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GB677862A - Improvements in or relating to electrical bandpass filter networks - Google Patents

Improvements in or relating to electrical bandpass filter networks

Info

Publication number
GB677862A
GB677862A GB1911950A GB1911950A GB677862A GB 677862 A GB677862 A GB 677862A GB 1911950 A GB1911950 A GB 1911950A GB 1911950 A GB1911950 A GB 1911950A GB 677862 A GB677862 A GB 677862A
Authority
GB
United Kingdom
Prior art keywords
networks
network
transformation
relating
bandpass filter
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
GB1911950A
Inventor
Josef Maria Linke
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB1911950A priority Critical patent/GB677862A/en
Publication of GB677862A publication Critical patent/GB677862A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/175—Series LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766—Parallel LC in series path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Networks Using Active Elements (AREA)

Abstract

677,862. Impedance networks. POSTMASTER GENERAL. July 31, 1950, No. 19119/50. Class 40 (viii). A filter having attenuation poles above and below the pass-band comprises T and # networks connected together in sets by means of constant - k half-sections, the resultant network being transformed to reduce the number of preselected components, for example by Nortons transformation. As shown in Fig. 3, the filter is formed from a set of three T networks joined to a set of three # networks by a constant k half-section. Using Norton's transformation the inductors L12, L13, L14, L15, L16 and L17 are selected and extracted, giving the network of Fig. 4. As the components of this network are found to be of very different orders, capacities C22 and C23 are selected for transformation, giving the network of Fig. 5, which is provided with a final shunt inductor L29 having a tap to give the required matching condition.
GB1911950A 1950-07-31 1950-07-31 Improvements in or relating to electrical bandpass filter networks Expired GB677862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1911950A GB677862A (en) 1950-07-31 1950-07-31 Improvements in or relating to electrical bandpass filter networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1911950A GB677862A (en) 1950-07-31 1950-07-31 Improvements in or relating to electrical bandpass filter networks

Publications (1)

Publication Number Publication Date
GB677862A true GB677862A (en) 1952-08-20

Family

ID=10124068

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1911950A Expired GB677862A (en) 1950-07-31 1950-07-31 Improvements in or relating to electrical bandpass filter networks

Country Status (1)

Country Link
GB (1) GB677862A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794938A (en) * 1971-05-03 1974-02-26 Gen Aviat Electronics Inc Coupled bandstop/bandpass filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794938A (en) * 1971-05-03 1974-02-26 Gen Aviat Electronics Inc Coupled bandstop/bandpass filter

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