Abstract:
A prepreg structure for shielding an electromagnetic wave and an antenna using the same are provided to obtain high rigidity and a strength characteristic by improving electromagnetic wave absorption performance in a microwave band. A magnetic material like Ni-Zn-Ferrite particle is added to the thermosetting resin like the epoxy. The Ni-Zn-Ferrite particle is uniformly dispersed to the thermosetting resin through the agitation process(S11). The prepared glass fiber is impregnated to the thermosetting resin mixture(S13). The resin component is solidified by heating the glass fiber impregnated to the thermosetting resin mixture at 120 degrees centigrade in an oven for one minute(S15). The prepreg is prepared through the above process. One prepared prepreg or more are stacked(S17). A vacuum process for the stacked prepreg is performed by using a vacuum pump for removing a bubble excessively generated inside(S19). The vacuum processed prepreg is hardened in the oven(S21).
Abstract:
The present invention relates to an optical repeater for an LTE service installed on a messenger wire. The optical repeater includes: a main body having an optical communications module for LTE communications and a power supply device; one or more install blocks coupled to the top of the main body, and coupled to the messenger wire; a first optical cable guide part coupled to one side surface of the main body, and having an optical cable inserted thereinto or drawn therefrom, wherein the optical cable is arranged parallel with the messenger wire; a second optical cable guide part arranged parallel with the first optical cable guide part, and having the optical cable inserted thereinto or drawn therefrom; a first optical cable fixing part coupled in the main body, and configured to fix the optical cable inserted along the first optical cable guide part; a second optical cable fixing part coupled in the main body, arranged parallel with the first optical cable fixing part, and configured to fix the optical cable inserted along the second optical cable guide part; and an optical fiber organizer coupled in the main body, and configured to accommodate the extra length of optical fibers included in the optical cable, wherein the optical cable inserted into the main body is coupled to the optical communications module.
Abstract:
발명은 중계기 설치용 브라켓에 관한 것으로서, 고정체에 설치하기 위해 중계기 본체를 둘러싸며 상기 중계기 본체와 결합되는 중계기 브라켓; 상기 중계기 브라켓의 일측에 구비되고, 상기 중계기 본체가 상기 중계기 본체의 xy평면과 상기 고정체가 평행하도록 설치될 때 상기 중계기 본체와 결합되는 월 마운팅 부재; 및 상기 중계기 브라켓의 타측에 구비되고, 상기 중계기 본체가 상기 중계기 본체의 xz평면과 상기 고정체가 평행하도록 설치될 때 상기 중계기 본체와 결합되는 랙 마운팅 부재를 포함하고, 상기 중계기 브라켓은, 상기 고정체에 고정되는 베이스면; 상기 베이스면의 양측에 상기 베이스면과 교차하는 방향으로 상호 마주하며 연결된 복수 개의 측면을 포함하고, 상기 월 마운팅 부재 및 상기 랙 마운팅 부재는 상기 중계기 브라켓 측면에 결합된 것이며, 본 발명은 통신 장비의 중계기를 건물의 벽면 또는 건물의 벽면에 구비된 고정체에 설치 할 때, 중계기를 다양한 방향에 대응하게 설치할 수 있다.
Abstract:
PURPOSE: A bracket for installing a repeater is provided to enable a user to install a repeater to various directions according to walls of a building. CONSTITUTION: A wall mounting member(200) is arranged at one side of a repeater bracket. The wall mounting member combines with the repeater body when the repeater body is parallel to an x-y plane. A rack mounting member(300) is included at other side of the repeater bracket. The rack mounting member combines with the repeater body when the repeater body is parallel to an x-z plane.
Abstract:
중계기 시스템은 기지국으로부터 수신한 입력 신호로부터 검출한 통화량과 각 섹터의 호처리 용량을 비교하고, 상기 통화량과 각 섹터의 호처리 용량의 비교 결과에 기초하여 리모트부에 할당된 주파수 용량(FA)의 개수를 제어하는 도너부 및 상기 도너부와 접속되고, 상기 도너부에 의하여 할당된 주파수 용량에 해당하는 입력 신호를 처리하는 하나 이상의 리모트부를 포함한다.
Abstract:
PURPOSE: A repeater for a communication device is provided to prevent the damage of a common unit caused by the head generated from an amplifier unit by additionally separating the common unit from the amplifier unit. CONSTITUTION: A common unit(100) includes a component for controlling the operation of a repeater(1000), and an amplifier unit(200) comprises a component for amplifying the power of the repeater, and a connection cable connects the common unit to the amplifier unit. The common unit includes an RF(Radio Frequency) up/down conversion unit and an MCU(Micro Controller Unit), and the amplifier unit includes an HPA(High Power Amplifier) or an LPA(Linear Power Amplifier).
Abstract:
PURPOSE: A C/I(Carrier to Interference) value measurement apparatus of an input signal of an RF relay and an antenna tilting method of the RF relay are provided to receive a signal of high quality from an antenna by measuring an input level and C/I value of the input signal. CONSTITUTION: If a first C/I value about a signal inputted to a first duplexer of an RF relay is inputted to a second duplexer, a C/I value measuring unit(481) measures a second C/I value about a signal inputted to the second duplexer. A C/I value comparison unit(482) compares the first C/I value with the predetermined standard C/I value. A C/I value display unit displays the first C/I value, the second C/I value and a comparison result.
Abstract:
PURPOSE: A cabinet for a communication device and the communication device having the same are provided to reduce the area occupied by an entire communication system. CONSTITUTION: A body includes a first body reception unit(412) and a second body reception unit which faces the first body reception unit. A first frame reception unit(421) faces the first body reception unit, and a first heatsink unit is exposed to the outside by facing the first frame reception unit. A second frame reception unit faces the second body reception unit, and a second heatsink unit is exposed to the outside by facing the second frame reception unit. A second frame is opened and closed in relation to the body.
Abstract:
이동국의 위치 추적을 위한 방법 및 장치가 제공된다. 중계기에서 이동국의 위치 추적을 위한 신호를 생성하는 방법은 (a) 기지국으로부터 제 1 PN 신호를 수신하여 증폭하는 단계, (b) 상기 제 1 PN 신호로부터 제 1 PN 코드를 추출하는 단계, (c) 상기 제 1 PN 코드의 오프셋을 기초로 하여, 상기 기지국의 인접 기지국이 할당 받지 않은 PN 코드인 제 2 PN 코드를 선택하는 단계, (d) 상기 제 2 PN 코드를 포함하는 제 2 PN 신호를 상기 증폭된 제 1 PN 신호와 함께 상기 이동국으로 전송하는 단계를 포함하되, 상기 제 2 PN 신호는 상기 증폭된 제 1 PN 신호보다 미리 정해진 크기만큼 낮은 세기를 가진다. 중계기, 교환기, 위치 추적
Abstract:
PURPOSE: A multi band optical relay system in a mobile communication network is provided to transceive a signal of a multi band through a single optical line, thereby increasing line use efficiency. CONSTITUTION: A host unit(100) controls/combines levels of downlink RF(radio frequency) signals with respective service band. The host unit generates a downlink optical signal including service bands. A remote unit(200) separates the generated downlink optical signals to convert them into downlink RF signals with respective service bands. The remote unit radiates a mixed down link radio frequency signal through a plurality of antennas.