JPS57193111A - Filter circuit - Google Patents

Filter circuit

Info

Publication number
JPS57193111A
JPS57193111A JP7780381A JP7780381A JPS57193111A JP S57193111 A JPS57193111 A JP S57193111A JP 7780381 A JP7780381 A JP 7780381A JP 7780381 A JP7780381 A JP 7780381A JP S57193111 A JPS57193111 A JP S57193111A
Authority
JP
Japan
Prior art keywords
filter circuit
detour
main body
output
admittance
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.)
Pending
Application number
JP7780381A
Other languages
Japanese (ja)
Inventor
Tetsuo Ikeda
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 JP7780381A priority Critical patent/JPS57193111A/en
Publication of JPS57193111A publication Critical patent/JPS57193111A/en
Pending 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
    • H03H7/0115—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
    • H03H7/1775—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
    • H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
    • H03H7/425—Balance-balance networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To obtain a filter circuit with a steep rising characteristic and small size, by making it to have a simple constitution in which a detour is connected in parallel with a filter circuit main body. CONSTITUTION:A detour 9 and a filter circuit main body 10 are connected in parallel between input terminals 5, 6 and output terminals 7, 8. The admittance Y of the entire circuit is Y=Ya+Yb, where the Ya is a transfer admittance of the detour 9 and the Yb is a transfer admittance of the main body 10. The Y=0 can be satisfied at a frequency of zero. That is, since an output is obtained by the synthesis of signals from the circuits 9 and 10, no output appears when the two signals are opposite in the polarity with each other at the frequency when the mutual level is equal because of cancellation. Thus, a filter circuit 3 having a steep leading characteristic can be obtained with small size.
JP7780381A 1981-05-22 1981-05-22 Filter circuit Pending JPS57193111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7780381A JPS57193111A (en) 1981-05-22 1981-05-22 Filter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7780381A JPS57193111A (en) 1981-05-22 1981-05-22 Filter circuit

Publications (1)

Publication Number Publication Date
JPS57193111A true JPS57193111A (en) 1982-11-27

Family

ID=13644160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7780381A Pending JPS57193111A (en) 1981-05-22 1981-05-22 Filter circuit

Country Status (1)

Country Link
JP (1) JPS57193111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9328938B2 (en) 2012-02-03 2016-05-03 Daikin Industries, Ltd. Indoor unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9328938B2 (en) 2012-02-03 2016-05-03 Daikin Industries, Ltd. Indoor unit

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