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    • 2. 发明授权
    • Filter, demultiplexer, and module including demultiplexer, communication apparatus
    • 滤波器,解复用器和模块,包括解复用器,通信设备
    • US08228137B2
    • 2012-07-24
    • US12709182
    • 2010-02-19
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • H03H7/46H04B1/48H03H9/52H03H9/70
    • H03H9/0576H03H9/725
    • A demultiplexer has a common terminal, a transmission terminal, and a reception terminal, and furthermore includes a transmission filter connected between the common terminal and the transmission terminal, a reception filter connected between the common terminal and the reception terminal, and a phase shift circuit connected in series to the reception filter connected between the common terminal and the reception terminal. A node on the line from the phase shift circuit to the common terminal or the transmission terminal, and a node on the line from the phase shift circuit to the reception terminal are coupled via a reactance. Accordingly, it is possible to fundamentally reduce or eliminate the situation in which transmission signals from the transmission filter arrive at the reception circuit, and improve isolation.
    • 解复用器具有公共端子,发送端子和接收端子,并且还包括连接在公共端子和发送端子之间的发送滤波器,连接在公共端子和接收端子之间的接收滤波器以及相移电路 与连接在公共端子和接收端子之间的接收滤波器串联连接。 从相移电路到共用端子或发送端子的线路上的节点,以及从相移电路到接收端子的线路上的节点经由电抗耦合。 因此,可以从根本上减少或消除来自发送滤波器的发送信号到达接收电路并且改善隔离的情况。
    • 4. 发明授权
    • Duplexer with a ladder filter and a multimode filter on the same substrate
    • 带有梯形滤波器的双工器和同一基板上的多模滤波器
    • US07026890B2
    • 2006-04-11
    • US10830023
    • 2004-04-23
    • Jun TsutsumiShogo InoueTakashi MatsudaMasanori Ueda
    • Jun TsutsumiShogo InoueTakashi MatsudaMasanori Ueda
    • H03H9/72H03H9/64
    • H03H9/0576H03H3/08H03H9/0038H03H9/6483H03H9/72H03H9/725
    • A duplexer includes a ladder filter and a multimode filter that are formed on the same surface of a predetermined substrate. In this duplexer, a first comb-like electrode of the ladder filter and a second comb-like electrode of the multimode filter have the same layer structure with the same film thickness. The first comb-like electrode and the second comb-like electrode are formed with single-layer films mainly containing aluminum. The relationship among the film thickness h of the first comb-like electrode and the second comb-like electrode, the center frequency f1 of the frequency band of the ladder filter, and the center frequency f2 of the frequency band of the multimode filter, is expressed as: 300≦h×f1≦480 300≦h×f2≦430.
    • 双工器包括形成在预定基板的相同表面上的梯形滤波器和多模式滤波器。 在该双工器中,梯形滤波器的第一梳状电极和多模滤波器的第二梳状电极具有相同的膜厚度的相同的层结构。 第一梳状电极和第二梳状电极由主要含有铝的单层膜形成。 第一梳状电极和第二梳状电极的膜厚h与梯形滤波器的频带的中心频率f 1 1和中心频率f 2 表示为:<?in-line-formula description =“In-line Formulas”end =“lead”?> 300 <= hxf <1> / SUB> <= 480 <?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> 300 <= hxf <= 430。<?in-line-formula description =“In-line Formulas”end =“tail”?>
    • 6. 发明申请
    • FILTER, DEMULTIPLEXER, AND MODULE INCLUDING DEMULTIPLEXER, COMMUNICATION APPARATUS
    • 滤波器,解复用器和模块,包括解复用器,通信设备
    • US20100150075A1
    • 2010-06-17
    • US12709182
    • 2010-02-19
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • H04W4/00H03H7/12
    • H03H9/0576H03H9/725
    • A demultiplexer has a common terminal, a transmission terminal, and a reception terminal, and furthermore includes a transmission filter connected between the common terminal and the transmission terminal, a reception filter connected between the common terminal and the reception terminal, and a phase shift circuit connected in series to the reception filter connected between the common terminal and the reception terminal. A node on the line from the phase shift circuit to the common terminal or the transmission terminal, and a node on the line from the phase shift circuit to the reception terminal are coupled via a reactance. Accordingly, it is possible to fundamentally reduce or eliminate the situation in which transmission signals from the transmission filter arrive at the reception circuit, and improve isolation.
    • 解复用器具有公共端子,发送端子和接收端子,并且还包括连接在公共端子和发送端子之间的发送滤波器,连接在公共端子和接收端子之间的接收滤波器以及相移电路 与连接在公共端子和接收端子之间的接收滤波器串联连接。 从相移电路到共用端子或发送端子的线路上的节点,以及从相移电路到接收端子的线路上的节点经由电抗耦合。 因此,可以从根本上减少或消除来自发送滤波器的发送信号到达接收电路并且改善隔离的情况。