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GB2380078B - FM demodulator having DC offset compensation - Google Patents

FM demodulator having DC offset compensation

Info

Publication number
GB2380078B
GB2380078B GB0122179A GB0122179A GB2380078B GB 2380078 B GB2380078 B GB 2380078B GB 0122179 A GB0122179 A GB 0122179A GB 0122179 A GB0122179 A GB 0122179A GB 2380078 B GB2380078 B GB 2380078B
Authority
GB
United Kingdom
Prior art keywords
demodulator
offset compensation
compensation
offset
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
GB0122179A
Other versions
GB2380078A (en
GB0122179D0 (en
Inventor
Sven Mattisson
Jaap Haartsen
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to GB0122179A priority Critical patent/GB2380078B/en
Publication of GB0122179D0 publication Critical patent/GB0122179D0/en
Priority to US10/234,180 priority patent/US6724247B2/en
Publication of GB2380078A publication Critical patent/GB2380078A/en
Application granted granted Critical
Publication of GB2380078B publication Critical patent/GB2380078B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/06—Demodulating pulses which have been modulated with a continuously-variable signal of frequency- or rate-modulated pulses
    • 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
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0047—Offset of DC voltage or frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0122179A 2001-09-13 2001-09-13 FM demodulator having DC offset compensation Expired - Fee Related GB2380078B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0122179A GB2380078B (en) 2001-09-13 2001-09-13 FM demodulator having DC offset compensation
US10/234,180 US6724247B2 (en) 2001-09-13 2002-09-05 FM demodulator having DC offset compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0122179A GB2380078B (en) 2001-09-13 2001-09-13 FM demodulator having DC offset compensation

Publications (3)

Publication Number Publication Date
GB0122179D0 GB0122179D0 (en) 2001-10-31
GB2380078A GB2380078A (en) 2003-03-26
GB2380078B true GB2380078B (en) 2005-01-19

Family

ID=9922046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0122179A Expired - Fee Related GB2380078B (en) 2001-09-13 2001-09-13 FM demodulator having DC offset compensation

Country Status (1)

Country Link
GB (1) GB2380078B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335809A (en) * 1998-03-24 1999-09-29 Ericsson Telefon Ab L M Demodulator circuits

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335809A (en) * 1998-03-24 1999-09-29 Ericsson Telefon Ab L M Demodulator circuits

Also Published As

Publication number Publication date
GB2380078A (en) 2003-03-26
GB0122179D0 (en) 2001-10-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120913