KR970055837A - Wireless repeater - Google Patents

Wireless repeater Download PDF

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Publication number
KR970055837A
KR970055837A KR1019950067436A KR19950067436A KR970055837A KR 970055837 A KR970055837 A KR 970055837A KR 1019950067436 A KR1019950067436 A KR 1019950067436A KR 19950067436 A KR19950067436 A KR 19950067436A KR 970055837 A KR970055837 A KR 970055837A
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KR
South Korea
Prior art keywords
signal
local oscillator
bandpass filter
wireless repeater
amplifier
Prior art date
Application number
KR1019950067436A
Other languages
Korean (ko)
Other versions
KR100245188B1 (en
Inventor
권성준
Original Assignee
이우복
사단법인 고등기술연구원 연구조합
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Priority to KR1019950067436A priority Critical patent/KR100245188B1/en
Publication of KR970055837A publication Critical patent/KR970055837A/en
Application granted granted Critical
Publication of KR100245188B1 publication Critical patent/KR100245188B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H01P1/38—Circulators
    • H01P1/383—Junction circulators, e.g. Y-circulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

본 발명은 무선중계기 장치에 관한 것으로, 신호를 수신하는 안테나에서 액세스포인트의 신호와 무선중계기의 신호에 필요한 주파수의 대역만을 통과시키는제1밴드패스 필터와, 상기 제1밴드패스 필터에서 다른 경로로는 전송되지 않는 특성을 가지고 각 신호에 대하여 한방향으로만 전송이 가능한 서큘레이터와, 상기 서큘레이터에서 신호를 증폭하는 저잡음 증폭기와, 상기 저잡음 증폭기에서 수신 입력 신호에 혼합시켜 중간주파수 신호를 만드는 제1로컬 오실레이터에서 나온 신호와 상기 저잡음 증폭기에서 나온 신호를 더하는 업컨버터와, 상기 업컨버터에서 사용 가능한 주파수 대만을 선택하는 제2밴드패스 필터와, 상기 제2밴드패스 필터에서 나온 신호를 증폭시키는 증폭기와, 상기 증폭기에서 수신 입력 신호에 혼합시켜 중간주파수 신호를 만드는 제2로컬 오실레이터에서 나온 신호와 상기 증폭기에서 나온 신호를 감하는 다운 컨버터와, 송수신 영역을 확장하기 위해 업 컨버터와 다운 컨버터를 포함하여 서로 다른 주파수에 의하여 발생할 수 있는 간섭을 배재하여 별도의 액세스 포인트 없이도 무선중계기를 사용하여 통신을 할 수 있다.The present invention relates to a wireless repeater device, comprising: a first bandpass filter for passing only a band of frequencies necessary for a signal of an access point and a signal of a wireless repeater in an antenna for receiving a signal, and a different path from the first bandpass filter; Is a circulator capable of transmitting in only one direction with respect to each signal, a low noise amplifier amplifying the signal in the circulator, and a first frequency mixing the received input signal in the low noise amplifier to produce an intermediate frequency signal. An upconverter that adds a signal from a local oscillator and a signal from the low noise amplifier, a second bandpass filter that selects the frequency available in the upconverter, an amplifier that amplifies the signal from the second bandpass filter, The intermediate frequency signal is mixed with the received input signal by the amplifier. Separate access by subtracting the interference that can be caused by different frequencies, including up converter and down converter to subtract the signal from the second local oscillator to create and subtract the signal from the amplifier, and to extend the transmit / receive range You can use a wireless repeater to communicate without points.

Description

무선 중계기장치Wireless repeater

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

제2도는 본 발명의 무선중계기를 이용한 무선랜의 상태도.2 is a state diagram of a wireless LAN using a wireless repeater of the present invention.

Claims (3)

신호를 수신하는 안테나에서 액세스포인트의 신호와 무선중계기의 신호에 필요한 주파수의 대역만을 통과시키는 제1밴드패스 필터와, 상기 제1밴드패스 필터에서 다른 경로로는 전송되지 않는 특성을 가지고 각 신호에 대하여 한방향으로만 전송이 가능한 서큘레이터와, 상기 서뮬레이터에서 신호를 증폭하는 저잡음 증폭기와, 상기 저잡음 증폭기에서 수신 입력 신호에 혼합시켜 중간주파수 신호를 만드는 제1로컬 오실레이터에서 나온 신호와 상기 저잡음 증폭기에서 나온 신호를 더하는 업컨버터와, 상기 업컨버터에서 사용 가능한 주파수 대역만을 선택하는 제2밴드패스 필터와, 상기 제2밴드패스 필터에서 나온 신호를 증폭시키는 증폭기와, 상기 증폭기에서 수신 입력 신호에 혼합시켜 중간주파수 신호를 만드는 제2로컬 오실레이터에서 나온 신호와 상기 증폭기에서 나온 신호를 감하는 다운 컨버터와, 상기 다운 컨버터에서 사용 가능한 주파수 대역만을 선택하는 제3밴드패스 필터와, 상기 제3밴드패스 필터에서 나온 신호를 증폭하는 파워 증폭기를 포함하는 무선중계기 장치.A first bandpass filter that passes only a band of a frequency required for an access point signal and a signal of a wireless repeater at an antenna receiving the signal, and a characteristic of not transmitting to another path from the first bandpass filter A circulator capable of transmitting in only one direction, a low noise amplifier amplifying a signal in the emulator, a signal from a first local oscillator which is mixed with a received input signal in the low noise amplifier to produce an intermediate frequency signal, and the low noise amplifier An upconverter that adds the output signal; Scenes from a second local oscillator producing an intermediate frequency signal And a down converter for subtracting the signal from the amplifier, a third bandpass filter for selecting only a frequency band usable by the down converter, and a power amplifier for amplifying the signal from the third bandpass filter. Device. 제1항에 있어서, 상기 업 컨버터는 입력신호에 따라 액세스포인트에 의한 신호와 제1로컬 오실레이터를 연산하거나 무선중계기에 의한 신호와 제1로컬 오실레이터를 연산하는 것을 특징으로 하는 무선중계기 장치.The apparatus of claim 1, wherein the up-converter calculates a signal by an access point and a first local oscillator or a signal by a wireless repeater and a first local oscillator according to an input signal. 제1항에 있어서, 상기 다운 컨버터는 제2로컬오실레이터에서 액세스포인트에 의한 신호와 제1로컬오실레이터를 감산하거나 제2로컬오실레이터에서 무선중계기에 의한 신호와 제1로컬 오실레이터를 감산하는 것을 특징으로 하는 무선중계기 장치.The method of claim 1, wherein the down converter subtracts the signal from the access point and the first local oscillator in the second local oscillator, or the signal from the wireless repeater and the first local oscillator in the second local oscillator. Wireless repeater device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950067436A 1995-12-29 1995-12-29 Wireless relay apparatus KR100245188B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950067436A KR100245188B1 (en) 1995-12-29 1995-12-29 Wireless relay apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950067436A KR100245188B1 (en) 1995-12-29 1995-12-29 Wireless relay apparatus

Publications (2)

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KR970055837A true KR970055837A (en) 1997-07-31
KR100245188B1 KR100245188B1 (en) 2000-02-15

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Application Number Title Priority Date Filing Date
KR1019950067436A KR100245188B1 (en) 1995-12-29 1995-12-29 Wireless relay apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008069357A1 (en) * 2006-12-08 2008-06-12 Kmw Inc. Low noise amplifier for mobile base station
KR100898050B1 (en) * 2006-01-03 2009-05-19 삼성전자주식회사 Apparatus and method for transparent relay in multi-hop relay cellular network
KR100975698B1 (en) * 2005-06-13 2010-08-12 삼성전자주식회사 Relay system and method for cellular communication

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990018817A (en) * 1997-08-28 1999-03-15 신윤식 Communication method and device for WLL and IMT-2000 signals using broadband subscriber line subscriber system
KR100551893B1 (en) * 1998-11-20 2006-06-22 주식회사 팬택앤큐리텔 Wireless Subscriber Network Subscriber Registration Device with Wireless Private Switching Adapter
KR20010089019A (en) * 2000-03-20 2001-09-29 고영숙 Repeater of mobile-system
KR100886678B1 (en) 2004-06-29 2009-03-04 에스케이텔레시스 주식회사 Wireless Internet Connection System

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100975698B1 (en) * 2005-06-13 2010-08-12 삼성전자주식회사 Relay system and method for cellular communication
KR100898050B1 (en) * 2006-01-03 2009-05-19 삼성전자주식회사 Apparatus and method for transparent relay in multi-hop relay cellular network
WO2008069357A1 (en) * 2006-12-08 2008-06-12 Kmw Inc. Low noise amplifier for mobile base station

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