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1. 发明专利

DE10039162A1 Adaptive signal pre-correction for combination television signal circuit samples second signal and combined signal for controlling pre-correction of first signal 未知
公开(公告)号：DE10039162A1
公开(公告)日：2001-03-08
申请号：DE10039162
申请日：2000-08-10
申请人： THOMCAST COMMUNICATIONS INC
发明人： FRIES HENRY
IPC分类号： H04N5/38
摘要： The pre-correction circuit has an amplifier (12) for amplifying a first signal before it is combined with a second signal, with sampling of the second signal and the combined signal at the output of the signal combiner (14), for controlling an adaptive pre-correction stage (10) in the path of the first signal infront of the amplifier. An Independent claim for a signal pre-correction method is also included.

2. 发明专利

AU5519701A Doubling the power handling capacity of a circulator-based isolator using hybrids 未知
公开(公告)号：AU5519701A
公开(公告)日：2001-10-08
申请号：AU5519701
申请日：2001-03-28
申请人： THOMCAST COMMUNICATIONS INC
发明人： FRIES HENRY J
IPC分类号： H01P1/38 , H01P5/16 , H01P1/36
摘要： An apparatus for doubling the amount of power that can be safely applied to a circulator-based isolator, which is made up of an input hybrid which receives an RF signal and outputs two divided RF signals, a Y-junction circulator that receives one of the divided RF signals at one of the circulator ports and outputs it at another circulator port, an output hybrid which receives the two divided RF signals, combines them, and sends them on, the output hybrid simultaneously receiving a returned signal, dividing it, and outputting two divided returned signals, one divided returned signal going to the circulator and the other divided returned signal going directly to the input hybrid, a phase retarding circuit which takes the half of the divided returned signal that went back to the circulator and retards its phase by 180 degrees and sends it back to the circulator, where it goes to the input hybrid as well, to be recombined with the other half of the returned signal and attenuated.

3. 发明专利

AU4770301A Oil cooled multistage depressed collector high power amplifier 未知
公开(公告)号：AU4770301A
公开(公告)日：2001-10-15
申请号：AU4770301
申请日：2001-03-23
申请人： THOMCAST COMMUNICATIONS INC
发明人： STEFANIK FRED M , SEE ALVIN M
IPC分类号： H01L23/473 , F28F7/00 , F28D15/00 , H01B17/54 , H01L23/34 , H05K7/20

4. 发明专利

DE10011658A1 未知
公开(公告)号：DE10011658A1
公开(公告)日：2000-09-14
申请号：DE10011658
申请日：2000-03-10
申请人： THOMCAST COMMUNICATIONS INC
发明人： JENKINS BRETT
IPC分类号： G01R31/30 , H03F1/32 , H03F1/34 , H04N5/52
摘要： A method and system for correcting errors introduced by a non-linear amplifying device to an input signal inputted to the device. A Look-Up Table (LUT) stores error correction values indexed against input signal amplitude values and input signal frequency values. The amplitude and frequency of an input signal to be inputted to the non-linear amplifying device are measured, and stored error correction values corresponding to the measured amplitude and frequency are retrieved from the LUT and used to modify the input signal accordingly.

5. 发明授权

US6104239A Method for correcting frequency-varying nonlinear errors and digital correction circuit implementing same 有权
标题翻译：用于校正频率变化非线性误差的方法和实现其的数字校正电路
公开(公告)号：US6104239A
公开(公告)日：2000-08-15
申请号：US267113
申请日：1999-03-12
申请人： Brett Jenkins
发明人： Brett Jenkins
IPC分类号： G01R31/30 , H03F1/32 , G01R19/00
CPC分类号： G01R31/3016 , H03F1/3247
摘要： A method and system for correcting errors introduced by a non-linear amplifying device to an input signal inputted to the device. A Look-Up Table (LUT) stores error correction values indexed against input signal amplitude values and input signal frequency values. The amplitude and frequency of an input signal to be inputted to the non-linear amplifying device are measured, and stored error correction values corresponding to the measured amplitude and frequency are retrieved from the LUT and used to modify the input signal accordingly.
摘要翻译：一种用于将由非线性放大装置引入的误差校正到输入到该装置的输入信号的方法和系统。查找表（LUT）存储针对输入信号幅度值和输入信号频率值索引的纠错值。测量要输入到非线性放大装置的输入信号的幅度和频率，并且从LUT中检索对应于测量的幅度和频率的存储的纠错值，并用于相应地修改输入信号。

6. 发明授权

US5959508A Electromagnetic wave combining device and television broadcast transmission system using same 失效
标题翻译：电磁波组合装置和电视广播传输系统使用相同
公开(公告)号：US5959508A
公开(公告)日：1999-09-28
申请号：US905160
申请日：1997-08-01
申请人： Mark Aitken
发明人： Mark Aitken
IPC分类号： H01P1/161 , H01P1/213
CPC分类号： H01P1/161
摘要： Apparatus is provided for allowing two high frequency signals from two separate sources to be combined for simultaneous propagation through a common propagation medium such as an antenna or transmission line, while maintaining isolation between the signals at the inputs of the sources and preventing unwanted interference and resulting distortion. The apparatus includes an orthogonal mode converger which receives two combined electromagnetic energy waves having orthogonally disposed electric field vectors and incrementally converges them to the same direction through a varying cross-section waveguide structure.
摘要翻译：提供了用于允许来自两个单独源的两个高频信号被组合用于通过诸如天线或传输线的公共传播介质同时传播的装置，同时保持在源的输入处的信号之间的隔离并且防止不期望的干扰并导致失真。该装置包括正交模式收敛器，其接收具有正交设置的电场矢量的两个组合的电磁能量波，并通过变化的横截面波导结构将它们逐渐收敛到相同的方向。

7. 发明授权

US6078222A Controller-based radio frequency amplifier module and method 失效
公开(公告)号：US6078222A
公开(公告)日：2000-06-20
申请号：US887940
申请日：1997-07-03
申请人： Clifford Harris , Carl Ungvarsky , Paulo Correa
发明人： Clifford Harris , Carl Ungvarsky , Paulo Correa
IPC分类号： H01P1/213 , H01Q3/26 , H03F1/52 , H03F3/60 , H03G1/00 , H03G3/30 , H04B7/005 , H04L1/22 , H03F3/68
CPC分类号： H04W52/52 , H01P1/2138 , H01Q3/267 , H03F1/526 , H03F3/602 , H03G1/0088 , H03G3/3042 , H04L1/22 , H03F2200/294 , H03F2200/372
摘要： A controller-based radio frequency amplifier method and module are employed in a modular transmission system in which respective of the controller-based radio frequency amplifier modules amplify a portion of a signal that is input into the system. Each amplifier module includes an amplifier submodule have a plurality of discrete amplifiers arranged in an amplifier chain, a processor submodule is configured to control a level of the amplified output signal that is output from each amplifier module, a power supply module, and an enclosure. The processor submodule is configured to control the discrete amplifiers in the amplifier submodule such that the module may be removed or added to the system without damaging the power amplifier module or other system components.

8. 发明申请

US20030023884A1 Apparatus, method and computer program product for monitoring AC line current through the step start resistors of a high voltage power supply 失效
标题翻译：用于通过高压电源的步进启动电阻监测交流线路电流的装置，方法和计算机程序产品
公开(公告)号：US20030023884A1
公开(公告)日：2003-01-30
申请号：US09912493
申请日：2001-07-26
申请人： THOMCAST COMMUNICATIONS, INC.
发明人： Alvin B. See , Paulo Correa
IPC分类号： G06F001/26
CPC分类号： G06F1/30
摘要： A circuit to monitor ac line current through resistors employed to provide a nullstep startnull in a power supply, including means to monitor the current flowing through the step start resistors, comprising a peak detector, a sample and hold circuit, an analog to digital convertor and a microprocessor. The output of the current monitoring circuit may be employed to abort starting if abnormalities are sensed. The circuit may also be used to identify when the step start resistors need longer cooling time, and to continuously monitor current at times other than during starting. A timing circuit is also incorporated, which senses zero crossings of the voltage input to the power supply, so as to control the timing of the current monitoring circuit. The discrete circuits employed may be replaced by either a digital signal processor integrated circuit or a general-purpose computer implementing the same steps in a suitable algorithm.
摘要翻译：一种用于监视通过电阻器的交流线路电流的电路，用于在电源中提供“步进起动”，包括监测流过步进启动电阻器的电流的装置，包括峰值检测器，采样和保持电路，模数转换器转换器和微处理器，如果检测到异常，则可以使用电流监视电路的输出中止启动，该电路还可用于识别步进启动电阻何时需要更长的冷却时间，并且在不同于在启动期间，还结合了定时电路，其感测输入到电源的电压的过零点，以便控制电流监视电路的定时。所采用的分立电路可以由数字信号处理器集成电路或在适当的算法中实现相同步骤的通用计算机。

9. 发明授权

US6055418A Computer program product configured to control modular transmission system components 失效
标题翻译：计算机程序产品配置为控制模块化传输系统组件
公开(公告)号：US6055418A
公开(公告)日：2000-04-25
申请号：US888099
申请日：1997-07-03
申请人： Clifford Harris , Carl Ungvarsky , Paulo Correa
发明人： Clifford Harris , Carl Ungvarsky , Paulo Correa
IPC分类号： H01P1/213 , H01Q3/26 , H03F1/52 , H03F3/60 , H03G1/00 , H03G3/30 , H04B7/005 , H04L1/22 , H04M1/02
CPC分类号： H04W52/52 , H01P1/2138 , H01Q3/267 , H03F1/526 , H03F3/602 , H03G1/0088 , H03G3/3042 , H04L1/22 , H03F2200/294 , H03F2200/372
摘要： A computer program product is configured to control a modular transmission system having a control processor and at least N power amplifier modules, each having a controller submodule, wherein the system receives an input signal which may be a single carrier or multiple carriers. The signal is passed to a one-by-N divider which divides the signal N ways. Each of the N divided signals are independently amplified by the power amplifier (PA) modules "slices" (i.e., PA modules) that includes an RF amplifier module, a microcontroller module, and a power supply module, all of which are tightly coupled via a plurality of signal, power, control, and status connections. Each the PA slices amplifies its respective input signal and outputs a respective radio frequency output signal at a predetermined power level as controlled by the microcontrol module, the driver, and the system controller, or a network manager via a system input/output interface. The output coupler provides power coupling and status monitoring via feedback lines to support control at a module-level, a system-level, and a network-level.
摘要翻译：计算机程序产品被配置为控制具有控制处理器和至少N个功率放大器模块的模块化传输系统，每个功率放大器模块具有控制器子模块，其中系统接收可以是单载波或多个载波的输入信号。该信号被传递到一个逐个N分频器，其分频信号N路。 N个分频信号中的每一个由包括RF放大器模块，微控制器模块和电源模块的功率放大器（PA）模块“片”（即，PA模块）独立放大，所有这些都通过多个信号，电源，控制和状态连接。每个PA片放大其相应的输入信号，并且经由系统输入/输出接口由微控制器模块，驱动器和系统控制器或网络管理器控制的预定功率电平输出相应的射频输出信号。输出耦合器通过反馈线提供电源耦合和状态监控，以支持模块级，系统级和网络级的控制。

10. 发明授权

US6023612A Modular transmission system and method 失效
标题翻译：模块化传输系统及方法
公开(公告)号：US6023612A
公开(公告)日：2000-02-08
申请号：US887939
申请日：1997-07-03
申请人： Clifford Harris , Carl Ungvarsky , Paulo Correa
发明人： Clifford Harris , Carl Ungvarsky , Paulo Correa
IPC分类号： H01P1/213 , H01Q3/26 , H03F1/52 , H03F3/60 , H03G1/00 , H03G3/30 , H04B7/005 , H04L1/22 , H01Q11/12
CPC分类号： H04W52/52 , H01P1/2138 , H01Q3/267 , H03F1/526 , H03F3/602 , H03G1/0088 , H03G3/3042 , H04L1/22 , H03F2200/294 , H03F2200/372
摘要： A modular broadband transmission system and method include an input signal connector that receives an input signal which is then divided into N parts and amplified with an amplifier have N power amplifier modules. Outputs of the N power amplifier modules are passed through transmission lines and to a radial combiner that combines the outputs. The radial combiner, transmission lines and power amplifier modules are configured such that if one of the power amplifier modules fails, the other power amplifier modules may still operate acceptable well, with minimal impact on total output power. An output of the amplifier is provided to a coupler that measures a power level of the output signal and feeds the measured power level back to a controller where the controller adjust an overall output power based on the number of the power amplifier modules that are functioning properly. Each of the power amplifier modules have a processor such that respective of the power amplifier modules may be taken off-line, and replaced while the other power amplifier modules continue to operate in a transmit mode of operation. The modular broadband transmission system and method may conveniently be used as either a broadband booster for amplifying a plurality of input signals, or a head and transmitter configured to amplify one or more different input signals.
摘要翻译：模块化宽带传输系统和方法包括接收输入信号的输入信号连接器，其然后被分成N个部分并且用放大器放大器具有N个功率放大器模块。 N个功率放大器模块的输出通过传输线路和组合输出的径向组合器。径向组合器，传输线路和功率放大器模块被配置为使得如果功率放大器模块之一发生故障，则其他功率放大器模块仍然可以良好地操作，对总输出功率的影响最小。放大器的输出被提供给耦合器，该耦合器测量输出信号的功率电平，并且将所测量的功率电平反馈给控制器，其中控制器基于正常运行的功率放大器模块的数量来调整总体输出功率。每个功率放大器模块具有处理器，使得相应的功率放大器模块可以脱机，并且在其它功率放大器模块继续以传输操作模式工作时被替换。模块化宽带传输系统和方法可以方便地用作用于放大多个输入信号的宽带增强器，或被配置为放大一个或多个不同输入信号的头和发射机。

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