Broadband input frequency adaptive technique for filter tuning and quadrature generation
    1.
    发明授权
    Broadband input frequency adaptive technique for filter tuning and quadrature generation 有权
    用于滤波器调谐和正交生成的宽带输入频率自适应技术

    公开(公告)号:US08554267B2

    公开(公告)日:2013-10-08

    申请号:US12647476

    申请日:2009-12-26

    申请人: Raul Salvi

    发明人: Raul Salvi

    IPC分类号: H04B1/10 H04B1/18 H04B1/16

    CPC分类号: H03H11/16

    摘要: A method for tuning a filter is provided. The amplitude of a first signal (I1) is compared with the amplitude of a comparison signal. The first signal is generated with a first filter, which receives a first input signal, and there is a phase difference between the first signal (I1) and the comparison signal. A tuning signal is then generated based on differences between the amplitudes of the first signal (I1) and the comparison signal. The tuning signal compensates for any phase and/or amplitude offset in the first signal (I1).

    摘要翻译: 提供了一种用于调整过滤器的方法。 将第一信号(I1)的幅度与比较信号的振幅进行比较。 第一信号由接收第一输入信号的第一滤波器产生,并且在第一信号(I1)和比较信号之间存在相位差。 然后基于第一信号(I1)和比较信号的振幅之间的差异产生调谐信号。 调谐信号补偿第一信号(I1)中的任何相位和/或幅度偏移。

    METHOD AND APPARATUS FOR CORRECTING PHASE OFFSET ERRORS IN A COMMUNICATION DEVICE
    2.
    发明申请
    METHOD AND APPARATUS FOR CORRECTING PHASE OFFSET ERRORS IN A COMMUNICATION DEVICE 有权
    用于校正通信设备中的相位偏移误差的方法和装置

    公开(公告)号:US20120074996A1

    公开(公告)日:2012-03-29

    申请号:US12893266

    申请日:2010-09-29

    IPC分类号: H03L7/06

    摘要: A frequency synthesizer that utilizes locked loop circuitry, for example delay locked loop and/or phase locked loop circuits is provided with a means for minimizing static phase/delay errors. An auto-tuning circuit and technique provide a measurement of static phase error by integrating the static phase error in the DLL/PLL circuit. A correction value is determined and applied as a current at the charge pump or as a time/phase offset at the phase detector to minimize static phase error. During normal operation the DLL/PLL is operated with the correction value resulting in substantially reduced spur levels and/or improved settling time.

    摘要翻译: 使用锁相环电路(例如延迟锁定环路和/或锁相环路电路)的频率合成器具有用于最小化静态相位/延迟误差的装置。 自动调谐电路和技术通过在DLL / PLL电路中积分静态相位误差来提供静态相位误差的测量。 校正值被确定并应用于电荷泵处的电流或作为相位检测器处的​​时间/相位偏移,以使静态相位误差最小化。 在正常操作期间,使用校正值来操作DLL / PLL,从而导致显着降低的刺激水平和/或改善的建立时间。

    Signal generation power management control system for portable communications device and method of using same
    3.
    发明申请
    Signal generation power management control system for portable communications device and method of using same 有权
    用于便携式通信设备的信号发生电力管理控制系统及其使用方法

    公开(公告)号:US20050148300A1

    公开(公告)日:2005-07-07

    申请号:US10748735

    申请日:2003-12-30

    CPC分类号: H03G3/30 G11B20/10

    摘要: A signal generation power management control system (100) for use in a portable communications device includes a digital signal processor (DSP) (101) for processing a digital source input and providing a digital processed bit stream A digital-to-analog converter (DAC) (103) is used for converting the digital processed bit stream to provide an analog signal. A power management controller (115) within the DSP (101) is then used for interpreting control parameters of signal processing components used within the portable communications device and dynamically adjusting the bias current of these components based on minimal signal requirements of the analog signal.

    摘要翻译: 一种用于便携式通信设备的信号发生功率管理控制系统(100)包括用于处理数字源输入并提供数字处理比特流A的数字信号处理器(DSP)(101)数模转换器 )(103)用于转换数字处理比特流以提供模拟信号。 然后,DSP(101)内的电源管理控制器(115)用于解释在便携式通信设备内使用的信号处理组件的控制参数,并且基于模拟信号的最小信号要求来动态调整这些组件的偏置电流。

    Oscillator circuit having a differential configuration and method of
forming same
    5.
    发明授权
    Oscillator circuit having a differential configuration and method of forming same 失效
    具有差分配置的振荡器电路及其形成方法

    公开(公告)号:US6002303A

    公开(公告)日:1999-12-14

    申请号:US27270

    申请日:1998-02-20

    IPC分类号: H03B5/12 H03L7/00 H03B5/00

    摘要: An oscillator circuit (100) provides improved noise immunity by utilizing a differential common base configuration. The oscillator includes a differential transistor pair (102, 104) having common bases (110) coupled through an AC ground (108) and emitters coupled through a differential common mode point (120). First and second resonant tank circuits are each referenced to the differential common mode point (120) for generating a differential output (OUT, OUTX).

    摘要翻译: 振荡器电路(100)通过利用差分公共基极配置来提供改进的抗噪声能力。 振荡器包括具有通过AC接地(108)耦合的公共基极(110)和通过差分共模点(120)耦合的发射极的差分晶体管对(102,104)。 第一和第二谐振回路各自以用于产生差分输出(OUT,OUTX)的差分共模点(120)为基准。

    Selective call receivers with integer divide synthesizers for achieving
fast-lock time
    7.
    发明授权
    Selective call receivers with integer divide synthesizers for achieving fast-lock time 失效
    具有整数除法合成器的选择性呼叫接收器,实现快速锁定时间

    公开(公告)号:US5745843A

    公开(公告)日:1998-04-28

    申请号:US511159

    申请日:1995-08-04

    IPC分类号: H03L7/23 H04B1/50

    CPC分类号: H03L7/23

    摘要: A selective call receiver (100) for receiving and transmitting paging signals has a transceiver (104) having an integer divide synthesizer (105) for achieving a fast lock time. The transceiver (104) has a reference oscillator (202) that generates a reference signal in a direct injection path and a modulator (206) coupled in the direct injection path modulates the reference signal to generate a modulated reference signal. A phase locked offset loop (220) coupled to the direct injection path generates a low frequency signal derived from the reference signal, a multiplier (210) coupled to the modulator (206) multiplies the modulated reference signal, and a mixer (214) coupled to the multiplier (210) receives the modulated reference signal in the direct injection path and an output signal from the phase locked offset loop (220) to generate a first local oscillator output signal and a modulated transmit carrier.

    摘要翻译: 用于接收和发送寻呼信号的选呼接收机(100)具有收发机(104),其具有用于实现快速锁定时间的整数除法合成器(105)。 收发器(104)具有在直接注入路径中产生参考信号的参考振荡器(202),并且耦合在直接注入路径中的调制器(206)调制参考信号以产生经调制的参考信号。 耦合到直接注入路径的锁相偏移环路(220)产生从参考信号导出的低频信号,耦合到调制器(206)的乘法器(210)将经调制的参考信号相乘,并且耦合 乘法器(210)接收直接喷射路径中的调制参考信号和来自锁相偏移环路(220)的输出信号,以产生第一本地振荡器输出信号和调制发射载波。

    Method and apparatus for improving signal reception in a receiver
    8.
    发明授权
    Method and apparatus for improving signal reception in a receiver 有权
    一种用于改善接收机中的信号接收的方法和装置

    公开(公告)号:US07684516B2

    公开(公告)日:2010-03-23

    申请号:US11380892

    申请日:2006-04-28

    IPC分类号: H03K9/00

    CPC分类号: H04L25/062

    摘要: A method and apparatus for improving signal reception in a receiver (100) by performing all-channel and/or on-channel estimations on a received signal so as to predict future RF environments. The prediction is achieved through the use of one or more detector systems (122, 124) positioned to sample and detect predetermined signal metrics of the received signal (103) prior to analog-to-digital conversion (112) and subsequent post-processing (114). Future estimations of the channel condition are thus generated prior to the arrival of the actual samples (115) at a controller section (116). The detectors (122, 124) provide triggers (123, 125) to the controller (116) so that active stages (130) within the receiver (100) can be adjusted and scaled as needed via a serial port interface (SPI) (126) based on signal conditions.

    摘要翻译: 一种用于通过对接收到的信号进行全通道和/或通道上估计来改善接收器(100)中的信号接收以预测将来的RF环境的方法和装置。 通过使用一个或多个检测器系统(122,124)来实现预测,所述检测器系统定位成在模数转换(112)和随后的后处理(112)之后采样和检测接收信号(103)的预定信号度量, 114)。 因此,在实际样本(115)到达控制器部分(116)之前生成信道条件的未来估计。 检测器(122,124)向控制器(116)提供触发(123,125),使得可以根据需要通过串行端口接口(SPI)(126)来调整和缩放接收器(100)内的有源级(130) )基于信号条件。

    METHOD AND APPARATUS FOR IMPROVING SIGNAL RECEPTION IN A RECEIVER
    9.
    发明申请
    METHOD AND APPARATUS FOR IMPROVING SIGNAL RECEPTION IN A RECEIVER 有权
    改善接收器信号接收的方法和装置

    公开(公告)号:US20070253511A1

    公开(公告)日:2007-11-01

    申请号:US11380892

    申请日:2006-04-28

    IPC分类号: H04L27/00

    CPC分类号: H04L25/062

    摘要: A method and apparatus for improving signal reception in a receiver (100) by performing all-channel and/or on-channel estimations on a received signal so as to predict future RF environments. The prediction is achieved through the use of one or more detector systems (122, 124) positioned to sample and detect predetermined signal metrics of the received signal (103) prior to analog-to-digital conversion (112) and subsequent post-processing (114). Future estimations of the channel condition are thus generated prior to the arrival of the actual samples (115) at a controller section (116). The detectors (122, 124) provide triggers (123, 125) to the controller (116) so that active stages (130) within the receiver (100) can be adjusted and scaled as needed via a serial port interface (SPI) (126) based on signal conditions.

    摘要翻译: 一种用于通过对接收到的信号进行全通道和/或通道上估计来改善接收器(100)中的信号接收以预测将来的RF环境的方法和装置。 通过使用一个或多个检测器系统(122,124)来实现预测,所述检测器系统定位成在模数转换(112)和随后的后处理(112)之后采样和检测接收信号(103)的预定信号度量, 114)。 因此,在实际样本(115)到达控制器部分(116)之前生成信道条件的未来估计。 检测器(122,124)向控制器(116)提供触发(123,125),使得可以根据需要通过串行端口接口(SPI)(126)来调整和缩放接收器(100)内的有源级(130) )基于信号条件。

    Method and apparatus for reducing phase imbalance in radio frequency signals
    10.
    发明申请
    Method and apparatus for reducing phase imbalance in radio frequency signals 审中-公开
    减少射频信号相位不平衡的方法和装置

    公开(公告)号:US20070135064A1

    公开(公告)日:2007-06-14

    申请号:US11298070

    申请日:2005-12-09

    IPC分类号: H04B1/04

    CPC分类号: H04B1/30

    摘要: Systems and method for reducing phase imbalance in radio frequency (RF) signals are disclosed. The phase imbalance in an RF signal may be due to phase imbalance in the local oscillator used for upconversion in a transmitter, and downconversion in a receiver. The RF signal is converted to a digital signal. The phase imbalance in the digital signal is measured by using a digital signal processor. The digital signal processor generates a compensation signal in response to the measurement of the phase imbalance. The compensation signal is used to generate a tuning signal to tune the local oscillator used for the upconversion or downconversion, thereby reducing the phase imbalance.

    摘要翻译: 公开了用于减少射频(RF)信号的相位不平衡的系统和方法。 RF信号中的相位不平衡可能是由于在发射机中用于上变频的本地振荡器的相位不平衡以及接收机中的下变频引起的。 RF信号被转换成数字信号。 通过使用数字信号处理器来测量数字信号中的相位不平衡。 数字信号处理器响应于相位不平衡的测量而产生补偿信号。 补偿信号用于产生调谐信号以调谐用于上变频或下变频的本地振荡器,从而减少相位不平衡。