JPS5717218A - Mechanical filter - Google Patents

Mechanical filter

Info

Publication number
JPS5717218A
JPS5717218A JP9165580A JP9165580A JPS5717218A JP S5717218 A JPS5717218 A JP S5717218A JP 9165580 A JP9165580 A JP 9165580A JP 9165580 A JP9165580 A JP 9165580A JP S5717218 A JPS5717218 A JP S5717218A
Authority
JP
Japan
Prior art keywords
active
mechanical
mechanical filter
gyrators
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.)
Granted
Application number
JP9165580A
Other languages
Japanese (ja)
Other versions
JPS632168B2 (en
Inventor
Hiroshi Kawabata
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9165580A priority Critical patent/JPS5717218A/en
Publication of JPS5717218A publication Critical patent/JPS5717218A/en
Publication of JPS632168B2 publication Critical patent/JPS632168B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor
    • H03H9/50—Mechanical coupling means

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Networks Using Active Elements (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To give a flat wave shape characteristics or that in Chebyshev's approximation for a group delay characteristics without using a coil, by connecting an active gyrator at least one of input and output terminals of a mechanical oscillator. CONSTITUTION:Active gyrators 10, 11 are respectuvely added to input and output terminals of a mechanical filter to which mechanical oscillators 1, 2, 3, are coupled with couplers 4, 5, for conjugate matching. The active gyrators 10, 11 consist of resistors and capacitors and they are very small in size because they can be realized with integrated circuits, allowing small sized mechanical filter as a whole.
JP9165580A 1980-07-07 1980-07-07 Mechanical filter Granted JPS5717218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9165580A JPS5717218A (en) 1980-07-07 1980-07-07 Mechanical filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9165580A JPS5717218A (en) 1980-07-07 1980-07-07 Mechanical filter

Publications (2)

Publication Number Publication Date
JPS5717218A true JPS5717218A (en) 1982-01-28
JPS632168B2 JPS632168B2 (en) 1988-01-18

Family

ID=14032513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9165580A Granted JPS5717218A (en) 1980-07-07 1980-07-07 Mechanical filter

Country Status (1)

Country Link
JP (1) JPS5717218A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659149A (en) * 1985-11-08 1987-04-21 American Standard Inc. Cross blending electro-dynamic/friction brake system for multi-car train consist having mixed power and non-power cars

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659149A (en) * 1985-11-08 1987-04-21 American Standard Inc. Cross blending electro-dynamic/friction brake system for multi-car train consist having mixed power and non-power cars

Also Published As

Publication number Publication date
JPS632168B2 (en) 1988-01-18

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