KR910010894A - RF receiver circuit of automobile phone - Google Patents

RF receiver circuit of automobile phone Download PDF

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Publication number
KR910010894A
KR910010894A KR1019890016811A KR890016811A KR910010894A KR 910010894 A KR910010894 A KR 910010894A KR 1019890016811 A KR1019890016811 A KR 1019890016811A KR 890016811 A KR890016811 A KR 890016811A KR 910010894 A KR910010894 A KR 910010894A
Authority
KR
South Korea
Prior art keywords
capacitor
transistor
strip line
collector
resistor
Prior art date
Application number
KR1019890016811A
Other languages
Korean (ko)
Other versions
KR920009147B1 (en
Inventor
김봉겸
Original Assignee
정몽헌
현대전자산업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 정몽헌, 현대전자산업 주식회사 filed Critical 정몽헌
Priority to KR1019890016811A priority Critical patent/KR920009147B1/en
Publication of KR910010894A publication Critical patent/KR910010894A/en
Application granted granted Critical
Publication of KR920009147B1 publication Critical patent/KR920009147B1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/06Receivers
    • H04B1/16Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

내용 없음No content

Description

자동차 전화기의 RF수신회로RF receiver circuit of automobile phone

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명의 구성도.3 is a block diagram of the present invention.

제4도는 본발명의 구성중 2단 저잡음 증폭기의 구성도.4 is a configuration diagram of a two-stage low noise amplifier of the present invention.

Claims (6)

안테나(31), 상기 안테나(31)에 연결된 듀플렉서(32), 상기 듀플렉서(33)에 연결된 2단 저잡음 증폭기(33), 상기 2단 저접음 증폭기(33)에 연결된 대역 통과 필터(34), 및 상기 대역 통과 필터(34) 연결된 더블 바란스믹서(35)로 구성된 것을 특징으로 하는 자동차 전화기의 RF수신회로.An antenna 31, a duplexer 32 connected to the antenna 31, a two stage low noise amplifier 33 connected to the duplexer 33, a band pass filter 34 connected to the two stage low noise amplifier 33, And a double balance mixer (35) connected to the band pass filter (34). 제1항에 있어서, 상기 2단 저잡음 증폭기(33)는 스트립 라인(41)및 캐퍼시터(C2)를 각기 직렬로 접속하여 제1트랜지스터(Q1)의 베이스에 접속하고, 상기 트랜지스터(Q1)의 콜렉터에는 스트립 라인(42)과 저항(R3)을 직렬로 연결하며, 상기 저항(R3)은 전원단자로 연결하고, 상기 트랜지스터(Q1)의 콜렉터에 캐퍼시터(C4)및 스트립 라인(43,44)을 각기 직렬로 접속하여 제2트랜지스터(Q2)의 베이스에 접속하고, 상기 제2트랜지스터(Q2)의 콜렉터에 스트립 라인(45)과 저항(R4)을 직렬로 연결하며, 상기 저항(R4)은 전원 단자로 연결되도록 구성된 것을 특징으로 하는 자동차 전환기의 RF수신회로.2. The transistor of claim 1, wherein the two-stage low noise amplifier 33 connects the strip line 41 and the capacitor C2 in series, respectively, to the base of the first transistor Q1, and the collector of the transistor Q1. The strip line 42 and the resistor R3 are connected in series, the resistor R3 is connected to a power supply terminal, and the capacitor C4 and the strip lines 43 and 44 are connected to the collector of the transistor Q1. Each is connected in series and connected to the base of the second transistor Q2, and the strip line 45 and the resistor R4 are connected in series to the collector of the second transistor Q2, and the resistor R4 is a power source. RF receiving circuit of a car switch, characterized in that configured to be connected to the terminal. 제1항에 있어서, 상기더블 바란스 믹서(35)는 다이오드를 사용하여 구성한 것을 특징으로 하는 자동차 전환기의 RF수신회로.The RF receiving circuit of claim 1, wherein the double balance mixer (35) is configured using a diode. 제2항에 있어서, 상기 스트립 라인(41)과 캐퍼시터(C2)사이에 병렬로 캐퍼시터(C1)를 연결한 것을 특징으로 하는 자동차 전화기의 RF수신회로.3. The RF receiver circuit according to claim 2, wherein a capacitor (C1) is connected in parallel between the strip line (41) and the capacitor (C2). 제2항에 있어서, 상기스트립 라인(43)과 상기 스트립 라인(44)사이에 병렬로 캐퍼시터(C5)를 연결한 것을 특징으로 하는 자동차 전환기의 RF수신회로.3. The RF receiving circuit according to claim 2, wherein a capacitor (C5) is connected in parallel between the strip line (43) and the strip line (44). 제2항에 있어서, 상기 제2트랜지스터(Q2)의 콜렉터에 캐퍼시터(C8)를 연결하고 상기 캐퍼시터(C8)는 대역통과 필터(34)에 연결되도록 한 것을 특징으로 하는 자동차 전환기의 RF수신회로.3. The RF receiver circuit according to claim 2, wherein a capacitor (C8) is connected to the collector of the second transistor (Q2) and the capacitor (C8) is connected to a band pass filter (34). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890016811A 1989-11-20 1989-11-20 Radio receiver circuit of mobile phone KR920009147B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890016811A KR920009147B1 (en) 1989-11-20 1989-11-20 Radio receiver circuit of mobile phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890016811A KR920009147B1 (en) 1989-11-20 1989-11-20 Radio receiver circuit of mobile phone

Publications (2)

Publication Number Publication Date
KR910010894A true KR910010894A (en) 1991-06-29
KR920009147B1 KR920009147B1 (en) 1992-10-13

Family

ID=19291826

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890016811A KR920009147B1 (en) 1989-11-20 1989-11-20 Radio receiver circuit of mobile phone

Country Status (1)

Country Link
KR (1) KR920009147B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020078901A (en) * 2001-04-11 2002-10-19 주식회사 팬택앤큐리텔 Low noise amplifier in mobile communication phone

Also Published As

Publication number Publication date
KR920009147B1 (en) 1992-10-13

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