公开(公告)号：US07538632B2

公开(公告)日：2009-05-26

申请号：US11734103

申请日：2007-04-11

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03F3/66

CPC分类号： H03F1/3235 ,  H03F2201/3212

摘要： 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.

摘要翻译： 一种具有包括消除节点的信号消除回路的前馈放大器，包括增益控制器和相位控制器。 每个控制器提供离散的抽头转向信号，并且使用采用预选序列值的离散示踪器信号来调制相应的抽头转向信号。 所选择的序列使得示踪信号在预选的周期内彼此相互正交。 连接到控制器的输出的增益和相位调节器在信号消除环路中提供受控的增益变化和相移，通过由增益和相位调节器呈现给增益和相位调节器的相应抽头转向信号控制增益变化和相位的幅度， 控制器。 检测器，其输入端连接到取消节点，其输出端连接到控制器，输出消除节点处信号包络的测量。 在预选时段之后，由控制器呈现给增益和相位调节器的抽头转向信号的新值通过将检测器输出乘以相应的示踪器信号而获得，每个在相应的预选周期内，对每个所得到的一系列值进行求和，并且将 根据相应的和的值来点击要调制的转向信号并将其呈现给增益和相位调整器。

公开(公告)号：US20080261511A1

公开(公告)日：2008-10-23

申请号：US12134771

申请日：2008-06-06

申请人： James R. Blodgett ,  Fred Judson Heinzmann

发明人： James R. Blodgett ,  Fred Judson Heinzmann

IPC分类号： H04H20/71

CPC分类号： H04W84/14 ,  C08L63/00 ,  C08L79/04 ,  H01L23/293 ,  H01L2924/0002 ,  H01L2924/3011 ,  H01Q1/241 ,  H01Q3/24 ,  H01Q3/446 ,  H01Q21/28 ,  C08L2666/20 ,  H01L2924/00

摘要： A wireless local loop system is provided that includes a wireless base station that communicates with a subscriber station 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.

摘要翻译： 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进行通信的无线基站。 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。 用于用户站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围绕。 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。

公开(公告)号：US07218172B2

公开(公告)日：2007-05-15

申请号：US10486792

申请日：2002-08-12

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03F1/26

CPC分类号： H03F1/3235 ,  H03F2201/3212

摘要： 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.

摘要翻译： 一种具有包括消除节点的信号消除回路的前馈放大器，包括增益控制器和相位控制器。 每个控制器提供离散的抽头转向信号，并且使用采用预选序列值的离散示踪器信号来调制相应的抽头转向信号。 所选择的序列使得示踪信号在预选的周期内彼此相互正交。 连接到控制器的输出的增益和相位调节器在信号消除环路中提供受控的增益变化和相移，通过由增益和相位调节器呈现给增益和相位调节器的相应抽头转向信号控制增益变化和相位的幅度， 控制器。 检测器，其输入端连接到取消节点，其输出端连接到控制器，输出消除节点处信号包络的测量。 在预选时段之后，由控制器呈现给增益和相位调节器的抽头转向信号的新值通过将检测器输出乘以相应的示踪器信号而获得，每个在相应的预选周期内，对每个所得到的一系列值进行求和，并将 根据相应的和的值来点击要调制的转向信号并将其呈现给增益和相位调整器。

公开(公告)号：US08121533B2

公开(公告)日：2012-02-21

申请号：US12134771

申请日：2008-06-06

申请人： James R. Blodgett ,  Fred J. Heinzman

发明人： James R. Blodgett ,  Fred J. Heinzman

IPC分类号： H04Q7/20

CPC分类号： H04W84/14 ,  C08L63/00 ,  C08L79/04 ,  H01L23/293 ,  H01L2924/0002 ,  H01L2924/3011 ,  H01Q1/241 ,  H01Q3/24 ,  H01Q3/446 ,  H01Q21/28 ,  C08L2666/20 ,  H01L2924/00

摘要： A wireless local loop system is provided that includes a wireless base station that communicates with a subscriber station 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.

摘要翻译： 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进行通信的无线基站。 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。

公开(公告)号：US07456706B2

公开(公告)日：2008-11-25

申请号：US10572951

申请日：2004-09-21

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03H7/30

CPC分类号： H03H7/325 ,  H01P9/00 ,  H03H7/18 ,  H03H7/345

摘要： An apparatus and method for providing an electrically adjustable RF delay in which a splitter splits an input signal into two signal paths, one signal path providing a delay fixed at an integral number of wavelengths of a desired center frequency and both signal paths providing electrically adjustable attenuation. A combiner combines the signals passing through the signal paths, such that the sum of the electrically-adjustable attenuation provided by the signal paths adds to unity, whereby the input signal is delayed by an adjustable time depending upon the attenuations provided by the signal paths.

摘要翻译： 一种用于提供电可调节RF延迟的装置和方法，其中分配器将输入信号分裂成两个信号路径，一个信号路径提供固定在期望中心频率的整数个波长的延迟，以及提供电可调衰减的两个信号路径 。 组合器组合通过信号路径的信号，使得由信号路径提供的电可调衰减的总和增加到一个，由此根据由信号路径提供的衰减，输入信号被延迟可调节的时间。

公开(公告)号：US06340915B1

公开(公告)日：2002-01-22

申请号：US09715085

申请日：2000-11-20

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03F366

CPC分类号： H03F1/3235

摘要： The present invention provides a novel feed forward amplifier (“FFA”) and a pilot tone generator-receiver therefor. In an embodiment of the invention, the feed forward amplifier only requires a single oscillator to operate both the pilot tone generator and pilot tone receiver used in conjunction with the amplifier circuitry of the FFA. In another embodiment of the invention, a method is provided of generating and detecting a pilot tone from a single oscillating signal.

摘要翻译： 本发明提供一种新型的前馈放大器（“FFA”）及其导频音发生器 - 接收器。 在本发明的一个实施例中，前馈放大器仅需要单个振荡器来操作与FFA的放大器电路结合使用的导频音产生器和导频音接收机。 在本发明的另一实施例中，提供了一种从单个振荡信号产生和检测导频音的方法。

公开(公告)号：US5396196A

公开(公告)日：1995-03-07

申请号：US174923

申请日：1993-12-29

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03C1/52 ,  H03C3/40 ,  H03D7/16 ,  H04L27/20 ,  H04L27/36

CPC分类号： H03C3/406 ,  H03C1/52 ,  H03D7/168 ,  H04L27/368

摘要： A carrier leakage suppression circuit is disclosed which adaptively suppresses carrier leakage in a signal processing device which modulates a carrier signal with an in-phase baseband signal and a quadrature baseband signal to generate a radio frequency (RF) output signal. The carrier leakage suppression circuit operates by imparting a first signature to the in-phase baseband signal and a second signature to the quadrature baseband signal prior to modulation of the carrier signal. In-phase and quadrature carrier leakage components in the RF output signal are isolated and measured by respectively correlating the RF output signal with the first and second signatures. An in-phase offset and a quadrature offset are generated as a function of the measurement of the in-phase and quadrature carrier leakage components. The in-phase baseband signal is combined with the in-phase offset and the quadrature baseband signal is combined with the quadrature offset to thereby suppress carrier leakage.

摘要翻译： 公开了一种载波泄漏抑制电路，其自适应地抑制信号处理装置中的载波泄漏，该信号处理装置利用同相基带信号和正交基带信号调制载波信号，以产生射频（RF）输出信号。 载波泄漏抑制电路通过在对载波信号进行调制之前赋予正交基带信号的第一个签名和正交基带信号的第二签名来进行操作。 通过分别将RF输出信号与第一和第二签名相关联来隔离和测量RF输出信号中的同相和正交载波泄漏分量。 作为同相和正交载波泄漏分量的测量的函数产生同相偏移和正交偏移。 同相基带信号与同相偏移组合，正交基带信号与正交偏移组合，从而抑制载波泄漏。

公开(公告)号：US07342446B2

公开(公告)日：2008-03-11

申请号：US10519191

申请日：2003-06-25

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03F1/32

CPC分类号： H03F1/3229

摘要： An apparatus and method for operating a feed-forward amplifier in which, after the signal-cancellation and intermodulation-cancellation loops have initially been nulled, the feed-forward amplifier is operated so that both loops are controlled so as to minimize intermodulation at the output of the feed-forward amplifier.

摘要翻译： 一种用于操作前馈放大器的装置和方法，其中在信号消除和互调消除环路最初被置零之后，前馈放大器被操作，使得两个环路被控制以使输出端的互调最小化 的前馈放大器。

公开(公告)号：US07053702B2

公开(公告)日：2006-05-30

申请号：US10432019

申请日：2001-11-09

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03F3/66

CPC分类号： H03F1/3235 ,  H03F3/66

摘要： The present invention provides a novel feed forward amplifier (“FFA”) and a pilot tone generator-receiver therefor. In an embodiment of the invention, the feed forward amplifier only requires a single oscillator to operate both the pilot tone generator and pilot tone receiver used in conjunction with the amplifier circuitry of the FFA. In another embodiment of the invention, a method is provided of generating and detecting a pilot tone from a single oscillating signal.

公开(公告)号：US06614298B2

公开(公告)日：2003-09-02

申请号：US10016691

申请日：2001-12-17

申请人： James R. Blodgett

发明人： James R. Blodgett

IPC分类号： H03F366

CPC分类号： H03F1/3235 ,  H03F2201/3212

摘要： An apparatus and method for operating an adaptive circuit includes injecting a set of orthogonal tracer signals into the circuit. The tracers signals are extracted after modification by at least a portion of the circuit and are examined by respective controllers to modify operation of the circuit. In one embodiment, the invention is incorporated into a feed forward amplifier where a set of orthogonal tracer signals are injected into the amplifier. A detector controller detects the orthogonal tracer signals, as modified by portions of the amplifier, and applies each tracer signal to a respective controller. Each controller examines its respective signal and modifies its output to control a portion of the amplifier accordingly. The controllers apply their outputs to the respective portions of the amplifier at substantially the same time, leading to quick convergence of the operating point of the amplifier to an optimal or near-optimal configuration. Injection of the tracer signals into the amplifier is accomplished by dithering the controller outputs by the respective orthogonal tracer signals.