Abstract:
PURPOSE: A broadband arrester is provided to improve the quality of a mobile communication system by forming the arrester having a low PIMD(Passive Inter-Modulation Distribution) characteristic in a mobile communication base station. CONSTITUTION: An input and an output connector(1,2) are connected to both sides of a housing(3). A short body(7) is connected to a center portion of the housing(3). An inner pin(4) is installed in the inside of the housing(3) in order to connect the input and the output connectors(1,2) to each other. A λ/4 short pin(3) is installed at the short body(7). The λ/4 short pin(3) is connected to the inner pin(4). The λ/4 short pin(3) has a thickness control portion(A) for controlling impedance. The input connector(1) and the output connector(2) are formed with a female type and a male type, respectively. The impedance is controlled by changing the thickness of the thickness control portion(A). The short pin(5) is inserted into a hole of the inner pin(4). A resonator(6) is installed in the inside of the short body(7). A cover(8) is installed an upper portion of the short body(7).
Abstract:
PURPOSE: A parallel optical connection module and a method for manufacturing the same are provided to increase the optical output by minimizing the coupling loss in a process for transmitting an optical signal. CONSTITUTION: A parallel optical connection module includes a substrate(10), a silicon optical bench(50), a light source unit/optical detection unit(30), a driving unit/receiving unit(20), an optical waveguide(40), an adaptor(80) and a ferrule(70). The substrate(10) is provided to a heat spreader by forming a trench on a predetermined region, an electrode pad and a predetermined circuit pattern. The silicon optical bench(50) formed on the substrate(10) is provided with a trench. The light source unit/optical detection unit(30) is provided with the light source for generating a light beam and an optical detector for converting the received optical signal into an electrical signal. The driving unit/receiving unit(20) for driving the light source in response to the electric signal and a receiver for outputting the supplied electrical signal through the electrode pad. The optical waveguide(40) is provided with a lower clad layer, an upper clad layer, a core formed between the lower and the upper clad layers. The adaptor(80) is connected to the connector which is connected to the optical fiber. And, the ferrule(70) supports the optical waveguide(40) to the adaptor(80).
Abstract:
본 발명은 이동통신의 기지국상에서 중대한 문제를 일으키는 무선주파수(Radio Frequency) 수동 부품의 상호변조 왜곡신호의 발생위치를 검출하기 위한 방법 및 장치에 관한 것이다. 상호변조 왜곡신호의 발생은 주파수 특성, 전송선의 길이 등에 의해 측정시 널 포인트(Null Point)를 발생시키며, 이러한 널 포인트의 위치는 상호변조 왜곡신호 발생위치에 의해 결정된다. 정확한 수치적인 계산에 의해 제작된 측정용 케이블(cable)과 커넥터(connector)에 의해 다양한 길이를 갖는 무선주파수 수동 부품의 정밀한 상호변조 왜곡신호 발생위치를 검출할 수 있다.