ADAPTIVE AGC IN A WIRELESS NETWORK RECEIVER
    2.
    发明申请
    ADAPTIVE AGC IN A WIRELESS NETWORK RECEIVER 有权
    无线网络接收器中的自适应AGC

    公开(公告)号:US20070129034A1

    公开(公告)日:2007-06-07

    申请号:US11672132

    申请日:2007-02-07

    IPC分类号: H04B17/02

    CPC分类号: H04W52/52 H03G3/3068

    摘要: An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.

    摘要翻译: 存储用于实现方法的指令的装置,载体介质以及用于控制无线电接收机的增益的方法,用于在无线网络中接收信息分组。 接收机连接到天线子系统,并且具有包括多个部分的接收信号路径,所述多个部分包括耦合到天线子系统的第一部分和下一部分。 每个部分都有一个可调节的增益,能够提供其输出信号强度的测量。 该方法包括等待分组指示的开始,提供在第一部分和下一部分的输出处的信号强度的测量,以及使用所提供的测量信号强度来调整第一和下一个部分的增益。 在一个实施例中,接收信号路径包括滤波器,所提供的第一部分的测量在滤波器之前,并且所提供的第二部分的测量值在滤波器之后。 增益调整根据第一部分输出端的测量信号强度设置第一部分的增益,并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益 第一部分的输出。 在一个实施例中,增益调整o在连续AGC阶段中执行,一个阶段设置一个或多个部分的增益。

    AUTOMATIC GAIN CONTROL AND LOW POWER START-OF-PACKET DETECTION FOR A WIRELESS LAN RECEIVER
    3.
    发明申请
    AUTOMATIC GAIN CONTROL AND LOW POWER START-OF-PACKET DETECTION FOR A WIRELESS LAN RECEIVER 有权
    无线局域网接收机的自动增益控制和低功耗起动分组检测

    公开(公告)号:US20070066259A1

    公开(公告)日:2007-03-22

    申请号:US11557728

    申请日:2006-11-08

    IPC分类号: H04B17/00 H04B7/00

    CPC分类号: H03G3/3078

    摘要: A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.

    摘要翻译: 一种用于突发操作的数字AGC系统,特别适用于在无线局域网中接收分组。 一个实施例包括在宽动态范围内提供称为接收信号强度指示(RSSI)的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。 分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

    Wireless computer network including a mobile appliance containing a single chip transceiver
    4.
    发明授权
    Wireless computer network including a mobile appliance containing a single chip transceiver 有权
    无线计算机网络包括包含单芯片收发器的移动设备

    公开(公告)号:US07061855B2

    公开(公告)日:2006-06-13

    申请号:US11168011

    申请日:2005-06-27

    IPC分类号: H04J11/00 H04Q7/24 H04B1/40

    CPC分类号: H04B1/28 H04B1/405

    摘要: A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

    摘要翻译: 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型,并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行,或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试,芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关,RF功率放大器和低噪声接收放大器,以提高工作范围。

    Wireless computer network including a mobile appliance containing a single chip transceiver
    5.
    发明授权
    Wireless computer network including a mobile appliance containing a single chip transceiver 有权
    无线计算机网络包括包含单芯片收发器的移动设备

    公开(公告)号:US06944121B1

    公开(公告)日:2005-09-13

    申请号:US09877402

    申请日:2001-06-08

    IPC分类号: H04J11/00 H04L12/28

    CPC分类号: H04B1/28 H04B1/405

    摘要: A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

    摘要翻译: 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型,并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行,或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试,芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关,RF功率放大器和低噪声接收放大器,以提高工作范围。

    Wireless computer network including a mobile appliance containing a single chip transceiver
    6.
    发明授权
    Wireless computer network including a mobile appliance containing a single chip transceiver 有权
    无线计算机网络包括包含单芯片收发器的移动设备

    公开(公告)号:US07164651B2

    公开(公告)日:2007-01-16

    申请号:US11380165

    申请日:2006-04-25

    IPC分类号: H04J11/00 H04Q7/24 H04B1/40

    CPC分类号: H04B1/28 H04B1/405

    摘要: A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

    摘要翻译: 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型,并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行,或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试,芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关,RF功率放大器和低噪声接收放大器,以提高工作范围。

    WIRELESS COMPUTER NETWORK INLUDING A MOBILE APPLIANCE CONTAINING A SINGLE CHIP TRANSCEIVER
    7.
    发明申请
    WIRELESS COMPUTER NETWORK INLUDING A MOBILE APPLIANCE CONTAINING A SINGLE CHIP TRANSCEIVER 有权
    无线计算机网络,包含单芯片收发器的移动电话

    公开(公告)号:US20060194614A1

    公开(公告)日:2006-08-31

    申请号:US11380165

    申请日:2006-04-25

    IPC分类号: H04B1/28 H04B1/38

    CPC分类号: H04B1/28 H04B1/405

    摘要: A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

    摘要翻译: 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型,并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行,或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试,芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关,RF功率放大器和低噪声接收放大器,以提高工作范围。

    Wireless computer network inluding a mobile appliance containing a single chip transceiver
    8.
    发明申请
    Wireless computer network inluding a mobile appliance containing a single chip transceiver 有权
    包括单芯片收发器的移动设备的无线计算机网络

    公开(公告)号:US20050237924A1

    公开(公告)日:2005-10-27

    申请号:US11168011

    申请日:2005-06-27

    IPC分类号: H04J11/00 H04L12/28

    CPC分类号: H04B1/28 H04B1/405

    摘要: A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

    摘要翻译: 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型,并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行,或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试,芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关,RF功率放大器和低噪声接收放大器,以提高工作范围。

    Reciprocating axial displacement device
    10.
    发明申请
    Reciprocating axial displacement device 失效
    往复式轴向位移装置

    公开(公告)号:US20060053830A1

    公开(公告)日:2006-03-16

    申请号:US10939625

    申请日:2004-09-13

    申请人: Andrew Adams

    发明人: Andrew Adams

    IPC分类号: F25B1/00

    摘要: A reciprocating axial displacement mechanism is disclosed generally comprising a housing, a rotating device, a displacement device having first and second undulating surfaces disposed in the housing, and a cam connected to the rotating device and disposed between the first and second undulating surfaces. The cam either has an undulating shape or has first and second undulating surfaces such that, as the cam rotates with the rotating device, the cam slides along the first and second undulating surfaces of the displacement device to cause the displacement device to move back and forth along the longitudinal axis of the rotating device. In certain embodiments, the displacement device is a pumping device, or an actuator for a pumping device, in a compressor.

    摘要翻译: 公开了一种往复式轴向位移机构,其通常包括壳体,旋转装置,具有设置在壳体中的第一和第二起伏表面的位移装置,以及连接到旋转装置并设置在第一和第二起伏表面之间的凸轮。 凸轮具有起伏的形状或具有第一和第二起伏表面,使得当凸轮随着旋转装置旋转时,凸轮沿着位移装置的第一和第二起伏表面滑动以使位移装置来回移动 沿着旋转装置的纵向轴线。 在某些实施例中,位移装置是压缩机中的泵送装置或泵送装置的致动器。