CA2058482A1 - Circuit de traitement de signaux de bande de base pour appareil de radiocommunication - Google Patents

Circuit de traitement de signaux de bande de base pour appareil de radiocommunication

Info

Publication number
CA2058482A1
CA2058482A1 CA2058482A CA2058482A CA2058482A1 CA 2058482 A1 CA2058482 A1 CA 2058482A1 CA 2058482 A CA2058482 A CA 2058482A CA 2058482 A CA2058482 A CA 2058482A CA 2058482 A1 CA2058482 A1 CA 2058482A1
Authority
CA
Canada
Prior art keywords
amplifier
amplitude
baseband signal
output
processing circuit
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.)
Granted
Application number
CA2058482A
Other languages
English (en)
Other versions
CA2058482C (fr
Inventor
Koji Iwahashi
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
Koji Iwahashi
Nec Corporation
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 Koji Iwahashi, Nec Corporation filed Critical Koji Iwahashi
Publication of CA2058482A1 publication Critical patent/CA2058482A1/fr
Application granted granted Critical
Publication of CA2058482C publication Critical patent/CA2058482C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • H03G7/08—Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Transmitters (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
CA002058482A 1990-12-29 1991-12-27 Circuit de traitement de signaux de bande de base pour appareil de radiocommunication Expired - Fee Related CA2058482C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2418503A JPH04227123A (ja) 1990-12-29 1990-12-29 無線通信装置
JP2-418503 1990-12-29

Publications (2)

Publication Number Publication Date
CA2058482A1 true CA2058482A1 (fr) 1992-06-30
CA2058482C CA2058482C (fr) 1996-11-26

Family

ID=18526336

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002058482A Expired - Fee Related CA2058482C (fr) 1990-12-29 1991-12-27 Circuit de traitement de signaux de bande de base pour appareil de radiocommunication

Country Status (6)

Country Link
US (1) US5603105A (fr)
EP (1) EP0493956B1 (fr)
JP (1) JPH04227123A (fr)
AU (1) AU647223B2 (fr)
CA (1) CA2058482C (fr)
DE (1) DE69127684T2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2271234A (en) * 1992-10-03 1994-04-06 Motorola Gmbh Amplifier arrangement without over-swing using feedback and limiter
US6418173B1 (en) 1996-11-19 2002-07-09 Matsushita Electric Industrial Co., Ltd. Transmission Apparatus
JP2007173960A (ja) * 2005-12-19 2007-07-05 Nippon Telegr & Teleph Corp <Ntt> 無線通信システムおよび無線通信システムの信号歪み低減方法
CN108141185B (zh) * 2015-10-05 2021-08-03 瑞典爱立信有限公司 包括限幅的放大装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605020A (en) * 1970-07-31 1971-09-14 William B Sullivan Jr Selective automatic audio threshold circuit
US3800237A (en) * 1972-06-28 1974-03-26 Nasa Gated compressor, distortionless signal limiter
US3991370A (en) * 1975-10-03 1976-11-09 John Pate Peak limiter
JPS53117363A (en) * 1977-03-24 1978-10-13 Toshiba Corp Modulator
US4491972A (en) * 1981-05-26 1985-01-01 Motorola, Inc. Radio transmitter modulation control circuitry
JPS639233A (ja) * 1986-06-30 1988-01-14 Kokusai Electric Co Ltd 送信電力の制御検出回路
JPH0771011B2 (ja) * 1989-04-20 1995-07-31 日本電気株式会社 無線通信装置

Also Published As

Publication number Publication date
EP0493956A3 (en) 1992-12-02
JPH04227123A (ja) 1992-08-17
EP0493956B1 (fr) 1997-09-17
DE69127684D1 (de) 1997-10-23
AU9004991A (en) 1992-07-02
CA2058482C (fr) 1996-11-26
AU647223B2 (en) 1994-03-17
EP0493956A2 (fr) 1992-07-08
DE69127684T2 (de) 1998-03-19
US5603105A (en) 1997-02-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed