DE69634290D1 - DC offset compensation device - Google Patents

DC offset compensation device

Info

Publication number
DE69634290D1
DE69634290D1 DE69634290T DE69634290T DE69634290D1 DE 69634290 D1 DE69634290 D1 DE 69634290D1 DE 69634290 T DE69634290 T DE 69634290T DE 69634290 T DE69634290 T DE 69634290T DE 69634290 D1 DE69634290 D1 DE 69634290D1
Authority
DE
Germany
Prior art keywords
compensation device
offset compensation
offset
compensation
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 - Lifetime
Application number
DE69634290T
Other languages
German (de)
Other versions
DE69634290T2 (en
Inventor
Yoshio Urabe
Hitoshi Takai
Hidetoshi Yamasaki
Akihiro Tatsuta
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP14758096A external-priority patent/JP4091671B2/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE69634290D1 publication Critical patent/DE69634290D1/en
Application granted granted Critical
Publication of DE69634290T2 publication Critical patent/DE69634290T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/008—Compensating DC offsets
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/165—Equalizers; Volume or gain control in limited frequency bands

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Dc Digital Transmission (AREA)
  • Picture Signal Circuits (AREA)
DE69634290T 1995-08-08 1996-07-16 DC offset compensation device Expired - Lifetime DE69634290T2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP20239195 1995-08-08
JP20239195 1995-08-08
JP14758096 1996-06-10
JP14758096A JP4091671B2 (en) 1995-08-08 1996-06-10 DC offset compensator

Publications (2)

Publication Number Publication Date
DE69634290D1 true DE69634290D1 (en) 2005-03-10
DE69634290T2 DE69634290T2 (en) 2006-01-12

Family

ID=34196325

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69634290T Expired - Lifetime DE69634290T2 (en) 1995-08-08 1996-07-16 DC offset compensation device

Country Status (2)

Country Link
KR (1) KR100278816B1 (en)
DE (1) DE69634290T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8559559B2 (en) 2002-06-20 2013-10-15 Qualcomm, Incorporated Method and apparatus for compensating DC offsets in communication systems

Also Published As

Publication number Publication date
KR970013819A (en) 1997-03-29
DE69634290T2 (en) 2006-01-12
KR100278816B1 (en) 2001-01-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP