DE69500794T2 - FM-Modulationsverfahren und -schaltung - Google Patents

FM-Modulationsverfahren und -schaltung

Info

Publication number
DE69500794T2
DE69500794T2 DE69500794T DE69500794T DE69500794T2 DE 69500794 T2 DE69500794 T2 DE 69500794T2 DE 69500794 T DE69500794 T DE 69500794T DE 69500794 T DE69500794 T DE 69500794T DE 69500794 T2 DE69500794 T2 DE 69500794T2
Authority
DE
Germany
Prior art keywords
circuit
modulation method
modulation
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69500794T
Other languages
English (en)
Other versions
DE69500794D1 (de
Inventor
Masaki Ichihara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69500794D1 publication Critical patent/DE69500794D1/de
Publication of DE69500794T2 publication Critical patent/DE69500794T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
DE69500794T 1994-07-11 1995-07-11 FM-Modulationsverfahren und -schaltung Expired - Fee Related DE69500794T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6158761A JP2728114B2 (ja) 1994-07-11 1994-07-11 Ｆｍ変調回路

Publications (2)

Publication Number Publication Date
DE69500794D1 DE69500794D1 (de) 1997-11-06
DE69500794T2 true DE69500794T2 (de) 1998-04-02

Family

ID=15678769

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69500794T Expired - Fee Related DE69500794T2 (de) 1994-07-11 1995-07-11 FM-Modulationsverfahren und -schaltung

Country Status (5)

Country Link
US (1) US5521559A (de)
EP (1) EP0692867B1 (de)
JP (1) JP2728114B2 (de)
CA (1) CA2153373C (de)
DE (1) DE69500794T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5745523A (en) * 1992-10-27 1998-04-28 Ericsson Inc. Multi-mode signal processing
JP3024548B2 (ja) * 1996-04-26 2000-03-21 日本電気株式会社 位相変調方法および位相変調装置
US6137826A (en) 1997-11-17 2000-10-24 Ericsson Inc. Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals
US6100827A (en) * 1998-09-11 2000-08-08 Ericsson Inc. Modulation systems and methods that compensate for DC offset introduced by the digital-to-analog converter and/or the low pass filter thereof
KR100259051B1 (ko) * 1997-12-31 2000-06-15 윤종용 직접 씨퀀스 씨디엠에이 이동 통신시스템의 오프-셋 사진위상천이변조장치 및 방법
KR19990074228A (ko) * 1998-03-03 1999-10-05 윤종용 영교차 검출을 이용한 변조장치 및 방법
FR2791506B1 (fr) 1999-03-23 2001-06-22 France Telecom Emetteur radiofrequence a fort degre d'integration et avec annulation d'image, eventuellement auto-calibree
US20030021357A1 (en) * 2001-07-24 2003-01-30 Victor Korol Method and apparatus of zero deflection
US6606010B1 (en) * 2002-01-30 2003-08-12 The Aerospace Corporation Quadrature vestigial sideband digital communications method
KR100457175B1 (ko) * 2002-12-14 2004-11-16 한국전자통신연구원 직교 변조 송신기
JP2005210330A (ja) * 2004-01-21 2005-08-04 Nec Compound Semiconductor Devices Ltd ２値ｆｓｋ変調波データ発生回路および方法
CN100588110C (zh) * 2004-12-16 2010-02-03 Nxp股份有限公司 具有对无线通信设备发射路径的补偿装置的直接转换装置
JP2007027961A (ja) 2005-07-13 2007-02-01 Niigata Seimitsu Kk 変調回路
US10680863B2 (en) * 2015-03-31 2020-06-09 Sony Corporation Modulation apparatus
RU206452U1 (ru) * 2021-02-05 2021-09-13 Олег Владимирович Смирнов Модулятор сигналов обратного рассеяния

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02220537A (ja) * 1989-02-21 1990-09-03 Nippon Telegr & Teleph Corp <Ntt> 直交変調器
JP2575057B2 (ja) * 1989-04-07 1997-01-22 シャープ株式会社 Ｆｍ変調器
JP2542263B2 (ja) * 1989-07-29 1996-10-09 シャープ株式会社 ディジタル式ｆｍ変調器
JPH0813050B2 (ja) * 1989-12-08 1996-02-07 日本電信電話株式会社 ディジタル化直交位相変調器
JPH04238439A (ja) * 1991-01-23 1992-08-26 Sanyo Electric Co Ltd デジタル直交変調器
JPH06188751A (ja) * 1992-12-21 1994-07-08 Toshiba Corp デュアルモード無線送信機

Also Published As

Publication number Publication date
US5521559A (en) 1996-05-28
CA2153373C (en) 1998-12-15
JP2728114B2 (ja) 1998-03-18
DE69500794D1 (de) 1997-11-06
EP0692867B1 (de) 1997-10-01
JPH0823231A (ja) 1996-01-23
CA2153373A1 (en) 1996-01-12
EP0692867A1 (de) 1996-01-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee