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71. 发明申请

US20030193369A1 Zero-bias bypass switching circuit using mismatched 90 degrees hybrid 有权
标题翻译：零偏置旁路开关电路使用不匹配的90度混合
公开(公告)号：US20030193369A1
公开(公告)日：2003-10-16
申请号：US10403779
申请日：2003-03-31
申请人： Andrew Corporation
发明人： Donald G. Jackson , Russell Hoppenstein
IPC分类号： H03F001/14
CPC分类号： H03F1/52 , H03F3/60 , H03F2200/198 , H03F2200/294 , H03F2200/372 , H03F2203/7239
摘要： A zero-bias bypass apparatus for a low noise amplifier includes a bypass circuit, and a switching circuit coupled with a low noise amplifier and with the bypass circuit. The switching circuit includes one or more solid state devices responsive to absence of a control bias for switching an RF input signal from said amplifier to the bypass circuit with a low insertion loss and high isolation.
摘要翻译：用于低噪声放大器的零偏置旁路装置包括旁路电路和与低噪声放大器和旁路电路耦合的开关电路。开关电路包括响应于不存在用于以低插入损耗和高隔离将RF输入信号从所述放大器切换到旁路电路的控制偏置的一个或多个固态器件。

72. 发明申请

US20030179040A1 Single-detector automatic gain control circuit 失效
标题翻译：单检测器自动增益控制电路
公开(公告)号：US20030179040A1
公开(公告)日：2003-09-25
申请号：US10391897
申请日：2003-03-19
申请人： Andrew Corporation, a Delaware corporation
发明人： Michael G. Kossor
IPC分类号： H03G003/20
CPC分类号： H03G3/3042
摘要： An automatic gain control (AGC) circuit for an RF amplifier (or other type of signal-processing module) has a single, switched, RF detector that selectively detects the instantaneous power level of either the sampled RF input signal or the sampled (and optionally attenuated) RF output signal. A processor uses the detected input and output power levels to generate control signals for a variable (e.g., voltage-controlled) attenuator that attenuates the RF input signal prior to being applied to the input of the RF amplifier. The processor is designed (eg., programmed) to control the variable attenuator to maintain a constant gain between the input and output terminals of the AGC circuit. In addition to this closed-loop mode of operation, the AGC circuit may also have a temperature sensor, where the processor controls the variable attenuator in an open-loop mode of operation based on the temperature of the RF amplifier.
摘要翻译：用于RF放大器（或其他类型的信号处理模块）的自动增益控制（AGC）电路具有单个切换的RF检测器，其选择性地检测采样的RF输入信号或采样的（或可选地）的瞬时功率电平衰减）RF输出信号。处理器使用检测到的输入和输出功率电平来产生用于在施加到RF放大器的输入之前衰减RF输入信号的可变（例如，电压控制）衰减器的控制信号。处理器被设计（例如，编程）来控制可变衰减器以在AGC电路的输入和输出端之间保持恒定的增益。除了该闭环操作模式之外，AGC电路还可以具有温度传感器，其中处理器基于RF放大器的温度来控制开环工作模式中的可变衰减器。

73. 发明申请

US20030174030A1 RF cable having clad conductors and method of making same 有权
标题翻译：具有包覆导体的RF电缆及其制造方法
公开(公告)号：US20030174030A1
公开(公告)日：2003-09-18
申请号：US10100541
申请日：2002-03-18
申请人： Andrew Corporation
发明人： Vijay K. Chopra , Hugh Robert Nudd
IPC分类号： H01P003/12 , H01P003/06
CPC分类号： H01P3/06 , H01P11/005
摘要： An RF coaxial cable with clad conductors includes an inner tubular conductor having a first base layer formed of a relatively higher conductivity material, and a first bulk layer formed of a relatively lower conductivity material. The first base layer of higher conductivity material extends over an area greater than an area of the first bulk layer to form first margin regions composed of only the higher conductivity material. The first margin regions of the first base layer of the higher conductivity material are joined together to form the inner tubular conductor with only the first margin regions of the higher conductivity material being joined. Also included is a dielectric material surrounding the inner conductor, an outer tubular conductor formed in the same manner as the inner conductor. The first base layer of higher conductivity material of the inner tubular conductor faces outwardly toward the dielectric material and the higher conductivity material corresponding to the outer tubular conductor faces inwardly toward the dielectric material.
摘要翻译：具有包覆导体的RF同轴电缆包括具有由相对较高导电性材料形成的第一基底层和由相对较低导电性材料形成的第一本体层的内部管状导体。较高导电性材料的第一基底层在大于第一本体层的面积的区域上延伸以形成仅由较高导电性材料构成的第一边缘区域。较高导电性材料的第一基底层的第一边缘区域被连接在一起以形成只有较高导电性材料的第一边缘区域被接合的内部管状导体。还包括围绕内部导体的介电材料，以与内部导体相同的方式形成的外部管状导体。内部管状导体的较高导电性材料的第一基底层朝向介电材料面向外，并且对应于外部管状导体的较高导电性材料向内朝向电介质材料。

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