公开(公告)号：KR1020000028350A

公开(公告)日：2000-05-25

申请号：KR1019980046548

申请日：1998-10-31

Applicant: 전자부품연구원

Inventor： 양형국 ,  조현민 ,  박종철

IPC: H03H9/64

CPC classification number: H03H9/64 ,  H03H9/0576 ,  H03H9/145 ,  H03H9/6416 ,  H03H9/725

Abstract: PURPOSE: A surface elastic wave duplexer package is to prevent the formation of parasitic capacitance due to the length difference between strip lines respectively connected to a filter chip of the transmitting terminal and a filter chip of the receiving terminal. CONSTITUTION: A surface elastic wave duplexer package comprises: a transmitting filter chip(10); a receiving filter chip(20); and a phase matching strip line(30) all of which are formed on a ground layer. Each of the filter chips is connected to a ground terminal(40) and a signal terminal through a wire. The signal terminal consists of a first signal terminal(50) for receiving a signal applied from an external transmission circuit, a second signal terminal(60) for outputting an input signal to an antenna, a third signal terminal(70) for receiving a signal input through the antenna, and a fourth signal terminal(80) for outputting a received signal to an external receiving circuit. The phase matching strip line is formed on a substrate on which two filter chips are mounted and whose one end is connected to the second signal terminal and the other end is connected to the third signal terminal.

Abstract translation: 目的：表面弹性波双工器封装是为了防止由于分别连接到发射端子的滤波器芯片和接收端子的滤波器芯片的带状线之间的长度差而形成寄生电容。 构成：表面弹性波双工器封装包括：发射滤波器芯片（10）; 接收滤波器芯片（20）; 和相位匹配带状线（30），它们都形成在接地层上。 每个滤波器芯片通过导线连接到接地端子（40）和信号端子。 信号端子包括用于接收从外部发送电路施加的信号的第一信号端子（50），用于向天线输出输入信号的第二信号端子（60），用于接收信号的信号 通过天线输入，以及用于将接收信号输出到外部接收电路的第四信号端子（80）。 相位匹配带状线形成在其上安装有两个滤波器芯片的基板上，并且其一端连接到第二信号端子，另一端连接到第三信号端子。

公开(公告)号：KR1020000019703A

公开(公告)日：2000-04-15

申请号：KR1019980037941

申请日：1998-09-15

Applicant: 전자부품연구원

Inventor： 조현민 ,  양형국 ,  박종철 ,  김진용

IPC: H03H9/64

CPC classification number: H03H9/64 ,  H03H9/131 ,  H03H9/25 ,  H03H9/564

Abstract: PURPOSE: A surface acoustic wave(SAW) filter is provided to improve surface acoustic wave speed of a single crystal substrate and to directly mount the surface acoustic wave filter on a printed circuit board without mounting on a package. CONSTITUTION: A piezoelectric single crystal substrate(100) converts an electric signal into a mechanical surface acoustic wave and converts the surface acoustic wave into the electric signal. An input converter is formed on one side of the piezoelectric single crystal substrate(100) and transmits the electric signal to the piezoelectric single crystal substrate(100). An output converter is formed on the other side of the piezoelectric single crystal substrate(100) and transmits the electric signal converted at the piezoelectric single crystal substrate(100) to the outside. A carbon thin film of diamond nature or diamond thin film(300) is formed on the input and the output converter to expose the top of the piezoelectric single crystal substrate(100) and a part of the input and the output converter, and increases speed of the surface acoustic wave.

Abstract translation: 目的：提供表面声波（SAW）滤波器，以提高单晶基板的表面声波速度，并将表面声波滤波器直接安装在印刷电路板上，而无需安装在封装上。 构成：压电单晶基板（100）将电信号转换为机械声表面波，并将表面声波转换为电信号。 输入转换器形成在压电单晶衬底（100）的一侧，并将电信号传输到压电单晶衬底（100）。 输出转换器形成在压电单晶衬底（100）的另一侧，并将在压电单晶衬底（100）处转换的电信号传输到外部。 在输入和输出转换器上形成金刚石性质的碳薄膜或金刚石薄膜（300），以暴露压电单晶衬底（100）的顶部和输入和输出转换器的一部分，并且增加速度 的表面声波。

公开(公告)号：KR1019980021094A

公开(公告)日：1998-06-25

申请号：KR1019960039835

申请日：1996-09-13

Applicant: 전자부품연구원

Inventor： 양형국 ,  박종철

IPC: H03H9/25

Abstract: 표면탄성파 필터에 관하여 개시한다. 본 발명은 압전기판 상에 전기적 신호가 입력되는 입력전극을 포함하는 한쌍의 제1 빗살전극과, 상기 제1 빗살전극의 하부에 소정거리 이격되어 연결된 한쌍의 제2 빗살전극과, 상기 제2 빗살전극의 하부에 소정거리 이격되어 연결된 한쌍의 제3 빗살전극과, 상기 제3 빗살전극의 하부에 소정거리 이격되어 연결되고 상기 입력된 전기적신호가 상기 압전기판에서 기계적 에너지로 변환되어 탄성파를 발생시킬때 이를 검출하는 출력전극을 포함하는 한쌍의 제4 빗살전극과, 상기 제1 내지 제4 빗살전극의 양끝부분에 마련된 반사기들을 구비한다. 본 발명의 표면탄성파 필터는 칩 크기에는 변화가 없이 4쌍의 IDT전극을 형성하여 저지대역의 감쇄량을 줄일 수 있다.