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    • 2. 发明公开
    • Antenna duplexer and mobile communication device using the same
    • Antenenweiche und deren Verwendung in einem mobilenKommunikationsgerät
    • EP1508974A2
    • 2005-02-23
    • EP04026828.6
    • 2002-02-26
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Nakamura, HiroyukiIshizaki, ToshioAdachi, HisashiSakakura, MakotoKosugi, HiroakiItokawa, HiroyukiNakamura, Toshiaki
    • H04B1/48
    • H04B1/0057H04B1/48H04B1/52
    • An antenna duplexer comprising an antenna terminal; an antenna switch connected to said antenna terminal; a transmitting filter connected electrically to one side terminal of said antenna switch; and a receiving filter connected to the other side terminal of said antenna switch, wherein, at a non-simultaneous transmission and reception time when transmission and reception are not performed simultaneously, said antenna switch is a switch for switching over to time division of the electrical connection of said antenna terminal to said one side terminal and the electrical connection of said antenna terminal to said other side terminal, respectively, and wherein, at a simultaneous transmission and reception time when transmission and reception are performed simultaneously, said antenna switch is a switch for connecting electrically said antenna terminal to said one side terminal and said other side terminal simultaneously.
    • 一种天线双工器,包括天线端子; 连接到所述天线端子的天线开关; 与所述天线开关的一侧端子电连接的发送滤波器; 以及连接到所述天线开关的另一侧端子的接收滤波器,其中,当不同时发送和接收的非同时发送和接收时间时,所述天线开关是用于切换到电气 所述天线端子与所述一侧端子的连接以及所述天线端子与所述另一侧端子的电连接,并且其中,在同时进行发送和接收的同时发送和接收时间中,所述天线开关是开关 用于将所述天线端子同时连接到所述一侧端子和所述另一侧端子。
    • 4. 发明公开
    • Filter with amplifier
    • 过滤器einemVerstärker
    • EP0825710A1
    • 1998-02-25
    • EP97114267.4
    • 1997-08-19
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Matsuyoshi, ToshimitsuTachibana, MinoruYoshizumi, JunichiSakakura, MakotoIshizaki, ToshioUwano, TomokiNakamura, Toshiaki
    • H03F3/60
    • H01P1/2053H03F3/604H03F2200/372
    • A filter (K1-K4) with a low-noise filter, comprising: two amplification circuits (105, 106); a first 3-dB hybrid circuit (103) which is connected to an input side of the amplification circuits (105, 106); a second 3-dB hybrid circuit (104) which is connected to an output side of the amplification circuits (105, 106); and a filter (131) which is connected to one end (121) of an input terminal of the first 3-dB hybrid circuit (103); wherein the other end (122) of the input terminal of the first 3-dB hybrid circuit (103) is subjected to matched termination; wherein a signal is inputted to an input terminal (101) of the filter (131) and is outputted from one end (124) of an output terminal of the second 3-dB hybrid circuit (104); wherein the other end (123) of the output terminal of the second 3-dB hybrid circuit (104) is subjected to matched termination.
    • 一种具有低噪声滤波器的滤波器(K1-K4),包括:两个放大电路(105,106); 连接到放大电路(105,106)的输入侧的第一3-dB混合电路(103)。 连接到放大电路(105,106)的输出侧的第二3-dB混合电路(104)。 以及连接到所述第一3-dB混合电路(103)的输入端的一端(121)的滤波器(131)。 其中所述第一3-dB混合电路(103)的输入端的另一端(122)经受匹配的终止; 其中信号被输入到所述滤波器(131)的输入端(101)并从所述第二3-dB混合电路(104)的输出端的一端(124)输出; 其中第二3-dB混合电路(104)的输出端的另一端(123)经受匹配的终止。