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公开(公告)号：US07398049B2
公开(公告)日：2008-07-08
申请号：US11355149
申请日：2006-02-16
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台和无线本地环路基站之间收发的方法。
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公开(公告)号：US08121533B2
公开(公告)日：2012-02-21
申请号：US12134771
申请日：2008-06-06
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。
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公开(公告)号：US07031652B2
公开(公告)日：2006-04-18
申请号：US09775510
申请日：2001-02-05
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.
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4.发明授权
公开(公告)号：US5311155A
公开(公告)日：1994-05-10
申请号：US59798
申请日：1993-05-10
申请人： James R. Blodgett
发明人： James R. Blodgett
CPC分类号： H04B3/14
摘要： A method and apparatus are disclosed for imparting a linear, but sloped, frequency response signal to a narrowband signal having a sinusoidal component at .omega..sub.0 radians per second. An illustrative embodiment comprises: a first signal divider, a first signal combiner and three signal paths between them. The first signal path advantageously comprises a first bi-phase attenuator; the second signal path advantageously comprises a first delay element; and the third signal path advantageously comprises both a second bi-phase attenuator and a second delay element. The first delay element preferably makes the second signal path substantially close to ##EQU1## seconds longer than the first signal path, where N is an integer. The second delay element preferably makes the third signal path substantially close to ##EQU2## seconds longer than the first signal path.
摘要翻译： 公开了一种方法和装置，用于向具有ω0弧度/秒的正弦分量的窄带信号赋予线性但倾斜的频率响应信号。 示例性实施例包括：第一信号分配器，第一信号组合器和它们之间的三个信号路径。 第一信号路径有利地包括第一双相衰减器; 第二信号路径有利地包括第一延迟元件; 并且第三信号路径有利地包括第二双相衰减器和第二延迟元件。 第一延迟元件优选地使得第二信号路径基本上接近比第一信号路径长的“IMAGE”秒，其中N是整数。 第二延迟元件优选地使得第三信号路径基本上接近比第一信号路径长的“IMAGE”秒。
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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。
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公开(公告)号：US20080261511A1
公开(公告)日：2008-10-23
申请号：US12134771
申请日：2008-06-06
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。
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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。
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公开(公告)号：US5483191A
公开(公告)日：1996-01-09
申请号：US311224
申请日：1994-09-23
申请人： James R. Blodgett
发明人： James R. Blodgett
CPC分类号： H03F1/306 , H03F3/1935
摘要： Embodiments of the present invention bias a field effect transistor with only a single voltage source and generally do not have the disadvantages of traditional "floated source" bias techniques. Furthermore, some embodiments of the present invention are capable of automatically compensating for the normal manufacturing variations that occur in the physical characteristics of individual FETs.
摘要翻译： 本发明的实施例仅使用单个电压源来偏置场效应晶体管，并且通常不具有传统的“漂浮源”偏置技术的缺点。 此外，本发明的一些实施例能够自动补偿在各个FET的物理特性中发生的正常制造变化。
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9.发明授权Method and apparatus for electrically adjusting delay in radio-frequency systems 失效电气调节射频系统延时的方法和装置公开(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
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。
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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。
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