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1. 发明授权

US3942119A Multiple-transmission-channel active antenna arrangement 失效
标题翻译：多传输通道有源天线装置
公开(公告)号：US3942119A
公开(公告)日：1976-03-02
申请号：US446533
申请日：1974-02-27
申请人： Hans Heinrich Meinke , Heinz Lindenmeier , Fritz Landstorfer , Gerhard Flachenecker
发明人： Hans Heinrich Meinke , Heinz Lindenmeier , Fritz Landstorfer , Gerhard Flachenecker
IPC分类号： H03H7/46 , H01Q1/00 , H03H11/34 , H04B1/18 , H01Q1/50
CPC分类号： H03H11/346
摘要： An antenna has two output terminals and is operative for receiving electromagnetic radiation and converting the same into electrical signals appearing across the two antenna output terminals. There are provided a first and a second transmission channel, each having a respective input comprised of a pair of input terminals, and respectively operative for transmitting electrical signals having frequencies lying in a predetermined first frequency range and in a predetermined higher second frequency range, one of the input terminals of the first channel being connected to one of the two antenna output terminals. A transformer includes a primary winding connecting the other of the input terminals of the first channel to the other of the two antenna output terminals. The transformer further includes a secondary winding connected across the two input terminals of the second transmission channel. The transformer is operative when the frequency of the electrical signal across the antenna output terminals is in the aforementioned first range for stepping down the input impedance of the second channel as reflected into the circuit of the primary winding to a value lower than the value of the input impedance of said first transmission channel at such frequency.
摘要翻译：天线具有两个输出端子，并且用于接收电磁辐射并将其转换成跨越两个天线输出端子出现的电信号。提供了第一和第二传输信道，每个传输信道具有包括一对输入端的相应输入，并且分别用于发送具有处于预定的第一频率范围和预定的较高的第二频率范围的频率的电信号，一个的第一通道的输入端子连接到两个天线输出端子之一。变压器包括将第一通道的另一个输入端子连接到两个天线输出端子中的另一个的初级绕组。变压器还包括连接在第二传输通道的两个输入端上的次级绕组。当跨越天线输出端子的电信号的频率处于上述第一范围内时，变压器工作，以将第一通道的电路中反射的第二通道的输入阻抗降低到低于在这种频率下所述第一传输信道的输入阻抗。

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