公开(公告)号：US08639200B2

公开(公告)日：2014-01-28

申请号：US13230070

申请日：2011-09-12

Applicant: Elias Dagher ,  Kevin Juan ,  Man H. Ku ,  Dmitriy Rozenblit

Inventor： Elias Dagher ,  Kevin Juan ,  Man H. Ku ,  Dmitriy Rozenblit

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H04W52/52

Abstract: A controller enables the integration of a DC-DC converter in a mobile handset. The controller includes an input conditioner and an event sensor. The input conditioner uses a peak detector to track the output of a regulator and responds to available baseband input signals. The event sensor directs coupling between a voltage source and the DC-DC converter in response to a bypass event.

Abstract translation: 控制器使得DC-DC转换器能够集成在移动手持机中。 控制器包括输入调节器和事件传感器。 输入调节器使用峰值检测器来跟踪调节器的输出并响应可用的基带输入信号。 事件传感器响应于旁路事件引导电压源和DC-DC转换器之间的耦合。

公开(公告)号：US08451960B2

公开(公告)日：2013-05-28

申请号：US12771559

申请日：2010-04-30

Applicant: Dmitriy Rozenblit ,  Masoud Kahrizi ,  Morten Damgaard

Inventor： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Morten Damgaard

IPC: H04L27/08

CPC classification number: H04W52/12 ,  H03G3/001 ,  H03G3/3089 ,  H04B2001/0416

Abstract: Embodiments provide improved systems and methods of gain control and calibration for wireless transmitters. In particular, embodiments allow linear gain control over the entire transmitter gain control range, independent of temperature/process variations. Embodiments require very low power consumption compared to existing approaches. Embodiments may also be used for gain control calibration during production time, thereby substantially reducing production calibration time and cost.

Abstract translation: 实施例提供了用于无线发射机的增强控制和校准的改进的系统和方法。 特别地，实施例允许在整个发射机增益控制范围内的线性增益控制，与温度/过程变化无关。 与现有方法相比，实施例需要非常低的功耗。 实施例也可用于在生产时间期间的增益控制校准，从而大大减少生产校准时间和成本。

公开(公告)号：US08406707B2

公开(公告)日：2013-03-26

申请号：US13419741

申请日：2012-03-14

Applicant: Rajasekhar Pullela ,  Dmitriy Rozenblit ,  Hamid Firouzkouhi

Inventor： Rajasekhar Pullela ,  Dmitriy Rozenblit ,  Hamid Firouzkouhi

IPC: H04B1/04 ,  H04B15/00

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/165 ,  H03D2200/0047 ,  H03D2200/0086

Abstract: Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.

Abstract translation: 提供了用于产生用于谐波抑制混频器的本地振荡器（LO）信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器（LO）信号的系统。 一个这样的系统包括本地振荡器，N分频分频器，除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号，并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。

公开(公告)号：US08331881B2

公开(公告)日：2012-12-11

申请号：US12696845

申请日：2010-01-29

Applicant: Dmitriy Rozenblit ,  Ahmad Mirzaei

Inventor： Dmitriy Rozenblit ,  Ahmad Mirzaei

IPC: H01Q11/12

CPC classification number: H04B1/04

Abstract: Embodiments enable a multi-band transmitter with significantly reduced architecture area by allowing maximum reuse of transmitter stages across supported frequency bands and signal standards. Further, embodiments allow a monolithic transmitter implementation by providing an integration-friendly differential to single-ended conversion stage. According to embodiments, the differential to single-ended conversion stage is readily configurable according to the frequency band and signal standard of operation of the transmitter.

Abstract translation: 通过允许在所支持的频带和信号标准上的发射机级的最大重用，实施例使得具有显着降低的架构区域的多频带发射机。 此外，实施例允许通过向单端转换级提供集成友好的差分来实现单片发射机。 根据实施例，差分到单端转换级可以根据发射机的频带和信号标准容易地配置。

公开(公告)号：US20120171973A1

公开(公告)日：2012-07-05

申请号：US13419741

申请日：2012-03-14

Applicant: Rajasekhar Pullela ,  Dmitriy Rozenblit ,  Hamid Firouzkouhi

Inventor： Rajasekhar Pullela ,  Dmitriy Rozenblit ,  Hamid Firouzkouhi

IPC: H04B1/04 ,  G06G7/00 ,  H04B1/26

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/165 ,  H03D2200/0047 ,  H03D2200/0086

Abstract: Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.

Abstract translation: 提供了用于产生用于谐波抑制混频器的本地振荡器（LO）信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器（LO）信号的系统。 一个这样的系统包括本地振荡器，N分频分频器，除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号，并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。

公开(公告)号：US20110306391A1

公开(公告)日：2011-12-15

申请号：US12802603

申请日：2010-06-09

Applicant: Ahmad Mirzaei ,  Dmitriy Rozenblit ,  Hooman Darabi ,  Masoud Kahrizi

Inventor： Ahmad Mirzaei ,  Dmitriy Rozenblit ,  Hooman Darabi ,  Masoud Kahrizi

IPC: H04W52/04

CPC classification number: H03G3/3042

Abstract: According to one embodiment, a radio frequency (RF) transceiver includes a transmitter enabling efficient preamplification gain control. The RF transceiver comprises a receiver and a power amplifier (PA) for amplifying a transmit signal of the transmitter. The transmitter is configured to provide pre-PA gain control for preamplifying the transmit signal before amplification by the PA, wherein substantially all of the pre-PA gain control is provided when the transmit signal is at a transmit frequency of the transmitter. In one embodiment, the transmitter includes a PA driver comprising in combination: a transconductance amplifier, a current steering block, and an output transformer. Each of the transconductance amplifier, current steering block, and output transformer is configured to contribute a respective variable gain control to the pre-PA gain control provided by the PA driver.

Abstract translation: 根据一个实施例，射频（RF）收发器包括能够进行有效的前置放大增益控制的发射器。 RF收发器包括用于放大发射机的发射信号的接收机和功率放大器（PA）。 发射器被配置为提供预PA增益控制，用于在PA放大之前对发射信号进行前置放大，其中当发射信号处于发射机的发射频率时，提供基本上所有的预PA增益控制。 在一个实施例中，发射机包括PA驱动器，其包括：跨导放大器，电流转向块和输出变压器。 跨导放大器，电流控制块和输出变压器中的每一个被配置为对由PA驱动器提供的前PA增益控制贡献相应的可变增益控制。

公开(公告)号：US07706760B2

公开(公告)日：2010-04-27

申请号：US11431758

申请日：2006-05-10

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Darioush Agahi

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Darioush Agahi

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/32 ,  H03F1/34 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/438 ,  H03G3/3047 ,  H04B2001/0433

Abstract: A system for saturation detection, correction and recovery in a power amplifier includes a power amplifier, a closed power control loop configured to develop a power control signal (VPC), and power control circuitry configured to reduce the power control signal if the power amplifier is operating in a saturation mode.

Abstract translation: 一种用于功率放大器中的饱和度检测，校正和恢复的系统包括：功率放大器，被配置为开发功率控制信号（VPC）的闭合功率控制回路;以及功率控制电路，其被配置为如果功率放大器为 在饱和模式下工作。

公开(公告)号：US20090325510A1

公开(公告)日：2009-12-31

申请号：US12145599

申请日：2008-06-25

Applicant: Rajasekhar Pullela ,  Dmitriy Rozenblit ,  Hamid Firouzkouhi

Inventor： Rajasekhar Pullela ,  Dmitriy Rozenblit ,  Hamid Firouzkouhi

IPC: G06G7/161 ,  H03K5/00

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/165 ,  H03D2200/0047 ,  H03D2200/0086

Abstract: Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.

Abstract translation: 提供了用于产生用于谐波抑制混频器的本地振荡器（LO）信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器（LO）信号的系统。 一个这样的系统包括本地振荡器，N分频分频器，除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号，并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。

公开(公告)号：US07499682B2

公开(公告)日：2009-03-03

申请号：US11137197

申请日：2005-05-24

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati

IPC: H04B1/04

CPC classification number: H03F1/0233 ,  H03F1/02 ,  H03F1/0205 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/504 ,  H04B2001/045

Abstract: A supply voltage controlled power amplifier that comprises a power amplifier, a closed power control feedback loop configured to generate a power control signal, and a dual voltage regulator coupled to the power control feedback loop, the dual voltage regulator comprising a first regulator stage and a second regulator stage, wherein the closed power control loop minimizes noise generated by the first regulator stage.

Abstract translation: 一种电源电压控制功率放大器，包括功率放大器，被配置为产生功率控制信号的闭合功率控制反馈回路，以及耦合到功率控制反馈回路的双电压调节器，所述双电压调节器包括第一调节器级和 第二调节器级，其中闭合功率控制回路最小化由第一调节器级产生的噪声。

公开(公告)号：US20070014381A1

公开(公告)日：2007-01-18

申请号：US11180940

申请日：2005-07-13

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Morten Damgaard

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Morten Damgaard

IPC: H03D1/24 ,  H04L25/49 ,  H04L27/04

CPC classification number: H04L27/3809 ,  H03C1/00 ,  H03G3/3047 ,  H04L27/08 ,  H04L27/361 ,  H04W52/06 ,  H04W52/36

Abstract: A closed loop power control system for a radio frequency (RF) transmitter comprises a first variable gain element located in a power control loop and configured to receive a power level signal and an inverse representation of a power control signal, a second variable gain element located in the power control loop and configured to receive an error signal and the power control signal, and a third variable gain element configured to receive an amplitude modulated (AM) signal and the power control signal, the third variable gain element having a gain characteristic configured to operate to reduce the gain applied to the AM signal when the power control signal falls below a minimum predetermined value, and to provide the AM signal as a reference signal.

Abstract translation: 用于射频（RF）发射机的闭环功率控制系统包括位于功率控制环路中并被配置为接收功率电平信号和功率控制信号的反向表示的第一可变增益元件，位于 在所述功率控制回路中并且被配置为接收误差信号和所述功率控制信号，以及第三可变增益元件，被配置为接收幅度调制（AM）信号和所述功率控制信号，所述第三可变增益元件具有构造的增益特性 以在功率控制信号低于最小预定值时降低施加到AM信号的增益，并且提供AM信号作为参考信号。