KR970013864A

KR970013864A - An apparatus for transmitting and receiving IF signals in DAMA-SCPC

Info

Publication number: KR970013864A
Application number: KR1019950027115A
Authority: KR
Inventors: 이준성; 조일남
Original assignee: 유기범; 대우통신 주식회사
Priority date: 1995-08-29
Filing date: 1995-08-29
Publication date: 1997-03-29
Also published as: KR0153679B1

Abstract

본 발명에 따른 IF송신장치는 송신 릴레이 접속부(11); IF조합기(12); 대역통과필터(13:BPF); 및 방향성 결합기(14:Directional Coupler)로 구성되고, IF 수신장치는 IF캐리어신호를 입력받아 수신방향으로 유도하고 모니터를 위한 반향출력을 제공하는 방향성 결합기(21); 상기 방향성 결합기(21)의 출력에서 소정 주파수대만을 통과시켜 잡음을 제거하는 대역통과필터(22:BPF); 대역통과된 IF캐리어신호를 균등 이득배분이 되도록 분배하는 IF분배기(23); 및 IF 제어신호에 따라 분배된 IF신호중 사용되지 않은 것은 종단처리하는 수신 릴레이 접속부(24)로 구성되어 릴레이부가 IF제어신호에 따라 해당 IF신호를 종단시키므로써 균등한 이득배분이 가능하게 하고, RF측과 접속되는 방향성 결합기에 반향출력을 검출하여 모니터신호를 제공하므로써 유지보수 및 제어를 용이하게 한다.IF transmitter according to the present invention includes a transmission relay connection (11); IF combiner 12; Band pass filter 13 (BPF); And a directional coupler (14), wherein the IF receiver includes an directional coupler (21) for receiving an IF carrier signal to guide the reception direction and providing an echo output for the monitor; A band pass filter 22 (BPF) for removing noise by passing only a predetermined frequency band at the output of the directional coupler 21; An IF divider 23 for distributing the band-passed IF carrier signals to equal gain distribution; And an unused IF signal distributed according to the IF control signal is composed of a receiving relay connecting portion 24 which terminates, so that the relay unit terminates the corresponding IF signal according to the IF control signal to enable equal gain distribution. It provides easy monitoring and control by providing echo signal to the directional coupler connected to the side.

Description

An apparatus for transmitting and receiving IF signals in DAMA-SCPC

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 IF 송신부를 도시한 블럭도,1 is a block diagram showing an IF transmitter according to the present invention;

제2도는 본 발명에 따른 IF 수신부를 도시한 블럭도,2 is a block diagram showing an IF receiver according to the present invention;

제3도는 제1도 및 제2도에 도시된 릴레이 접속부의 예이다.3 is an example of the relay connection shown in FIGS. 1 and 2.

Claims

In the IF transmitter that combines a plurality of intermediate frequency signals and outputs one intermediate frequency signal, if there are no intermediate frequency signals by receiving a plurality of intermediate frequency signals and receiving IF control signals corresponding to each intermediate frequency signal Transmission relay connection means for terminating the intermediate frequency signal input end; An IF combiner which receives the output of the transmitting relay connection means and mixes the plurality of IF signals so as to have equal gain distribution; A band pass filter for removing noise by passing only a predetermined frequency band at the output of the IF combiner; And a directional coupler for directing the output of the bandpass filter to a transmitting side and providing an echo output for the monitor.

An IF receiver for receiving one intermediate frequency signal and distributing the signal into a plurality of intermediate frequency signals, the IF receiver comprising: a directional coupler for receiving an IF carrier signal in a receiving direction and providing an echo output for a monitor; A band pass filter for removing noise by passing only a predetermined frequency band at an output of the directional coupler; An IF divider for distributing the band-passed IF carrier signals to equal gain distribution; And an IF relay signal distributed according to the IF control signal, wherein the unused IF signal is configured as a receiving relay connection means for terminating the IF signal.

※ Note: The disclosure is based on the initial application.