Synthesizer with lock detector, lock algorithm, extended range VCO, and a simplified dual modulus divider
    1.
    发明授权
    Synthesizer with lock detector, lock algorithm, extended range VCO, and a simplified dual modulus divider 有权
    具有锁定检测器,锁定算法,扩展范围VCO和简化双模式分频器的合成器

    公开(公告)号:US06404289B1

    公开(公告)日:2002-06-11

    申请号:US09747778

    申请日:2000-12-22

    IPC分类号: H03L7095

    摘要: The present invention provides a synthesizer having an efficient lock detect signal generator, an extended range VCO that can operate within any one of a plurality of adjacent characteristic curves defined by a plurality of adjacent regions, and a divide circuit implemented using only a single counter along with a decoder. This allows for a method of operating the synthesizer, methods of establishing or reestablishing a lock condition using the extended range VCO, and a method of designing a plurality of divide circuits which each use the same single counter and each use a different decoder.

    摘要翻译: 本发明提供一种合成器,其具有有效的锁定检测信号发生器,能够在由多个相邻区域限定的多个相邻特性曲线中的任何一个中操作的扩展范围VCO,以及仅使用单个计数器实现的除法电路 与解码器。 这允许操作合成器的方法,使用扩展范围VCO建立或重新建立锁定条件的方法,以及设计多个除法电路的方法,每个除法电路使用相同的单个计数器并且每个使用不同的解码器。

    Synthesizer with lock detector, lock algorithm, extended range VCO, and a simplified dual modulus divider
    2.
    发明授权
    Synthesizer with lock detector, lock algorithm, extended range VCO, and a simplified dual modulus divider 有权
    具有锁定检测器,锁定算法,扩展范围VCO和简化双模式分频器的合成器

    公开(公告)号:US06731176B2

    公开(公告)日:2004-05-04

    申请号:US10099208

    申请日:2002-03-13

    IPC分类号: H03L700

    摘要: The present invention provides a synthesizer having an efficient lock detect signal generator, an extended range VCO that can operate within any one of a plurality of adjacent characteristic curves defined by a plurality of adjacent regions, and a divide circuit implemented using only a single counter along with a decoder. This allows for a method of operating the synthesizer, methods of establishing or reestablishing a lock condition using the extended range VCO, and a method of designing a plurality of divide circuits which each use the same single counter and each use a different decoder.

    摘要翻译: 本发明提供一种合成器,其具有有效的锁定检测信号发生器,能够在由多个相邻区域限定的多个相邻特性曲线中的任何一个中操作的扩展范围VCO,以及仅使用单个计数器实现的除法电路 与解码器。 这允许操作合成器的方法,使用扩展范围VCO建立或重新建立锁定条件的方法,以及设计多个除法电路的方法,每个除法电路使用相同的单个计数器并且每个使用不同的解码器。

    Apparatus for signal power loss reduction in RF communication systems
    4.
    发明授权
    Apparatus for signal power loss reduction in RF communication systems 有权
    RF通信系统信号功率损耗降低的装置

    公开(公告)号:US08532588B1

    公开(公告)日:2013-09-10

    申请号:US11690784

    申请日:2007-03-23

    IPC分类号: H04B1/02

    摘要: Redundancies of power amplifiers (PAs) or low noise amplifiers (LNAs) at the front end of an RF device are used to reduce losses that typically occur at a diversity switch. A signal designator can advantageously be used to select designated signals, which are provided to the PAs for transmitting or provided by the LNAs during receiving.

    摘要翻译: 在RF设备前端的功率放大器(PA)或低噪声放大器(LNA)的冗余被用于减少通常在分集开关处发生的损耗。 信号指示符可以有利地用于选择提供给PA的指定信号,用于在接收期间由LNA发送或提供。

    Method and apparatus for signal power loss reduction in RF communication systems
    5.
    发明授权
    Method and apparatus for signal power loss reduction in RF communication systems 有权
    RF通信系统信号功率损耗降低的方法和装置

    公开(公告)号:US07590390B2

    公开(公告)日:2009-09-15

    申请号:US11624669

    申请日:2007-01-18

    IPC分类号: H04B1/44

    CPC分类号: H04B7/04 Y02D70/444

    摘要: Multiple power amplifiers in an RF front end are coupled to multiple antennas without diversity switching between the PAs and antennas. Diversity switches direct signals to broadcast by a selected antenna to a PA coupled to the selected antenna. Multiple LNAs are similarly coupled to the diverse antennas. Having one PA and LNA set for each antenna removes the need for diversity switching between the PA/LNAs and each antenna improving signal reception. In one embodiment, a single external PA performs broadcast functions and plural on-chip LNAs are used for reception. In another embodiment, phase shifters are coupled to each PA and LNA, which provide beam forming capability for broadcasts, and in phase signal combinations for received signals.

    摘要翻译: RF前端中的多个功率放大器耦合到多个天线,而无需在PA和天线之间进行分集切换。 分集将直接信号通过所选天线广播到耦合到所选天线的PA。 多个LNA类似地耦合到多个天线。 为每个天线设置一个PA和LNA消除了PA / LNA之间的分集切换和每个天线改善信号接收的需要。 在一个实施例中,单个外部PA执行广播功能,并且多个片上LNA被用于接收。 在另一个实施例中,移相器耦合到每个PA和LNA,其提供用于广播的波束形成能力,以及用于接收信号的相位信号组合。

    Method and apparatus for signal power loss reduction in RF communication systems
    6.
    发明授权
    Method and apparatus for signal power loss reduction in RF communication systems 有权
    RF通信系统信号功率损耗降低的方法和装置

    公开(公告)号:US08320847B2

    公开(公告)日:2012-11-27

    申请号:US11559382

    申请日:2006-11-13

    IPC分类号: H04B1/02

    CPC分类号: H04B7/04 Y02D70/444

    摘要: Multiple power amplifiers in an RF front end are coupled to multiple antennas without diversity switching between the PAs and antennas. Diversity switches direct signals to broadcast by a selected antenna to a PA coupled to the selected antenna. Multiple LNAs are similarly coupled to the diverse antennas. Having one PA and LNA set for each antenna removes the need for diversity switching between the PA/LNAs and each antenna improving signal reception. In one embodiment, a single external PA performs broadcast functions and plural on-chip LNAs are used for reception. In another embodiment, phase shifters are coupled to each PA and LNA, which provide beam forming capability for broadcasts, and in phase signal combinations for received signals.

    摘要翻译: RF前端中的多个功率放大器耦合到多个天线,而不需要PA和天线之间的分集切换。 分集将直接信号通过所选天线广播到耦合到所选天线的PA。 多个LNA类似地耦合到多个天线。 为每个天线设置一个PA和LNA消除了PA / LNA之间的分集切换和每个天线改善信号接收的需要。 在一个实施例中,单个外部PA执行广播功能,并且多个片上LNA被用于接收。 在另一个实施例中,移相器耦合到每个PA和LNA,其提供用于广播的波束形成能力,以及用于接收信号的相位信号组合。

    Hybrid Zero-IF Receiver
    8.
    发明申请
    Hybrid Zero-IF Receiver 有权
    混合零中频接收机

    公开(公告)号:US20080181284A1

    公开(公告)日:2008-07-31

    申请号:US12016955

    申请日:2008-01-18

    IPC分类号: H04B1/69

    CPC分类号: H04B1/30

    摘要: An apparatus for processing a Bluetooth signal advantageously mixes down a received RF signal to an IF signal wherein one band-edge of the spectrum of the IF signal may be approximately 0 Hz. In one embodiment, the IF signal may be digitized, decimated and filtered before being processed into a baseband signal. The baseband signal may be processed by a cordic (COordinate Rotation DIgital Computer) processor to transform the baseband signal from rectangular to polar coordinates. A phase signal from the cordic processor may be used to determine transmitted Bluetooth data symbols. The apparatus may advantageously use less area than traditional Bluetooth receivers.

    摘要翻译: 用于处理蓝牙信号的装置有利地将所接收的RF信号与IF信号相混合,其中IF信号的频谱的一个带边可以为大约0Hz。 在一个实施例中,IF信号可以在被处理成基带信号之前被数字化,抽取和滤波。 基带信号可以由Cordic(Coordinate Rotation DIgital Computer)处理器处理,以将基带信号从矩形变换为极坐标。 可以使用来自Cordic处理器的相位信号来确定所发送的蓝牙数据符号。 该装置可以有利地使用比传统蓝牙接收机更少的面积。