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    • 25. 发明申请
    • Dual path attenuation system
    • 双路衰减系统
    • US20070126525A1
    • 2007-06-07
    • US11291683
    • 2005-12-01
    • Dean Nicholson
    • Dean Nicholson
    • H03H7/24H03H7/25H01P1/22
    • H03H11/24H03G1/0088H03G3/001H03H7/25
    • A dual path attenuation system includes an ALC system, a through signal path, an attenuation signal path, and a non-terminated input switch and a non-terminated output switch that alternatively couple one of the through signal path and the attenuation signal path between an input and an output. The ALC system adjusts the amplitude of an applied input signal over an adjustment range to provide an amplitude-leveled output signal. The non-terminated input switch and non-terminated output switch couple the through signal path between the input and the output when the amplitude-leveled signal has an amplitude above a designated threshold within the adjustment range, and couple the attenuation signal path between the input and the output when the amplitude-leveled signal has an amplitude that is below the designated threshold.
    • 双路衰减系统包括ALC系统,通信信号路径,衰减信号路径和非终端输入开关以及非终止输出开关,其将通信信号路径和衰减信号路径之一交替地耦合在一个 输入和输出。 ALC系统在调整范围内调整所施加的输入信号的幅度,以提供幅度均衡的输出信号。 当幅度级信号的振幅高于调节范围内的指定阈值时,非终端输入开关和非终端输出开关将输入和输出之间的通过信号路径耦合,并且在输入端与输入端之间耦合衰减信号路径 并且当幅度水平的信号具有低于指定阈值的幅度时的输出。
    • 26. 发明授权
    • Differential termination and attenuator network for a measurement probe
    • 用于测量探头的差分终端和衰减器网络
    • US07164995B2
    • 2007-01-16
    • US11051596
    • 2005-02-04
    • Ira G. PollockRichard A. Van Epps
    • Ira G. PollockRichard A. Van Epps
    • G01R15/00G01R27/28G01R1/20G06F19/00H03L5/00H01P1/22H03H7/24
    • G01R1/06766
    • A differential termination and attenuator network receives a differential input signal having a DC common mode voltage. The network circuit includes input termination resistors coupled in parallel with corresponding resistive attenuator circuits. A monitoring circuit coupled to input nodes of the network generates an output signal representative of the combination of a DC common mode voltage on the input nodes and an applied termination voltage. A control circuit receives the output signal from the monitoring circuit and the applied termination voltage and generates a scaled termination voltage and a scaled compensation voltage and drive currents. The scaled termination and compensation voltages and drive currents provide DC currents through the input termination resistances and the attenuators for nulling DC currents at the network input nodes and provides a DC common mode voltage output from the attenuators for optimizing the dynamic range of a differential measurement amplifier.
    • 差分终端和衰减器网络接收具有DC共模电压的差分输入信号。 网络电路包括与对应的电阻衰减器电路并联耦合的输入端接电阻器。 耦合到网络的输入节点的监控电路产生表示输入节点上的DC共模电压和施加的终止电压的组合的输出信号。 控制电路接收来自监控电路的输出信号和所施加的终端电压,并产生缩放的终端电压和标定的补偿电压和驱动电流。 缩放的终端和补偿电压和驱动电流通过输入终端电阻和衰减器提供直流电流,用于使网络输入节点处的直流电流归零,并提供从衰减器输出的直流共模电压,以优化差分测量放大器的动态范围 。
    • 28. 发明申请
    • Sheath wave barrier unit
    • 护套波屏障单元
    • US20050270116A1
    • 2005-12-08
    • US11095171
    • 2005-03-31
    • Martin HergtArne Reykowski
    • Martin HergtArne Reykowski
    • G01R33/36H01P1/20H01P1/202H03H7/01H03H7/24
    • H01P1/202
    • A sheath wave barrier unit for an outer shielding of a coaxial cable that also has an inner conductor, has two sheath wave barriers that damp or suppress sheath waves that are induced in two series conductor segments of the outer shielding. Each sheath wave barrier forms a resonant oscillating circuit at a predetermined high frequency, with the high frequency being the same for both sheath wave barriers. The sheath wave barrier unit has a shielding device with at least one radial shield by means of which the sheath wave barriers are decoupled from one another. The sheath wave barriers and the shielding device are arranged on a common carrier.
    • 同时具有内导体的同轴电缆的外屏蔽的护套波阻挡单元具有两个护套波阻挡层,其阻止或抑制在外屏蔽的两个串联导体段中感应的鞘波。 每个护套波屏障以预定的高频率形成谐振振荡电路,两个鞘波屏障的高频率相同。 鞘波屏障单元具有屏蔽装置,该屏蔽装置具有至少一个径向屏蔽件,借助该屏蔽装置,护套波纹屏障彼此分离。 鞘波屏障和屏蔽装置布置在公共载体上。
    • 30. 发明授权
    • Return path attenuation filter
    • 返回路径衰减滤波器
    • US5999796A
    • 1999-12-07
    • US67305
    • 1998-04-27
    • Andrew F. TresnessMartin L. Zelenz
    • Andrew F. TresnessMartin L. Zelenz
    • H03H7/06H03H7/07H03H7/075H03H7/24H03H7/46H04H60/96H04N7/10H04N7/14H04N7/173H04H1/00
    • H03H7/461H04H60/96H04N7/102H04N7/17309
    • The present invention is a passive filter for controlling the return path loss in a communication system having a forward path and return path. The filter comprises first and second terminals, a passive filter network, and a compensation circuit. The passive filter network is coupled to the first and second terminals and to ground. The filter network has a first passband which passes signals in the forward path and a second passband which passes signals in the return path. The filter network includes a passive attenuator network which attenuates signals in the return path by a predetermined amount as the signals pass through the second passband. The compensation circuit is coupled to the passive filter network, and is configured to compensate for expected perturbations in the frequency response of the second passband of the filter network.
    • 本发明是一种用于控制具有前向路径和返回路径的通信系统中的返回路径损耗的无源滤波器。 滤波器包括第一和第二端子,无源滤波器网络和补偿电路。 无源滤波器网络耦合到第一和第二端子并接地。 滤波器网络具有通过正向路径中的信号的第一通带和通过返回路径中的信号的第二通带。 滤波器网络包括无源衰减器网络,其在信号通过第二通带时将返回路径中的信号衰减预定量。 补偿电路耦合到无源滤波器网络,并且被配置为补偿滤波器网络的第二通带的频率响应中的预期扰动。