KR930018874A

KR930018874A - Broadband matching system

Info

Publication number: KR930018874A
Application number: KR1019920001799A
Authority: KR
Inventors: 염보선
Original assignee: 백중영; 금성통신 주식회사
Filing date: 1992-02-07
Publication date: 1993-09-22

Abstract

본 발명은 수신부의 광대역 정합시스템에 관한 것으로, 특히 수신부의 고주파 신호를 중간주파 신호로 변환 출력하는 혼합부(3)와 제2증폭부(5)사이에 상기 혼합부(3)의 출력중 중간주파신호 이외의 성분을 제거하여 전체 수신부의 잡음지수가 증가하는 것을 방지하는 광대역저항 종단접속부(7)를 연결한 것으로, 인덕턴스와 캐패시턴 스로된 직렬공진회로 (a)(b) 및 병렬공진회로 (e)(f)를 연결하고 그 사이에 상기 혼합부(3)의 출력단과 제2증폭부(5)의 입력단과 동일한 임피던스 값을 갖는 저항(c)(d)으로 연결 구성한다.The present invention relates to a wideband matching system of a receiver, and in particular, an intermediate part of the output of the mixer (3) between a mixer (3) and a second amplifier (5) for converting and outputting a high frequency signal of a receiver into an intermediate frequency signal. A series resonant circuit (7) and parallel resonant circuit, in which inductance and capacitance are connected, are connected to a broadband resistance terminator (7) which removes components other than the frequency signal to prevent the noise figure of the entire receiver from increasing. (E) and (f) are connected between the output terminal of the mixing section 3 and the resistor (c) (d) having the same impedance value as the input terminal of the second amplifier section 5 therebetween.

Description

Broadband matching system

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

제2도는 본 발명 수신부의 블럭구성도.2 is a block diagram of the receiver of the present invention.

제3도는 제2도의 광대역 저항 종단 접속부의 상세구성도.3 is a detailed block diagram of the broadband resistor termination of FIG. 2;

제4도는 제3도의 공진주파수에서의 동작원리도.4 is an operating principle diagram of the resonance frequency of FIG.

제5도는 제3도의 공진주파수이외에서의 동작원리도.5 is an operation principle diagram other than the resonant frequency of FIG.

Claims

In the receiving unit where the high frequency signal received from the antenna is mixed with the oscillation frequency signal in the mixing unit 3 and converted into the intermediate frequency signal, the mixing unit 3 and the second amplifier 5 for amplifying the intermediate frequency signal. Broadband matching termination system characterized in that the broadband resistance terminating portion (7) for stabilizing the operation of the second amplifier (5) by removing components other than the intermediate frequency signal generated by the mixing section (3) in between.

2. The broadband resistor terminator (7) according to claim 1, comprising a series resonant circuit (a) (b) consisting of inductance and capacitance between the output end of the mixing section 3 and the input end of the second amplifier section 5; Parallel resonant circuit (e) (f) is connected between the output terminal of the mixing section (3) and the input terminal of the second amplifier (5) having the same impedance value (c) (d) is composed of Broadband matching system.

2. The broadband resistor termination portion 7 according to claim 1, wherein the capacitance and inductance of the series resonant circuits (a) and (b) and the parallel resonant circuits (e) and (f) are respectively an open circuit and a short circuit at components other than the intermediate frequency. It operates like a circuit, and the output terminal of the mixing section 3 and the input terminal of the second amplifying section 5 are terminated and isolated from each other as the load of the resistor (c) (d), so that signals other than the intermediate frequency cannot pass. A broadband matching system.

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