RO80736B - Filtru electromecanic - Google Patents

Filtru electromecanic

Info

Publication number
RO80736B
RO80736B RO79654A RO7965474A RO80736B RO 80736 B RO80736 B RO 80736B RO 79654 A RO79654 A RO 79654A RO 7965474 A RO7965474 A RO 7965474A RO 80736 B RO80736 B RO 80736B
Authority
RO
Romania
Prior art keywords
resonators
coupling conductor
central coupling
coupled
conductors
Prior art date
Application number
RO79654A
Other languages
English (en)
Other versions
RO80736A (ro
Inventor
Franco Crescenzi
Livio Cucchi
Francesco Molo
Original Assignee
Telettra-Laboratori Di Telefonia Elettronica E Radio S.P.A.
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 Telettra-Laboratori Di Telefonia Elettronica E Radio S.P.A. filed Critical Telettra-Laboratori Di Telefonia Elettronica E Radio S.P.A.
Publication of RO80736B publication Critical patent/RO80736B/ro
Publication of RO80736A publication Critical patent/RO80736A/ro

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/48Coupling means therefor
    • H03H9/50Mechanical coupling means

Landscapes

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

Abstract

Inventia se refera la un filtru electromecanic constituit din mai multi rezonatori care vibreaza prin îndoire, dispusi, într-o structura de filtrare. Filtrul, conform inventiei, este alcatuit din niste rezonatori intermediari si de capat care sunt plasati de o parte si de cealalta a unui conductor de cuplare, central, astfel încît rezinatorii intermediari si de capat sunt plasati în niste planuri diferite, paralele, rezonatorii intermediari din acelasi plan fiind cuplati prin niste conductoare paralele, iar ceilalti rezonatori intermediari si de capat situati în celalalt plan fiind cuplati prin niste alte conductoare paralele, iar în ambele cazuri contactele avînd loc în regiunile axelor nodale ale modului de vibratie fundamental al rezonatorilor intermediari si de capat si în partea opusa contactelor acestora din urma cu conductorul de cuplare, central, doi dintre rezonatorii intermediari alaturati, situati de aceeasi parte a conductorului de cuplare, central, fiind cuplati suplimentari cu ajutorul unuia dintre niste conductori...
RO7479654A 1973-08-03 1974-08-02 Filtru electromecanic RO80736A (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2748273A IT992811B (it) 1973-08-03 1973-08-03 Filtro elettromeccanico con risona tori vibranti a flessione

Publications (2)

Publication Number Publication Date
RO80736B true RO80736B (ro) 1983-05-30
RO80736A RO80736A (ro) 1983-06-01

Family

ID=11221735

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7479654A RO80736A (ro) 1973-08-03 1974-08-02 Filtru electromecanic

Country Status (8)

Country Link
BR (1) BR7406380D0 (ro)
DE (1) DE2433874C3 (ro)
ES (1) ES428885A1 (ro)
FR (1) FR2239811B1 (ro)
GB (1) GB1482112A (ro)
IT (1) IT992811B (ro)
RO (1) RO80736A (ro)
YU (1) YU36321B (ro)

Also Published As

Publication number Publication date
BR7406380D0 (pt) 1975-05-20
DE2433874B2 (de) 1977-11-03
DE2433874C3 (de) 1978-06-15
YU210174A (en) 1981-08-31
RO80736A (ro) 1983-06-01
DE2433874A1 (de) 1975-02-13
YU36321B (en) 1982-06-18
IT992811B (it) 1975-09-30
FR2239811B1 (ro) 1978-01-20
ES428885A1 (es) 1976-09-01
FR2239811A1 (ro) 1975-02-28
GB1482112A (en) 1977-08-03

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