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    • 91. 发明申请
    • High linearity, high efficiency power amplifier with DSP assisted linearity optimization
    • 高线性度,高效率功率放大器,具有DSP辅助线性优化
    • US20090124219A1
    • 2009-05-14
    • US12181572
    • 2008-07-29
    • Arya Reza Behzad
    • Arya Reza Behzad
    • H04B17/00
    • H03F3/45179H03F1/02H03F1/0261H03F1/08H03F1/32H03F1/3211H03F3/24H03F3/45188H03F2200/372H04B1/0475H04B2001/045
    • A communications transceiver includes a baseband processor, a receiver section, and a transmitter section that includes a power amplifier. The receiver and transmitter sections communicatively couple to the baseband processor. In a calibration operation, the baseband processor produces a test signal to the transmitter section. Further, the baseband processor causes each of a plurality of power amplifier bias settings to be applied to the power amplifier. For each of the plurality of power amplifier bias settings, the power amplifier produces an amplified test signal, the receiver section couples back a portion of the amplified test signal to the baseband processor, and the baseband processor produces a characterization of the amplified test signal respective. Based upon a plurality of characterizations of the amplified test signal and respective power amplifier bias settings, the baseband processor determines power amplifier bias control settings. The baseband processor then applies the power amplifier bias control settings to the power amplifier.
    • 通信收发器包括基带处理器,接收器部分和包括功率放大器的发射器部分。 接收机和发射机部分通信地耦合到基带处理器。 在校准操作中,基带处理器向发射机部分产生测试信号。 此外,基带处理器使得多个功率放大器偏置设置中的每一个被施加到功率放大器。 对于多个功率放大器偏置设置中的每一个,功率放大器产生放大的测试信号,接收器部分将放大的测试信号的一部分耦合到基带处理器,并且基带处理器产生放大的测试信号的表征 。 基于放大的测试信号和各个功率放大器偏置设置的多个表征,基带处理器确定功率放大器偏置控制设置。 然后,基带处理器将功率放大器偏置控制设置应用于功率放大器。
    • 92. 发明授权
    • Phase locked loop with power distribution
    • 具有配电的锁相环
    • US07340220B2
    • 2008-03-04
    • US11184423
    • 2005-07-19
    • Arya Reza BehzadHung-Ming Ed Chien
    • Arya Reza BehzadHung-Ming Ed Chien
    • H04B1/40
    • H03L7/18H03L7/0802H03L7/0891
    • A phase locked loop includes a detection module, a control conversion module, a controlled oscillation module, a divider module, and a power distribution module. The detection module is operably coupled to produce a difference signal based on a difference between a reference oscillation and a feedback oscillation. The control conversion module is operably coupled to convert the difference signal into a control signal. The controlled oscillation module is operably coupled to produce an output oscillation based on the control signal. The divider module is operably coupled to produce the feedback oscillation based on the output oscillation. The power distribution module is operably coupled to receive a supply voltage and to provide an individual supply voltage to at least one of the detection module, the control conversion module, the controlled oscillation module, and the divider module to optimize at least one of performance and power consumption of the phase locked loop.
    • 锁相环包括检测模块,控制转换模块,受控振荡模块,分频模块和配电模块。 检测模块可操作地耦合以基于参考振荡和反馈振荡之间的差产生差分信号。 控制转换模块可操作地耦合以将差分信号转换成控制信号。 受控振荡模块可操作地耦合以基于控制信号产生输出振荡。 分压器模块可操作地耦合以基于输出振荡产生反馈振荡。 功率分配模块可操作地耦合以接收电源电压并且向检测模块,控制转换模块,受控振荡模块和分频器模块中的至少一个提供单独的电源电压,以优化性能和 锁相环的功耗。
    • 93. 发明申请
    • IC with interpolation to avoid harmonic interference
    • IC具有内插以避免谐波干扰
    • US20080025380A1
    • 2008-01-31
    • US11800208
    • 2007-05-04
    • Arya Reza BehzadMark GonikbergAhmadreza (Raza) Rofougaran
    • Arya Reza BehzadMark GonikbergAhmadreza (Raza) Rofougaran
    • H04L25/00
    • H04B15/02H04B15/06H04B2215/064H04B2215/068H04L27/0014Y02D70/122Y02D70/124
    • An integrated circuit (IC) includes a clock circuit, a processing module, and processing circuitry. The clock circuit is coupled to produce a digital clock signal. The processing module is coupled to determine whether a harmonic component of the digital clock signal having a nominal digital clock rate is within the frequency passband and to provide an indication to the clock circuit to adjust its rate from the nominal digital clock rate to an adjusted digital clock rate when the harmonic component of the digital clock signal is within the frequency passband. The processing circuitry is coupled to process, at the adjusted digital clock rate, the data to produce processed data having a rate corresponding to the nominal digital clock rate and to interpolate, at an interpolation rate, the processed data to produce interpolated processed data having a rate corresponding to the interpolation rate.
    • 集成电路(IC)包括时钟电路,处理模块和处理电路。 时钟电路被耦合以产生数字时钟信号。 处理模块被耦合以确定具有标称数字时钟速率的数字时钟信号的谐波分量是否在频带内,并且向时钟电路提供指示以将其速率从标称数字时钟速率调整到调整数字 数字时钟信号的谐波分量在频带内的时钟频率。 处理电路被耦合以以调整的数字时钟速率处理数据以产生具有对应于标称数字时钟速率的速率的处理数据,并且以内插速率内插处理后的数据以产生经内插处理的数据,其具有 速率对应于插补率。
    • 99. 发明授权
    • Modulation dependent biasing for efficient and high-linearity power amplifiers
    • 用于高效和高线性功率放大器的调制相关偏置
    • US06972629B2
    • 2005-12-06
    • US10799966
    • 2004-03-12
    • Arya Reza Behzad
    • Arya Reza Behzad
    • H03F1/02H03F1/22H03G3/10
    • H03F1/3205H03F1/0261H03F1/22H03F2200/372
    • A power amplifier includes a transconductance stage and a modulation detection and bias determination module, and may include a cascode stage. The modulation detection and bias determination module operably couples to the transconductance stage and to the cascode stage when present and is operable to detect modulation characteristics of an signal operated upon by the transconductance stage. The modulation detection and bias determination module is also operable to controllably bias the transconductance stage and/or the cascode stage when present based upon detected modulation characteristics. The detected modulation characteristics are typically determined based upon a measured signal level, e.g., voltage level, current level, or power level, of the signal operated upon by the transconductance device. For non-constant envelope modulations, the signal level varies over time with the modulation envelope. The operational characteristics of the power amplifier, e.g., biasing condition(s), are therefore varied over time with the variation of the modulation.
    • 功率放大器包括跨导级和调制检测和偏置确定模块,并且可以包括级联级。 调制检测和偏置确定模块在存在时可操作地耦合到跨导级和共源共栅级,并且可操作以检测由跨导级操作的信号的调制特性。 调制检测和偏置确定模块还可操作以基于检测到的调制特性来可控地偏置跨导级和/或共存共栅级。 检测的调制特性通常基于由跨导装置操作的信号的测量信号电平,例如电压电平,电流电平或功率电平来确定。 对于非恒定包络调制,信号电平随时间随调制包络而变化。 因此,功率放大器的操作特性,例如偏置条件,随着时间的推移随着调制的变化而变化。