公开(公告)号：US20090085660A1

公开(公告)日：2009-04-02

申请号：US11863701

申请日：2007-09-28

申请人： Mark Mudd ,  Isaac Ali ,  Ruiyan Zhao ,  Nick Cowley ,  Colin Perry ,  Richard Goldman

发明人： Mark Mudd ,  Isaac Ali ,  Ruiyan Zhao ,  Nick Cowley ,  Colin Perry ,  Richard Goldman

IPC分类号： H03F3/45

CPC分类号： H03F1/26 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/451 ,  H03G1/0023

摘要： An Automatic Gain Control (AGC) module for controlling Noise Figure (NF) and IM characteristics therein is disclosed. The AGC module comprises a plurality of AGC stages. Each AGC stage comprises a differential amplifier circuit, an input signal transistor and a current-steering circuit. Differential amplifier circuits of the plurality of AGC stages receive control signals at their differential inputs and their output is connected to a common load. The input signal transistors of the plurality of AGC stages receive a common input signal and is further coupled to the differential amplifier circuit and the current-steering circuit. The current-steering circuits and the control signals at the differential amplifier circuits control gain of the each AGC stage of the plurality of AGC stage, which is used to control the NF and the IM characteristics.

摘要翻译： 公开了一种用于控制噪声系数（NF）和IM特性的自动增益控制（AGC）模块。 AGC模块包括多个AGC级。 每个AGC级包括差分放大器电路，输入信号晶体管和电流 - 转向电路。 多个AGC级的差分放大器电路在其差分输入处接收控制信号，并且其输出连接到公共负载。 多个AGC级的输入信号晶体管接收公共输入信号，并且还耦合到差分放大器电路和电流转向电路。 差动放大器电路中的电流导向电路和控制信号控制用于控制NF和IM特性的多个AGC级的每个AGC级的增益。

公开(公告)号：US07492222B2

公开(公告)日：2009-02-17

申请号：US11479879

申请日：2006-06-30

申请人： Nick Cowley ,  Mark Mudd

发明人： Nick Cowley ,  Mark Mudd

IPC分类号： H03F3/68

CPC分类号： H03F3/45089 ,  H03F2200/451 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45392 ,  H03F2203/45612 ,  H03G3/3036

摘要： A compound automatic gain control (AGC) circuit includes multiple AGC stages coupled with signal input nodes and signal output nodes in parallel. Each of the AGC stages has separate, individually controllable, control inputs. During gain back off, the AGC stages are backed off in sequence.

摘要翻译： 复合自动增益控制（AGC）电路包括与信号输入节点和信号输出节点并联耦合的多个AGC级。 每个AGC级具有单独的，可单独控制的控制输入。 在增益恢复期间，AGC级按顺序退回。

公开(公告)号：US20080171517A1

公开(公告)日：2008-07-17

申请号：US11648849

申请日：2006-12-29

申请人： Isaac Ali ,  David Albert Sawyer ,  Nick Cowley

发明人： Isaac Ali ,  David Albert Sawyer ,  Nick Cowley

IPC分类号： G01S7/40 ,  H04B17/00

CPC分类号： H04B17/21 ,  H04B17/0085 ,  H04B17/29

摘要： In some embodiments, a radio transmitter assembly comprises a test signal generator module to generate a first instance of a test signal, the test signal comprising a code, a test signal receiver module which receives the code, a signal combiner to combine the first instance of the test signal with a real signal to create a combined signal, a radio signal generator to generate a radio signal from the combined signal, a signal separator to separate a second instance of the test signal from the radio signal, and comparator logic in the test signal receiver module to compare the code with a code embedded in the second instance of the test signal in the test signal receiver module.

摘要翻译： 在一些实施例中，无线电发射器组件包括测试信号发生器模块以产生测试信号的第一实例，测试信号包括代码，接收代码的测试信号接收器模块，组合信号的第一实例 具有实信号的测试信号以产生组合信号，无线电信号发生器从组合信号产生无线电信号，信号分离器将测试信号的第二个实例与无线电信号分开，以及测试中的比较器逻辑 信号接收器模块，用于将代码与嵌入在测试信号接收器模块中的测试信号的第二实例中的代码进行比较。