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    • 76. 发明公开
    • COMMUNICATION DEVICE
    • 通信设备
    • EP2175567A1
    • 2010-04-14
    • EP08791865.2
    • 2008-07-30
    • Sharp Kabushiki Kaisha
    • KASHIWAGI, Hiroki c/o Sharp Kabushiki Kaisha
    • H04B1/40H04B1/04
    • H04B1/006H04B1/0057H04B1/0067H04B1/52
    • Provided are a first filter 63a and a second filter 63b each having a pass band in the range of a frequency band that is obtained by, for example, substantially bisecting a frequency band of f1 to f4. In that case, the regions of the first filter 63a and the second filter 63b partially overlap with each other with the center frequency f5 interposed therebetween. In practice, even if the division is not bisection, a configuration is adopted in which a frequency region of the wider band (the first frequency band 61a) closer to a second frequency band 61b side is covered by the second filter 63b. Accordingly, it is possible to suppress the influence of load fluctuation in a multiband-compatible radio communication device.
    • 提供了第一滤波器63a和第二滤波器63b,每个滤波器具有在通过例如将f1到f4的频带基本二等分而获得的频带的范围内的通带。 在这种情况下,第一滤波器63a和第二滤波器63b的区域部分地彼此重叠,中​​心频率f5介于它们之间。 实际上,即使分割不是二等分,也采用其中第二滤波器63b覆盖更靠近第二频带61b侧的较宽频带(第一频带61a)的频率区域的配置。 因此,可以抑制多频带兼容无线通信装置中的负载波动的影响。
    • 79. 发明公开
    • High frequency electronic component
    • Elektronische Hochfrequenzkomponente
    • EP2061155A2
    • 2009-05-20
    • EP08019368.3
    • 2008-11-05
    • TDK Corporation
    • Goi, TomoyukiNagai, KentaHarada, NobumiMiura, Mitsuru
    • H04B1/38
    • H04B1/006H04B1/0067
    • A high frequency electronic component includes: a first input terminal that receives a first transmission signal in the form of an unbalanced signal; a second input terminal that receives a second transmission signal in the form of a balanced signal; a balun that converts the second transmission signal in the form of a balanced signal received at the second input terminal to a second transmission signal in the form of an unbalanced signal and outputs this signal; and a switch. The switch performs switching between a signal received at a first input port and a signal received at a second input port, and outputs one of the signals from an output port. The first input port receives the first transmission signal received at the first input terminal. The second input port receives the second transmission signal in the form of an unbalanced signal outputted from the balun. The output port is connected to a power amplifier.
    • 高频电子部件包括:第一输入端子,其以不平衡信号的形式接收第一传输信号; 接收平衡信号形式的第二发送信号的第二输入端; 平衡 - 不平衡转换器,其以第二输入端子接收的平衡信号的形式将第二发送信号转换为不平衡信号形式的第二发送信号,并输出该信号; 和开关。 开关执行在第一输入端口接收的信号与在第二输入端口接收的信号之间的切换,并从输出端口输出信号之一。 第一输入端口接收在第一输入端子接收到的第一传输信号。 第二输入端口以平衡 - 不平衡变换器输出的不平衡信号的形式接收第二传输信号。 输出端口连接到功率放大器。