GB1528302A - Filters - Google Patents

Filters

Info

Publication number
GB1528302A
GB1528302A GB736977A GB736977A GB1528302A GB 1528302 A GB1528302 A GB 1528302A GB 736977 A GB736977 A GB 736977A GB 736977 A GB736977 A GB 736977A GB 1528302 A GB1528302 A GB 1528302A
Authority
GB
United Kingdom
Prior art keywords
path
frequency
selective elements
elements
input
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
Application number
GB736977A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB736977A priority Critical patent/GB1528302A/en
Priority to AU33418/78A priority patent/AU3341878A/en
Publication of GB1528302A publication Critical patent/GB1528302A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/141—Control of transmission; Equalising characterised by the equalising network used using multiequalisers, e.g. bump, cosine, Bode
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

1528302 Electric filters STANDARD TELEPHONES & CABLES Ltd 22 Feb 1977 07369/77 Heading H3T A filter circuit comprises a first path including frequency-selective elements in parallel with a second passive path R 2 not including frequencyselective elements, whereby outside a pass-band defined by the frequency selective elements the attenuation of the circuit is defined by the second path, the output of the frequency-selective elements being connected via a resistance R 1 to the input of an amplifier A, the second path being also connected to the said input. Such circuits may be used in a voice-frequency signal receiver for an automatic telephone exchange.
GB736977A 1977-02-22 1977-02-22 Filters Expired GB1528302A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB736977A GB1528302A (en) 1977-02-22 1977-02-22 Filters
AU33418/78A AU3341878A (en) 1977-02-22 1978-02-20 Filter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB736977A GB1528302A (en) 1977-02-22 1977-02-22 Filters

Publications (1)

Publication Number Publication Date
GB1528302A true GB1528302A (en) 1978-10-11

Family

ID=9831825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB736977A Expired GB1528302A (en) 1977-02-22 1977-02-22 Filters

Country Status (2)

Country Link
AU (1) AU3341878A (en)
GB (1) GB1528302A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5815037A (en) * 1995-05-22 1998-09-29 Sgs-Thomson Microelectronics S.R.L. High-pass filter, particularly for canceling out the offset in a chain of amplifiers
CN111654260A (en) * 2020-07-08 2020-09-11 中国电子科技集团公司第九研究所 Band-stop filtering component with variable stop band depth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5815037A (en) * 1995-05-22 1998-09-29 Sgs-Thomson Microelectronics S.R.L. High-pass filter, particularly for canceling out the offset in a chain of amplifiers
CN111654260A (en) * 2020-07-08 2020-09-11 中国电子科技集团公司第九研究所 Band-stop filtering component with variable stop band depth

Also Published As

Publication number Publication date
AU3341878A (en) 1979-08-30

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee