专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20060270366A1 Dual voltage regulator for a supply voltage controlled power amplifier in a closed power control loop 有权
公开(公告)号：US20060270366A1
公开(公告)日：2006-11-30
申请号：US11137197
申请日：2005-05-24
申请人： Dmitriy Rozenblit , Tirdad Sowlati
发明人： Dmitriy Rozenblit , Tirdad Sowlati
IPC分类号： H04B1/04 , H01Q11/12
CPC分类号： H03F1/0233 , H03F1/02 , H03F1/0205 , H03F3/24 , H03F2200/207 , H03F2200/504 , H04B2001/045
摘要： 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.

42. 发明授权

US08768273B2 Systems and methods for power sensing and antenna tuning 有权
标题翻译：功率感应和天线调谐的系统和方法
公开(公告)号：US08768273B2
公开(公告)日：2014-07-01
申请号：US13328518
申请日：2011-12-16
申请人： Dmitriy Rozenblit , Masoud Kahrizi
发明人： Dmitriy Rozenblit , Masoud Kahrizi
IPC分类号： H04B1/04
CPC分类号： H04W52/52 , H04B17/101 , H04B17/102 , H04B17/103
摘要： Systems and methods are provided for detecting forward power sent to an antenna and reflected power reflected back from the antenna. Embodiments of the present invention provide systems and methods for measuring forward and reflected power and controlling the amount of power supplied to the antenna responsive to these measurements. Embodiments of the present invention enable the power sent to the antenna to be dynamically altered when antenna impendence changes (e.g., when the antenna gets too close to another object).
摘要翻译：提供了用于检测发送到天线的正向功率和从天线反射回的反射功率的系统和方法。本发明的实施例提供了用于测量前向和反射功率并根据这些测量来控制提供给天线的功率量的系统和方法。当天线阻抗改变时（例如，当天线太靠近另一个物体时），本发明的实施例使能发送到天线的功率被动态地改变。

43. 发明申请

US20120064953A1 CONTROLLER AND METHOD FOR USING A DC-DC CONVERTER IN A MOBILE HANDSET 有权
标题翻译：在移动手机中使用DC-DC转换器的控制器和方法
公开(公告)号：US20120064953A1
公开(公告)日：2012-03-15
申请号：US13230070
申请日：2011-09-12
申请人： Elias Dagher , Kevin Juan , Man H. Ku , Dmitriy Rozenblit
发明人： Elias Dagher , Kevin Juan , Man H. Ku , Dmitriy Rozenblit
IPC分类号： H04W88/02 , H03F1/02 , H04B1/38
CPC分类号： H04W52/52
摘要： 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.
摘要翻译：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。

44. 发明授权

US07920836B2 System and method for saturation detection, correction and recovery in a polar transmitter 有权
标题翻译：用于极性发射机饱和检测，校正和恢复的系统和方法
公开(公告)号：US07920836B2
公开(公告)日：2011-04-05
申请号：US12715705
申请日：2010-03-02
申请人： Dmitriy Rozenblit , Tirdad Sowlati , Darioush Agahi
发明人： Dmitriy Rozenblit , Tirdad Sowlati , Darioush Agahi
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/32 , H03F1/34 , H03F3/189 , H03F3/24 , H03F2200/438 , H03G3/3047 , H04B2001/0433
摘要： 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.
摘要翻译：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。

45. 发明授权

US07515880B2 Variable gain frequency multiplier 失效
标题翻译：可变增益倍频器
公开(公告)号：US07515880B2
公开(公告)日：2009-04-07
申请号：US11348001
申请日：2006-02-06
申请人： Dmitriy Rozenblit , Rajasekhar Pullela , Tirdad Sowlati , Shahrzad Tadjpour
发明人： Dmitriy Rozenblit , Rajasekhar Pullela , Tirdad Sowlati , Shahrzad Tadjpour
IPC分类号： H04B1/38
CPC分类号： H03B19/14 , H03G3/3047 , H03L7/081 , H03L7/087 , H03L7/0992 , H03L7/1978 , H03L7/23
摘要： 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.
摘要翻译：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。

46. 发明授权

US07398073B2 Low noise mixer 有权
标题翻译：低噪音混音器
公开(公告)号：US07398073B2
公开(公告)日：2008-07-08
申请号：US11220030
申请日：2005-09-06
申请人： Rajasekhar Pullela , Tirdad Sowlati , Dmitriy Rozenblit
发明人： Rajasekhar Pullela , Tirdad Sowlati , Dmitriy Rozenblit
IPC分类号： H04B1/26
CPC分类号： H04B1/28 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/165 , H03D2200/0019 , H03D2200/0084
摘要： 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.
摘要翻译：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。

47. 发明授权

US08874051B2 Systems and methods for power control in a multiple standard mobile transmitter 有权
标题翻译：多标准移动发射机功率控制系统和方法
公开(公告)号：US08874051B2
公开(公告)日：2014-10-28
申请号：US13310434
申请日：2011-12-02
申请人： Dmitriy Rozenblit , Masoud Kahrizi , Jaleh Komaili , Rajasekhar Pullela , Shahrzad Tadjpour
发明人： Dmitriy Rozenblit , Masoud Kahrizi , Jaleh Komaili , Rajasekhar Pullela , Shahrzad Tadjpour
IPC分类号： H04B1/04 , H03G3/30
CPC分类号： H04L1/0033 , H03F1/0211 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/245 , H03F2200/451 , H03F2200/465 , H03G3/3042
摘要： 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.
摘要翻译：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。

48. 发明申请

US20120134401A1 SYSTEM AND METHOD FOR CLOSED LOOP POWER CONTROL CALIBRATION 有权
标题翻译：闭环功率控制校准的系统和方法
公开(公告)号：US20120134401A1
公开(公告)日：2012-05-31
申请号：US13311355
申请日：2011-12-05
申请人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Daniel Koh , Rajasekhar Pullela
发明人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Daniel Koh , Rajasekhar Pullela
IPC分类号： H04B17/00
CPC分类号： H03G3/3047 , H03G3/3042 , H04B17/21 , H04B2001/0416 , H04W52/06
摘要： 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.
摘要翻译：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。

49. 发明授权

US08073410B2 System and method for closed loop power control calibration 有权
标题翻译：闭环功率控制校准的系统和方法
公开(公告)号：US08073410B2
公开(公告)日：2011-12-06
申请号：US11589472
申请日：2006-10-30
申请人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Daniel Koh , Rajasekhar Pullela
发明人： Dmitriy Rozenblit , Tirdad Sowlati , Dongsoo Daniel Koh , Rajasekhar Pullela
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H03G3/3047 , H03G3/3042 , H04B17/21 , H04B2001/0416 , H04W52/06
摘要： 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.
摘要翻译：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节元件中的加法器，被配置为确定所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。

50. 发明授权

US07711327B2 Direct conversion receiver having a subharmonic mixer 失效
标题翻译：具有次谐波混频器的直接转换接收机
公开(公告)号：US07711327B2
公开(公告)日：2010-05-04
申请号：US11369403
申请日：2006-03-07
申请人： Tirdad Sowlati , Rajasekhar Pullela , Dmitriy Rozenblit
发明人： Tirdad Sowlati , Rajasekhar Pullela , Dmitriy Rozenblit
IPC分类号： H04B1/38
CPC分类号： H03B19/14 , H03G3/3047 , H03L7/081 , H03L7/087 , H03L7/0992 , H03L7/1978 , H03L7/23
摘要： A differential radio frequency (RF) receiver includes a fully differential direct conversion receive chain, a subharmonic mixer in the receive chain, the subharmonic mixer configured to receive a differential 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 receive LO signals.
摘要翻译：差分射频（RF）接收机包括全差分直接转换接收链，接收链中的次谐波混频器，被配置为接收差分射频（RF）输入信号和本地振荡器（LO））信号的次谐波混频器，相位移45度的合成器和具有压控振荡器并具有至少一个分频器以产生所需接收LO信号的合成器。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式