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    • 2. 发明申请
    • LO GENERATION WITH DESKEWED INPUT OSCILLATOR SIGNAL AND SINGLE ENDED DYNAMIC DIVIDER FOR DIFFERENTIAL QUADRATURE SIGNALS
    • 具有输入振荡器信号和单端动态分频器的LO生成用于差分三角形信号
    • WO2010057037A3
    • 2011-04-28
    • PCT/US2009064456
    • 2009-11-13
    • QUALCOMM INCPANIKKATH VINOD VGUDEM PRASAD SCICCARELLI STEVEN C
    • PANIKKATH VINOD VGUDEM PRASAD SCICCARELLI STEVEN C
    • H03B19/12H03D7/16
    • H03B19/12G01R13/02H03B27/00H03D7/16
    • Techniques for generating local oscillator (LO) signals are described. In one design, an apparatus may include a deskew circuit and a divider circuit. The deskew circuit may receive a differential input oscillator signal having timing skew and provide a differential output oscillator signal having reduced timing skew. The differential input oscillator signal may include first and second input oscillator signals, and the differential output oscillator signal may include first and second output oscillator signals. In one design, the deskew circuit may include first and second variable delay circuits that receive the first and second input oscillator signals, respectively, and provide the first and second output oscillator signals, respectively. Each output oscillator signal may have an adjustable delay selected to reduce timing skew. The divider circuit may divide the differential output oscillator signal in frequency and provide differential I and Q divided signals, which may be used to generate LO signals.
    • 描述用于产生本地振荡器(LO)信号的技术。 在一种设计中,设备可以包括去歪斜电路和分频器电路。 偏移电路可以接收具有定时偏移的差分输入振荡器信号,并提供具有减小的定时偏移的差分输出振荡器信号。 差分输入振荡器信号可以包括第一和第二输入振荡器信号,并且差分输出振荡器信号可以包括第一和第二输出振荡器信号。 在一种设计中,歪斜电路可以包括分别接收第一和第二输入振荡器信号的第一和第二可变延迟电路,并分别提供第一和第二输出振荡器信号。 每个输出振荡器信号可以具有选择的可调延迟以减少定时偏移。 分频器电路可以分频差分输出振荡器信号,并提供差分I和Q分频信号,可用于产生LO信号。
    • 6. 发明申请
    • DYNAMICALLY PROGRAMMABLE RECEIVER
    • 动态可编程接收器
    • WO2004042937A3
    • 2004-07-29
    • PCT/US0334749
    • 2003-10-30
    • QUALCOMM INC
    • CICCARELLI STEVEN C
    • H04B1/10H03G3/20H04B1/707
    • H04K3/228H04B1/109H04B1/71H04K3/224
    • Disclosed is a novel and improved dynamically programmable linear receiver which provides the required level of system performance with reduced power consumption. In one embodiment, disclosed is a programmable receiver coupled to a jammer detector for detecting the presence of jamming in an RF signal, the jammer detector coupled to a state machine, and the state machine having means for controlling the receiver based on the results of the jammer detector detecting the presence of jamming in the RF signal. The disclosed receiver is capable of detecting the presence of jammers, with a means to adjust the bias current downward if no jammers are present, which improves the receiver's standby time and prolongs battery life.
    • 公开了一种新型和改进的动态可编程线性接收机,其提供所需级别的系统性能并降低功耗。 在一个实施例中,公开了一种耦合到干扰检测器的可编程接收机,用于检测RF信号中干扰的存在,干扰检测器耦合到状态机,并且状态机具有用于基于 干扰检测器检测RF信号中是否存在干扰。 所公开的接收机能够检测到干扰的存在,并且具有如果不存在干扰信号来向下调整偏置电流的装置,这改进了接收机的待机时间并延长了电池寿命。
    • 8. 发明申请
    • AN AMPS RECEIVER SYSTEM USING A ZERO-IF ARCHITECTURE
    • 使用零中立架构的AMPS接收机系统
    • WO2004049580A2
    • 2004-06-10
    • PCT/US0302221
    • 2003-01-24
    • QUALCOMM INC
    • CICCARELLI STEVEN CRAGHUPATHY ARUN
    • H03G3/30H04B1/30H04B
    • H04B1/406H03G3/3068H04B1/0003H04B1/30
    • An AMPS receiver system utilizing a ZIF architecture and processing received forward link signals in the digital domain. The AMPS receiver system includes an antenna (105), a direct converter (110), high dynamic A/D converters (120, 130), low pass filters (140, 150), a phase shifter (160), a digital FM demodulator (180), an accumulator (185) and a controller (190). The direct converter (110) further includes a low noise amplifier (112), a splitter (113), mixers (114, 116) and low pass filters (118, 119). The controller (190) adjusts the gains of the low noise amplifier (112) and the digital VGA (170) based on the average power of the signal outputted by the digital VGA (170).
    • 采用ZIF架构并在数字领域处理接收到的前向链路信号的AMPS接收机系统。 AMPS接收机系统包括天线(105),直接转换器(110),高动态A / D转换器(120,130),低通滤波器(140,150),移相器(160),数字FM解调器 (180),蓄能器(185)和控制器(190)。 直接转换器(110)还包括低噪声放大器(112),分离器(113),混频器(114,116)和低通滤波器(118,119)。 控制器(190)基于由数字VGA(170)输出的信号的平均功率来调节低噪声放大器(112)和数字VGA(170)的增益。