GB2346777B - DC offset correction in a direct conversion receiver - Google Patents

DC offset correction in a direct conversion receiver

Info

Publication number
GB2346777B
GB2346777B GB9903259A GB9903259A GB2346777B GB 2346777 B GB2346777 B GB 2346777B GB 9903259 A GB9903259 A GB 9903259A GB 9903259 A GB9903259 A GB 9903259A GB 2346777 B GB2346777 B GB 2346777B
Authority
GB
United Kingdom
Prior art keywords
offset correction
direct conversion
conversion receiver
receiver
direct
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
GB9903259A
Other versions
GB2346777A (en
GB9903259D0 (en
Inventor
Adrian Philip Nash
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.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones Ltd
Nokia Oyj
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 Nokia Mobile Phones Ltd, Nokia Oyj filed Critical Nokia Mobile Phones Ltd
Priority to GB9903259A priority Critical patent/GB2346777B/en
Publication of GB9903259D0 publication Critical patent/GB9903259D0/en
Publication of GB2346777A publication Critical patent/GB2346777A/en
Application granted granted Critical
Publication of GB2346777B publication Critical patent/GB2346777B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Superheterodyne Receivers (AREA)
GB9903259A 1999-02-12 1999-02-12 DC offset correction in a direct conversion receiver Expired - Fee Related GB2346777B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9903259A GB2346777B (en) 1999-02-12 1999-02-12 DC offset correction in a direct conversion receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9903259A GB2346777B (en) 1999-02-12 1999-02-12 DC offset correction in a direct conversion receiver

Publications (3)

Publication Number Publication Date
GB9903259D0 GB9903259D0 (en) 1999-04-07
GB2346777A GB2346777A (en) 2000-08-16
GB2346777B true GB2346777B (en) 2004-04-07

Family

ID=10847687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9903259A Expired - Fee Related GB2346777B (en) 1999-02-12 1999-02-12 DC offset correction in a direct conversion receiver

Country Status (1)

Country Link
GB (1) GB2346777B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7031687B2 (en) 2001-04-18 2006-04-18 Nokia Corporation Balanced circuit arrangement and method for linearizing such an arrangement
AU2003245597A1 (en) * 2002-06-20 2004-01-06 Qualcomm, Incorporated Dc offset removal
WO2004002093A1 (en) 2002-06-20 2003-12-31 Qualcomm, Incorporated Dc offset removal
US8559559B2 (en) 2002-06-20 2013-10-15 Qualcomm, Incorporated Method and apparatus for compensating DC offsets in communication systems
GB2437574B (en) 2006-04-28 2008-06-25 Motorola Inc Receiver for use in wireless communications and method of operation of the receiver

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430480A2 (en) * 1989-11-13 1991-06-05 Motorola, Inc. FSK time-delay demodulator with reduced DC-offset
EP0474615A2 (en) * 1990-09-06 1992-03-11 Telefonaktiebolaget L M Ericsson D.C. offset compensation in a radio receiver
GB2256985A (en) * 1990-12-20 1992-12-23 Motorola Inc Apparatus and method of dc offset correction for a receiver
EP0594894A1 (en) * 1992-10-28 1994-05-04 ALCATEL BELL Naamloze Vennootschap DC offset correction for direct-conversion TDMA receiver
GB2274759A (en) * 1993-02-02 1994-08-03 Nokia Mobile Phones Ltd Correction of D.C. offset in received and demodulated radio signals
EP0692894A2 (en) * 1994-07-15 1996-01-17 Nec Corporation Optimum signal decision apparatus for digital signal receiver
EP0693750A2 (en) * 1994-07-18 1996-01-24 Quantum Corporation Method and apparatus for cancelling in real-time DC offset in a received analog signal
EP0719013A2 (en) * 1994-12-20 1996-06-26 AT&T Corp. DC offset correction circuit
WO1998001981A1 (en) * 1996-07-08 1998-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for compensating for a varying d.c. offset in a sampled signal
WO1998006172A1 (en) * 1996-08-02 1998-02-12 Zenith Electronics Corporation Dc offset compensation method and apparatus
WO1998010523A1 (en) * 1996-09-06 1998-03-12 Philips Electronics N.V. A zero-if receiver
WO1998016039A1 (en) * 1996-10-08 1998-04-16 Harris Corporation Method and apparatus for cancellation of dc offset and reconstruction of low frequency components of baseband signal
US5748681A (en) * 1995-10-27 1998-05-05 Lucent Technologies Inc Offset correction for a homodyne radio
GB2327834A (en) * 1997-05-30 1999-02-03 Nec Corp Radio communication device using quadrature modulation-demodulation circuit

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430480A2 (en) * 1989-11-13 1991-06-05 Motorola, Inc. FSK time-delay demodulator with reduced DC-offset
EP0474615A2 (en) * 1990-09-06 1992-03-11 Telefonaktiebolaget L M Ericsson D.C. offset compensation in a radio receiver
GB2256985A (en) * 1990-12-20 1992-12-23 Motorola Inc Apparatus and method of dc offset correction for a receiver
EP0594894A1 (en) * 1992-10-28 1994-05-04 ALCATEL BELL Naamloze Vennootschap DC offset correction for direct-conversion TDMA receiver
GB2274759A (en) * 1993-02-02 1994-08-03 Nokia Mobile Phones Ltd Correction of D.C. offset in received and demodulated radio signals
EP0692894A2 (en) * 1994-07-15 1996-01-17 Nec Corporation Optimum signal decision apparatus for digital signal receiver
EP0693750A2 (en) * 1994-07-18 1996-01-24 Quantum Corporation Method and apparatus for cancelling in real-time DC offset in a received analog signal
EP0719013A2 (en) * 1994-12-20 1996-06-26 AT&T Corp. DC offset correction circuit
US5748681A (en) * 1995-10-27 1998-05-05 Lucent Technologies Inc Offset correction for a homodyne radio
WO1998001981A1 (en) * 1996-07-08 1998-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for compensating for a varying d.c. offset in a sampled signal
WO1998006172A1 (en) * 1996-08-02 1998-02-12 Zenith Electronics Corporation Dc offset compensation method and apparatus
WO1998010523A1 (en) * 1996-09-06 1998-03-12 Philips Electronics N.V. A zero-if receiver
WO1998016039A1 (en) * 1996-10-08 1998-04-16 Harris Corporation Method and apparatus for cancellation of dc offset and reconstruction of low frequency components of baseband signal
GB2327834A (en) * 1997-05-30 1999-02-03 Nec Corp Radio communication device using quadrature modulation-demodulation circuit

Also Published As

Publication number Publication date
GB2346777A (en) 2000-08-16
GB9903259D0 (en) 1999-04-07

Similar Documents

Publication Publication Date Title
EP1177602A4 (en) Method for correcting dc offsets in a receiver
GB9904055D0 (en) A handset
AU138804S (en) A handset
GB2358375B (en) Tessellation set
AU1158300A (en) Dc offset correction in a mobile communication system
AU138955S (en) A handset
AU2003238283A1 (en) Offset compensation in a direct-conversion receiver
AU138816S (en) A handset
AU138813S (en) A handset
AU138814S (en) A handset
AU138815S (en) A handset
AU138810S (en) A handset
AU138942S (en) A handset
AU139686S (en) A handset
AU138981S (en) A handset
AU138954S (en) A handset
AU138948S (en) A handset
GB9915720D0 (en) A receiver
AU140980S (en) A mug
GB2346777B (en) DC offset correction in a direct conversion receiver
GB0020959D0 (en) DC compensation in direct conversion radio receivers
GB9918653D0 (en) A chair
GB2350953B (en) A receiver
AU143884S (en) A jug
GB9902809D0 (en) A scanner arrangement

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110212