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    • 16. 发明授权
    • Wireless communication unit and linearised transmitter circuit therefor
    • 无线通信单元和线性发射机电路
    • US07353005B2
    • 2008-04-01
    • US10551599
    • 2004-03-11
    • Moshe Ben-AyunGabriela NochamMark Rozental
    • Moshe Ben-AyunGabriela NochamMark Rozental
    • H04B17/00
    • H04L27/368H03F1/3247H03F1/3294H03F1/34H03F2200/153H03F2200/57H04L2027/0016
    • A wireless communication unit (300) comprises a linearised transmitter (325) having a forward path, a power amplifier (324) and a feedback loop, operably coupled to the power amplifier (324) and the forward path. The feedback loop comprises a loop adjustment function (442), and the forward path and feedback loop comprise quadrature circuits. A processor (322) applies a first training signal to a first quadrature circuit loop for routing through the forward path, power amplifier and feedback path to determine at least one first parameter setting of the loop adjustment function (442). The processor (322) also applies a second training signal to a second quadrature circuit loop to determine at least a second parameter setting of the loop adjustment function (442).
    • 无线通信单元(300)包括具有正向路径的线性化发射机(325),功率放大器(324)和反馈回路,可操作地耦合到功率放大器(324)和前向路径。 反馈回路包括回路调整功能(442),并且正向通路和反馈回路包括正交电路。 处理器(322)将第一训练信号施加到第一正交电路回路,用于通过前向路径,功率放大器和反馈路径进行路由,以确定循环调整功能(442)的至少一个第一参数设置。 处理器(322)还将第二训练信号施加到第二正交电路回路以确定循环调整功能的至少第二参数设置(442)。
    • 17. 发明申请
    • Wireless communication unit linearised transmitter circuit and method of linearising therein
    • 无线通信单元线性化发射机电路及其线性化方法
    • US20050123064A1
    • 2005-06-09
    • US10991735
    • 2004-11-18
    • Moshe Ben-AyunOvadia GrossmanMark Rozental
    • Moshe Ben-AyunOvadia GrossmanMark Rozental
    • H03F1/32H04L27/36H04L27/04
    • H03F1/34H03F1/3247H03F1/3294H03F2200/57H04L27/368
    • A wireless communication unit (300) comprises a linearized transmitter (325, 500) having a power amplifier (324), a forward path and a feedback path for feeding back a portion of a signal to be transmitted, wherein the feedback path and forward path form two loops in quadrature. A processor (322) applies one or more training signals to a first quadrature circuit loop and a second quadrature circuit loop and measures a quadrature imbalance between the first and second quadrature circuit loops. In response the processor adjusts at least one parameter setting of a loop adjustment function (442) to balance the quadrature circuit loops. A linearized transmitter integrated circuit and method of training are also described. The measuring and compensating for any loop imbalance between digital ‘I’ and ‘Q’ paths around a feedback path provides improved accuracy and stability in phase and/or amplitude.
    • 无线通信单元(300)包括具有功率放大器(324)的线性化发射器(325,500),用于反馈要发射的信号的一部分的正向路径和反馈路径,其中反馈路径和前向路径 形成正交的两个循环。 处理器(322)将一个或多个训练信号施加到第一正交电路回路和第二正交电路回路,并测量第一和第二正交电路回路之间的正交不平衡。 作为响应,处理器调整环路调整功能(442)的至少一个参数设置以平衡正交电路回路。 还描述了线性化发射机集成电路和训练方法。 在反馈路径周围的数字“I”和“Q”路径之间的任何回路不平衡的测量和补偿提供了相位和/或幅度的改进的精度和稳定性。
    • 18. 发明申请
    • RADIO FREQUENCY RECEIVER, WIRELESS COMMUNICATION UNIT AND METHOD OF OPERATION
    • 无线电频率接收机,无线通信单元及其操作方法
    • US20110076976A1
    • 2011-03-31
    • US12993837
    • 2009-05-21
    • Moshe Ben-AyunOvadia GrossmanMark Rozental
    • Moshe Ben-AyunOvadia GrossmanMark Rozental
    • H04B1/26H04B7/00H04B17/00
    • H04B1/109
    • A wireless communication unit (200) comprises a radio frequency (RF) receiver for receiving an RF signal and providing the received RF signal to an off-channel signal detector (218) and a quadrature down conversion mixer circuit comprising at least one dynamic matching mixer stage (226, 228, 250, 252). The off-channel signal detector (218) is arranged to detect whether an off-channel signal level of the received RF signal exceeds a threshold and, in response to determining that the received off-channel RF signal exceeds the threshold, the off-channel signal detector (218) deactivates the at least one dynamic matching mixer stage. Also described is a semiconductor that comprises a receiver, and a method of operation therefor.
    • 无线通信单元(200)包括射频(RF)接收机,用于接收RF信号并将接收到的RF信号提供给偏离信道信号检测器(218)和正交下变频混频器电路,其包括至少一个动态匹配混频器 阶段(226,228,250,252)。 偏离信道信号检测器(218)被布置成检测所接收的RF信号的偏离信道信号电平是否超过阈值,并且响应于确定接收的离频信道RF信号超过阈值,偏离信道 信号检测器(218)去激活所述至少一个动态匹配混合器级。 还描述了包括接收器的半导体及其操作方法。
    • 20. 发明授权
    • Receiver with automatic gain control that operates with multiple protocols and method thereof
    • 具有自动增益控制的接收机,其具有多种协议及其方法
    • US07227916B2
    • 2007-06-05
    • US10649427
    • 2003-08-26
    • Charles R. RuelkeMoshe Ben-AyunDavid J. GrahamMark Rozental
    • Charles R. RuelkeMoshe Ben-AyunDavid J. GrahamMark Rozental
    • H04L27/08
    • H03G3/3078H03G3/001H03G3/3052
    • An automatic gain control (AGC) method and circuit (10) within a receiver uses a digital state machine (26) to implement the AGC function. independent from interaction with a host processor (36) and for multiple modulation protocols without duplicating circuitry. Modulation protocol and parameters for any of various gain responses are stored in a register (29). Multiple states, each corresponding to a predetermined range of RF input signal strength, are stored in the register. Each state contains parameters that determine a gain control signal for controlling a variable gain amplifier (16). The states are independent and may be selectively disabled to create asymmetric responses. Within any state, an adaptable number of iterations may be set to implement a different update rate or step size after a predetermined number of closed loop gain change iterations has not resulted in a transition to a state that represents a desired output gain.
    • 接收机内的自动增益控制(AGC)方法和电路(10)使用数字状态机(26)实现AGC功能。 独立于与主处理器(36)的交互和不具有复制电路的多调制协议。 任何各种增益响应的调制协议和参数都存储在寄存器(29)中。 每个对应于RF输入信号强度的预定范围的多个状态被存储在寄存器中。 每个状态包含确定用于控制可变增益放大器(16)的增益控制信号的参数。 状态是独立的,并且可以被选择性地禁用以产生不对称响应。 在任何状态下,在预定数量的闭环增益变化迭代尚未导致转换到表示期望的输出增益的状态之后,可设置可适应数量的迭代以实现不同的更新速率或步长。