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KR970055702A - Intermediate Frequency Sharing Wireless Communication System - Google Patents

Intermediate Frequency Sharing Wireless Communication System Download PDF

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Publication number
KR970055702A
KR970055702A KR1019950072294A KR19950072294A KR970055702A KR 970055702 A KR970055702 A KR 970055702A KR 1019950072294 A KR1019950072294 A KR 1019950072294A KR 19950072294 A KR19950072294 A KR 19950072294A KR 970055702 A KR970055702 A KR 970055702A
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South Korea
Prior art keywords
intermediate frequency
signal
transmission
wireless communication
communication system
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KR1019950072294A
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Korean (ko)
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KR100212054B1 (en
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김진자
박정규
최기룡
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김광호
삼성전자 주식회사
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Publication of KR970055702A publication Critical patent/KR970055702A/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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0067—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
    • H04B1/0071—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands using a common intermediate frequency for more than one band
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

무선 통신시스템Wireless communication system

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

소형 경량화 및 저 가격화를 실현한 무선 통신시스템을 제공함에 있다.The present invention provides a wireless communication system that realizes small size, light weight, and low cost.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

송신 혹은 수신상태에 따라 절환되는 다수의 스위치로써 송신기와 수신기가 중간주파수를 공유할 수 있도록 구성함을 특징으로 한다.A plurality of switches that are switched according to the transmission or reception state, characterized in that the transmitter and the receiver is configured to share the intermediate frequency.

4. 발명의 중요한 용도4. Important uses of the invention

송·수신기가 중간주파수를 공유하도록 하는 데 이용한다.Used to allow transmitters and receivers to share intermediate frequencies.

Description

중간주파수 공유형무선 통신 시스템Medium Frequency Shared Wireless Communication System

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

제3도는 본 발명에 따른 중간주파수 공유형무선 통신 시스템의 구성도.3 is a block diagram of an intermediate frequency shared wireless communication system according to the present invention.

Claims (16)

안테나를 구비한 무선 통신시스템에 있어서 반송파를 신호파에 따라 변화시켜 변조파를 출력하는 변조기 상기 변조파에서 중간주파수 대역의 신호만을 검출하는 중간주파수 대역통과 필터, 상기 중간주파수 대역의 신호와 국부발진주파수를 믹싱하는 제1믹서, 상기 변조기와 상기 중간주파수 대역통과필터 입력단 사이에 접속된 제1송수신절환스위치, 상기 중간주파수 대역통과필터 출력단과 상기 제1믹서 사이에 접속된 제2송수신 절환스위치, 상기 믹싱된 신호로부터 송출 대역의 신호만을 검출하는 제1레디오프리컨시 대역통과필터, 상기 검출된 송출 대역의 신호를 일정 정도 증폭하는 전력증폭기, 상기 안테나에 접속되어 송수신상태에 따라 접속상태가 절환되며 송신시에는 상기 전력증폭기와 상기 안테나를 접속하는 제3송수신절환스위치로 이루어진 송신부와;상기 송신기와 상기 제1~제3송수신절환스위치 및 중간주파수 대역 통과필터를 공유하며 수신시 상기 제3송수신절환스위치에 의해 상기 안테나에 접속되어 상기 안테나로부터 전달되는 신호를 선형 증폭하는 선형증폭기, 상기 선형 증폭기 신호로부터 수신 대역의 신호만을 검출하는 제2레디오프리컨시 대역통과필터, 상기 수신대역의 신호와 국부발진주파수를 믹싱하는 제2믹서, 수시상태로 절환된 상기 제1 및 제2송수신절환스위치와 상기 중간주파수 대역통과필터로써 상기 믹싱된 신호로부터 중간주파수 대역의 신호인 피변조파가 검출되면 상기 피변조파에서 신호파를 분리하는 복조기로 이루어진 수신부로 구성됨을 특징으로 하는 중간주파수 공유형무선 통신 시스템.In a wireless communication system having an antenna, a modulator for outputting a modulated wave by changing a carrier wave according to a signal wave, an intermediate frequency bandpass filter detecting only a signal of an intermediate frequency band from the modulated wave, a signal of the intermediate frequency band and a local oscillation A first mixer for mixing frequencies, a first transmit / receive switch connected between the modulator and the intermediate frequency bandpass filter input terminal, a second transmit / receive switch connected between the intermediate frequency bandpass filter output terminal and the first mixer; A first radio frequency bandpass filter that detects only a signal of a transmission band from the mixed signal, a power amplifier that amplifies the signal of the detected transmission band to a certain degree, and is connected to the antenna to switch a connection state according to a transmission / reception state And transmits to a third transmit / receive switch for connecting the power amplifier and the antenna. A transmission unit configured to share the first to third transmission / reception switches and the intermediate frequency bandpass filter with the transmitter, and linearly amplify a signal transmitted from the antenna by being connected to the antenna by the third transmission / reception switch; A linear amplifier, a second radio frequency bandpass filter for detecting only a signal of a reception band from the linear amplifier signal, a second mixer for mixing a signal of the reception band and a local oscillation frequency, and the first switching state at any time. And a receiver comprising a demodulator for separating a signal wave from the modulated wave when a modulated wave, which is a signal of an intermediate frequency band, is detected from the mixed signal by a second transmit / receive switch and the intermediate frequency bandpass filter. Frequency sharing wireless communication system. 제1항에 있어서 상기 전력증폭기가 저력 램핑 기능을 가짐을 특징으로 하는 중간주파수 공유형무선 통신 시스템.2. The system of claim 1, wherein said power amplifier has a low power ramping function. 제1항에 있어서 상기 중간주파수가 246MHz임을 특징으로 하는 중간주파수 공유형무선 통신 시스템.The intermediate frequency shared wireless communication system of claim 1, wherein the intermediate frequency is 246 MHz. 제1항에 있어서 상기 국부발진 주파수가 송신용은 1136~1161MHz이고, 수신용은 1181~1206MHz임을 특징으로 하는 중간주파수 공유형무선 통신 시스템.The intermediate frequency shared wireless communication system of claim 1, wherein the local oscillation frequency is 1136-1116 MHz for transmission and 1181-1206 MHz for reception. 제1항에 있어서 상기 국부발진 주파수가 송신용은 1126~1161MHz이고, 수신용은 1171~1206MHz임을 특징으로 하는 중간주파수 공유형무선 통신 시스템.The intermediate frequency shared wireless communication system of claim 1, wherein the local oscillation frequency is 1126-1116 MHz for transmission and 1171-1206 MHz for reception. 제1항에 있어서 상기 중간주파수 대역통과필터를 SAW필터로 구성됨을 특징으로 하는 중간주파수 공유형무선 통신 시스템.The intermediate frequency shared wireless communication system according to claim 1, wherein the intermediate frequency bandpass filter comprises a SAW filter. 제1항에 있어서 상기 제3송수신절환스위치와 전력증폭기 사이에 필터를 더 구비함을 특징으로 하는 중간주파수 공유형무선 통신 시스템.The intermediate frequency shared wireless communication system of claim 1, further comprising a filter between the third transmit / receive switch and a power amplifier. 제7항에 있어서 상기 필터를 SAW필터로 구성함을 특징으로 하는 중간주파수 공유형무선 통신 시스템.8. The intermediate frequency shared wireless communication system according to claim 7, wherein the filter is a SAW filter. 안테나를 구비한 무선 통신시스템에 있어서 반송파를 신호파에 따라 변화시켜 변조파를 출력하는 변조기 상기 변조파에서 중간주파수 대역의 신호만을 검출하는 중간주파수 대역통과 필터, 상기 변조기와 상기 중간주파수 대역통과필터 입력단 사이에 접속된 제1송수신절환스위치, 소정의 입력신호와 제2국부발진주파수를 믹싱하는 믹서 송신시 상기 중간주파수 대역통과필터의출력단과 상기 믹서의 입력단을 접속하는 제2 및 제3 송수신절환스위치, 상기 믹싱된 신호로부터 송출 대역의 신호만을 검출하는 제1레디오프리컨시 대역통과필터, 상기 제1믹서의 출력단과 상기 제1레디오프리컨시 대역통과필터 사이에 접속된 제4송수신절환스위치, 상기 검출된 송출 대역의 신호를 일정 정도 증폭하는 전력증폭기, 상기 안테나에 접속되어 송수신상태에 따라 접속상태가 절환되며 송신시에는 상기 전력증폭기와 상기 안테나를 접속하는 제5송수신절환스위치로 이루어진 송신부와; 상기 송신기와 상기 제1~제5송수신절환스위치 상기 중간주파수대역통과필터 및 상기 믹서를 공유하며 수신시 상기 제5송수신절환스위치에 의해 상기 안테나에 접속되어 상기 안테나로부터 전달되는 신호를 선형 증폭하는 선형 증폭기, 상기 선형 증폭한 신호로부터 수신 대역의 신호만을 출력하는 제2레디오프리컨시 대역통과필터, 수신상태로 절화된 상기 제3송수신절환스위치를 통해 상기믹서에서 상기 수신 대역의 신호와 제2국부발진신호를 믹싱한 신호가 수신상태로 절환된 상기 제4송수신절환스위치와 상기 중간주파수 대역통과 필터를 거쳐 중간주파수 대역의 신호인 피변조파가 검출되면 상기 피벼조파에서 신호파를 분리하는 복조기로 이루어진 수신부로 구성됨을 특징으로 하는 중간주파수 공유형무선 통신 시스템.A modulator for outputting a modulated wave by changing a carrier wave according to a signal wave in a wireless communication system having an antenna An intermediate frequency bandpass filter detecting only a signal of an intermediate frequency band from the modulated wave, The modulator and the intermediate frequency bandpass filter A first transmit / receive switch connected between input terminals, and second and third transmit / receive switches for connecting the output terminal of the intermediate frequency bandpass filter and the input terminal of the mixer during a mixer transmission mixing a predetermined input signal with a second local oscillation frequency. A switch, a first radio frequency bandpass filter for detecting only a signal of a transmission band from the mixed signal, and a fourth transmission / reception switch connected between an output terminal of the first mixer and the first radio frequency bandpass filter A power amplifier for amplifying a signal of the detected transmission band to a predetermined level, La connection state is switched, and at the time of transmission and the transmission unit consisting of the fifth transmission and reception change-over switch for connecting the power amplifier and the antenna; A linear linear amplification signal transmitted from the antenna by being connected to the antenna by the fifth transmit / receive switch and sharing the intermediate frequency bandpass filter and the mixer with the transmitter and the first to fifth transmit / receive switch. A second radio frequency bandpass filter for outputting only a signal of a reception band from the linearly amplified signal, and a signal of the reception band and a second local part in the mixer through the third transmission / reception switch switched to a reception state And a demodulator for separating the signal wave from the light harmonic when the modulated wave of the intermediate frequency band is detected through the fourth transmit / receive switch and the intermediate frequency bandpass filter. An intermediate frequency shared wireless communication system, characterized in that consisting of a receiver. 제9항에 있어서 상기 전력증폭기가 전력 램핑 기능을 가짐을 특징으로 하는 중간주파수 공유형무선 통신 시스템.10. The system of claim 9, wherein said power amplifier has a power ramping function. 제9항에 있어서 상기중간주파수가 246MHz임을 특징으로 하는 중간주파수 공유형무선 통신 시스템.10. The system of claim 9, wherein the intermediate frequency is 246 MHz. 제9항에 있어서 상기 국부발진 주파수가 송신용은 1136~1161MHz이고 수신용은 1181~1206MHz임을 특징으로 하는 중간주파수 공유형무선 통신 시스템.10. The system of claim 9, wherein the local oscillation frequency is 1136-1116 MHz for transmission and 1181-1206 MHz for reception. 제9항에 있어서 상기 국부발진 주파수가 송신용은 1126~1161MHz이고 수신용은 1171~1206MHz임을 특징으로 하는 중간주파수 공유형무선 통신 시스템.10. The intermediate frequency shared wireless communication system of claim 9, wherein the local oscillation frequency is 1126-1116 MHz for transmission and 1171-1206 MHz for reception. 제9항에 있어서 상기 중간주파수 대역통과필터를 SAW필터로 구성함을 특징으로 하는 중간주파수 공유형무선 통신 시스템.10. The intermediate frequency shared wireless communication system of claim 9, wherein the intermediate frequency bandpass filter is configured as a SAW filter. 제9항에 있어서 상기 제3송수신절환스위치와 전력증폭기 사이에 필터를 더 구비함을 특징으로 하는 중간주파수 공유형무선 통신 시스템.10. The intermediate frequency shared wireless communication system of claim 9, further comprising a filter between the third transmit / receive switch and a power amplifier. 제15항에 있어서 상기 필터를 SAW필터로 구성함을 특징으로 하는 중간주파수 공유형무선 통신 시스템.16. The intermediate frequency shared wireless communication system according to claim 15, wherein the filter is a SAW filter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950072294A 1995-12-30 1995-12-30 Transceiver circuits with common used inter frequency KR100212054B1 (en)

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KR101075744B1 (en) 2005-01-05 2011-10-21 삼성전자주식회사 Antenna switch circuit

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