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1. 发明授权

US06285253B1 Systems, methods, and circuits for reducing HUM modulation in amplifiers 有权
标题翻译：用于减小放大器中HUM调制的系统，方法和电路
公开(公告)号：US06285253B1
公开(公告)日：2001-09-04
申请号：US09473850
申请日：1999-12-28
申请人： Jiening Ao , Steven E. Blashewski , John W. Brickell , Pieter G. Ibelings
发明人： Jiening Ao , Steven E. Blashewski , John W. Brickell , Pieter G. Ibelings
IPC分类号： H03F132
CPC分类号： H03F1/30
摘要： Voltage-induced hum modulation in an amplifier can be caused when shunt capacitors begin to saturate and enter their non-linear region of operation. Bypass coils within the amplifier are magnetically coupled to the shunt capacitors and exacerbate hum modulation by coupling additional energy to the shunt capacitors. By introducing a resistance (R) in series with the shunt capacitors (C), energy that would normally be stored in the shunt capacitors (C) is dissipated. As a result, the shunt capacitors (C) remain in their linear region of operation more often and present a more stable impedance. The resistor (R) is especially beneficial at reducing hum modulation at the resonant frequency of the shunt capacitors (C), when the transfer of energy from the bypass coils (L) is at a maximum.
摘要翻译：当并联电容器开始饱和并进入其非线性运行区域时，可能会导致放大器中的电压诱导的嗡嗡声调制。放大器内的旁路线圈磁耦合到并联电容器，并通过将额外的能量耦合到并联电容器来加剧嗡嗡声调制。通过引入与并联电容器（C）串联的电阻（R），通常将存储在并联电容器（C）中的能量被消散。结果，并联电容器（C）更经常地保持在它们的线性操作区域中并呈现更稳定的阻抗。当来自旁路线圈（L）的能量传递最大时，电阻器（R）对于在并联电容器（C）的谐振频率处的哼声调制是特别有益的。

2. 发明授权

US06242982B1 Amplifier with self setting automatic gain control circuit 有权
标题翻译：放大器具有自动设置自动增益控制电路
公开(公告)号：US06242982B1
公开(公告)日：2001-06-05
申请号：US09438014
申请日：1999-11-10
申请人： Pieter G. Ibelings , Herman A. Kruse
发明人： Pieter G. Ibelings , Herman A. Kruse
IPC分类号： H03G310
CPC分类号： H03G3/3042
摘要： An amplifier (125) having automatic gain control (AGC) includes a gain stage (220), having a variable amplifier (215), for amplifying a signal received by the amplifier (125). The amplifier (125) also includes an AGC circuit (228) that adjusts amplification of the gain stage (220) and that includes a manual switch (246) having first and second switch settings. Sequential operation from the first switch setting to the second switch setting causes the AGC circuit (228) to automatically and correctly set the gain of the amplifier (125) without further human intervention.
摘要翻译：具有自动增益控制（AGC）的放大器（125）包括具有可变放大器（215）的增益级（220），用于放大由放大器（125）接收的信号。放大器（125）还包括AGC电路（228），其调整增益级（220）的放大率，并且包括具有第一和第二开关设置的手动开关（246）。从第一开关设置到第二开关设置的顺序操作使AGC电路（228）自动且正确地设置放大器（125）的增益，而无需进一步的人为干预。

3. 发明申请

US20080310846A1 FREQUENCY MODULATED BURST MODE TRANSMITTER 审中-公开
标题翻译：频率调制脉冲模式发射机
公开(公告)号：US20080310846A1
公开(公告)日：2008-12-18
申请号：US11762291
申请日：2007-06-13
申请人： Lamar E. West, JR. , Pieter G. Ibelings
发明人： Lamar E. West, JR. , Pieter G. Ibelings
IPC分类号： H04B10/00
CPC分类号： H04B10/548 , H04B10/25751 , H04B10/504 , H04N7/22
摘要： The present invention is directed towards a frequency modulated burst mode optical transmitter and systems and methods related thereto. Reverse electrical signals are used to frequency modulate a carrier signal. A carrier detect circuit checks for the presence of a subcarrier signal in received reverse electrical signals. When a subcarrier signal is detected, a laser is turned on and the frequency modulated carrier signal is used to intensity modulate the laser to provide an optical signal. In the absence of a subcarrier signal, the laser is turned off and no optical signals are transmitted. By operating in a burst mode, resources are conserved as optical signals are transmitted only when content-carrying reverse electrical signals are received. A delay circuit may be included to prevent loss of any signal information
摘要翻译：本发明涉及一种调频突发模式光发射机及其相关的系统和方法。反向电信号用于对载波信号进行频率调制。载波检测电路检查接收到的反向电信号中是否存在子载波信号。当检测到副载波信号时，激光器被接通，并且使用调频载波信号对激光器进行强度调制以提供光信号。在不存在副载波信号的情况下，激光器被关闭，并且不发送光信号。通过以突发模式操作，仅当接收到携带内容的反向电信号时才发送光信号，从而节省资源。可以包括延迟电路以防止任何信号信息的丢失

4. 依法登记的发明

USH1858H Radio frequency sensed, switched reverse path tap 失效
标题翻译：无线电频率感测，开关反向路径抽头
公开(公告)号：USH1858H
公开(公告)日：2000-09-05
申请号：US105407
申请日：1998-06-26
申请人： Pieter G. Ibelings
发明人： Pieter G. Ibelings
IPC分类号： H04N7/10 , H04N7/173 , H04N21/61
CPC分类号： H04N21/6168 , H04N7/102 , H04N7/17309
摘要： A bidirectional communications system is provided for sending signals along a cable in a forward path from a central location to a plurality of remote receiver locations and for sending return signals along the same cable in a reverse path from the remote receiver locations to the central location. The communications system includes a plurality of taps placed along the cable for splitting the signals to be sent to the remote receiver locations, and a radio frequency sensed switch placed at each of the plurality of taps for sensing the return signals so as to turn on the reverse path when the return signals are present and to turn off the reverse path when no return signals are present.
摘要翻译：提供双向通信系统用于沿着从中心位置到多个远程接收器位置的前向路径中的电缆发送信号，并且用于沿着从远程接收器位置到中心位置的反向路径中的相同电缆发送返回信号。通信系统包括沿着电缆放置的多个抽头，用于分离要发送到远程接收器位置的信号，以及放置在多个抽头中的每个抽头上的射频感测开关，用于感测返回信号，以便接通返回信号存在时的反向路径，并且当没有返回信号存在时关闭反向路径。

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