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    • 41. 发明申请
    • IMPROVED FREQUENCY CHANGER CIRCUITS
    • 改进的变频器电路
    • WO2008064262A2
    • 2008-05-29
    • PCT/US2007/085296
    • 2007-11-20
    • QUALCOMM INCORPORATEDFILIPOVIC, Daniel, F.KANG, Inyup
    • FILIPOVIC, Daniel, F.KANG, Inyup
    • H04B15/00H04B1/109
    • In accordance with one aspect of the disclosure, apparatus are provided. A filter is provided to receive from an antenna a receive signal of a given type and a low noise amplifier is provided to amplify the received signal. A translator down translates the receive signal carried at a radio frequency to be carried at an intermediate frequency. An I/Q channel separator is provided to separate the receive signal carried at the intermediate frequency into an analog in-phase (I) signal in an I channel and an analog quadrature-phase (Q) in a Q channel. An analog-to-digital (A/D) converter is provided to respectively convert the I signal and the Q signal to digital domain representations of the I signal and the Q signal. An intermodulation (IM) distortion avoider is provided to avoid IM distortion in the receive signal. The IM distortion avoider includes a carrier frequency exchanger to exchange an IM carrier frequency of IM distortion contained in the receive signal with a carrier frequency of the receive signal.
    • 根据本公开的一个方面,提供了一种装置。 提供滤波器以从天线接收给定类型的接收信号,并且提供低噪声放大器来放大接收到的信号。 翻译器将在射频下携带的接收信号转换为中频。 提供I / Q信道分离器以将在中频处承载的接收信号分离成I信道中的模拟同相(I)信号和Q信道中的模拟正交相位(Q)。 提供模数(A / D)转换器以分别将I信号和Q信号转换为I信号和Q信号的数字域表示。 提供互调(IM)失真避免器以避免接收信号中的IM失真。 IM失真避免器包括载波频率交换器,以将接收信号中包含的IM失真的IM载波频率与接收信号的载波频率进行交换。
    • 44. 发明申请
    • POWER COLLAPSE FOR A WIRELESS TERMINAL
    • 无线终端的功率收敛
    • WO2005034546A1
    • 2005-04-14
    • PCT/US2004/028579
    • 2004-09-01
    • QUALCOMM IncorporatedKANG, InyupETHIRAJAN, Karthikeyan
    • KANG, InyupETHIRAJAN, Karthikeyan
    • H04Q7/32
    • H04W52/028Y02D70/122Y02D70/1242Y02D70/144
    • An integrated circuit for a modem processor includes processing units that are partitioned into "always-on" and "collapsible" power domains. An always-on power domain is powered on at all times. A collapsible power domain can be powered off if the processing units in the power domain are not needed. A power control unit within an always-on power domain powers down the collapsible power domains after going into sleep and powers up these domains after waking up from sleep. Tasks for powering down the collapsible power domains may include (1) saving pertinent hardware registers for these power domains, (2) freezing output pins of the IC to minimally disturb external units, (3) clamping input pins of the collapsed power domains, (4) powering down a main oscillator and disabling the oscillator clock, and so on. Complementary tasks are performed for powering up the collapsed power domains.
    • 用于调制解调器处理器的集成电路包括被划分为“永远在线”和“可折叠”电力域的处理单元。 永远在线的电源域始终打开。 如果不需要电源域中的处理单元,则可以关闭可折叠电源域。 永远在线的电源域内的电源控制单元在睡眠后唤醒可折叠的电源域,并在从睡眠中唤醒之后启动这些域。 关闭可折叠电源域的任务可能包括(1)保存这些电源域的相关硬件寄存器,(2)冻结IC的输出引脚以最小限度地干扰外部单元,(3)钳位崩溃的电源域的输入引脚( 4)关闭主振荡器并禁用振荡器时钟,等等。 执行补充任务以加电折叠的电源域。
    • 45. 发明申请
    • DIRECT CURRENT OFFSET CANCELLATION FOR MOBILE STATION MODEMS USING DIRECT CONVERSION
    • 使用直接转换的移动站模式的直接电流消除
    • WO2003088606A2
    • 2003-10-23
    • PCT/US2003/011070
    • 2003-04-09
    • QUALCOMM INCORPORATED
    • HOLENSTEIN, ChristianKANG, InyupSEVERSON, Matthew
    • H04L25/06
    • H04L25/061H04B1/30
    • A system and method for canceling DC offset for Mobile Station Modems having direct conversion architectures. The present invention is a fast acquiring DC offset cancellation block that provides rapid and accurate DC offset estimates and cancellation techniques to support direct conversion architectures. The fast acquiring DC offset cancellation block combines four mechanisms to rapidly acquire and remove a DC offset estimate after power up, temperature changes, receiver frequency changes, and gain setting changes by increasing high pass loop bandwidth and adjusting DC offset levels at baseband. After removing the DC offset in large portions, the high pass loop bandwidth is decreased to fine tune the previous estimate and to remove any small variation in DC offset due to receiver self-mixing products.
    • 一种具有直接转换结构的移动台调制解调器的DC偏移消除系统和方法。 本发明是快速获取DC偏移消除块,其提供快速和准确的DC偏移估计和消除技术以支持直接转换架构。 快速获取DC偏移消除块结合了四种机制,通过增加高通环路带宽和调整基带上的直流偏移电平,快速获取和消除上电,温度变化,接收机频率变化和增益设置变化后的直流偏移估计。 在大部分去除DC偏移之后,降低高通环路带宽以微调先前的估计,并消除由于接收机自混合产物引起的DC偏移的任何小的变化。