压器级接收开关信号并向开关端输出开关电流。 频率比较电路基于包络跟踪频率和开关频率来配置可编程比较器，使得开关频率跟踪包络跟踪频率。