KR960701546A - I/Q 직교 위상 변조기 회로(I/Q quadraphase modulator circuit) - Google Patents

I/Q 직교 위상 변조기 회로(I/Q quadraphase modulator circuit) Download PDF

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Publication number
KR960701546A
KR960701546A KR1019950704051A KR19950704051A KR960701546A KR 960701546 A KR960701546 A KR 960701546A KR 1019950704051 A KR1019950704051 A KR 1019950704051A KR 19950704051 A KR19950704051 A KR 19950704051A KR 960701546 A KR960701546 A KR 960701546A
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KR
South Korea
Prior art keywords
signals
multiplier
quadrature mixer
quadrature
phase
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KR1019950704051A
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English (en)
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KR100335713B1 (ko
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페르시코 챨즈
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프레데릭 얀 스미트
필립스 일렉트로닉스 엔.브이.
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/542—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes
    • H03C1/545—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes using bipolar transistors
    • 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
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1433—Balanced arrangements with transistors using bipolar transistors
    • 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
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1458—Double balanced arrangements, i.e. where both input signals are differential
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0004—Circuit elements of modulators
    • H03C2200/0025—Gilbert multipliers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0058—Quadrature arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0066—Reduction of carrier leakage or the suppression of the carrier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/229—Homodyne or synchrodyne circuits using at least a two emittor-coupled differential pair of transistors
    • 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
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

통상 LO 입력 직교 신호인 위상 에러를 보정하는 I/Q 직교 위상 변조기/복조기 회로. 이 회로는, 그 하부 포트에 I 및 Q 신호가 인가되고, 그 상부 포트에 합 및 차 신호, 한정 신호, 직교 신호 및 미분 신호가 인가되는 한쌍의 길버트 셀 배율기를 사용한다. 그 결과, 회로는 LO 위상 에러에 덜 민감해지고 따라서 통상 하나의 길버트 셀 배율기를 사용하는 종래 회로에 비해 측대역(잔상) 억제를 개선시킨다.

Description

I/Q 직교 위상 변조기 회로(I/Q quadraphase modulator circuit)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명에 따라 직교 위상 변조기/복조기 회로로 사용된 믹서의 한 형태의 개략적 회로도

Claims (7)

  1. (a) 제1 및 제2배율기 수단과, (b) 상기 제1배율기 수단에 I 입력 신호를 인가하는 수단 및, (c) 상기 제2배율기 수단에 Q 입력 신호를 인가하는 수단, 을 포함하는 I/Q 직교 위상 믹서에 있어서, (d) 상기 제1 배율기 수단에 서로 위상이 반대된 신호 V1 및 V2를 공급하는 수단과, (e) 상기 제2배율기 수단에, 서로 위상이 반대이고 V1 및 V2 에 대해 90°위상차가 나는 신호 V3 및 V4를 공급하는 수단 및, (f) 상기 제1배율기 수단과 상기 제2배율기 수단의 출력 신호를 결합시키는 수단을 포함하는 것을 특징으로 하는 I/Q 직교 위상 믹서.
  2. 제1항에 있어서, 상기 제1 및 제2배율기 수단은 길버트 셀 배율기인 것을 특징으로 하는 I/Q 직교 위상 믹서.
  3. 제2항에 있어서, 각 길버트 셀 배율기는 제3차동쌍과 직렬 접속된 제1 및 제2차동상을 포함하고, 상기 신호들이 이 제1, 제2및 제3차동쌍에 각각 인가되는 것을 특징으로 하는 I/Q 직교 위상 믹서.
  4. 제1항 내지 3항 중 어느 한 항에 있어서, 상기 결합 수단이 합산 수단을 포함하는 것을 특징으로 하는 I/Q 직교 위상 믹서.
  5. 제1항 내지 4항 중 어느 한 항에 있어서, 수신 및 처리 수단은 국소 발진 신호의 진폭을 한정하는 수단을 포함하는 것을 특징으로 하는 I/Q 직교 위상 믹서.
  6. 제1항 내지 5항 중 어느 한 항에 있어서, 상기 수신 및 처리 수단은 90°위상 시프터를 포함하는 것을 특징으로 하는 I/Q 직교 위상 믹서.
  7. 제1항 내지 6항 중 어는 한 항에 따른 믹서를 포함하는 것을 특징으로 하는 송수신기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950704051A 1994-01-25 1995-01-20 I/q직교위상변조기회로 KR100335713B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US186,398 1994-01-25
US08/186,398 US5574755A (en) 1994-01-25 1994-01-25 I/Q quadraphase modulator circuit
US186398 1994-01-25
PCT/IB1995/000047 WO1995020284A1 (en) 1994-01-25 1995-01-20 I/q quadraphase modulator circuit

Publications (2)

Publication Number Publication Date
KR960701546A true KR960701546A (ko) 1996-02-24
KR100335713B1 KR100335713B1 (ko) 2002-11-13

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Country Status (7)

Country Link
US (1) US5574755A (ko)
EP (1) EP0691057B1 (ko)
JP (1) JPH08508632A (ko)
KR (1) KR100335713B1 (ko)
CN (1) CN1083197C (ko)
DE (1) DE69520983T2 (ko)
WO (1) WO1995020284A1 (ko)

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Also Published As

Publication number Publication date
EP0691057B1 (en) 2001-05-23
JPH08508632A (ja) 1996-09-10
KR100335713B1 (ko) 2002-11-13
EP0691057A1 (en) 1996-01-10
DE69520983D1 (de) 2001-06-28
US5574755A (en) 1996-11-12
DE69520983T2 (de) 2002-01-10
CN1124554A (zh) 1996-06-12
WO1995020284A1 (en) 1995-07-27
CN1083197C (zh) 2002-04-17

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