KR19980048986A - Radio Frequency Reception Circuit of Mobile Communication System Base Station - Google Patents

Radio Frequency Reception Circuit of Mobile Communication System Base Station Download PDF

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Publication number
KR19980048986A
KR19980048986A KR1019960067647A KR19960067647A KR19980048986A KR 19980048986 A KR19980048986 A KR 19980048986A KR 1019960067647 A KR1019960067647 A KR 1019960067647A KR 19960067647 A KR19960067647 A KR 19960067647A KR 19980048986 A KR19980048986 A KR 19980048986A
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South Korea
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board
low noise
mobile communication
signal
communication system
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KR1019960067647A
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Korean (ko)
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KR100221946B1 (en
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정유진
김대원
오영주
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정장호
엘지정보통신 주식회사
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Publication of KR19980048986A publication Critical patent/KR19980048986A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]

Abstract

본 발명의 목적은 여파특성이 양호한 대역통과여파기의 실장공간을 확보 할 수 있는 이동통신시스템 기지국의 무선주파수 수신회로를 제공하는 데 있다.An object of the present invention is to provide a radio frequency reception circuit of a base station of a mobile communication system capable of securing a mounting space of a band pass filter having good filter characteristics.

본 발명에 따른 이동통신시스템 기지국의 무선주파수 수신회로는 가입자 단말기로부터 송신된 신호를 수신하는 수신안테나(11)와; 상기 수신안테나(11)에 접속하여 신호의 일부를 검출하고 제 1 보드(16)에 실장된 방향성결합기(12)와; 상기 방향성결합기(12)에 접속하여 수신안테나(11)에서 수신한 신호중 다수의 주파수대역신호만을 통과시키고 제 1 보드(16)에 실장된 멀티플렉서(Multiplexer)형 대역통과필터(13)와; 상기 대역통과필터(13)에 접속하여 여파된 수신신호를 저잡음 증폭하고 제 2 보드(17)에 실장된 저잡음증폭기(Low Noise Amplifier: 14)와 상기 저잡음증폭기(14)에 접속되어 저잡음증폭기(14)에서 증폭된 신호를 디지탈 신호로 변조한 후 동일한 주파수의 반송파신호 FA(Frequency Allocation)1, FA2,...., FAn로 분배하여 출력하고 제 2 보드(17)에 실장된 N경로 분배기(N Way SPLITTER:15)를 포함한다.A radio frequency reception circuit of a base station of a mobile communication system according to the present invention includes a reception antenna (11) for receiving a signal transmitted from a subscriber station; A directional coupler (12) connected to the receiving antenna (11) to detect a part of the signal and mounted on the first board (16); A multiplexer type band pass filter (13) connected to the directional coupler (12) to pass only a plurality of frequency band signals among the signals received at the reception antenna (11) and mounted on the first board (16); The low noise amplifier 14 connected to the band pass filter 13 is connected to the low noise amplifier 14 and the low noise amplifier 14 mounted on the second board 17 to low noise amplify the received signal. N-path divider (modulated signal) amplified by digital signal and then distributed to carrier signals FA (Frequency Allocation) 1, FA2, ..., FAn of same frequency and mounted on second board 17 ( N Way SPLITTER: 15).

Description

이동통신시스템 기지국의 무선주파수 수신회로Radio Frequency Reception Circuit of Mobile Communication System Base Station

본 발명은 코드분할다중 접속방식에 의한 이동통신시스템 관한 것이며, 보다 상세히는 무선주파수 신호를 수신하여 처리하는 이동통신시스템 기지국의 무선주파수 (Radio Frequency:RF)수신회로에 관한 것이다.The present invention relates to a mobile communication system using a code division multiple access method, and more particularly, to a radio frequency (RF) receiving circuit of a base station of a mobile communication system for receiving and processing radio frequency signals.

도 1은 종래의 이동통신시스템 기지국의 무선주파수 수신회로도이다1 is a radio frequency reception circuit diagram of a conventional mobile communication system base station.

도 1를 보면, 종래의 이동통신시스템 기지국의 무선주파수 수신회로는 가입자 단말기로부터 송신된 신호를 수신하는 수신안테나(1)와; 상기 수신안테나(1)에 접속하여 신호의 일부를 검출하고 제 1 보드(6)에 실장된 방향성결합기(2)와; 상기 방향성결합기(2)에 접속하여 수신안테나(1)에서 수신한 신호중 일정주파수대역의 신호만을 통과시키고 제 1 보드(6)에 실장된 대역통과필터(3)와; 상기 대역통과필터(3)에 접속하여 여파된 수신신호를 저잡음 증폭하고 제 1 보드(6)에 실장된 저잡음증폭기(Low Noise Amplifier: 4)와; 상기 저잡음증폭기(4)에 접속되어 저잡음증폭기(4)에서 증폭된 신호를 디지탈 신호로 변조한 후 동일한 주파수의 반송파신호 FA(Frequency Allocation)1, FA2,...., FAn로 분배하여 출력하고 제 2 보드(7)에 실장된 N경로 분배기(N Way SPLITTER:5)를 포함한다.1, a radio frequency reception circuit of a conventional mobile communication system base station includes a reception antenna 1 for receiving a signal transmitted from a subscriber station; A directional coupler (2) connected to the receiving antenna (1) to detect a part of the signal and mounted on the first board (6); A band pass filter (3) connected to the directional coupler (2) to pass only signals of a predetermined frequency band among the signals received from the reception antenna (1) and mounted on the first board (6); A low noise amplifier (4) mounted on the first board (6) for low noise amplification of the received signal by connecting to the band pass filter (3); The signal amplified by the low noise amplifier 4, connected to the low noise amplifier 4, is modulated into a digital signal, and then distributed to the carrier signals FA (Frequency Allocation) 1, FA2, ..., FAn of the same frequency and output. An N path splitter 5 mounted on the second board 7 is included.

종래의 이동통신시스템 기지국의 무선주파수 수신회로에서 방향성 결합기(2), 대역통과필터(3) 및 저잡음증폭기(4)는 동일한 보드(6)에 실장되고, N경로 분배기(5)는 별도의 보드(7)에 실장된다. 또한 대역통과필터(3)는 일정대역에 속하는 신호는 모두 통과시킨다.In the radio frequency reception circuit of the conventional mobile communication system base station, the directional coupler (2), the bandpass filter (3) and the low noise amplifier (4) are mounted on the same board (6), and the N-path divider (5) is a separate board. It is mounted in (7). In addition, the band pass filter 3 passes all signals belonging to a predetermined band.

종래의 이동통신시스템 기지국의 무선주파수 수신회로에 따르면, 이동통신 서비스 지역내에서 이동통신에서 사용하는 주파수와 인접한 주파수의 신호를 사용하는 다른 통신 서비스를 제공하고 있는 경우 대역통과필터는 이동통신에서 사용되는 주파수 신호만을 통과시키도록 여파특성이 개선되어야 하지만 방향성결합기 및 저잡음증폭기와 동일한 보드상에 실장되어 여파특성의 개선에 한계가 있다는 문제점이 있었다.According to a radio frequency reception circuit of a conventional mobile communication system base station, when a mobile communication service area provides another communication service using a signal adjacent to a frequency used for mobile communication, a band pass filter is used for mobile communication. The filter characteristics have to be improved to pass only the frequency signal. However, there is a problem in that the filter characteristics are limited on the same board as the directional coupler and the low noise amplifier.

본 발명의 목적은 여파특성이 양호한 대역통과여파기의 실장공간을 확보 할 수 있는 이동통신시스템 기지국의 무선주파수 수신회로를 제공하는 데 있다.An object of the present invention is to provide a radio frequency reception circuit of a base station of a mobile communication system capable of securing a mounting space of a band pass filter having good filter characteristics.

도 1은 종래의 이동통신시스템 기지국의 무선주파수 수신회로도1 is a radio frequency reception circuit diagram of a conventional mobile communication system base station

도 2는 본 발명에 따른 이동통신시스템 기지국의 무선주파수 수신회로도2 is a radio frequency reception circuit diagram of a mobile communication system base station according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1, 11:수신안테나2, 12:방향성결합기1, 11: receiving antenna 2, 12: directional coupler

3, 13:대역통과여파기4, 14:저잡음증폭기3, 13: bandpass filter 4, 14: low noise amplifier

5, 15:N 경로 분배기6, 7, 16, 17:보드5, 15: N Path Splitter 6, 7, 16, 17: Board

도 2는 본 발명에 따른 이동통신시스템 기지국의 무선주파수 수신회로도이다.2 is a radio frequency reception circuit diagram of a mobile communication system base station according to the present invention.

도 2를 보면, 본 발명에 따른 이동통신시스템 기지국의 무선주파수 수신회로는 가입자 단말기로부터 송신된 신호를 수신하는 수신안테나(11)와; 상기 수신안테나(11)에 접속하여 신호의 일부를 검출하고 제 1 보드(16)에 실장된 방향성결합기(12)와; 상기 방향성결합기(12)에 접속하여 수신안테나(11)에서 수신한 신호중 다수의 주파수대역신호만을 통과시키고 제 1 보드(16)에 실장된 멀티플렉서(Multiplexer)형 대역통과필터(13)와; 상기 대역통과필터(13)에 접속하여 여파된 수신신호를 저잡음 증폭하고 제 2 보드(17)에 실장된 저잡음증폭기(Low Noise Amplifier: 14)와; 상기 저잡음증폭기(14)에 접속되어 저잡음증폭기(14)에서 증폭된 신호를 디지탈 신호로 변조한 후 동일한 주파수의 반송파신호 FA(Frequency Allocation)1, FA2,...., FAn로 분배하여 출력하고 제 2 보드(17)에 실장된 N경로 분배기(N Way SPLITTER:15)를 포함한다.2, a radio frequency reception circuit of a base station of a mobile communication system according to the present invention includes a reception antenna 11 for receiving a signal transmitted from a subscriber station; A directional coupler (12) connected to the receiving antenna (11) to detect a part of the signal and mounted on the first board (16); A multiplexer type band pass filter (13) connected to the directional coupler (12) to pass only a plurality of frequency band signals among the signals received at the reception antenna (11) and mounted on the first board (16); A low noise amplifier 14 connected to the band pass filter 13 to low noise amplify the filtered received signal and mounted on a second board 17; Connected to the low noise amplifier 14 to modulate the signal amplified by the low noise amplifier 14 into a digital signal, and then distributed to the carrier signals FA (Frequency Allocation) 1, FA2, ..., FAn of the same frequency and output. An N path splitter 15 mounted on the second board 17 is included.

본 발명에 따른 이동통신시스템 기지국의 무선주파수 수신회로에서 방향성 결합기(12), 멀피플렉서형 대역통과필터(13)는 동일한 보드(16)에 실장되고, 저잡음증폭기(14) 및 N경로 분배기(15)는 별도의 보드(17)에 실장된다. 또한 대역통과필터(13)는 일정대역내에서 특정 주파수신호만을 통과시켜 여파특성이 양호하다.In the radio frequency reception circuit of the base station of the mobile communication system according to the present invention, the directional coupler 12 and the mulpyplexer type band pass filter 13 are mounted on the same board 16, and the low noise amplifier 14 and the N path divider ( 15 is mounted on a separate board 17. In addition, the band pass filter 13 passes only a specific frequency signal within a predetermined band and has a good filter characteristic.

상술한 바와 같이, 본 발명에서는 종래의 경우와는 달리 저잡음 증폭기를 별도의 보드에 실장하여 대역통과필터를 실장할 수 있는 공간을 확보하고 여파특성이 양호한 멀티플렉서형 대역통과필터를 사용함으로써, 통신 서비스 지역내에서 이동통신에서 사용하는 주파수와 인접한 주파수의 신호를 사용하는 다른 통신 서비스를 제공하고 있는 경우에도 양호한 이동통신서비스를 제공할 수 있다.As described above, in the present invention, unlike the conventional case, a low noise amplifier is mounted on a separate board to secure a space for mounting a band pass filter and to use a multiplexer type band pass filter having good filter characteristics, thereby providing communication service. Even in the case of providing other communication services using signals of frequencies adjacent to those used in mobile communication in the region, good mobile communication services can be provided.

Claims (1)

가입자 단말기로부터 송신된 신호를 수신하는 수신안테나(11)와; 상기 수신안테나(11)에 접속하여 신호의 일부를 검출하고 제 1 보드(16)에 실장된 방향성결합기(12)와; 상기 방향성결합기(12)에 접속하여 수신안테나(11)에서 수신한 신호중 다수의 주파수대역신호만을 통과시키고 제 1 보드(16)에 실장된 멀티플렉서(Multiplexer)형 대역통과필터(13)와; 상기 대역통과필터(13)에 접속하여 여파된 수신신호를 저잡음 증폭하고 제 2 보드(17)에 실장된 저잡음증폭기(Low Noise Amplifier: 14)와 상기 저잡음증폭기(14)에 접속되어 저잡음증폭기(14)에서 증폭된 신호를 디지탈 신호로 변조한 후 동일한 주파수의 반송파신호 FA(Frequency Allocation)1, FA2,...., FAn로 분배하여 출력하고 제 2 보드(17)에 실장된 N경로 분배기(N Way SPLITTER:15)를 포함하는 것을 특징으로 하는 이동통신시스템 기지국의 무선주파수 수신회로.A reception antenna 11 for receiving a signal transmitted from the subscriber station; A directional coupler (12) connected to the receiving antenna (11) to detect a part of the signal and mounted on the first board (16); A multiplexer type band pass filter (13) connected to the directional coupler (12) to pass only a plurality of frequency band signals among the signals received at the reception antenna (11) and mounted on the first board (16); The low noise amplifier 14 connected to the band pass filter 13 is connected to the low noise amplifier 14 and the low noise amplifier 14 mounted on the second board 17 to low noise amplify the received signal. N-path divider (modulated signal) amplified by digital signal and then distributed to carrier signals FA (Frequency Allocation) 1, FA2, ..., FAn of same frequency and mounted on second board 17 ( N Way SPLITTER: 15) radio frequency reception circuit of a mobile communication system base station comprising a.
KR1019960067647A 1996-12-19 1996-12-19 The radio frequency receiving circuit for the base station KR100221946B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100495101B1 (en) * 1997-12-24 2005-09-30 주식회사 팬택앤큐리텔 Intra-base station traffic data multiplex / demultiplexer in wireless subscriber network system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100495101B1 (en) * 1997-12-24 2005-09-30 주식회사 팬택앤큐리텔 Intra-base station traffic data multiplex / demultiplexer in wireless subscriber network system

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