公开(公告)号：US20140043098A1

公开(公告)日：2014-02-13

申请号：US13584104

申请日：2012-08-13

Applicant: Dmitriy Rozenblit

Inventor： Dmitriy Rozenblit

IPC: H03F1/02

CPC classification number: H03F1/0222 ,  H03F1/0238 ,  H03F1/025 ,  H03F3/245 ,  H03F2200/336 ,  H03F2200/405 ,  H03F2200/408 ,  H03F2200/507 ,  H03F2200/511 ,  H03F2200/516

Abstract: The present application discloses various implementations of a mobile device including a power amplifier (PA) having a driving stage coupled to an output stage. The driving stage is configured to be selectably powered by one of a first voltage supply and a second voltage supply. The output stage is configured to be powered by the second voltage supply. The mobile device further includes a voltage supply selection switch configured to selectably power the driving stage by the second voltage supply when an output power of the PA is less than or equal to a threshold power.

Abstract translation: 本申请公开了包括具有耦合到输出级的驱动级的功率放大器（PA）的移动设备的各种实施方式。 驱动级被配置为可选择地由第一电压源和第二电压源之一供电。 输出级配置为由第二电源供电。 移动设备还包括电压供应选择开关，其被配置为当PA的输出功率小于或等于阈值功率时，通过第二电压供应器可选择地为驱动级供电。

公开(公告)号：US08165538B2

公开(公告)日：2012-04-24

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: 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：US07542741B2

公开(公告)日：2009-06-02

申请号：US11343442

申请日：2006-01-31

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Dongsoo Koh

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Dongsoo Koh

IPC: H04B1/04

CPC classification number: H03G3/3042

Abstract: A system for compensating gain control variations in a power amplifier comprises a power control element configured to receive a power control signal and an instantaneous envelope power reference signal, an adder configured to combine the power control signal and the instantaneous envelope power reference signal to obtain a modified power level signal, and a mapping function configured to receive the modified power level signal and configured to alter a control input to a variable gain amplifier, the variable gain amplifier controlling an adjustable input to the power amplifier.

Abstract translation: 用于补偿功率放大器中的增益控制变化的系统包括被配置为接收功率控制信号和瞬时包络功率参考信号的功率控制元件，被配置为组合功率控制信号和瞬时包络功率参考信号以获得 修改的功率电平信号，以及映射功能，被配置为接收修改的功率电平信号并且被配置为改变对可变增益放大器的控制输入，所述可变增益放大器控制到功率放大器的可调输入。

公开(公告)号：US07483678B2

公开(公告)日：2009-01-27

申请号：US11235907

申请日：2005-09-27

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Rajasekhar Pullela

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Rajasekhar Pullela

IPC: H04B1/38

CPC classification number: H03B19/14 ,  H03G3/3047 ,  H03L7/081 ,  H03L7/087 ,  H03L7/0992 ,  H03L7/1978 ,  H03L7/23

Abstract: A single chip GSM/EDGE transceiver comprises a fully differential receive chain, a subharmonic mixer in the receive chain, the subharmonic mixer configured to receive a radio frequency (RF) input signal and a local oscillator (LO) signal that is phase-shifted by a nominal 45 degrees, and a synthesizer having a voltage controlled oscillator and having at least one frequency divider to generate desired transmit and receive LO signals. The transceiver also comprises a transmitter having a closed power control loop, and a harmonic rejection modulator, the use thereof made possible by a frequency plan designed to allow the synthesizer to develop the transmit and receive LO signals without a frequency multiplier.

Abstract translation: 单芯片GSM / EDGE收发器包括全差分接收链，接收链中的次谐波混频器，次谐波混频器被配置为接收射频（RF）输入信号和本地振荡器（LO）信号，该信号被相移 一个标称45度的合成器，以及具有压控振荡器并具有至少一个分频器以产生所需发射和接收LO信号的合成器。 收发器还包括具有闭合功率控制回路和谐波抑制调制器的发射机，其使用通过设计成允许合成器在没有倍频器的情况下开发发射和接收LO信号的频率计划成为可能。

公开(公告)号：US20070072577A1

公开(公告)日：2007-03-29

申请号：US11235907

申请日：2005-09-27

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Rajasekhar Pullela

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Rajasekhar Pullela

IPC: H04B1/28 ,  H04M1/00 ,  H04B1/44

CPC classification number: H03B19/14 ,  H03G3/3047 ,  H03L7/081 ,  H03L7/087 ,  H03L7/0992 ,  H03L7/1978 ,  H03L7/23

Abstract: A single chip GSM/EDGE transceiver comprises a fully differential receive chain, a subharmonic mixer in the receive chain, the subharmonic mixer configured to receive a radio frequency (RF) input signal and a local oscillator (LO) signal that is phase-shifted by a nominal 45 degrees, and a synthesizer having a voltage controlled oscillator and having at least one frequency divider to generate desired transmit and receive LO signals. The transceiver also comprises a transmitter having a closed power control loop, and a harmonic rejection modulator, the use thereof made possible by a frequency plan designed to allow the synthesizer to develop the transmit and receive LO signals without a frequency multiplier.

Abstract translation: 单芯片GSM / EDGE收发器包括全差分接收链，接收链中的次谐波混频器，次谐波混频器被配置为接收射频（RF）输入信号和本地振荡器（LO）信号，该信号被相移 一个标称45度的合成器，以及具有压控振荡器并具有至少一个分频器以产生所需发射和接收LO信号的合成器。 收发器还包括具有闭合功率控制回路和谐波抑制调制器的发射机，其使用通过设计成允许合成器在没有倍频器的情况下开发发射和接收LO信号的频率计划成为可能。

公开(公告)号：US20070072556A1

公开(公告)日：2007-03-29

申请号：US11348001

申请日：2006-02-06

Applicant: Dmitriy Rozenblit ,  Rajasekhar Pullela ,  Tirdad Sowlati ,  Shahrzad Tadjpour

Inventor： Dmitriy Rozenblit ,  Rajasekhar Pullela ,  Tirdad Sowlati ,  Shahrzad Tadjpour

IPC: H04B1/38

CPC classification number: H03B19/14 ,  H03G3/3047 ,  H03L7/081 ,  H03L7/087 ,  H03L7/0992 ,  H03L7/1978 ,  H03L7/23

Abstract: A variable gain frequency multiplier comprises a multiplier circuit and a control circuit configured to receive a power control signal, the power control signal being proportional to a power output signal.

Abstract translation: 可变增益倍频器包括乘法器电路和被配置为接收功率控制信号的控制电路，功率控制信号与功率输出信号成比例。

公开(公告)号：US20060270366A1

公开(公告)日：2006-11-30

申请号：US11137197

申请日：2005-05-24

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati

IPC: H04B1/04 ,  H01Q11/12

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.

公开(公告)号：US06950636B2

公开(公告)日：2005-09-27

申请号：US10313611

申请日：2002-12-06

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

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

IPC: H03G3/00 ,  H03G3/30 ,  H04B1/04 ,  H01Q11/12

CPC classification number: H03G3/3042 ,  H03G3/004 ,  H04B1/0466 ,  H04B2001/0416

Abstract: A linear power control loop for a power amplifier is disclosed. Embodiments of the invention linearly control the power amplifier output, prevent the power amplifier from failure induced by excessive supply current by reducing power amplifier bias current, and provide a mechanism to detect whether the power amplifier is operating in a saturation condition.

Abstract translation: 公开了一种用于功率放大器的线性功率控制回路。 本发明的实施例线性地控制功率放大器输出，通过降低功率放大器偏置电流来防止功率放大器由过大的电源电流引起的故障，并提供检测功率放大器是否工作在饱和状态的机制。

公开(公告)号：US06795712B1

公开(公告)日：2004-09-21

申请号：US09665820

申请日：2000-09-20

Applicant: Nooshin D. Vakilian ,  Dmitriy Rozenblit ,  William J. Domino ,  Morten Damgaard

Inventor： Nooshin D. Vakilian ,  Dmitriy Rozenblit ,  William J. Domino ,  Morten Damgaard

IPC: H04B7216

CPC classification number: H03F1/0211 ,  H03F1/0233 ,  H03F2200/294 ,  H03F2200/372 ,  H03G3/3047

Abstract: A closed power control feedback loop system allows a single portable transceiver architecture to be used for systems in which a transmit signal including both a phase modulated (PM) component and an amplitude modulated (AM) component are supplied to a power amplifier and in systems in which the transmit signal has only a PM component supplied to a power amplifier. By injecting the inverse of the AM portion of the desired transmit signal into the closed power control feedback loop, the feedback loop will not cancel the AM portion of the signal, thus allowing a system where both a PM component and an AM component of the transmit signal are present at the output of the power amplifier to function using a closed power control feedback loop.

Abstract translation: 闭合的功率控制反馈回路系统允许单个便携式收发器架构用于其中包括相位调制（PM）分量和调幅（AM）分量两者的发射信号被提供给功率放大器的系统中， 其中发送信号仅具有提供给功率放大器的PM分量。 通过将期望的发射信号的AM部分的反相注入到闭合功率控制反馈环路中，反馈回路将不会消除信号的AM部分，从而允许其中PM分量和发射的AM分量两者的系统 信号存在于功率放大器的输出端，以使用闭合功率控制反馈回路工作。

公开(公告)号：US06658237B1

公开(公告)日：2003-12-02

申请号：US09386865

申请日：1999-08-31

Applicant: Dmitriy Rozenblit ,  William J. Domino ,  Morten Damgaard ,  Mark Oskowsky

Inventor： Dmitriy Rozenblit ,  William J. Domino ,  Morten Damgaard ,  Mark Oskowsky

IPC: H04B144

CPC classification number: H04B1/406 ,  H03D3/006 ,  H03D7/1408 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/009 ,  H04B1/30

Abstract: A multi-band transceiver having a receiver portion and a transmitter portion, wherein the receiver portion includes a direct conversion receiver system for directly downconverting a signal to baseband frequencies. The direct conversion receiver system includes a frequency translator having first and second inputs and an output. A first signal at a first frequency is applied to the first input. A second signal having a second frequency is applied to the second input. The first frequency is preferably an nth order subharmonic of the second frequency, wherein n is an integer greater than 1. A low pass filter is integral with or inherent to the first input, and a high pass filter is integral with or inherent to the second input. The corner frequencies of both the low pass and high pass filters is above the first frequency and below the second frequency.

Abstract translation: 一种具有接收机部分和发射机部分的多频带收发机，其中所述接收机部分包括用于将信号直接下变频到基带频率的直接转换接收机系统。 直接转换接收机系统包括具有第一和第二输入和输出的频率转换器。 将第一频率的第一信号施加到第一输入端。 具有第二频率的第二信号被施加到第二输入端。 第一频率优选地是第二频率的第n次次谐波，其中n是大于1的整数。低通滤波器与第一输入一体或固有，并且高通滤波器与第二频率成一体或固有的 输入。 低通滤波器和高通滤波器的转角频率高于第一频率并低于第二频率。