JPS5566119A - Mechanical filter - Google Patents

Mechanical filter

Info

Publication number
JPS5566119A
JPS5566119A JP13964878A JP13964878A JPS5566119A JP S5566119 A JPS5566119 A JP S5566119A JP 13964878 A JP13964878 A JP 13964878A JP 13964878 A JP13964878 A JP 13964878A JP S5566119 A JPS5566119 A JP S5566119A
Authority
JP
Japan
Prior art keywords
oscillators
oscillation
mechanical
coupler
vertical
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
JP13964878A
Other languages
Japanese (ja)
Inventor
Taku Gonji
Yoshihiko Kasai
Kenji Shirai
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 JP13964878A priority Critical patent/JPS5566119A/en
Priority to IT27177/79A priority patent/IT1125644B/en
Priority to US06/092,855 priority patent/US4314216A/en
Priority to DE2945787A priority patent/DE2945787C2/en
Priority to FR7927957A priority patent/FR2441958B1/en
Publication of JPS5566119A publication Critical patent/JPS5566119A/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

Landscapes

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

Abstract

PURPOSE:To obtain a high-accuracy mechanical filter featuring an easy manufacture by securing a differential connection for two pieces of couplers including the differential coupler nearly vertical to a pair of mechanical oscillators of different oscillation degrees. CONSTITUTION:A pair of mechanical oscillators 28 and 29 feature the same osicllation system, but one of the two oscillators oscillates in the odd degree and the other in the even degree each. Then the mechanical measurements of both oscillators are controlled to secure virtually identical resonance frequency between the primary oscillation of oscillator 28 and the secondary oscillation of oscillator 29. Coupler 30 features the vertical oscillation and connects oscillators 28 and 29 with the same phase; while coupler 31 features the vertical oscillation and connects the both oscillators in the opposite phase to each other. Both couplers 30 and 31 are distributed nearly in parallel and also connected nearly vertical to oscillators 28 and 29. In such way, the manufacture can be facilitated for the mechanical filter along with a high accuracy secured.
JP13964878A 1978-11-13 1978-11-13 Mechanical filter Pending JPS5566119A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP13964878A JPS5566119A (en) 1978-11-13 1978-11-13 Mechanical filter
IT27177/79A IT1125644B (en) 1978-11-13 1979-11-09 MECHANICAL FILTER
US06/092,855 US4314216A (en) 1978-11-13 1979-11-09 Mechanical filter
DE2945787A DE2945787C2 (en) 1978-11-13 1979-11-13 Mechanical filter with several rod-shaped resonators of the same vibration type
FR7927957A FR2441958B1 (en) 1978-11-13 1979-11-13 MECHANICAL FILTER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13964878A JPS5566119A (en) 1978-11-13 1978-11-13 Mechanical filter

Publications (1)

Publication Number Publication Date
JPS5566119A true JPS5566119A (en) 1980-05-19

Family

ID=15250159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13964878A Pending JPS5566119A (en) 1978-11-13 1978-11-13 Mechanical filter

Country Status (1)

Country Link
JP (1) JPS5566119A (en)

Similar Documents

Publication Publication Date Title
JPS53145595A (en) Elastic surface wave oscillator
CA2095413A1 (en) Half-wave folded cross-coupled filter
JPS55117309A (en) Oscillator
JPS5566119A (en) Mechanical filter
JPS5521679A (en) Crystal oscillator of composite mode h type
JPS57124378A (en) Fixing device
JPS55112008A (en) Low frequency clock formation circuit
JPS56147511A (en) Mechanical filter
JPS5357914A (en) Synchronous oscillator
JPS5575330A (en) Mechanical filter
Nusinovich et al. A theory of synchronizing multimode oscillators with rigid self-excitation
FR2410909A1 (en) Quartz crystal resonator oscillating at two frequencies - used as measure of resonator temp. to correct output signal
JPS5575331A (en) Polarized mechanical filter
JPS55105406A (en) Microwave generator
KOLBY Direct reading inductance meter[Patent]
JPS5754415A (en) Oscillator
JPS55136713A (en) Crystal oscillator of tuning fork type
JPS55162604A (en) Solidstate oscillator for microwave
JPS53146585A (en) Crystal oscillator
GB813938A (en) Improvements relating to high frequency electronic oscillators
JPS5375793A (en) Cr6stal oscillator
JPS5384594A (en) Frequency adjusting method for diapason type crystal oscillator
FR2427618A1 (en) Gradiometer determining gravity variations - has laser beam and modulator generating frequency difference between beam circular polarisation (NL 4.12.79)
JPS5212548A (en) Indicating device of action fluctuation of an oscillator
JPS5635526A (en) Mechanical filter