公开(公告)号：US08576010B2

公开(公告)日：2013-11-05

申请号：US13247103

申请日：2011-09-28

申请人： Naveen Yanduru ,  Robert Monroe ,  Mike Brobston

发明人： Naveen Yanduru ,  Robert Monroe ,  Mike Brobston

IPC分类号： H03F3/68

CPC分类号： H03F1/0288 ,  H03F1/56 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/192 ,  H03F2200/213 ,  H03F2200/222 ,  H03F2200/252 ,  H03F2200/387

摘要： An apparatus and method for a switched capacitor architecture for multi-band Doherty power amplifiers are provided. The apparatus is for amplifying Radio Frequency (RF) signals, and the apparatus includes a multi-band Power Amplifier (PA) including a plurality of input matching circuits including switchable capacitors, and a plurality of output matching circuits including the switchable capacitors, wherein the multi-band PA is tunable to more than one RF frequency band.

摘要翻译： 提供了一种用于多频带Doherty功率放大器的开关电容器结构的装置和方法。 该装置用于放大射频（RF）信号，该装置包括多频带功率放大器（PA），包括多个输入匹配电路，包括可切换电容器，以及包括可切换电容器的多个输出匹配电路，其中， 多频段PA可调谐到多个RF频段。

公开(公告)号：US20070158102A1

公开(公告)日：2007-07-12

申请号：US11330774

申请日：2006-01-12

申请人： Robert Monroe

发明人： Robert Monroe

IPC分类号： H05K1/16

CPC分类号： H05K1/021 ,  H05K1/0206 ,  H05K1/182 ,  H05K3/0061 ,  H05K3/341 ,  H05K3/4038 ,  H05K2201/0305 ,  H05K2201/0394 ,  H05K2201/10166 ,  H05K2201/10174

摘要： A power device that includes a printed circuit board having one or more dielectric and copper layers between a top and a bottom metal layer. The power device includes an area extending through all metal and dielectric layers of the printed circuit board except the bottom metal layer. A semiconductor device is positioned within the area and mounted to the bottom metal layer of the printed circuit board.

摘要翻译： 一种功率器件，其包括在顶部和底部金属层之间具有一个或多个电介质层和铜层的印刷电路板。 功率器件包括延伸穿过除了底部金属层之外的印刷电路板的所有金属和电介质层的区域。 半导体器件位于该区域内并安装到印刷电路板的底部金属层。

公开(公告)号：US06356607B1

公开(公告)日：2002-03-12

申请号：US08749885

申请日：1996-11-15

申请人： Logan Scott ,  Robert Monroe

发明人： Logan Scott ,  Robert Monroe

IPC分类号： H04L700

CPC分类号： H04B7/2681 ,  H04B1/7093 ,  H04J13/0022 ,  H04J13/107 ,  H04J2013/0037 ,  H04W28/06 ,  H04W56/0045 ,  H04W74/0891 ,  H04W88/02 ,  H04W88/08

摘要： In a first embodiment of the invention, a concatenated preamble code is formed by a kronecker product between two subcodes of the same or different lengths. The subcodes have favorable correlation properties and may be Barker codes, minimum peak sidelobe codes, Gold codes, Kasami codes, Bozta codes, or other codes. At the receiver a two-stage processor is used to detect the concatenated preamble code. The two-stage processor comprises a series of two filters, one of which is preferably a mismatched filter. In another aspect of the invention, a repeated codeword preamble is formed from a series of the same repeated short subcode. The short subcode may be an augmented or truncated odd-length code. At the receiver a single matched filter is preferably used to generate a series of spikes separated by the period of the subcode. An alert/confirm detector non-coherently adds together individual correlation spikes and reject false alarms. The alert function measures total correlation energy and adjusts detection thresholds based thereon, while the confirm function ensures that the proper number of correlation spikes exceed a detection threshold at the correct times. The preamble codes and their means for detection are preferably employed in a TDMA spread spectrum communication system, wherein a plurality of user stations communicate with a base station, one in each time slot (or virtual time slot).

摘要翻译： 在本发明的第一实施例中，连续的前导码由相同或不同长度的两个子码之间的克罗内斯乘积形成。 子代码具有良好的相关性质，可以是巴克码，最小峰值旁瓣码，金码，卡萨米码，波兹塔码 ，或其他代码。 在接收机处，使用两级处理器来检测级联的前导码。 两级处理器包括一系列两个过滤器，其中一个过滤器最好是错配过滤器。 在本发明的另一方面，重复的码字前导由一系列相同的重复的短子码形成。 短子码可以是扩充或截断的奇数码。 在接收机处，优选地使用单个匹配滤波器来产生由子码的周期分隔的一系列尖峰。 警报/确认检测器不相干地将各个相关尖峰相加并拒绝假警报。 警报功能测量总相关能量并根据此调整检测阈值，而确认功能确保适当数量的相关尖峰在正确的时间超过检测阈值。 前导码及其用于检测的装置优选地用于TDMA扩频通信系统中，其中多个用户站与基站通信，每个时隙（或虚拟时隙）中的一个。

公开(公告)号：US11298756B1

公开(公告)日：2022-04-12

申请号：US16420358

申请日：2019-05-23

申请人： Christopher C. Ciriniconi ,  Robert Monroe

发明人： Christopher C. Ciriniconi ,  Robert Monroe

IPC分类号： B23B51/10 ,  B23B5/16 ,  B23B51/02

摘要： A shaft deburring device includes a tubular metallic shaft having a drill mount at a first end and a deburring collar at a second end. The deburring collar has a plurality of radially disposed grinding balls secured about an interior surface of the collar. An exterior surface of the deburring collar has a plurality of radially disposed bristles.

公开(公告)号：US20060221874A1

公开(公告)日：2006-10-05

申请号：US11284466

申请日：2005-11-22

申请人： Michael Brobston ,  Breck Lovinggood ,  Robert Monroe

发明人： Michael Brobston ,  Breck Lovinggood ,  Robert Monroe

IPC分类号： H04J3/00

CPC分类号： H04B1/0475 ,  H03H7/25 ,  H04B1/525

摘要： A system for suppressing transmission channel noise in a signal transmission/reception device—particularly a time division duplex (TDD) wireless communications device—is provided. The system provides one or more shunt elements, instantiated at some point along the device's signal transmission channel. One or more attenuation elements are also instantiated at some point along the signal transmission channel, as are one or more disabling elements. A trigger signal indicates when the device is shifting from signal transmission operation (or mode) to signal reception operation. Responsive to assertion of the trigger signal, the shunt, attenuation and disabling elements are activated.

摘要翻译： 提供一种用于抑制信号发送/接收装置（特别是时分双工（TDD）无线通信装置）中的传输信道噪声的系统。 该系统提供一个或多个分流元件，在设备的信号传输通道的某个点处实例化。 一个或多个衰减元件也在信号传输通道的某个点被实例化，以及一个或多个禁用元件。 触发信号指示装置何时从信号传输操作（或模式）转换到信号接收操作。 响应于触发信号的断言，分流，衰减和禁用元件被激活。

公开(公告)号：US6154486A

公开(公告)日：2000-11-28

申请号：US224481

申请日：1998-12-31

申请人： Logan Scott ,  Robert Monroe

发明人： Logan Scott ,  Robert Monroe

IPC分类号： H04B1/7093 ,  H04B7/26 ,  H04J3/06 ,  H04J13/00 ,  H04J13/10 ,  H04W24/00 ,  H04W28/04 ,  H04W28/06 ,  H04W64/00 ,  H04W72/04 ,  H04W72/12 ,  H04W88/02 ,  H04W88/08 ,  H04W92/10 ,  A61F2/06 ,  H04L27/30

CPC分类号： H04W56/0045 ,  H04B1/7093 ,  H04B7/2681 ,  H04J13/0022 ,  H04J13/107 ,  H04J3/0682 ,  H04W56/003 ,  H04J13/102 ,  H04J2013/0037 ,  H04W74/0891 ,  H04W88/02 ,  H04W88/08 ,  H04W92/10

摘要： In a first embodiment of the invention, a concatenated preamble code is formed by a kronecker product between two subcodes of the same or different lengths. The subcodes have favorable correlation properties and may be Barker codes, minimum peak sidelobe codes, Gold codes, Kasami codes, Boztas codes, or other codes. At the receiver a two-stage processor is used to detect the concatenated preamble code. The two-stage processor comprises a series of two filters, one of which is preferably a mismatched filter. In another aspect of the invention, a repeated codeword preamble is formed from a series of the same repeated short subcode. The short subcode may be an augmented or truncated odd-length code. At the receiver a single matched filter is preferably used to generate a series of spikes separated by the period of the subcode. An alert/confirm detector non-coherently adds together individual correlation spikes and reject false alarms. The alert function measures total correlation energy and adjusts detection thresholds based thereon, while the confirm function ensures that the proper number of correlation spikes exceed a detection threshold at the correct times. The preamble codes and their means for detection are preferably employed in a TDMA spread spectrum communication system, wherein a plurality of user stations communicate with a base station, one in each time slot (or virtual time slot).

公开(公告)号：US06282228B1

公开(公告)日：2001-08-28

申请号：US08821611

申请日：1997-03-20

申请人： Robert Monroe

发明人： Robert Monroe

IPC分类号： H03H730

CPC分类号： H04L27/22 ,  H04B1/707 ,  H04B2201/709709 ,  H04J13/004 ,  H04L27/2003

摘要： A technique for modulating and demodulating CPM spread spectrum signals and variations of CPM spread spectrum signals uses a set of codes or multiple sets of codes that reduce cross-correlation interference. A transmitter divides a signal data stream into I and Q data streams, independently modulates the I and Q data streams using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal, simultaneously attempts to correlate for I and Q chip sequences, and interleaves the correlated I and Q data streams into a unified signal data stream. In one embodiment the receiver separates the received spread spectrum signal into real and imaginary parts, attempts to correlate both real and imaginary parts for a plurality of chip sequences, and combines separate correlation signals into a unified signal data stream. In other embodiments single-bit or multi-bit digitization of the received spread spectrum signal is carried out prior to correlation. In another embodiment the transmitter differentially phase encodes the information to be transmitted, and the receiver decodes the phase-encoded information.

摘要翻译： 用于调制和解调CPM扩频信号和CPM扩频信号的变化的技术使用一组代码或减少互相关干扰的多组代码。 发射机将信号数据流划分为I和Q数据流，使用CPM或相关技术独立地调制I和Q数据流，并将多个结果叠加以进行传输。 接收机接收叠加的扩频信号，同时尝试将I和Q码片序列相关，并将相关的I和Q数据流交织成统一的信号数据流。 在一个实施例中，接收机将接收的扩展频谱信号分离成实部和虚部，试图将多个码片序列的实部和虚部相关，并将分离的相关信号组合成统一的信号数据流。 在其它实施例中，所接收的扩频信号的单比特或多比特数字化在相关之前进行。 在另一个实施例中，发射机对要发送的信息进行差分相位编码，并且接收机对相位编码信息进行解码。

公开(公告)号：US5987079A

公开(公告)日：1999-11-16

申请号：US749885

申请日：1996-11-15

申请人： Logan Scott ,  Robert Monroe

发明人： Logan Scott ,  Robert Monroe

摘要： In a first embodiment of the invention, a concatenated preamble code is formed by a kronecker product between two subcodes of the same or different lengths. The subcodes have favorable correlation properties and may be Barker codes, minimum peak sidelobe codes, Gold codes, Kasami codes, Bozta codes, or other codes. At the receiver a two-stage processor is used to detect the concatenated preamble code. The two-stage processor comprises a series of two filters, one of which is preferably a mismatched filter. In another aspect of the invention, a repeated codeword preamble is formed from a series of the same repeated short subcode. The short subcode may be an augmented or truncated odd-length code. At the receiver a single matched filter is preferably used to generate a series of spikes separated by the period of the subcode. An alert/confirm detector non-coherently adds together individual correlation spikes and reject false alarms. The alert function measures total correlation energy and adjusts detection thresholds based thereon, while the confirm function ensures that the proper number of correlation spikes exceed a detection threshold at the correct times. The preamble codes and their means for detection are preferably employed in a TDMA spread spectrum communication system, wherein a plurality of user stations communicate with a base station, one in each time slot (or virtual time slot).

公开(公告)号：US20070010218A1

公开(公告)日：2007-01-11

申请号：US11177032

申请日：2005-07-08

申请人： Robert Monroe ,  Michael Brobston

发明人： Robert Monroe ,  Michael Brobston

IPC分类号： H04B1/04

CPC分类号： H03F1/0266 ,  H03F1/02 ,  H03F1/0244 ,  H03F3/189 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/15 ,  H03F2200/27 ,  H03F2200/336 ,  H04B2001/045

摘要： An RF transmitter having an RF power amplifier comprising: 1) a drive transistor that receives an input RF signal and generates an output RF signal; and 2) a drain bias adaptation circuit for supplying drain current to the drive transistor. The drain bias adaptation circuit comprises: i) a first switch for coupling the drive transistor drain to a system supply voltage; ii) a second switch for coupling the drive transistor drain to a high supply voltage that is greater than the system supply voltage; iii) a first bypass capacitor coupled to the first switch for reducing noise in the drain current when the first switch is closed and the second switch is open; and iv) a second bypass capacitor coupled to the second switch for reducing noise in the drain current when the second switch is closed and the first switch is open.

摘要翻译： 一种具有RF功率放大器的RF发射机，包括：1）驱动晶体管，其接收输入RF信号并产生输出RF信号; 和2）用于向驱动晶体管提供漏极电流的漏极偏置适配电路。 漏极偏置适配电路包括：i）用于将驱动晶体管漏极耦合到系统电源电压的第一开关; ii）用于将驱动晶体管漏极耦合到大于系统电源电压的高电源电压的第二开关; iii）耦合到所述第一开关的第一旁路电容器，用于当所述第一开关闭合并且所述第二开关断开时降低所述漏极电流中的噪声; 以及iv）耦合到所述第二开关的第二旁路电容器，用于当所述第二开关闭合并且所述第一开关断开时降低所述漏极电流中的噪声。

公开(公告)号：US20050255810A1

公开(公告)日：2005-11-17

申请号：US11079754

申请日：2005-03-14

申请人： Robert Monroe

发明人： Robert Monroe

IPC分类号： H01P1/15 ,  H01Q11/12 ,  H04B1/04 ,  H04B1/44 ,  H04B1/48

CPC分类号： H01P1/15 ,  H04B1/48

摘要： A transmit-receive (T/R) switch for coupling a TDD transceiver to an antenna. The T/R switch comprises 1) a first circulator having a first port for receiving a transmit signal from the transceiver during transmit mode, a second port for sending the transmit signal to the antenna during transmit mode and receiving a received signal from the antenna during receive mode, and a third port for sending the received signal towards the transceiver during receive mode. The T/R switch further comprises 2) a second circulator having a first port for receiving the received signal from the third port of the first circulator during receive mode and a second port for sending the received signal towards the transceiver during receive mode, and 3) a termination load coupled to a third port of the second circulator. The circulators divert RF energy reflected from the antenna during transmit mode into the termination load.

摘要翻译： 用于将TDD收发器耦合到天线的发送 - 接收（T / R）开关。 T / R开关包括：1）具有第一端口的第一循环器，用于在发射模式期间从收发器接收发射信号，第二端口用于在发射模式期间将发射信号发送到天线，并且在发射模式期间从天线接收接收信号 接收模式和用于在接收模式期间向收发信机发送接收信号的第三端口。 T / R开关还包括2）第二循环器，具有用于在接收模式期间从第一循环器的第三端口接收接收信号的第一端口和用于在接收模式期间向接收器发送接收信号的第二端口，以及3 ）耦合到第二循环器的第三端口的终端负载。 循环器在发射模式期间将从天线反射的RF能量转移到终端负载中。