公开(公告)号：US08624658B1

公开(公告)日：2014-01-07

申请号：US13561529

申请日：2012-07-30

申请人： Theron L. Jones ,  Richard D. Davis ,  James Imbornone ,  Xuejin Wang

发明人： Theron L. Jones ,  Richard D. Davis ,  James Imbornone ,  Xuejin Wang

IPC分类号： G01V3/02

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D2200/0023 ,  H03D2200/0043

摘要： A frequency mixer having parallel mixer cores is described that is configured to heterodyne a signal. In an implementation, the frequency mixer includes a first mixer core and a second mixer core. A first balun is connected to the first mixer core and configured to furnish a LO signal occurring in a first range of frequencies to the first mixer core. The mixer includes a second balun coupled to the second mixer core, and the second balun is configured to furnish a LO signal occurring in a second range of frequencies during a second time interval. The mixer includes a first biasing voltage source that is center tapped to the first balun and a second biasing voltage source is center tapped to the second balun to further prevent operation of the at least substantially non-operational mixer core.

摘要翻译： 描述了具有并行混频器核的混频器，其被配置为外差信号。 在一个实现中，混频器包括第一混频器核心和第二混频器核心。 第一平衡 - 不平衡转换器连接到第一混频器核心并且被配置为向第一混频器核心提供在第一频率范围内出现的LO信号。 混频器包括耦合到第二混频器核心的第二平衡 - 不平衡变压器，并且第二平衡 - 不平衡变压器被配置为在第二时间间隔期间提供在第二频率范围内出现的LO信号。 混合器包括中心抽头到第一平衡 - 不平衡转换器的第一偏置电压源，并且第二偏压电压源被中心抽头到第二平衡 - 不平衡变换器，以进一步防止至少基本上不可操作的混频器核心的操作。

公开(公告)号：US09002308B1

公开(公告)日：2015-04-07

申请号：US13488267

申请日：2012-06-04

申请人： Andrew G. Zocher ,  Richard D. Davis ,  Theron L. Jones ,  Luiz A. Razera, Jr. ,  Robert R. Rotzoll

发明人： Andrew G. Zocher ,  Richard D. Davis ,  Theron L. Jones ,  Luiz A. Razera, Jr. ,  Robert R. Rotzoll

IPC分类号： H04B1/06 ,  H04B7/00 ,  H04B10/60 ,  H04B1/62

CPC分类号： H04N13/398 ,  H03G3/3078 ,  H04B1/62 ,  H04N13/167 ,  H04N13/172 ,  H04N13/332 ,  H04N13/341 ,  H04N2213/008

摘要： A system is disclosed that may include an Automatic Gain Control (AGC) module configured to automatically adjust the gain of a receiver, which is configured to receive a signal. The signal includes a number of commands, which have a characteristic command length and a characteristic command interval. The command length may have a substantially shorter duration than the command interval. The system may also include a slicer configured to interface to a command processor. The system includes a command processor communicatively coupled with the AGC module and/or the slicer for providing a notification to the AGC module and/or the slicer associated with the ends of the commands. The AGC module is configured to adjust the gain of the receiver and the slicer threshold voltage is updated when the notification is received from the command processor.

摘要翻译： 公开了一种可以包括自动增益控制（AGC）模块的系统，该自动增益控制（AGC）模块被配置为自动调整被配置为接收信号的接收机的增益。 信号包括多个具有特征指令长度和特征指令间隔的命令。 命令长度可以具有比命令间隔更短的持续时间。 系统还可以包括配置成与命令处理器接口的限幅器。 该系统包括与AGC模块和/或限幅器通信耦合的命令处理器，用于向AGC模块和/或与命令的末端相关联的限幅器提供通知。 AGC模块被配置为调整接收机的增益，并且当从命令处理器接收到通知时，限幅器阈值电压被更新。

公开(公告)号：US08411799B1

公开(公告)日：2013-04-02

申请号：US12618541

申请日：2009-11-13

申请人： Theron L. Jones ,  Andrew Zocher ,  Luiz Antonio Razera, Jr. ,  Lawrence Rankin Burgess

发明人： Theron L. Jones ,  Andrew Zocher ,  Luiz Antonio Razera, Jr. ,  Lawrence Rankin Burgess

IPC分类号： H03D3/00

CPC分类号： H03D7/168

摘要： A receiver having an intermediate frequency error correction circuit includes a mixer having a source input, a local oscillator input, and an IF output, an adjustable frequency local oscillator having an output coupled to the local oscillator input of the mixer, an IF filter having an input coupled to the IF output of the mixer and an IF filtered output, where the IF filter has an IF filter frequency response, and control circuitry coupled to the local oscillator such that the frequency of the local oscillator can be varied to at least: partially correct an IF frequency error.

摘要翻译： 具有中频纠错电路的接收机包括具有源输入，本地振荡器输入和IF输出的混频器，具有耦合到混频器的本地振荡器输入的输出的可变频本地振荡器，具有 耦合到混频器的IF输出的输入端和IF滤波器输出，其中IF滤波器具有IF滤波器频率响应，以及耦合到本地振荡器的控制电路，使得本地振荡器的频率可以至少部分地变化： 纠正IF频率误差。

公开(公告)号：US5781078A

公开(公告)日：1998-07-14

申请号：US759624

申请日：1996-12-05

申请人： Theron L. Jones

发明人： Theron L. Jones

IPC分类号： H03H7/01

CPC分类号： H03H7/01

摘要： A method and apparatus for filter enhancement in an electrical system (8) is provided. The electrical system (8) includes an input circuit (10) having a filter (14) and an output circuit (20) having a filter (24). An input conductive enclosure (12) and an output conductive enclosure (22) protect the electrical system (8) from field coupling between the input circuit (10) and the output circuit (20). A choke balun (26) is connected between the input circuit (10) and the output circuit (20) to also eliminate conductive coupling. The elimination of unwanted coupling enhances the performance of the electrical system (8) by achieving greater stopband attenuation.

摘要翻译： 提供一种用于电气系统（8）中的滤波器增强的方法和装置。 电气系统（8）包括具有滤波器（14）的输入电路（10）和具有滤波器（24）的输出电路（20）。 输入导电外壳（12）和输出导电外壳（22）保护电气系统（8）免受输入电路（10）和输出电路（20）之间的场耦合。 扼流平衡不平衡变压器（26）连接在输入电路（10）和输出电路（20）之间，以消除导电耦合。 消除不想要的耦合通过实现更大的阻带衰减来增强电气系统（8）的性能。