JPS56147511A - Mechanical filter - Google Patents

Mechanical filter

Info

Publication number
JPS56147511A
JPS56147511A JP5143680A JP5143680A JPS56147511A JP S56147511 A JPS56147511 A JP S56147511A JP 5143680 A JP5143680 A JP 5143680A JP 5143680 A JP5143680 A JP 5143680A JP S56147511 A JPS56147511 A JP S56147511A
Authority
JP
Japan
Prior art keywords
pair
mechanical oscillators
couplers
coupler
couples
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
JP5143680A
Other languages
Japanese (ja)
Inventor
Taku Gonji
Yoshihiko Kasai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5143680A priority Critical patent/JPS56147511A/en
Publication of JPS56147511A publication Critical patent/JPS56147511A/en
Pending 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)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To make the manufacture easy and to increase the accuracy, by constituting a pair of mechanical oscillators shifted lengthwise with each other and linking two couplers on the same plane in parallel with each other at right angle of the mechanical oscillators. CONSTITUTION:A pair of mechanical oscillators 24, 25 with almost the same size and shape which oscillate with the fundamental oscillation order of the same oscillation type, are disposed so that the long axial direction is almost in parallel. The 1st and 2nd couplers 26, 27 are located almost at a right angle with the mechanical oscillators of a pair. In this case, the 1st coupler 26 couples a pair of mechanical oscillators 24, 25 in phase and the 2nd coupler 27 couples a pair of mechanical oscillators 24, 25 in opposite phase.
JP5143680A 1980-04-18 1980-04-18 Mechanical filter Pending JPS56147511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5143680A JPS56147511A (en) 1980-04-18 1980-04-18 Mechanical filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5143680A JPS56147511A (en) 1980-04-18 1980-04-18 Mechanical filter

Publications (1)

Publication Number Publication Date
JPS56147511A true JPS56147511A (en) 1981-11-16

Family

ID=12886872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5143680A Pending JPS56147511A (en) 1980-04-18 1980-04-18 Mechanical filter

Country Status (1)

Country Link
JP (1) JPS56147511A (en)

Similar Documents

Publication Publication Date Title
JPS57185717A (en) Tuning fork type quartz oscillator
JPS56147511A (en) Mechanical filter
GB2021311B (en) Rectangular at-quartz resonator
GB1074292A (en) Improvements in or relating to electromechanical filters
JPS5360544A (en) Dielectric resonator
JPS5421361A (en) Photo switch
JPS5575330A (en) Mechanical filter
JPS5566119A (en) Mechanical filter
JPS54109355A (en) Mechanical filter
SU597065A1 (en) Electromechanical filter oscillatory system
JPS5635526A (en) Mechanical filter
SU476037A1 (en) Ultrasonic oscillatory system
JPS57206116A (en) Piezoelectric oscillator unit
JPS5360543A (en) Dielectric resonator
USD236129S (en) Available copv
JPS5456868A (en) Electronic watch
FR2376558A1 (en) Electromechanical band-pass filter with cylindrical resonators - has half wavelength resonators with quarter wavelength coupling elements and coupling bridge
JPS5754415A (en) Oscillator
JPS54162574A (en) Electronic wristwatch
JPS52119195A (en) Crystal resonator in tuning fork type
JPS5291672A (en) Longer side piezoelectric vibrator
JPS53149787A (en) Tuning-fork-shaped crystal vibrator
JPS5375793A (en) Cr6stal oscillator
JPS5514779A (en) Ultrasonic solid state delay element
GB813938A (en) Improvements relating to high frequency electronic oscillators