GB608074A - Tunable band-pass filter - Google Patents

Tunable band-pass filter

Info

Publication number
GB608074A
GB608074A GB470446A GB470446A GB608074A GB 608074 A GB608074 A GB 608074A GB 470446 A GB470446 A GB 470446A GB 470446 A GB470446 A GB 470446A GB 608074 A GB608074 A GB 608074A
Authority
GB
United Kingdom
Prior art keywords
variable
band
tuned
pass filter
variation
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
GB470446A
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 GB470446A priority Critical patent/GB608074A/en
Publication of GB608074A publication Critical patent/GB608074A/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
    • H03H7/0153—Electrical filters; Controlling thereof
    • H03H7/0161—Bandpass filters
    • 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
    • H03H7/1775—Parallel 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
    • H03H7/1791—Combined LC in shunt or branch path

Landscapes

  • Filters And Equalizers (AREA)

Abstract

608,074. Impedance networks. TRIGGS, W. W. (Farnsworth Television & Radio Corporation). Feb. 14, 1946, No.4704. Drawings to Specification. [Class 40 (viii)] In a band-pass filter suitable for a radioreceiver, the band-width remains constant as the filter is tuned. The filter comprises two tuned circuits inductively coupled together, one of them being tuned by means of variable capacity shunting a fixed capacity, the other by means of a variable inductance shunting. the fixed coupling inductance. The variable elements are gauged so that the effect on bandwidth of variation in the coefficient of coupling neutralizes that of variation in mid-band frequency. The tuning elements may be varied by means of uni-controlled selector switches, Fig. 1 (not shown), or may be continuously variable, Fig. 2 (not shown).
GB470446A 1946-02-14 1946-02-14 Tunable band-pass filter Expired GB608074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB470446A GB608074A (en) 1946-02-14 1946-02-14 Tunable band-pass filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB470446A GB608074A (en) 1946-02-14 1946-02-14 Tunable band-pass filter

Publications (1)

Publication Number Publication Date
GB608074A true GB608074A (en) 1948-09-09

Family

ID=9782226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB470446A Expired GB608074A (en) 1946-02-14 1946-02-14 Tunable band-pass filter

Country Status (1)

Country Link
GB (1) GB608074A (en)

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