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GB2538226B - Active noise filter - Google Patents

Active noise filter

Info

Publication number
GB2538226B
GB2538226B GB1506708.5A GB201506708A GB2538226B GB 2538226 B GB2538226 B GB 2538226B GB 201506708 A GB201506708 A GB 201506708A GB 2538226 B GB2538226 B GB 2538226B
Authority
GB
United Kingdom
Prior art keywords
noise filter
active noise
active
filter
noise
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
GB1506708.5A
Other versions
GB2538226A (en
GB201506708D0 (en
Inventor
Robert Connor Frank
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1506708.5A priority Critical patent/GB2538226B/en
Publication of GB201506708D0 publication Critical patent/GB201506708D0/en
Publication of GB2538226A publication Critical patent/GB2538226A/en
Application granted granted Critical
Publication of GB2538226B publication Critical patent/GB2538226B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB1506708.5A 2015-04-20 2015-04-20 Active noise filter Expired - Fee Related GB2538226B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1506708.5A GB2538226B (en) 2015-04-20 2015-04-20 Active noise filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1506708.5A GB2538226B (en) 2015-04-20 2015-04-20 Active noise filter

Publications (3)

Publication Number Publication Date
GB201506708D0 GB201506708D0 (en) 2015-06-03
GB2538226A GB2538226A (en) 2016-11-16
GB2538226B true GB2538226B (en) 2021-08-04

Family

ID=53298881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1506708.5A Expired - Fee Related GB2538226B (en) 2015-04-20 2015-04-20 Active noise filter

Country Status (1)

Country Link
GB (1) GB2538226B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12132446B1 (en) 2023-06-05 2024-10-29 Rockwell Collins, Inc. System and method for phase locked loop (PLL) based removal of modulated interference

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63300633A (en) * 1987-05-29 1988-12-07 Nec Corp Interference signal eliminating circuit
GB2248366A (en) * 1990-08-08 1992-04-01 Dr Frank Robert Connor Active noise filter
DE4220296A1 (en) * 1992-06-20 1993-12-23 Blaupunkt Werke Gmbh Narrow-band interference suppression circuit esp. for car radio - employs PLL and shifter to generate compensation signal at frequency of interference component but with opposite phase
US5826181A (en) * 1996-05-18 1998-10-20 Northern Telecom Limited Radio frequency noise reduction arrangement
JPH1188206A (en) * 1997-09-10 1999-03-30 Nec Corp Noise removing circuit and its method
US5930306A (en) * 1996-02-16 1999-07-27 Thomson Multimedia Sa Device for correcting phase noise in a digital receiver
US20040198295A1 (en) * 2002-06-27 2004-10-07 Nicholls Charles T. Adaptive feedforward noise cancellation circuit
US20140141741A1 (en) * 2012-11-21 2014-05-22 Broadcom Corporation Method and system for reciprocal mixing cancellation of wideband modulated blockers
US20140141740A1 (en) * 2012-11-19 2014-05-22 Broadcom Corporation Using direct phase noise measurement and blocker recovery to cancel reciprocal mixing noise

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63300633A (en) * 1987-05-29 1988-12-07 Nec Corp Interference signal eliminating circuit
GB2248366A (en) * 1990-08-08 1992-04-01 Dr Frank Robert Connor Active noise filter
DE4220296A1 (en) * 1992-06-20 1993-12-23 Blaupunkt Werke Gmbh Narrow-band interference suppression circuit esp. for car radio - employs PLL and shifter to generate compensation signal at frequency of interference component but with opposite phase
US5930306A (en) * 1996-02-16 1999-07-27 Thomson Multimedia Sa Device for correcting phase noise in a digital receiver
US5826181A (en) * 1996-05-18 1998-10-20 Northern Telecom Limited Radio frequency noise reduction arrangement
JPH1188206A (en) * 1997-09-10 1999-03-30 Nec Corp Noise removing circuit and its method
US20040198295A1 (en) * 2002-06-27 2004-10-07 Nicholls Charles T. Adaptive feedforward noise cancellation circuit
US20140141740A1 (en) * 2012-11-19 2014-05-22 Broadcom Corporation Using direct phase noise measurement and blocker recovery to cancel reciprocal mixing noise
US20140141741A1 (en) * 2012-11-21 2014-05-22 Broadcom Corporation Method and system for reciprocal mixing cancellation of wideband modulated blockers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12132446B1 (en) 2023-06-05 2024-10-29 Rockwell Collins, Inc. System and method for phase locked loop (PLL) based removal of modulated interference

Also Published As

Publication number Publication date
GB2538226A (en) 2016-11-16
GB201506708D0 (en) 2015-06-03

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Legal Events

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

Effective date: 20220420