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41. 发明授权

US06977554B2 Variable gain amplifier for high frequency band using microstrip hybrid 失效
标题翻译：使用微带混合的高频可变增益放大器
公开(公告)号：US06977554B2
公开(公告)日：2005-12-20
申请号：US10679056
申请日：2003-10-02
申请人： Jin Bong Sung , Sung Weon Kang , Yun Tae Kim
发明人： Jin Bong Sung , Sung Weon Kang , Yun Tae Kim
IPC分类号： H03G3/00 , H03F3/60
CPC分类号： H03F3/60
摘要： The present invention relates to a variable gain amplifier for a high frequency band, and comprises a divider for dividing a input signal; a fixed variable gain amplifier for amplifying an output signal of the divider; a microstrip ring hybrid for outputting a plurality of signals which have the same or different phases, wherein the microstrip ring hybrid comprises a plurality of input terminals and output terminals having a constant impedance; a switch for selectively inputting an output of the variable gain amplifier to any one of the input terminals of the microstrip ring hybrid; a transmission line for delaying the output signal of the divider; and a combiner for combining each of the output signals of the microstrip ring hybrid and a signal passing through the transmission line and outputting the combined signal, wherein the output power is controlled by selectively inputting the output of the variable gain amplifier to any one of the input terminals of the microstrip ring hybrid by means of the switches, so that its input-output matching may be obtained irrespective of its gain.
摘要翻译：本发明涉及一种用于高频带的可变增益放大器，并且包括用于分割输入信号的分频器; 一个用于放大分频器的输出信号的固定可变增益放大器; 用于输出具有相同或不同相位的多个信号的微带环混合，其中所述微带环混合包括具有恒定阻抗的多个输入端和输出端; 用于选择性地将可变增益放大器的输出输入到微带环混合器的任何一个输入端的开关; 用于延迟分配器的输出信号的传输线; 以及组合器，用于组合微带环混合的每个输出信号和通过传输线的信号，并输出组合信号，其中输出功率通过有选择地将可变增益放大器的输出输入到微带环的输入端通过开关混合，使得其输入 - 输出匹配可以获得而不管其增益如何。

42. 发明授权

US06750742B2 Radio frequency device using micro-electronic-mechanical system technology 失效
标题翻译：射频设备采用微电子机械系统技术
公开(公告)号：US06750742B2
公开(公告)日：2004-06-15
申请号：US10331592
申请日：2002-12-30
申请人： Sung Weon Kang , Sung Hae Jung , Woo Seok Yang , Yun Tae Kim
发明人： Sung Weon Kang , Sung Hae Jung , Woo Seok Yang , Yun Tae Kim
IPC分类号： H01P110
CPC分类号： H01P1/127
摘要： Provided is a radio frequency device using a micro-electronic-mechanical system (MEMS) technology that can be applied to a mobile communication area by reducing the operating voltage, while increasing the operating speed. The RF device of the present research includes: a substrate; a first electrode which is mounted on the substrate and forms an actuator, part of the first electrode not contacting the substrate; and a second electrode which is apart in a regular space from the substrate and forms an actuator, part of the second electrode being overlapped with the first electrode, wherein the first electrode and the second electrode contact each other at a contact point by an electrostatic attractive force generated between the two electrodes.
摘要翻译：提供了一种使用微电子机械系统（MEMS）技术的射频装置，其可以通过降低工作电压同时提高操作速度而应用于移动通信区域。本研究的RF器件包括：衬底; 第一电极，其安装在所述基板上并形成致动器，所述第一电极的一部分不接触所述基板; 以及第二电极，其与所述基板在规则的空间中分开并形成致动器，所述第二电极的一部分与所述第一电极重叠，其中所述第一电极和所述第二电极在接触点处通过静电吸引在两个电极之间产生的力。

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