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    • 3. 发明申请
    • APPARATUS AND METHOD FOR CONTROLLING ADAPTIVE CIRCUITS
    • 用于控制自适应电路的装置和方法
    • WO2003017553A2
    • 2003-02-27
    • PCT/US2002/025557
    • 2002-08-12
    • SOMA NETWORKS, INC.BLODGETT, James, R.
    • BLODGETT, James, R.
    • H04L
    • H03F1/3235H03F2201/3212
    • A feed-forward amplifier having a signal cancellation loop including a cancellation node that includes a gain controller and a phase controller. Each controller provides a discrete tap steering signal and modulates the corresponding tap steering signal with a discrete tracer signal that takes on a preselected sequence of values. The sequence chosen so that the tracer signal is mutually orthogonal to each other tracer signal over a preselected period. A gain and phase adjuster connected to the outputs of the controllers provides a controlled gain change and phase shift in the signal cancellation loop, the magnitude of the gain change and phase shift controlled by the corresponding tap steering signals presented to the gain and phase adjuster by the controllers. A detector, the input of which is connected to the cancellation node and the output of which is connected to the controllers, outputs a measure of the envelope of the signal at the cancellation node. After the preselected period new values for the tap steering signals presented to the gain and phase adjuster by the controllers are obtained by multiplying detector output by the respective tracer signal, each over the respective preselected period, summing each resulting series of values, and changing the tap steering signals to be modulated and presented to the gain and phase adjuster in accordance with the values of the respective sums.
    • 具有信号消除回路的前馈型放大器包括消除节点,增益控制器C1和相位控制器C2。 每个控制器提供离散的抽头转向信号,其使用采用预选序列值的离散示踪器信号进行调制。 选择该序列,使得示踪信号在预选的周期内彼此相互垂直于示踪信号。 连接到控制器输出的增益和相位调节器GPA1在信号消除环路中提供受控的增益变化和相移。 检测器D1,其输入端连接到取消节点,其输出端连接到控制器,输出消除节点处的信号包络的测量。 在预选时段之后,分接转向信号的新值通过将检测器输出乘以相应的示踪信号而获得,每个在相应的预选周期之间,将每个所得到的一系列值相加,并将要调制并呈现的抽头转向信号 增益和相位调整器根据相应的和的值。
    • 4. 发明申请
    • WIRELESS LOCAL LOOP ANTENNA
    • 无线本地环路天线
    • WO2002063896A1
    • 2002-08-15
    • PCT/US2002/002867
    • 2002-02-04
    • SOMA NETWORKS, INC.BLODGETT, James, R.HEINZMANN, Fred, J.
    • BLODGETT, James, R.HEINZMANN, Fred, J.
    • H04Q7/20
    • H04W84/14C08L63/00C08L79/04H01L23/293H01L2924/0002H01L2924/3011H01Q1/241H01Q3/24H01Q3/446H01Q21/28C08L2666/20H01L2924/00
    • A wireless local loop system is provided that includes a wireless base station (36) that communicates with a subscriber station (41, 48) via a wireless link. The wireless link can carry a voice service, such as telephone calls, or a data service, such as internet browsing. The subscriber station includes a steerable antenna. A presently preferred steerable antenna for use with the subscriber station includes a driven element mounted on a base plane that is surrounded by a plurality of parasitic elements also mounted to the base plane. The parasitic elements can be optionally grounded or floated in order to reflect the wireless link towards the driven element. The antenna can be oriented in a desired direction during the transception of a voice or data service. A method of transceiving between a wireless local loop subscriber station and a wireless local loop base station is also provided.
    • 提供了一种无线本地环路系统,其包括经由无线链路与用户站(41,48)进行通信的无线基站(36)。 无线链路可以携带诸如电话呼叫之类的语音服务或诸如因特网浏览的数据服务。 用户站包括可转向天线。 用于用户台的当前优选的可操纵天线包括安装在基本平面上的被驱动元件,该从动元件被也安装到基础平面的多个寄生元件包围。 寄生元件可以可选地接地或浮动,以便将无线链路反向朝向被驱动元件。 在传输语音或数据业务期间,天线可以在所需方向上定向。 还提供了一种在无线本地环路用户站和无线本地环路基站之间收发的方法。