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    • 1. 发明公开
    • 멀티플렉서, 고주파 프론트엔드 회로 및 통신 장치
    • 多路复用器高频前端电路和通信设备
    • KR20180008330A
    • 2018-01-24
    • KR20170089492
    • 2017-07-14
    • 가부시키가이샤 무라타 세이사쿠쇼
    • OKUDA TETSURO
    • H03H9/72H03H9/125H03H9/64
    • H04J3/247G06F13/22H03H9/145H03H9/25H03H9/72H04B1/005H04B1/406H04B1/48H04J3/1682
    • 고주파신호의전반손실이저감된소형화의멀티플렉서를제공한다. 공통단자(101)에접속된복수의필터를구비하는멀티플렉서(1A)는, 제1 통과대역을갖는저주파측의필터(11A)와, 제1 통과대역보다도높은제2 통과대역을갖는고주파측 필터(12A)를구비하고, 저주파측의필터(11A)는 2 이상의탄성파공진자중 공통단자(101) 측에배치된 1 이상의탄성파공진자를포함한전단필터부(11F)와, 전단필터부(11F)의탄성파공진자이외의탄성파공진자를포함한후단필터부(11R)를갖고, 전단필터부(11F)를단체로공통단자(101) 측으로부터본 경우의제2 통과대역에있어서의반사계수는, 후단필터부(11R)를단체로공통단자(101) 측으로부터본 경우의제2 통과대역에있어서의반사계수보다도크다.
    • 复用器包括在公共端子处彼此连接的滤波器,具有第一通带的低频滤波器以及具有比第一通带高的第二通带的高频滤波器。 该低频滤波器包括初级滤波器部分和后级滤波器部分,该初级滤波器部分包括位于至少两个弹性波谐振器中的公共端子侧上的至少一个第一弹性波谐振器, 该至少一个第一弹性波谐振器。 当从公共端子侧观看初始滤波器部分作为单个分量时,在第二通带中的反射系数大于当从公共端子观看后级滤波器部分时在第二通带中的反射系数 作为一个单一的组件。
    • 10. 发明公开
    • 방열기능을 개선한 전력증폭 및 듀플렉스 복합 장치
    • 功率放大器和双工器复合器,具有改进的散热功能
    • KR1020050031230A
    • 2005-04-06
    • KR1020030067460
    • 2003-09-29
    • 삼성전기주식회사
    • 김응주
    • H03H9/64
    • H03H9/64H03H7/38H03H9/0576H03H9/72H04B7/15
    • A composite apparatus provided with a power amplifier and a duplexer for improving the heat sink function is provided to prevent the frequency transition phenomena due to the heat by blocking the transmission of the high temperature generated at the power amplifier to the other circuit such as the duplexer. A composite apparatus provided with a power amplifier and a duplexer for improving the heat sink function includes a printed circuit board(PCB), a first and a second ground electrode(GA,GB), a power amplifying unit(51), a duplexer(54), and an impedance matching device(55). The PCB is formed by stacking a plurality of dielectric layers and includes a mounting surface and a bottom surface. The first and the second ground electrode(GA,GB) are formed on the bottom surface of the PCB. The power amplifying unit(51) is mounted on the PCB, and is connected to the first ground electrode(GA) through the first via hole(VH11) penetrating from the mounting surface of the PCB to the bottom surface and amplifies the transmission signal. The duplexer(54) is mounted on the PCB and is connected to the second ground electrode(GB) through the second via hole(VH12) penetrating from the mounting surface of the PCB to the bottom surface, and is provided with a reception filter and a transmission filter. And, the impedance matching device(55) is formed in the shape of conductive pattern and connected between the reception filter and the transmission filter of the duplexer(54) to match the impedance between the reception filter and the transmission filter.
    • 提供了一种具有功率放大器和用于提高散热功能的双工器的复合装置,以通过阻止在功率放大器处产生的高温传输到另一电路(例如双工器)来防止由于热量引起的频率转换现象 。 具有用于提高散热功能的功率放大器和双工器的复合装置包括印刷电路板(PCB),第一和第二接地电极(GA,GB),功率放大单元(51),双工器 54)和阻抗匹配装置(55)。 PCB通过堆叠多个电介质层而形成,并且包括安装表面和底表面。 第一和第二接地电极(GA,GB)形成在PCB的底表面上。 功率放大单元(51)安装在PCB上,并通过从PCB的安装表面穿透到底面的第一通孔(VH11)连接到第一接地电极(GA),并放大传输信号。 双工器(54)安装在PCB上,并通过从PCB的安装表面穿透到底面的第二通孔(VH12)连接到第二接地电极(GB),并且设置有接收滤波器 传输过滤器。 并且,阻抗匹配装置(55)形成为导电图案的形状,并且连接在双工器(54)的接收滤波器和发送滤波器之间,以匹配接收滤波器和发送滤波器之间的阻抗。