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    PARTITIONING OF RADIO-FREQUENCY APPARATUS
    2.
    发明申请
    PARTITIONING OF RADIO-FREQUENCY APPARATUS 有权
    无线电频率设备的分配

    公开(公告)号：US20070054629A1

    公开(公告)日：2007-03-08

    申请号：US10730404

    申请日：2003-12-08

    申请人： James Maligeorgos ,  Augusto Marques ,  Lysander Lim ,  G. Tuttle ,  Aslamali Rafi ,  Tod Paulus ,  Gregory Uehara ,  Jeffrey Scott ,  Richard Behrens ,  Donald Kerth ,  G. Vishakhadatta ,  Vishnu Srinivasan ,  Caiyi Wang

    发明人： James Maligeorgos ,  Augusto Marques ,  Lysander Lim ,  G. Tuttle ,  Aslamali Rafi ,  Tod Paulus ,  Gregory Uehara ,  Jeffrey Scott ,  Richard Behrens ,  Donald Kerth ,  G. Vishakhadatta ,  Vishnu Srinivasan ,  Caiyi Wang

    IPC分类号： H04B1/38

    CPC分类号： H04B1/30 ,  H03J2200/10 ,  H04L27/0002

    摘要： Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry. Automatic frequency control (AFC) circuitry may be integrated with other components of RF circuitry and may generate frequency control signals for the frequency modification circuitry based on, for example, a signal received from a temperature sensor. Digital-to-analog converter (DAC) circuitry may be integrated with other components of RF circuitry to enable all-digital frequency control communications from baseband processor circuitry to RF circuitry.

    摘要翻译： 包括生成具有可变频率的参考信号的晶体振荡器电路的收发器电路和频率修改电路的射频（RF）设备的组件可以以各种方式被划分，例如作为一个或多个单独的集成电路。 频率修改电路可以被实现为包括数字控制的晶体振荡器（“DCXO”）电路和晶体的晶体振荡器电路的一部分。 频率修改电路可以包括至少一个可变电容器件，并且可以用于产生具有可调频率的参考信号。 可调参考信号可以被提供给RF装置的其他部件，和/或RF装置可以被配置为向基带处理器电路提供可调参考信号。 自动频率控制（AFC）电路可以与RF电路的其它组件集成，并且可以基于例如从温度传感器接收的信号来生成用于频率修改电路的频率控制信号。 数模转换器（DAC）电路可以与RF电路的其他部件集成，以实现从基带处理器电路到RF电路的全数字频率控制通信。

    Peak detector
    4.
    发明申请
    Peak detector 有权
    峰值检测器

    公开(公告)号：US20070004359A1

    公开(公告)日：2007-01-04

    申请号：US11172477

    申请日：2005-06-30

    申请人： Vishnu Srinivasan ,  G. Tuttle

    发明人： Vishnu Srinivasan ,  G. Tuttle

    IPC分类号： H04B1/06

    CPC分类号： H03G3/3068

    摘要： A receiver includes a gain stage, a peak detector and a processor. The gain stage provides an output signal, and the peak detector provides a binary indication of whether the output signal has reached a predetermined threshold. The processor controls the gain stage in response to the binary indication.

    摘要翻译： 接收机包括增益级，峰值检测器和处理器。 增益级提供输出信号，峰值检测器提供输出信号是否达到预定阈值的二进制指示。 处理器响应于二进制指示来控制增益级。

    Method and apparatus for enhancing signal quality within a wireless receiver
    5.
    发明申请
    Method and apparatus for enhancing signal quality within a wireless receiver 有权
    一种用于增强无线接收机内的信号质量的方法和装置

    公开(公告)号：US20050143040A1

    公开(公告)日：2005-06-30

    申请号：US10749012

    申请日：2003-12-30

    申请人： Donald Kerth ,  G. Tuttle

    发明人： Donald Kerth ,  G. Tuttle

    IPC分类号： H04B1/28 ,  H04B1/10

    CPC分类号： H04B1/0007 ,  H04B1/28

    摘要： A method and apparatus for enhancing signal quality within a wireless receiver are disclosed. An image of a desired signal is down-converted to a baseband signal by a digital down converter. The energy of the baseband signal is subsequently determined. If the energy of the baseband signal is equal to or greater than a predetermined threshold, then the IF is swapped for any incoming signals. If the energy of the baseband signal is less than the predetermined threshold, then the IF is maintained for any incoming signals.

    摘要翻译： 公开了一种用于增强无线接收机内的信号质量的方法和装置。 所需信号的图像由数字下变频器下变频为基带信号。 随后确定基带信号的能量。 如果基带信号的能量等于或大于预定阈值，则IF被交换用于任何输入信号。 如果基带信号的能量小于预定阈值，则对于任何输入信号都保持IF。

    Dynamic selection of local oscillator signal injection for image rejection in integrated receivers
    7.
    发明申请
    Dynamic selection of local oscillator signal injection for image rejection in integrated receivers 有权
    动态选择本地振荡器信号注入用于集成接收机中的图像抑制

    公开(公告)号：US20060003722A1

    公开(公告)日：2006-01-05

    申请号：US10881579

    申请日：2004-06-30

    申请人： G. Tuttle ,  Dan Kasha ,  Donald Kerth

    发明人： G. Tuttle ,  Dan Kasha ,  Donald Kerth

    IPC分类号： H04B1/18 ,  H04B1/26 ,  H04B1/10

    CPC分类号： H04B1/10 ,  H03J1/0041 ,  H04B1/28

    摘要： A system and method are disclosed for dynamically selecting high-side injection or low-side injection of local oscillator mixing signals based upon an assessment of signal power within the input signal spectrum that could cause unwanted images in the processed signal. This image rejection assessment provides an advantageous basis upon which to make dynamic high-side versus low-side injection determinations.

    摘要翻译： 公开了一种系统和方法，用于基于对输入信号频谱内的信号功率的评估来动态地选择本地振荡器混合信号的高侧注入或低侧注入，这可能导致处理信号中的不需要的图像。 这种镜像抑制评估提供了进行动态高侧对低侧注射测定的有利基础。

    Integrated low-IF terrestrial audio broadcast receiver and associated method
    8.
    发明申请
    Integrated low-IF terrestrial audio broadcast receiver and associated method 有权
    综合低频IF地面音频广播接收机及相关方法

    公开(公告)号：US20080009261A1

    公开(公告)日：2008-01-10

    申请号：US11900997

    申请日：2007-09-14

    申请人： G. Tuttle ,  Dan Kasha

    发明人： G. Tuttle ,  Dan Kasha

    IPC分类号： H04B1/26

    CPC分类号： H04B1/18 ,  H04B1/30

    摘要： An integrated low-IF (low intermediate frequency) terrestrial broadcast receiver and associated method are disclosed that provide an advantageous and cost-efficient solution. The integrated receiver includes a mixer, local oscillator generation circuitry, low-IF conversion circuitry, and DSP circuitry. And the integrated receiver is particularly suited for small, portable devices and the reception of terrestrial audio broadcasts, such as FM and AM terrestrial audio broadcast, in such portable devices.

    摘要翻译： 公开了一种集成的低中频（低中频）地面广播接收机和相关方法，其提供了有利且具有成本效益的解决方案。 集成接收器包括混频器，本地振荡器产生电路，低IF转换电路和DSP电路。 并且集成接收机特别适用于小型便携式设备以及在这种便携式设备中接收地面音频广播，诸如FM和AM地面音频广播。

    Ratiometric clock systems for integrated receivers and associated methods
    9.
    发明申请
    Ratiometric clock systems for integrated receivers and associated methods 有权
    用于集成接收机和相关方法的比例时钟系统

    公开(公告)号：US20060003728A1

    公开(公告)日：2006-01-05

    申请号：US10880483

    申请日：2004-06-30

    申请人： G. Tuttle ,  David Welland ,  Scott Willingham

    发明人： G. Tuttle ,  David Welland ,  Scott Willingham

    IPC分类号： H04B1/28

    CPC分类号： H04B1/30

    摘要： A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circuitry. The generation circuitry generates an oscillation signal that is passed through a first divider to generate mixing signals for the mixer and that is passed through a second divider to generate a digital clock signal that is utilized by the DSP circuitry. This digital clock signal can be utilized by integrated analog-to-digital conversion circuitry, as well.

    摘要翻译： 公开了一种用于集成接收机和相关方法的比例时钟系统，其提供用于将数字信号处理（DSP）电路组合在与混频器和本地振荡器（LO）生成电路相同的集成电路上的有利解决方案。 产生电路产生振荡信号，该信号通过第一分频器以产生用于混频器的混频信号，并通过第二分频器产生由DSP电路利用的数字时钟信号。 该数字时钟信号也可以由集成的模数转换电路使用。

    Broadcast AM receiver, FM receiver and/or FM transmitter with integrated stereo audio codec, headphone drivers and/or speaker drivers
    10.
    发明申请
    Broadcast AM receiver, FM receiver and/or FM transmitter with integrated stereo audio codec, headphone drivers and/or speaker drivers 有权
    具有集成立体声音频编解码器，耳机驱动器和/或扬声器驱动器的广播AM接收器，FM接收器和/或FM发射器

    公开(公告)号：US20080051918A1

    公开(公告)日：2008-02-28

    申请号：US11824596

    申请日：2007-06-29

    申请人： G. Tuttle ,  Wade Gillham ,  Dan Kasha

    发明人： G. Tuttle ,  Wade Gillham ,  Dan Kasha

    IPC分类号： G06F17/00

    CPC分类号： H04B1/1646 ,  H04B1/034

    摘要： An apparatus includes processor and a control interface. The processor is adapted to in a first mode of operation, operate as part of one of a wireless receiver and a wireless transmitter and in a second mode of operation. The processor also processes a first audio band signal to generate a second audio band signal. The control interface selects one of the first and second modes of operation.

    摘要翻译： 一种装置包括处理器和控制接口。 处理器适于处于第一操作模式，作为无线接收机和无线发射机之一的一部分操作，并且处于第二操作模式。 处理器还处理第一音频信号以产生第二音频信号。 控制界面选择第一和第二操作模式之一。