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1. 发明授权

US5390348A System for tracking and correcting drift and dispersion in satellite transmission signals 失效
标题翻译：用于跟踪和校正卫星传输信号漂移和色散的系统
公开(公告)号：US5390348A
公开(公告)日：1995-02-14
申请号：US835253
申请日：1992-02-12
申请人： Gregory A. Magin , John W. G. McMullen
发明人： Gregory A. Magin , John W. G. McMullen
IPC分类号： H04B7/208 , H04B1/10
CPC分类号： H04B7/208
摘要： A system for tracking and correcting drift and dispersion of carrier frequencies in a transmitted signal which includes one or more carrier frequencies and a pilot frequency. The system includes one or more carrier tuners, each for receiving the transmitted signal and for deriving from the received signal and IF carrier signal representing a respective carrier frequency, a mixer for mixing the IF carrier signal and a local oscillator signal to produce a resultant IF information signal, and a demodulator for demodulating the resultant IF information signal to recover the transmitted information. The system also includes a pilot tuner for receiving a transmitted signal, the pilot tuner deriving from the received signal an IF pilot signal representing the pilot frequency, a pilot mixer for mixing the IF pilot signal and the local oscillator signal to produce a resultant pilot signal, a local oscillator responsive to a control signal level for developing a local oscillator signal having a frequency corresponding to the control signal level and for supplying the local oscillator signal to the carrier mixers and pilot mixer to compensate for any drift or dispersion of frequency of the IF carrier signals and IF pilot signal, and a frequency discriminator for detecting frequency drift and dispersion of the IF pilot signal from a predetermined center frequency and for supplying to the local oscillator a control signal whose level identifies the drift and/or dispersion.
摘要翻译：一种用于跟踪和校正载波频率在包括一个或多个载波频率和导频的发射信号中的漂移和色散的系统。该系统包括一个或多个载波调谐器，每个载波调谐器用于接收所发送的信号，并用于从接收到的信号和IF载波信号导出表示相应的载波频率，混合器，用于混合IF载波信号和本地振荡器信号，以产生所得的IF 信息信号和解调器，用于解调所得到的IF信息信号以恢复发送的信息。该系统还包括用于接收发送信号的导频调谐器，从接收信号导出代表导频的IF导频信号的导频调谐器，用于混合IF导频信号和本地振荡器信号的导频混频器，以产生合成导频信号响应于控制信号电平的本地振荡器，用于开发具有与控制信号电平相对应的频率的本地振荡器信号，并且用于将本地振荡器信号提供给载波混频器和导频混频器以补偿频率的任何漂移或色散 IF载波信号和IF导频信号，以及用于检测来自预定中心频率的IF导频信号的频率漂移和色散并用于向本地振荡器提供电平识别漂移和/或色散的控制信号的频率鉴别器。

2. 发明授权

US08674539B1 Powerline communication power supply and modem interface mechanism 有权
标题翻译：电力线通信电源和调制解调器接口机制
公开(公告)号：US08674539B1
公开(公告)日：2014-03-18
申请号：US13115700
申请日：2011-05-25
申请人： Gregory A. Magin , Celestino A. Corral
发明人： Gregory A. Magin , Celestino A. Corral
IPC分类号： H02J1/00 , H02J3/02 , H04B3/54
CPC分类号： H02J13/0044 , H02J13/0048 , H04B3/54 , H04B3/542 , H04B3/56 , H04B2203/542 , Y02E60/783 , Y02E60/7892 , Y04S40/123 , Y04S40/146
摘要： Functionality of a powerline communication (PLC) power supply and modem interface can be implemented using a power supply processing unit and a PLC modem unit that can be coupled together using standard, two-wire cabling. The power supply processing unit can generate a DC power signal and a zero cross signal based on an AC powerline signal received via a PLC network. The power supply processing unit can modulate the zero cross signal onto the DC power signal. The power supply processing unit can then generate a composite PLC signal comprising a PLC signal (extracted from the AC powerline signal) and the DC power signal modulated with the zero cross signal. The PLC modem unit can extract the PLC signal, the DC power signal, and the zero cross signal from the composite PLC signal, and then can process the PLC signal based on information associated with the zero cross signal.
摘要翻译：电力线通信（PLC）电源和调制解调器接口的功能可以使用电源处理单元和PLC调制解调器单元实现，该调制解调器单元可以使用标准的双线电缆耦合在一起。电源处理单元可以基于经由PLC网络接收的AC电力线信号来生成直流电力信号和零交叉信号。电源处理单元可以将零交叉信号调制到直流电源信号上。电源处理单元然后可以生成包括PLC信号（从AC电力线信号提取）和用零交叉信号调制的DC电力信号的复合PLC信号。 PLC调制解调器单元可以从复合PLC信号中提取PLC信号，直流电源信号和零交叉信号，然后根据与零交叉信号相关的信息处理PLC信号。

3. 发明授权

US08520696B1 Terminal selection diversity for powerline communications 有权
标题翻译：电力线通信终端选择多样性
公开(公告)号：US08520696B1
公开(公告)日：2013-08-27
申请号：US12913414
申请日：2010-10-27
申请人： Celestino A. Corral , Gregory A. Magin , Stanley J. Kostoff, II , John Chappel , Ehab Tahir , Syed Adil Hussain , Wayne Daniel , William E. Earnshaw
发明人： Celestino A. Corral , Gregory A. Magin , Stanley J. Kostoff, II , John Chappel , Ehab Tahir , Syed Adil Hussain , Wayne Daniel , William E. Earnshaw
IPC分类号： H04L12/66
CPC分类号： H04B3/54 , H04B2203/545 , H04B2203/5495
摘要： Powerline communication networks can be subject to burst interference resulting in loss of throughput and data corruption. A transmitting network device and a receiving network device of a powerline communication network can be configured to select a best performing powerline terminal coupling configuration for powerline communications. The transmitting network device can determine performance measurements associated with each of a plurality of powerline communication channels. The transmitting network device can select a best performing powerline communication channel based on the performance measurements, and can provide an indication of the best performing powerline communication channel to the receiving network device. The transmitting and the receiving network devices can each configure their respective terminal connections to switch to the best performing powerline communication channel. Subsequent communications between the transmitting and the receiving network devices can be initiated via the best performing powerline communication channel.
摘要翻译：电力线通信网络可能遭受突发干扰，导致吞吐量和数据损坏的丢失。电力线通信网络的发送网络设备和接收网络设备可以被配置为选择用于电力线通信的最佳执行电力线终端耦合配置。发射网络设备可以确定与多个电力线通信信道中的每一个相关联的性能测量。发射网络设备可以基于性能测量来选择最佳执行的电力线通信信道，并且可以向接收网络设备提供最佳执行电力线通信信道的指示。发送和接收网络设备可以各自配置其各自的终端连接以切换到最佳执行电力线通信信道。发射和接收网络设备之间的后续通信可以通过最佳执行的电力线通信信道来启动。

4. 发明授权

US4636736A Variable phase signal demodulator 失效
标题翻译：可变相位信号解调器
公开(公告)号：US4636736A
公开(公告)日：1987-01-13
申请号：US634642
申请日：1984-07-26
申请人： Donald J. Woodworth , Gregory A. Magin
发明人： Donald J. Woodworth , Gregory A. Magin
IPC分类号： H03L7/12 , H03D1/04
CPC分类号： H03L7/12 , Y10S331/02
摘要： A dual conversion variable bandwidth telemetry receiver employs a phase locked loop which controls the second local oscillator to maintain lock on the carrier frequency; the phase locked loop employing a loop filter with a variable time constant integrator, the time constant of which can be varied as a function of receiver bandwidth and the integrator with its associated capacitor and resistor banks being employed in a sweep, i.e. search, oscillator circuit enabled when the carrier signal is lost. A coherent double-balanced mixer is employed to detect carrier lock and if lock is lost but the carrier is still detected, a rapid response anti-sideband circuit in the phase detector of the phase locked loop is employed to suppress the sidebands and greatly increase the probability of relocking on the carrier. A synchronous AM detector employs quadrature IF and reference signals at the same frequency to produce a dc signal when phase lock occurs; the signal falling rapidly upon loss of lock. The synchronous AM detector employs a variable time constant integrator for eliminating noise above a low frequency to accommodate carrier fading, said integrator being located in an AGC circuit of an amplifier feeding a balanced mixer to hold the IF at a constant level, thus permitting detection of carrier signals at a carrier to noise ratio as low as a -20 dB. The AM detector also produces a substantially exact reproduction of the AM signal for use elsewhere in the receiver.
摘要翻译：双转换可变带宽遥测接收机采用锁相环，其控制第二本地振荡器以保持对载波频率的锁定; 锁相环采用具有可变时间常数积分器的环路滤波器，其时间常数可以作为接收器带宽的函数而变化，并且具有其相关联的电容器和电阻器组的积分器被用于扫描，即搜索振荡器电路载波信号丢失时使能。采用相干双平衡混频器来检测载波锁定，并且如果锁定丢失但载波仍被检测到，则使用锁相环的相位检测器中的快速响应反侧带电路来抑制边带并大大增加在载体上重新锁定的概率。同步AM检测器在相位锁定时采用相同频率的正交IF和参考信号产生直流信号; 失去锁定后信号迅速下降。同步AM检测器采用可变时间常数积分器，用于消除低频以上的噪声以适应载波衰落，所述积分器位于馈送平衡混频器的放大器的AGC电路中，以将IF保持在恒定电平，从而允许检测载波信号的载噪比低至-20 dB。 AM检测器还产生AM信号的基本准确的再现，以便在接收机中的其他地方使用。

5. 发明授权

US4990924A Satellite locating system 失效
标题翻译：卫星定位系统
公开(公告)号：US4990924A
公开(公告)日：1991-02-05
申请号：US382226
申请日：1989-07-20
申请人： John W. G. McMullen , Gregory A. Magin
发明人： John W. G. McMullen , Gregory A. Magin
IPC分类号： G01S5/02 , G01S19/48 , H01Q3/00 , H04H40/90
CPC分类号： H04H40/90 , G01S5/02 , H01Q3/005
摘要： A satellite locating system for use in a satellite communication system having a transmitting station in which radio signals with signal identification data is transmitted via a satellite to a receiving station. The receiving station includes an antenna for receiving radio signals relayed by the satellite, a detector circuit located near the antenna for detecting the received signals, a signal processing circuit located remotely from the antenna for processing signals received from the detector circuit, a power supply for producing electrical power, a cable for carrying the power from the power supply to the detector circuit, a power supply for producing electrical power, a cable for carrying the power from the supply to the detector circuit and for carrying received radio signals from the detector circuit to the signal processing circuit, a modulator for causing the voltage level of the output power from the power supply to fluctuate in response to a first control signal and to increase or decrease in response to the level of a second control signal, and an energy level detector couplable to the processing circuit for producing a signal which indicates the energy level of the received radio signals. Also included is a microprocessor coupled to the signal processing circuit and the energy level detector for processing received radio signals and the signal identification data, and for supplying the first control signal to the modulator when the correct signal identification data is received and for supplying the second control signal to the modulator at a level corresponding to the energy level of the received radio signals.
摘要翻译：一种卫星定位系统，用于具有发射台的卫星通信系统，其中具有信号识别数据的无线电信号经由卫星发射到接收站。接收站包括用于接收由卫星中继的无线电信号的天线，位于天线附近用于检测接收信号的检测器电路;远离天线的信号处理电路，用于处理从检测器电路接收的信号;电源，产生电力，用于将电力从电源传送到检测器电路的电缆，用于产生电力的电源，用于将电力从电源传送到检测器电路并用于承载来自检测器电路的接收的无线电信号的电缆信号处理电路，用于使得来自电源的输出功率的电压电平响应于第一控制信号波动并且响应于第二控制信号的电平而增加或减小的调制器和能级检测器可耦合到处理电路，用于产生指示所接收的无线电的能级的信号点燃还包括耦合到信号处理电路和能级检测器的微处理器，用于处理所接收的无线电信号和信号识别数据，并且用于当接收到正确的信号识别数据时将第一控制信号提供给调制器，以与所接收的无线电信号的能级对应的电平将调制信号控制到调制器。

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