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11.发明授权Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication system 有权用于在通信系统中校准增益和/或相位不平衡和/或DC偏移的装置和方法公开(公告)号：US07620373B2
公开(公告)日：2009-11-17
申请号：US11590278
申请日：2006-10-30
CPC分类号： H04B17/14 , H04B7/08 , H04B17/101 , H04B17/104
摘要： A radio frequency transceiver for off-line transmit and receive calibrations includes: a transmit pre-distortion module configured to receive a transmit calibration signal during a transmit calibration mode, a transmit communication signal during a transmit communication operation mode, and one or more transmit calibration adjustment signals; a transmit channel frequency converter; and a transmit calibration module configured to provide the one or more transmit calibration adjustment signals and the transmit calibration signal to the transmit pre-distortion module. It may also include a receive channel frequency converter; a receive pre-distortion module configured to receive a receive calibration signal during the receive calibration mode, a receive communication signal during a receive communication operation mode, and one or more receive calibration adjustment signals; and a receive calibration module configured to provide the one or more receive calibration adjustment signals to the receive pre-distortion module and a receive calibration signal to the transmit pre-distortion module.
摘要翻译： 用于离线发射和接收校准的射频收发器包括：发射预失真模块，被配置为在发射校准模式期间接收发射校准信号，在发射通信操作模式期间接收发射校准信号，以及一个或多个发射校准 调整信号; 发射信道变频器; 以及发射校准模块，被配置为将所述一个或多个发射校准调整信号和所述发射校准信号提供给所述发射预失真模块。 它还可以包括接收频道变频器; 接收预失真模块，被配置为在接收校准模式期间接收接收校准信号，接收通信操作模式期间的接收通信信号以及一个或多个接收校准调整信号; 以及接收校准模块，其被配置为向所述接收预失真模块提供所述一个或多个接收校准调整信号，以及向所述发射预失真模块提供接收校准信号。
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12.发明授权公开(公告)号：US07231189B2
公开(公告)日：2007-06-12
申请号：US11594914
申请日：2006-11-09
摘要： A communication system includes a front-end multi-throw switch, a back-end multi-throw switch, multiple filters and a switch controller. The front-end multi-throw switch includes front-end throws and a front-end pole. The front-end pole is coupled to a receive channel or a transmit channel. The front-end pole is switchably coupled to one of the front-end throws. The back-end multi-throw switch includes back-end throws and a back-end pole. Each of the back-end throws is associated with a corresponding one of the front-end throws. The back-end pole is coupled to the receive channel or the transmit channel. The back-end pole is switchably coupled to one of the back-end throws. The one of the back-end throws corresponds to the one of the front-end throws. The filters are interposed between the front-end multi-throw switch and the back-end multi-throw switch. Each of the filters has a first port coupled to one of the front-end throws and a second port coupled to one of the back-end throws. A first one of the filters includes a filter of a first bandwidth. A second one of the filters includes a filter of a second bandwidth. The first bandwidth is different from the second bandwidth. The switch controller is coupled to the front-end multi-throw switch and the back-end multi-throw switch. The switch controller is configured to synchronously switch the front-end pole to one of the front-end throws and the back-end pole to a corresponding one of the back-end throws.
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13.发明申请APPARATUS AND METHOD FOR CALIBRATION OF GAIN AND/OR PHASE IMBALANCE AND/OR DC OFFSET IN A COMMUNICATION SYSTEM 有权用于在通信系统中校准增益和/或相位不平衡和/或直流偏移的装置和方法公开(公告)号：US20100022208A1
公开(公告)日：2010-01-28
申请号：US12575455
申请日：2009-10-07
IPC分类号： H04B1/04
CPC分类号： H04B17/14 , H04B7/08 , H04B17/101 , H04B17/104
摘要： An example of a radio frequency (RF) transmitter system for communication may include a transmit pre-distortion module configured to provide a second transmit calibration signal during a transmit calibration mode based on a first transmit calibration signal and one or more transmit calibration adjustment signals. The one or more transmit calibration adjustment signals may include an offset parameter associated with DC offset and an imbalance parameter associated with at least one of gain and phase imbalances. The system may include a transmit channel frequency converter coupled to the transmit pre-distortion module. The transmit channel frequency converter may be configured to provide a fourth transmit calibration signal during the transmit calibration mode based on a third transmit calibration signal and a transmit reference signal.
摘要翻译： 用于通信的射频（RF）发射机系统的示例可以包括被配置为在发射校准模式期间基于第一发射校准信号和一个或多个发射校准调整信号来提供第二发射校准信号的发射预失真模块。 一个或多个发射校准调整信号可以包括与DC偏移相关联的偏移参数和与增益和相位不平衡中的至少一个相关联的不平衡参数。 该系统可以包括耦合到发射预失真模块的发射信道频率转换器。 发射信道频率转换器可以被配置为基于第三发射校准信号和发射参考信号在发射校准模式期间提供第四发射校准信号。
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公开(公告)号：US06803252B2
公开(公告)日：2004-10-12
申请号：US09990247
申请日：2001-11-21
申请人： Binneg Y. Lao , William W. Chen , David A. Rowe , Inho Kim
发明人： Binneg Y. Lao , William W. Chen , David A. Rowe , Inho Kim
IPC分类号： H01L2144
CPC分类号： H01L23/66 , H01L23/49816 , H01L24/48 , H01L24/49 , H01L2223/6622 , H01L2223/6627 , H01L2223/6638 , H01L2224/48091 , H01L2224/48227 , H01L2224/49111 , H01L2224/49171 , H01L2924/00014 , H01L2924/01005 , H01L2924/01006 , H01L2924/01015 , H01L2924/01019 , H01L2924/01023 , H01L2924/01027 , H01L2924/01039 , H01L2924/01055 , H01L2924/01076 , H01L2924/014 , H01L2924/09701 , H01L2924/14 , H01L2924/15173 , H01L2924/15174 , H01L2924/15311 , H01L2924/15787 , H01L2924/1903 , H01L2924/30105 , H01L2924/30107 , H01L2924/3011 , H01L2924/00 , H01L2924/00012 , H01L2224/45099 , H01L2224/05599
摘要： Methods and apparatus for providing connection packages for high-speed integrated circuits (“ICs”) in optical, electronic, wired or wireless communications are disclosed. The connection package achieves dimensional transformation of signal routes from high-speed, high-density IC's input/output pads to the external terminals such as coaxial terminals and BGA balls, while maintaining constant characteristic impedance throughout the transmission lines. A package may include a substrate having microstrips for communicating signals between the IC pads and external terminals. A pair of differential microstrips can be positioned closer to each other near the IC pads and create capacitive coupling. Such coupled capacitance allows the width of the microstrips to be reduced. A portion of the coupled microstrips near the IC pads can be widened to increase the capacitance so that the overall transmission path can become an all-pass network—from the IC pads, through the bonding wires, to the microstrips. The rest of the portions of the microstrips can be tapered out to their respective external connectors. In addition, a multi-layer package may include a substrate, at least one coaxial external terminal formed at the side of the package for conducting a high-speed signal, BGA connectors formed at the bottom of the package for conducting low-speed signals, a microstrip for connecting the high-speed signal to the coaxial terminal, and microstrips and internal coaxial connectors for connecting the low-speed signals to the BGA connectors. Substantially constant characteristic impedance is achieved throughout the signal transmission paths in the package.
摘要翻译： 公开了用于为光学，电子，有线或无线通信中的高速集成电路（“IC”）提供连接封装的方法和装置。 连接封装实现了从高速，高密度IC输入/输出焊盘到诸如同轴端子和BGA球的外部端子的信号路线的尺寸变换，同时在整个传输线路上保持恒定的特性阻抗。 封装可以包括具有用于在IC焊盘和外部端子之间传递信号的微带的衬底。 一对差分微带可以靠近IC焊盘更靠近，并产生电容耦合。 这种耦合电容允许微带的宽度减小。 IC焊盘附近的耦合微带的一部分可以加宽以增加电容，使得整个传输路径可以成为从IC焊盘，通过接合线到微带的全通网络。 微带的其余部分可以锥形到它们各自的外部连接器。 此外，多层封装可以包括衬底，形成在封装侧的用于传导高速信号的至少一个同轴外部端子，形成在封装底部的用于传导低速信号的BGA连接器， 用于将高速信号连接到同轴端子的微带，以及用于将低速信号连接到BGA连接器的微带和内部同轴连接器。 在封装中的整个信号传输路径中实现了基本恒定的特性阻抗。
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公开(公告)号：US20100245665A1
公开(公告)日：2010-09-30
申请号：US12751887
申请日：2010-03-31
CPC分类号： H04N5/268
摘要： A video switching and control system is described that provides compatibility with conventional analog cameras while also accepting network IP type cameras. The system offers reduced control latency, improved recording efficiency, and more flexible display features with greatly improved performance and update rates.The system offers greatly reduced wiring and installation complexity thus improving reliability. The architecture is scalable and expandable in either the analog camera count or the IP camera count. The system integrates these two camera technologies so that the camera source or recorder is transparent to the user. Each user can control all video sources, analog, IP, or recorded, from one keyboard and one or more monitors at each work station.The unique all digital solution provides digital reliability and broadcast quality performance. The solution is significantly smaller and substantially lower cost the previous solutions, and offers higher monitor output capacity without the need for expensive down framing approaches currently used in the industry.
摘要翻译： 描述了一种视频切换和控制系统，其提供与常规模拟摄像机的兼容性，同时也接受网络IP型摄像机。 该系统提供降低的控制延迟，提高记录效率，以及更灵活的显示功能，大大提高了性能和更新率。 该系统大大降低了布线和安装的复杂性，从而提高了可靠性。 该架构是可扩展的，可以在模拟摄像机计数或IP摄像机计数中进行扩展。 该系统集成了这两种相机技术，使相机源或记录器对用户透明。 每个用户可以从一个键盘和一个或多个监视器在每个工作站控制所有视频源，模拟，IP或记录。 独特的全数字解决方案提供数字可靠性和广播质量性能。 该解决方案在以前的解决方案中显着更小，成本更低，并且提供更高的监视器输出容量，而不需要业界目前使用的昂贵的下行框架方法。
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公开(公告)号：US4593243A
公开(公告)日：1986-06-03
申请号：US645429
申请日：1984-08-29
申请人： Binneg Y. Lao , David A. Rowe
发明人： Binneg Y. Lao , David A. Rowe
CPC分类号： G01R1/07342
摘要： Coaxial cables each having a cylindrical electrically conductive outer shield and a central conductive wire insulated from the shield are conductively coupled through a connector to coplanar conductors on a dielectric substrate. The conductors converge toward an opening in the substrate. The coplanar conductors alternately are ground and signal conductors. Each coaxial cable shield is conductively coupled to two ground conductors and the cable wire is conductively coupled to the signal conductor between the two ground conductors. At the substrate opening the ground and signal conductors are conductively coupled to planar stripline waveguide ground and signal blades, respectively. Ground blades between the signal blades are a factor in controlling the signal blade impedance and provide isolation between the signal blades. Each blade is perpendicular to the substrate and has a pitch angle such that the blade extends through the opening below the substrate. A wire or needle probe is conductively coupled to the blade distal end. The needle end is adapted to contact a conductive pad on an IC (integrated circuit) chip. The coplanar conductors and stripline blades are configured to maintain substantially constant characteristic impedance in the signal conductors and their respective blades and to isolate signals in the signal conductors and blades from one another.
摘要翻译： 每个具有圆柱形导电外屏蔽和与屏蔽绝缘的中心导线的同轴电缆通过连接器导电耦合到电介质基板上的共面导体。 导体朝向衬底中的开口会聚。 共面导体交替地是接地和信号导体。 每个同轴电缆屏蔽层导电地耦合到两个接地导体，并且电缆线导电耦合到两个接地导体之间的信号导体。 在基板开口处，接地和信号导体分别与平面带状线波导接地和信号叶片导电耦合。 信号刀片之间的接地刀片是控制信号刀片阻抗并提供信号刀片之间隔离的一个因素。 每个叶片垂直于基底并且具有俯仰角使得叶片延伸通过基底下方的开口。 电线或针式探头与刀片的远端导电耦合。 针端适于接触IC（集成电路）芯片上的导电焊盘。 共面导体和带状线刀片被配置为在信号导体及其各自的刀片中保持基本上恒定的特性阻抗，并且将信号导体和刀片中的信号彼此隔离。
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公开(公告)号：US06950485B2
公开(公告)日：2005-09-27
申请号：US10329739
申请日：2002-12-26
IPC分类号： H03L7/00 , G01S7/282 , G01S13/02 , G01S13/10 , H03D3/24 , H03K5/135 , H03L7/18 , H04B20060101 , H04B1/69 , H04B14/02 , H04J3/06 , H04L1/08 , H04L7/00 , H04L7/08 , H04L25/40
CPC分类号： H04B1/7183 , G01S7/282 , G01S13/0209 , G01S13/106 , H03L7/18 , H04B1/71635 , H04L1/08
摘要： A precision timing generator includes a combiner that provides a timing signal by combining a coarse timing signal and a fine timing signal derived from a phase-shifted sinusoidal signal that has a desired phase shift. The coarse timing generator generates the coarse timing signal from a clock signal and a timing command input. The fine timing generator includes a sinusoidal-signal generator that receives the clock signal and generates a sinusoidal signal. The fine timing generator also includes a phase shifter that receives the sinusoidal signal and the timing command input and shifts the phase of the sinusoidal signal based on the timing input to generate the phase shifted sinusoidal signal.
摘要翻译： 精确定时发生器包括组合器，其通过组合粗定时信号和从具有期望相移的相移正弦信号导出的精细定时信号来提供定时信号。 粗定时发生器从时钟信号和定时命令输入产生粗定时信号。 精确定时发生器包括正弦信号发生器，其接收时钟信号并产生正弦信号。 精确定时发生器还包括接收正弦信号和定时指令输入的移相器，并且基于定时输入偏移正弦信号的相位，以产生相移的正弦信号。
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18.发明授权Multi-gigabit-per-sec clock recovery apparatus and method for optical communications 有权每秒千兆比特的时钟恢复装置和光通信方法公开(公告)号：US06509801B1
公开(公告)日：2003-01-21
申请号：US09895955
申请日：2001-06-29
申请人： Binneg Y. Lao , David A. Rowe , James R. Pulver
发明人： Binneg Y. Lao , David A. Rowe , James R. Pulver
IPC分类号： H03L700
CPC分类号： H04L7/033 , H03L7/0896 , H03L7/14
摘要： Methods and apparatus for generating clock signals accurately locked to multi-gigabits-per-second data signals received over fiber optic channels are disclosed. The invention includes a phase detector for comparing a data signal and a clock signal, a one shot unit for detecting a data transition, an XOR, a filter, a main charge pump, a compensating charge pump for producing additive or compensating current, and a VCO for generating the clock signal. The phase detector includes multiple D-flip flops. The one shot unit includes a delay unit and an AND gate. The filter includes a resistor, a capacitor and a negative resistance amplifier. The main charge pump includes differential inputs, double outputs, cross-quading resistors, differential NPN input transistors, and a current source. The compensating charge pump includes differential NPN input transistors and a current source. In operation, when there is a data transition and if the clock signal and data signal are out of phase synchronization, then the compensating charge pump will enhance the operation of the main charge pump, and the VCO will speed up or slow down the clock signal depending on whether the clock signal is advanced or retarded in phase compared to the data signal. When there is no data transition, the compensating charge pump will in effect counterbalance the operation of the main charge pump, and the frequency of the clock signal will be maintained at the same level it was at the onset of the no data transition period.
摘要翻译： 公开了用于产生准确地锁定在通过光纤通道接收的每千兆比特数据信号的时钟信号的方法和装置。 本发明包括用于比较数据信号和时钟信号的相位检测器，用于检测数据转换的单触发单元，XOR，滤波器，主电荷泵，用于产生添加剂或补偿电流的补偿电荷泵，以及 VCO用于产生时钟信号。 相位检测器包括多个D触发器。 一次性单元包括延迟单元和与门。 滤波器包括电阻器，电容器和负电阻放大器。 主电荷泵包括差分输入，双输出，交叉电阻，差分NPN输入晶体管和电流源。 补偿电荷泵包括差分NPN输入晶体管和电流源。 在运行中，当存在数据转换，如果时钟信号和数据信号异相同步，则补偿电荷泵将增强主电荷泵的运行，并且VCO将加速或减慢时钟信号 取决于时钟信号与数据信号相比是高速还是延迟。 当没有数据转换时，补偿电荷泵实际上将平衡主电荷泵的运行，并且时钟信号的频率将保持在无数据转换周期开始的同一电平。
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公开(公告)号：US06421389B1
公开(公告)日：2002-07-16
申请号：US09356384
申请日：1999-07-16
IPC分类号： H04L2700
CPC分类号： H04L25/4902 , H04B1/71637 , H04B1/7183 , H04B1/719
摘要： A baseband signal converter device for an impulse radio receiver combines multiple converter circuits and an RF amplifier in a single integrated circuit package. Each converter circuit includes an integrator circuit that integrates a portion of each RF pulse during a sampling period triggered by a timing pulse generator. The integrator capacitor is isolated by a pair of Schottky diodes connected to a pair of load resistors. A current equalizer circuit equalizes the current flowing through the load resistors when the integrator is not sampling. Current steering logic transfers load current between the diodes and a constant bias circuit depending on whether a sampling pulse is present.
摘要翻译： 用于脉冲无线电接收机的基带信号转换器装置将多个转换器电路和RF放大器组合在单个集成电路封装中。 每个转换器电路包括积分器电路，其在由定时脉冲发生器触发的采样周期期间对每个RF脉冲的一部分进行积分。 积分器电容由一对连接到一对负载电阻的肖特基二极管隔离。 当积分器不采样时，电流均衡器电路均衡流过负载电阻器的电流。 电流转向逻辑根据是否存在采样脉冲，传输二极管之间的负载电流和恒定偏置电路。
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公开(公告)号：US3956140A
公开(公告)日：1976-05-11
申请号：US355153
申请日：1973-04-27
申请人： James Jang Woo Nahm , David A. Rowe
发明人： James Jang Woo Nahm , David A. Rowe
CPC分类号： C09K8/24 , Y10S507/925 , Y10S516/03
摘要： Well drilling, workover and completion fluids containing various water soluble condensation products of phenolic materials, formaldehyde and sulfite salts. Such condensation products may be further modified by including during the condensation reaction one or more of urea, melamine, salicylic acid, benzoic acid, phthalic acid, adipic acid, succinic acid, glutaric acid, maleic acid or the anhydrides of said acids. The drilling, workover or completion fluids may also contain clay-dispersants.
摘要翻译： 钻井，修井和完井液含有酚类物质，甲醛和亚硫酸盐的各种水溶性缩合产物。 可以通过在缩合反应中包含尿素，三聚氰胺，水杨酸，苯甲酸，邻苯二甲酸，己二酸，琥珀酸，戊二酸，马来酸或所述酸的酸酐中的一种或多种来包含这样的缩合产物。 钻井，修井或完井液也可能含有粘土分散剂。
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