公开(公告)号：US07787570B2

公开(公告)日：2010-08-31

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

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。

公开(公告)号：US20100159848A1

公开(公告)日：2010-06-24

申请号：US12715705

申请日：2010-03-02

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Darioush Agahi

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Darioush Agahi

IPC: H04B1/38

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：US07605669B2

公开(公告)日：2009-10-20

申请号：US11429032

申请日：2006-05-05

Applicant: Rajasekhar Pullela ,  Tirdad Sowlati ,  Dmitriy Rozenblit

Inventor： Rajasekhar Pullela ,  Tirdad Sowlati ,  Dmitriy Rozenblit

IPC: H03B27/00

CPC classification number: H04B1/30 ,  H03B19/00 ,  H03B27/00

Abstract: A system for generating local oscillator (LO) signals for a quadrature mixer includes an oscillator configured to provide a reference frequency signal, at least one frequency divider configured to divide the reference frequency signal into three offset phase signals, a first summing circuit configured to generate two nominal 90 degree offset phase signals from the three offset phase signals, and a second summing circuit configured to generate at least two amplitude-corrected 90 degree offset-phase quadrature signals.

Abstract translation: 一种用于产生用于正交混频器的本地振荡器（LO）信号的系统，包括配置成提供参考频率信号的振荡器，至少一个分频器，被配置为将参考频率信号分成三个偏移相位信号，第一求和电路被配置为产生 来自三个偏移相位信号的两个标称90度偏移相位信号，以及被配置为产生至少两个幅度校正的90度偏移相位正交信号的第二求和电路。

公开(公告)号：US07548737B2

公开(公告)日：2009-06-16

申请号：US11219483

申请日：2005-09-02

Applicant: William J. Domino ,  Scott A. Griffin ,  Dmitriy Rozenblit

Inventor： William J. Domino ,  Scott A. Griffin ,  Dmitriy Rozenblit

IPC: H04B1/18

CPC classification number: H03C3/0966 ,  H03C3/0941 ,  H03C3/0958 ,  H03D3/007 ,  H04B1/30 ,  H04B1/408 ,  H04L27/20

Abstract: A system for transmitting and receiving data is provided. The system includes a direct-conversion receiver that receives a signal modulated on a carrier frequency signal. The direct-conversion receiver includes one or more subharmonic local oscillator mixers. A local oscillator is connected to the direct conversion receiver, and generates a signal having a frequency equal to a subharmonic of the carrier frequency signal. A transmitter is connected to the local oscillator, which uses the local oscillator signal to transmit outgoing data.

Abstract translation: 提供了一种用于发送和接收数据的系统。 该系统包括接收在载波频率信号上调制的信号的直接转换接收机。 直接转换接收器包括一个或多个次谐波本地振荡器混频器。 本地振荡器连接到直接转换接收器，并且产生具有等于载波频率信号的次谐波的频率的信号。 发送器连接到本地振荡器，其使用本地振荡器信号来发送输出数据。

公开(公告)号：US07376116B2

公开(公告)日：2008-05-20

申请号：US10357125

申请日：2003-02-03

Applicant: Dmitriy Rozenblit ,  William J. Domino ,  Morten Damgaard ,  Rahul Magoon

Inventor： Dmitriy Rozenblit ,  William J. Domino ,  Morten Damgaard ,  Rahul Magoon

IPC: H04B7/216

CPC classification number: H04B1/006 ,  H04B1/0003 ,  H04B1/0028 ,  H04B1/0032 ,  H04B1/406 ,  H04W88/06

Abstract: A software defined transmit architecture includes a plurality of individually selectable components that can be selectively enabled to transmit a data signal that complies with any of a plurality of transmission standards. The software defined transmit architecture comprises components that can be enabled by associated logic to transmit, for example, communications signals that comply with the global system for mobile communications (GSM), enhanced data rates for GSM evolution (EDGE), which employs TDMA, and wide band code division multiple access (WCDMA) transmission standards. A single transmit architecture supports multiple transmission standards, thus minimizing the number of components in a multi-band, multi-mode portable transceiver, while reducing the number of active components.

Abstract translation: 软件定义的发射架构包括多个可单独选择的组件，其可以被选择性地启用以发送符合多个传输标准中的任何一个的数据信号。 软件定义的发射架构包括可由相关逻辑启用的组件，例如，发送符合全球移动通信系统（GSM）的通信信号，采用TDMA的GSM演进增强数据速率（EDGE），以及 宽带码分多址（WCDMA）传输标准。 单个传输架构支持多种传输标准，从而最大限度地减少多频带多模式便携式收发器中的组件数量，同时减少有源组件的数量。

公开(公告)号：US20080009248A1

公开(公告)日：2008-01-10

申请号：US11483687

申请日：2006-07-10

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Morten Damgaard ,  Darioush Agahi

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Morten Damgaard ,  Darioush Agahi

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H04B1/04 ,  H03F1/0227 ,  H03G3/3047 ,  H04B2001/0416 ,  H04W52/367 ,  H04W52/52

Abstract: A supply voltage controlled power amplifier includes a power amplifier, a closed power control loop configured to generate a power control signal, and a voltage regulator coupled to the power control loop, the voltage regulator including a first regulator stage, a second regulator stage, and a peak detector, wherein an output of the second regulator stage is applied as a feedback signal to the first regulator stage and wherein an output of the first regulator stage is decreased to a level consistent with an output of the power amplifier and an additional operating buffer amount.

Abstract translation: 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回路和耦合到功率控制回路的电压调节器，所述电压调节器包括第一调节器级，第二调节器级和 峰值检测器，其中将第二调节器级的输出作为反馈信号施加到第一调节器级，并且其中第一调节器级的输出减小到与功率放大器的输出和附加操作缓冲器一致的电平 量。

公开(公告)号：US20070264946A1

公开(公告)日：2007-11-15

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: H04B1/04 ,  H01Q11/12

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: 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的闭合功率控制回路;以及功率控制电路， 功率控制信号，如果功率放大器工作在饱和模式。

公开(公告)号：US20070259642A1

公开(公告)日：2007-11-08

申请号：US11429032

申请日：2006-05-05

Applicant: Rajasekhar Pullela ,  Tirdad Sowlati ,  Dmitriy Rozenblit

Inventor： Rajasekhar Pullela ,  Tirdad Sowlati ,  Dmitriy Rozenblit

IPC: H04B7/00

CPC classification number: H04B1/30 ,  H03B19/00 ,  H03B27/00

Abstract: A system for generating local oscillator (LO) signals for a quadrature mixer includes an oscillator configured to provide a reference frequency signal, at least one frequency divider configured to divide the reference frequency signal into three offset phase signals, a first summing circuit configured to generate two nominal 90 degree offset phase signals from the three offset phase signals, and a second summing circuit configured to generate at least two amplitude-corrected 90 degree offset-phase quadrature signals.

Abstract translation: 一种用于产生用于正交混频器的本地振荡器（LO）信号的系统，包括配置成提供参考频率信号的振荡器，至少一个分频器，被配置为将参考频率信号分成三个偏移相位信号，第一求和电路被配置为产生 来自三个偏移相位信号的两个标称90度偏移相位信号，以及被配置为产生至少两个幅度校正的90度偏移相位正交信号的第二求和电路。

公开(公告)号：US07277678B2

公开(公告)日：2007-10-02

申请号：US10281486

申请日：2002-10-28

Applicant: Dmitriy Rozenblit ,  William J. Domino ,  Darioush Agahi

Inventor： Dmitriy Rozenblit ,  William J. Domino ,  Darioush Agahi

IPC: H01Q11/12 ,  H01B1/04

CPC classification number: H03G3/3047 ,  H03F1/0211 ,  H03F2200/294 ,  H03F2200/372

Abstract: A system for a fast, closed power control loop that quickly adjusts the output power of a power amplifier in a non-constant amplitude modulation format. Embodiments of the invention allow fast and precise closed loop power control in a communication system that has a transmit signal that includes a phase modulated component and an amplitude modulated signal component. By detecting the level of the transmit signal before and after the power amplifier, the invention ignores changes in the amplitude of the transmit signal, resulting in an accurate measure of the power amplifier gain. The difference between the level of the transmit signal before and after the power amplifier provides a signal that represents the gain of the power amplifier. The gain signal is compared with a reference signal to develop an error signal. The error signal is used to control the output of the power amplifier.

Abstract translation: 一种用于快速，闭合的功率控制回路的系统，其以非恒定幅度调制格式快速调节功率放大器的输出功率。 本发明的实施例允许在具有包括相位调制分量和幅度调制信号分量的发射信号的通信系统中的快速和精确的闭环功率控制。 通过检测功率放大器之前和之后的发射信号的电平，本发明忽略了发射信号幅度的变化，导致功率放大器增益的精确测量。 功率放大器之前和之后的发射信号的电平之间的差异提供了表示功率放大器的增益的信号。 将增益信号与参考信号进行比较以产生误差信号。 误差信号用于控制功率放大器的输出。

公开(公告)号：US20070054648A1

公开(公告)日：2007-03-08

申请号：US11220030

申请日：2005-09-06

Applicant: Rajasekhar Pullela ,  Tirdad Sowlati ,  Dmitriy Rozenblit

Inventor： Rajasekhar Pullela ,  Tirdad Sowlati ,  Dmitriy Rozenblit

IPC: H04B1/26 ,  H04B15/00

CPC classification number: H04B1/28 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/165 ,  H03D2200/0019 ,  H03D2200/0084

Abstract: A low noise mixer comprises a first mixer core configured to receive a radio frequency (RF) input signal having an RF frequency, and a first local oscillator signal, wherein the first local oscillator signal is at a frequency that is nominally twice the frequency of the RF frequency, the first mixer core configured to switch the RF input signal to at least one secondary mixer core at a frequency that coincides with the frequency of the first local oscillator signal, the at least one secondary mixer core configured to receive the switched RF input signal and a second local oscillator signal, where the second local oscillator signal is at the same nominal frequency as the RF input signal, and wherein switching the RF input signal at the frequency of the first local oscillator signal substantially eliminates flicker noise associated with the down-conversion process.

Abstract translation: 低噪声混频器包括被配置为接收具有RF频率的射频（RF）输入信号和第一本地振荡器信号的第一混频器核心，其中第一本地振荡器信号的频率是标称频率为 RF频率，所述第一混频器核心被配置为以与所述第一本机振荡器信号的频率一致的频率将所述RF输入信号切换到至少一个辅助混频器内核，所述至少一个辅助混频器核心被配置为接收所述切换的RF输入 信号和第二本地振荡器信号，其中第二本机振荡器信号处于与RF输入信号相同的标称频率，并且其中以第一本地振荡器信号的频率切换RF输入信号基本上消除与下降相关联的闪烁噪声 转换过程。