GB2248366B - Active noise filter - Google Patents

Active noise filter

Info

Publication number
GB2248366B
GB2248366B GB9017428A GB9017428A GB2248366B GB 2248366 B GB2248366 B GB 2248366B GB 9017428 A GB9017428 A GB 9017428A GB 9017428 A GB9017428 A GB 9017428A GB 2248366 B GB2248366 B GB 2248366B
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
GB9017428A
Other versions
GB2248366A (en
GB9017428D0 (en
Inventor
Frank Robert Connor
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 GB9017428A priority Critical patent/GB2248366B/en
Publication of GB9017428D0 publication Critical patent/GB9017428D0/en
Publication of GB2248366A publication Critical patent/GB2248366A/en
Application granted granted Critical
Publication of GB2248366B publication Critical patent/GB2248366B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • 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
    • H03D3/002—Modifications of demodulators to reduce interference by undesired signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB9017428A 1990-08-08 1990-08-08 Active noise filter Expired - Fee Related GB2248366B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9017428A GB2248366B (en) 1990-08-08 1990-08-08 Active noise filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9017428A GB2248366B (en) 1990-08-08 1990-08-08 Active noise filter

Publications (3)

Publication Number Publication Date
GB9017428D0 GB9017428D0 (en) 1990-09-19
GB2248366A GB2248366A (en) 1992-04-01
GB2248366B true GB2248366B (en) 1994-08-03

Family

ID=10680375

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9017428A Expired - Fee Related GB2248366B (en) 1990-08-08 1990-08-08 Active noise filter

Country Status (1)

Country Link
GB (1) GB2248366B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2538226B (en) * 2015-04-20 2021-08-04 Robert Connor Frank Active noise filter

Also Published As

Publication number Publication date
GB2248366A (en) 1992-04-01
GB9017428D0 (en) 1990-09-19

Similar Documents

Publication Publication Date Title
EP0442492A3 (en) Active filter
GB2247849B (en) Filter elements
ZA914096B (en) Self-cleaning filter
EP0488822A3 (en) Electret filters
IL98243A0 (en) Filter assembly
GB9124890D0 (en) Noise absorber
GB2247469B (en) Filter cleaning
ZA915539B (en) Filtering arrangement
EP0456499A3 (en) Noise cancellation
EP0462562A3 (en) Line filter assembly
GB9021348D0 (en) Filtering arrangement
EP0493026A3 (en) Cigarette filter
DE69103022D1 (en) Filter.
GB9027517D0 (en) Suction filter
GB2248559A8 (en) Cleaning filters
GB2243793B (en) Filter assemblies
AU112925S (en) Filter
GB2248366B (en) Active noise filter
GB9015468D0 (en) Filter
GB9000311D0 (en) Filter elements
GB2255461B (en) Active filter circuit
GB9026501D0 (en) Filter arrangements
GB9007302D0 (en) Noise reduction
GB9011144D0 (en) Filter
PL285862A1 (en) Filter

Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19950809

746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19950809

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000808