公开(公告)号：US20070264947A1

公开(公告)日：2007-11-15

申请号：US11431759

申请日：2006-05-10

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

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

IPC: H01Q11/12

CPC classification number: H03G3/3047

Abstract: A system for saturation detection and compensation in a power amplifier includes a power amplifier, a closed power control loop configured to develop a power control signal (VPC), a comparator configured to receive the power control signal and a reference signal, the comparator also configured to determine whether the power amplifier is operating in a saturation mode, and power control circuitry configured to reduce the power control signal if the power amplifier is operating in a saturation mode.

Abstract translation: 功率放大器中的饱和检测和补偿系统包括：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;配置成接收功率控制信号的比较器;以及 参考信号，所述比较器还被配置为确定所述功率放大器是否工作在饱和模式;以及功率控制电路，其被配置为如果所述功率放大器在饱和模式下工作，则降低所述功率控制信号。

公开(公告)号：US07218951B2

公开(公告)日：2007-05-15

申请号：US10885162

申请日：2004-07-06

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

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

IPC: H04B7/00 ,  H04B1/04

CPC classification number: H04W52/52 ,  H03F1/0272 ,  H03F2200/294 ,  H03F2200/372 ,  H04B2001/0416

Abstract: A single continuous closed-loop power control feedback system provides seamless power control for a power amplifier and also enables an AM signal to be injected into the power amplifier through the power amplifiers' control port. The AM signal is developed by an I/Q modulator and supplied to a comparator located in the power control loop. By using leakage from the power amplifier as feedback to a phase locked loop during initial power amplifier power ramp-up, the single continuous closed-loop power control system provides continuous feedback to the phase locked loop during the entire power amplification ramp-up period and eliminates the need for multiple feedback loops.

Abstract translation: 单个连续闭环功率控制反馈系统为功率放大器提供无缝功率控制，并且还可以通过功率放大器的控制端口将AM信号注入功率放大器。 AM信号由I / Q调制器开发，并提供给位于功率控制回路中的比较器。 在初始功率放大器功率提升期间，通过使用来自功率放大器的泄漏作为对锁相环的反馈，单个连续闭环功率控制系统在整个功率放大加速周期期间向锁相环提供连续反馈，并且 消除了对多个反馈环路的需要。

公开(公告)号：US06961547B2

公开(公告)日：2005-11-01

申请号：US10233231

申请日：2002-08-30

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

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

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H04B1/04

Abstract: A translation loop signal upconverter is disclosed. Embodiments of the invention minimize nth order harmonics and spurious tones in the radio frequency output spectrum of a portable transceiver. In one embodiment, the invention is a signal upconverter, comprising a modulator configured to develop a modulated intermediate frequency (IF) signal at a fundamental frequency, the modulated IF signal also including a plurality of nth order components, a synchronous oscillator configured to receive the modulated IF signal, the synchronous oscillator also configured to operate at the fundamental frequency of the modulated IF signal, thereby providing an IF signal substantially free of the nth order components, and a translation loop having a phase locked loop, the translation loop configured to receive the IF signal output of the synchronous oscillator, and supply a radio frequency (RF) output signal to a power amplifier.

Abstract translation: 公开了一种平移环路信号上变频器。 本发明的实施例使便携式收发器的射频输出频谱中的第n级次谐波和伪噪声最小化。 在一个实施例中，本发明是一种信号上变频器，包括调制器，其被配置为开发基频的调制中频（IF）信号，调制IF信号还包括多个第n个次级分量 配置成接收所述经调制的IF信号的同步振荡器，所述同步振荡器还被配置为在所述调制IF信号的基频处工作，由此提供基本上不含所述第n个次级分量的IF信号， 以及具有锁相环的平移环路，所述平移环路被配置为接收所述同步振荡器的IF信号输出，并将射频（RF）输出信号提供给功率放大器。

公开(公告)号：US06466069B1

公开(公告)日：2002-10-15

申请号：US09718615

申请日：2000-11-21

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

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

IPC: H03L706

CPC classification number: H03L7/107 ,  H03L7/0898 ,  H03L7/1072 ,  H03L7/18 ,  H03L7/1974

Abstract: This invention provides a charge pump biasing circuit that varies the bias when the phase lock loop changes frequency to improve the settling time of the phase lock loop. During a frequency change, the charge pump output current taper off as the phase lock loop approaches the desired frequency. The charge pump biasing circuit allows the phase lock loop to change frequencies faster and minimizes spurious sideband noise once the loop has settled.

Abstract translation: 本发明提供一种电荷泵偏置电路，其在锁相环改变频率时改变偏压，以改善锁相环的稳定时间。 在频率变化期间，当锁相环接近所需频率时，电荷泵输出电流逐渐减小。 电荷泵偏置电路允许锁相环更快地改变频率，并且一旦环路已经稳定就最小化杂散边带噪声。

公开(公告)号：US06360087B1

公开(公告)日：2002-03-19

申请号：US09260919

申请日：1999-03-02

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

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

IPC: H04B106

CPC classification number: H04B1/406 ,  H03D3/006 ,  H03D7/1408 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0047 ,  H03D2200/009 ,  H04B1/30

Abstract: A direct conversion receiver system is provided in which a first input signal at a first frequency is applied to a first input port of a multiplier, a second input signal at a second frequency equal to about {fraction (1/n)} times the first frequency, wherein n is an integer, is applied to a second input port of the multiplier. A first filter coupled to the first input port is configured to substantially filter out any leakage at the second frequency which may be present. A second filter coupled to the second input port is configured to substantially filter out any leakage at the first frequency which may be present. The multiplier is configured to produce a signal at an output port thereof which is derived from the product of the first and second signals. In one embodiment, the output is representative of the product of the filtered first signal and a multiplication factor which switches at n times the second frequency. The output of the multiplier is coupled to a third filter. The output signal has a baseband component and another component. The third filter is configured to substantially filter out the other component and substantially maintain the baseband component in the output signal. In one implementation example, the multiplier is a mixer initializing half-frequency injection, such that the LO frequency is about ½ the RF frequency.

Abstract translation: 提供一种直接转换接收机系统，其中以第一频率的第一输入信号被施加到乘法器的第一输入端口，第二频率的第二输入信号等于第一频率的大约{分数（1 / n）}倍） 频率，其中n是整数，被施加到乘法器的第二输入端口。 耦合到第一输入端口的第一滤波器被配置为基本上滤除可能存在的第二频率处的任何泄漏。 耦合到第二输入端口的第二滤波器被配置为基本上滤除可能存在的第一频率处的任何泄漏。 乘法器被配置为在其输出端口处产生从第一和第二信号的乘积导出的信号。 在一个实施例中，输出代表滤波后的第一信号和在第二频率n倍切换的乘法因子的乘积。 乘法器的输出耦合到第三个滤波器。 输出信号具有基带分量和另一分量。 第三滤波器被配置为基本上滤除另一分量并且基本上保持输出信号中的基带分量。 在一个实施例中，乘法器是混频器初始化半频率注入，使得LO频率约为RF频率的1/2。

公开(公告)号：US06078167A

公开(公告)日：2000-06-20

申请号：US47242

申请日：1998-03-24

Applicant: Mark Oskowsky ,  Dmitriy Rozenblit

Inventor： Mark Oskowsky ,  Dmitriy Rozenblit

IPC: H02M3/07 ,  H02M3/158 ,  G05F1/10 ,  G05F1/40

CPC classification number: H02M3/158

Abstract: A voltage upconverter circuit wherein a switching voltage regulator circuit is used to charge a capacitor from a battery during an idle interval of portable phone transmission and wherein the charged capacitor is thereafter switched in series with the battery voltage for supply to a load during signal transmission, resulting in a smaller, less expensive and more efficient voltage upconverter circuit.

Abstract translation: 一种升压转换器电路，其中在便携式电话传输的空闲间隔期间使用开关电压调节器电路从电池对电容器充电，并且此后，所述充电电容器与所述电池电压串联切换以在信号传输期间供应到负载， 导致更小，更便宜和更有效的电压上变频电路。

公开(公告)号：US08648657B1

公开(公告)日：2014-02-11

申请号：US13584104

申请日：2012-08-13

Applicant: Dmitriy Rozenblit

Inventor： Dmitriy Rozenblit

IPC: H03G9/00

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：US08396436B2

公开(公告)日：2013-03-12

申请号：US13311355

申请日：2011-12-05

Applicant: Dmitriy Rozenblit ,  Tirdad Sowlati ,  Dongsoo Daniel Koh ,  Rajasekhar Pullela

Inventor： Dmitriy Rozenblit ,  Tirdad Sowlati ,  Dongsoo Daniel Koh ,  Rajasekhar Pullela

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H03G3/3047 ,  H03G3/3042 ,  H04B17/21 ,  H04B2001/0416 ,  H04W52/06

Abstract: A system for calibrating a closed power control loop includes an adder configured to inject a test signal into an adjustable element, a first peak detector configured to determine an amplitude of the injected test signal, a second peak detector configured to determine an amplitude of a return test signal, a comparator configured to determine the difference between the injected test signal and the return test signal, and a calibration engine configured to adjust the adjustable element so that the return test signal is offset from the injected test signal by a predetermined amount.

Abstract translation: 用于校准闭合功率控制回路的系统包括被配置为将测试信号注入到可调元件中的加法器，被配置为确定注入的测试信号的幅度的第一峰值检测器，被配置为确定返回幅度的第二峰值检测器 测试信号，比较器，被配置为确定注入的测试信号与返回测试信号之间的差异;以及校准引擎，被配置为调整可调节元件，使得返回测试信号偏离注入的测试信号预定量。

公开(公告)号：US20120170624A1

公开(公告)日：2012-07-05

申请号：US13310434

申请日：2011-12-02

Applicant: Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

Inventor： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

IPC: H04W52/20 ,  H04B1/40 ,  H04L25/49

CPC classification number: H04L1/0033 ,  H03F1/0211 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/465 ,  H03G3/3042

Abstract: A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.

Abstract translation: 发射机通过修改可变增益放大器的控制输入来调整发射功率电平。 功率放大器控制系统包括信封提取器，误差提取器和前馈乘法器。 信封提取器接收数据信号输入并计算组合信号的包络。 误差提取器产生作为组合信号和功率放大器产生的输出功率的函数的误差信号。 前馈乘法器产生响应于反馈路径中的增益的函数的修改的误差信号。 还公开了一种用于控制功率电平的相应方法。 在一些实施例中，具有功率控制环路的发射链用于调整在可变增益放大器的输入处施加的发射信号功率。 还包括用于调整发射信号功率电平的相应方法。

公开(公告)号：US08019293B2

公开(公告)日：2011-09-13

申请号：US12044203

申请日：2008-03-07

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 an amplitude modulation power control loop 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 controls a switch that connects the DC-DC converter to a battery in response to a bypass event. The controller bypasses the DC-DC-converter when a transmitter is not enabled. The DC-DC converter is enabled prior to a transmission burst. A target voltage is determined from a series of detected peak voltages from the output of the regulator. The controller commands the DC-DC converter to transition to the target voltage until the end of a transmission burst.

Abstract translation: 控制器使DC-DC转换器在移动手持机的幅度调制功率控制环路中集成。 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。 事件传感器控制开关，以响应旁路事件将DC-DC转换器连接到电池。 当变送器未使能时，控制器将旁路DC-DC转换器。 DC-DC转换器在传输突发之前被使能。 目标电压根据来自调节器的输出的一系列检测到的峰值电压确定。 控制器命令DC-DC转换器转换到目标电压，直到传输突发结束。