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1. 发明授权

US6115594A Frequency converter used in a microwave system 失效
标题翻译：用于微波系统的变频器
公开(公告)号：US6115594A
公开(公告)日：2000-09-05
申请号：US83506
申请日：1998-05-22
申请人： Oleg Pozdeev , Doo-Hun Choi , Soon-Chul Jeong
发明人： Oleg Pozdeev , Doo-Hun Choi , Soon-Chul Jeong
IPC分类号： H03C3/00 , H03D9/06 , H04B1/26
CPC分类号： H03D9/0633
摘要： A frequency converter for a microwave system includes: a balun having a slot line connected in a parallel T-junction with a first microstrip line for receiving a radio frequency signal; first and second strip lines respectively disposed on either side of the first microstrip line; second and third microstrip lines respectively connected to outer ends of the first and second strip lines to provide signal paths for inputting local oscillation signals and for outputting intermediate frequency signals; first and second open end circuits respectively connected to both ends of the slot line, and a quad diode mixer bridge having a pair of diode connection points connected to the slot line and having another pair of diode connection points respectively connected to the second and third microstrip lines, the radio frequency signal and local oscillation signals being converted into corresponding intermediate signals therein.
摘要翻译：一种用于微波系统的变频器包括：平衡 - 不平衡转换器，其具有以与第一微带线并联的T形结线连接的槽线，用于接收射频信号; 分别设置在第一微带线的任一侧的第一和第二带状线; 第二和第三微带线分别连接到第一和第二带状线的外端，以提供用于输入本地振荡信号和输出中频信号的信号路径; 分别连接到槽线两端的第一和第二开路端电路，以及四极二极管混频器桥，其具有连接到槽线的一对二极管连接点，并具有分别连接到第二和第三微带的另一对二极管连接点线路，射频信号和本地振荡信号在其中被转换成相应的中间信号。

2. 发明授权

US5986500A Combined linear power amplifying device and method 失效
标题翻译：组合线性功率放大装置及方法
公开(公告)号：US5986500A
公开(公告)日：1999-11-16
申请号：US1206
申请日：1997-12-30
申请人： Jong-Tae Park , Young-Kon Lee , Hong-Kee Kim , Young Kim , Seung-Won Chung , Seong-Hoon Lee , Soon-Chul Jeong , Chul-Dong Kim , Ik-Soo Chang
发明人： Jong-Tae Park , Young-Kon Lee , Hong-Kee Kim , Young Kim , Seung-Won Chung , Seong-Hoon Lee , Soon-Chul Jeong , Chul-Dong Kim , Ik-Soo Chang
IPC分类号： H03F1/32 , H03F1/52 , H03F3/20 , H03F3/60 , H03F3/68 , H02H7/20 , H03F1/14
CPC分类号： H03F1/3235 , H03F1/526 , H03F3/602 , H03F2201/3212
摘要： A device and a method for combining outputs of a plurality of linear power amplifiers while preventing loss of signals. The combined linear power amplifying device, including: a power divider module which has paths connected respectively between one input terminal and a plurality of output terminals and switches connected respectively to each of the output terminals, for dividing power of a RF signal input to the power divider module and respectively outputting the divided power to the output terminals; a power combiner module which has paths connected respectively between a plurality of input terminals and one output terminal and the switches connected respectively to each of the input terminals, for combining power of a RF signal input to the power combiner module and outputting the combined power; and linear power amplifiers which are connected between the output terminals of the power divider module and the input terminals of the power combiner module, for linearly amplifying the RF signal power-divided in the power divider module thereby outputting the linearly amplified signal to the power combiner module, and upon generation of a failed state of the linear power amplifiers, the failed amplifier opening the path of the affected RF signal by turning off the corresponding switches in said power divider module and said power combiner module.
摘要翻译：一种用于组合多个线性功率放大器的输出同时防止信号丢失的装置和方法。该组合线性功率放大装置包括：功率分配器模块，其具有分别连接在一个输入端子和多个输出端子之间的通路，以及分别连接到每个输出端子的开关，用于将输入到功率的RF信号的功率分频分配模块，分别将输出端分配电源; 功率组合器模块，其具有分别连接在多个输入端子和一个输出端子之间的路径，以及分别连接到每个输入端子的开关，用于组合输入到功率组合器模块的RF信号的功率并输出组合的功率; 以及线性功率放大器，其连接在功率分配器模块的输出端子和功率组合器模块的输入端子之间，用于线性放大功率分配器模块中分压的RF信号，从而将线性放大的信号输出到功率组合器模块，并且在产生线性功率放大器的故障状态时，故障放大器通过关闭所述功率分配器模块和所述功率组合器模块中的相应开关来打开受影响的RF信号的路径。

3. 发明授权

US5877653A Linear power amplifier and method for removing intermodulation distortion with predistortion system and feed forward system 失效
标题翻译：线性功率放大器和预失真系统和前馈系统去除互调失真的方法
公开(公告)号：US5877653A
公开(公告)日：1999-03-02
申请号：US751703
申请日：1996-11-18
申请人： Young Kim , Jong-Tae Park , Hong-Kee Kim , Young-Kon Lee , Seung-Won Chung , Seong-Hoon Lee , Soon-Chul Jeong , Chul-Dong Kim , Ik-Soo Chang
发明人： Young Kim , Jong-Tae Park , Hong-Kee Kim , Young-Kon Lee , Seung-Won Chung , Seong-Hoon Lee , Soon-Chul Jeong , Chul-Dong Kim , Ik-Soo Chang
IPC分类号： H03F1/26 , H03F1/32 , H03F3/20
CPC分类号： H03F1/3276 , H03F1/3229 , H03F1/3252 , H03F2201/3212
摘要： A linear power amplifier and method for removing the intermodulation distortion with a predistortion system and a feed forward system. The linear power amplifier having a main power amplifier includes: a predistortion system for firstly suppressing the intermodulation signal generated upon amplification of an RF signal in the main power amplifier, by generating a harmonics corresponding to the input RF signal and a predistortion signal with coupling the RF signal to the harmonics; and a feed forward system for secondly suppressing the intermodulation signal by canceling the input RF signal and the output of the main power amplifier, extracting an intermodulation signal distortion, error-amplifying the extracted intermodulation signal distortion, and coupling the amplified intermodulation signal with the output of the main power amplifier.
摘要翻译：一种线性功率放大器和用预失真系统和前馈系统去除互调失真的方法。具有主功率放大器的线性功率放大器包括：预失真系统，用于首先抑制在主功率放大器中放大RF信号时产生的互调信号，通过产生与输入RF信号相对应的谐波和预失真信号，射频信号到谐波; 以及前馈系统，用于通过消除输入RF信号和主功率放大器的输出来二次抑制互调信号，提取互调信号失真，误差放大所提取的互调信号失真，以及将放大的互调信号与输出的主功率放大器。

4. 发明授权

US5767755A Radio frequency power combiner 失效
标题翻译：射频功率组合器
公开(公告)号：US5767755A
公开(公告)日：1998-06-16
申请号：US740235
申请日：1996-10-25
申请人： Hong-Kee Kim , Young Kim , Soon-Chul Jeong , Chul-Dong Kim
发明人： Hong-Kee Kim , Young Kim , Soon-Chul Jeong , Chul-Dong Kim
IPC分类号： H04B1/04 , H01P1/10 , H01P1/15 , H01P5/12
CPC分类号： H01P5/12 , H01P1/10 , H03F3/602
摘要： A radio frequency power combiner includes a plurality of transmission lines connecting a plurality of input terminals to an output terminal. An RF switch is positioned between each of the input terminals and a transmission line connecting the output terminal to the input terminal. The electrical length between each RF switch and the output terminal is preferably one half of a wavelength at a central frequency, which may be realized by two transmission lines of different impedances in each path, each a quarter wavelength long. When the switches are on, the signal power applied to all of the input terminals is combined at the output terminal. When any given switch is turned off, the RF power incident to the switch is reflected, and the transmission lines connected between that switch and the output terminal appear as an open circuit. The power combiner can also operate as a power divider. The combiner and/or divider have particular utility in RF amplifier applications, to prevent excessive loss of RF power when one or more of the amplifiers fail, by switching off the RF switch(es) connected to the failed amplifier(s).
摘要翻译：射频功率组合器包括将多个输入端连接到输出端的多条传输线。 RF开关位于每个输入端子和连接输出端子与输入端子的传输线之间。每个RF开关和输出端之间的电气长度优选为中心频率波长的一半，这可以通过每个路径中两个不同阻抗的两个传输线实现，每个波长为四分之一波长。当开关打开时，施加到所有输入端子的信号功率在输出端子处组合。当任何给定开关关闭时，入射到开关的RF功率被反射，并且连接在该开关和输出端子之间的传输线显示为开路。功率组合器也可以作为功率分配器工作。组合器和/或分频器在RF放大器应用中具有特殊用途，以防止当一个或多个放大器故障时RF功率的过度损失，通过关断连接到故障放大器的RF开关。

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