SU720699A1 - Electromechanical filter - Google Patents
Electromechanical filter Download PDFInfo
- Publication number
- SU720699A1 SU720699A1 SU752168530A SU2168530A SU720699A1 SU 720699 A1 SU720699 A1 SU 720699A1 SU 752168530 A SU752168530 A SU 752168530A SU 2168530 A SU2168530 A SU 2168530A SU 720699 A1 SU720699 A1 SU 720699A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- resonator
- filter
- vibrations
- transducer
- planes
- Prior art date
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- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
1one
Изобретение относитс к радиотехнике, в частности к электромеханическим фильтрам с пьезоэлектрическими преобразовател ми .The invention relates to radio engineering, in particular to electromechanical filters with piezoelectric transducers.
Известен электромеханический фильтр, который содержит два резонатора, входной и выходной пьезоэлектрические преобразователи и механическую св зку, соедин ющую между собой резонаторы 1 .An electromechanical filter is known which contains two resonators, an input and output piezoelectric transducers, and a mechanical coupling connecting the resonators 1.
Недостатками такого фильтра вл ютс его значительные размеры, определ емые длиной св зки, и трудности в настройке фильтра, св занные со сложной акустической св занной резонансной системой, состо щей из двух резонансных стержней и св зки.The disadvantages of such a filter are its considerable size, determined by the bundle length, and the difficulty in tuning the filter, associated with a complex acoustic coupled resonant system consisting of two resonant rods and a bundle.
Известен также электромеханический фильтр, содержащий стержневой резонатор изгибных колебаний с двум плоскими гран ми и расположенными на них двум пьезоэлектрическими преобразовател ми 2. Преобразователи креп тс на параллельно расположённых гран х стержн , имеющего косой плоский срез.An electromechanical filter is also known, which contains a rod-type bending vibration resonator with two flat edges and two piezoelectric transducers 2 located on them. The transducers are mounted on parallel faces of a x rod having an oblique shear cut.
Недостатком известного фильтра вл етс возникновение побочных резонансов приThe disadvantage of the known filter is the occurrence of side resonances at
возбуждении колебаний в стержневом резонаторе .excitation of oscillations in the core cavity.
Дл повышени степени подавлени побочных резонансов Т1ьезоэлектрические преобразователи расположены на двух взаимно перпендикул рных гран х, а поверхность стержн , соедин юща эти грани, выполнена цилиндрической.To increase the degree of suppression of side resonances, Ti1ezoelectric transducers are located on two mutually perpendicular faces, and the surface of the rod connecting these faces is cylindrical.
На чертеже схематически изображен предлагаемый электромеханический фильтр.The drawing shows schematically the proposed electromechanical filter.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752168530A SU720699A1 (en) | 1975-09-01 | 1975-09-01 | Electromechanical filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752168530A SU720699A1 (en) | 1975-09-01 | 1975-09-01 | Electromechanical filter |
Publications (1)
Publication Number | Publication Date |
---|---|
SU720699A1 true SU720699A1 (en) | 1980-03-05 |
Family
ID=20630532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU752168530A SU720699A1 (en) | 1975-09-01 | 1975-09-01 | Electromechanical filter |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU720699A1 (en) |
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1975
- 1975-09-01 SU SU752168530A patent/SU720699A1/en active
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