公开(公告)号：US08331486B1

公开(公告)日：2012-12-11

申请号：US12642690

申请日：2009-12-18

申请人： Andrew G. Zocher ,  Arman Hematy

发明人： Andrew G. Zocher ,  Arman Hematy

IPC分类号： H04L25/03

CPC分类号： H03F1/0266 ,  H03F3/2176 ,  H03F2200/15 ,  H03F2200/321 ,  H03G3/004 ,  H03G3/3042

摘要： An integrated circuit device, set forth by way of example and not limitation, includes an IC package provided with a plurality of leads and enclosing: a) a buffer amplifier, b) a switching-mode power amplifier having an input coupled to the output of the buffer amplifier and having an output coupled to at least one of the plurality of leads, and c) a digital controller. A method, set forth by way of example and not limitation, for controlling the power output of a RF transmitter circuit without the need for an attenuator includes developing a signal source, applying the signal source to a buffer amplifier to provide an amplified signal, applying the amplified signal to a switching-mode power amplifier to provide a power output signal, and controlling a gain of the switching-mode power amplifier in response to a digital command.

摘要翻译： 一种集成电路装置，通过实例而非限制的方式，包括一个设有多个引线并包围的IC封装：a）一个缓冲放大器，b）一个开关模式功率放大器，其输入端耦合到 所述缓冲放大器具有耦合到所述多个引线中的至少一个引线的输出，以及c）数字控制器。 用于控制RF发射器电路的功率输出而不需要衰减器的方法（例如并非限制）包括开发信号源，将信号源施加到缓冲放大器以提供放大信号，应用 将放大的信号送到开关模式功率放大器以提供功率输出信号，以及响应于数字命令控制开关模式功率放大器的增益。

公开(公告)号：US06400218B1

公开(公告)日：2002-06-04

申请号：US09515824

申请日：2000-02-29

申请人： Andrew G. Zocher ,  Timothy K. Coffman ,  Joseph P. Heck

发明人： Andrew G. Zocher ,  Timothy K. Coffman ,  Joseph P. Heck

IPC分类号： G06G726

CPC分类号： H03G1/0023 ,  H03H11/0444 ,  H03H11/0472 ,  H03H2210/012 ,  H03H2210/023

摘要： A variable gain control circuit (125, 127) includes a programmable operational transconductance amplifier (OTA) circuit (214) and a programmable conveying circuit (544). The conveying circuit (544) has a programmable differential circuit (550) interconnected to a pair of programming inputs (564, 566). The pair of programming inputs (564, 566) is interconnected to a pair of programming inputs (238, 240) that set the gain of the OTA circuit (214). When the OTA circuit (214) is configured as an operational transconductance filter (112, 113), the programmable differential circuit (550) can adjust the gain of the conveying circuit (544) to compensate for changes in the input impedance of the filter (112, 113). The programming inputs (238, 240) that set the input impedance and bandwidth of the filter (113, 113) also control the amount of signal current transmitted by the conveying circuit (544).

摘要翻译： 可变增益控制电路（125,127）包括可编程运算跨导放大器（OTA）电路（214）和可编程传送电路（544）。 传送电路（544）具有互连到一对编程输入（564,556）的可编程差分电路（550）。 一对编程输入（564,566）与设置OTA电路（214）的增益的一对编程输入（238,240）互连。 当OTA电路（214）被配置为运算跨导滤波器（112,113）时，可编程差分电路（550）可以调节输送电路（544）的增益，以补偿滤波器的输入阻抗的变化（ 112,113）。 设置滤波器（113,113）的输入阻抗和带宽的编程输入（238,240）也控制由传送电路（544）传输的信号电流的量。

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。