IE42756L - Electromechanical filters - Google Patents
Electromechanical filtersInfo
- Publication number
- IE42756L IE42756L IE752432A IE243275A IE42756L IE 42756 L IE42756 L IE 42756L IE 752432 A IE752432 A IE 752432A IE 243275 A IE243275 A IE 243275A IE 42756 L IE42756 L IE 42756L
- Authority
- IE
- Ireland
- Prior art keywords
- resonators
- wire
- supported
- wires
- base
- Prior art date
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)
- Electrophonic Musical Instruments (AREA)
- Centrifugal Separators (AREA)
Abstract
1531759 Electrochemical filters SIEMENS AG 6 Nov 1975 [8 Nov 1974] 45986/75 Heading H3U An electrochemical filter comprises parallel rodshaped resonators R1-R10 which are interconnected by at least one coupling wire LK, the input and output transducers EM being connected to resonators other than the end resonators, those resonators outside the signal path between the transducers providing attenuation poles in the transmission characteristic of the filter. The resonators are supported at nodal points by wires S welded thereto and mounted in grooves in base G, which is either of metal or synthetic resin. As shown, the resonators are bending oscillators and electrostrictive transducers are mounted on flat faces of resonators R2, R9; the other resonators also have flat faces by which they are coupled to wire LK. In a modification resonators R2, R9 each have a portion with a second flat face perpendicular to the first one and for coupling them to wire LK. Each transducer is connected to a respective coil, which together with the self-capacitance of the transducer forms a resonant circuit tuned to the centre of the filter pass band but with a greater band width. The position of the poles introduced by resonators such as Rl, R10 may be displaced by varying the masses of these resonators or the length or thickness of the adjacent part of wire LK. Further poles may be provided by coupling wires UK which bridge over one or more intermediate resonators. The resonators may be torsional oscillators in which case they may be supported by wires HD, Fig. 7, attached to projections A of base Gl; alternatively they may each be supported by a single respective wire connected between a node and the base (Fig. 5, not shown) or all the resonators may be supported by two common wires HD mounted in chips (SH, Fig. 6; not shown) extending from the base. In each case the resonators are coupled by a wire KD.
[GB1531759A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742453122 DE2453122A1 (en) | 1974-11-08 | 1974-11-08 | FILTER FOR ELECTRIC VIBRATIONS |
Publications (2)
Publication Number | Publication Date |
---|---|
IE42756L true IE42756L (en) | 1976-05-08 |
IE42756B1 IE42756B1 (en) | 1980-10-08 |
Family
ID=5930393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE2432/75A IE42756B1 (en) | 1974-11-08 | 1975-11-07 | Improvements in or relating to electromechanical filters |
Country Status (16)
Country | Link |
---|---|
JP (1) | JPS5171046A (en) |
AT (1) | AT348592B (en) |
AU (1) | AU473205B2 (en) |
BE (1) | BE835385A (en) |
CH (1) | CH595014A5 (en) |
DE (1) | DE2453122A1 (en) |
DK (1) | DK502975A (en) |
FI (1) | FI753135A (en) |
FR (1) | FR2290788A1 (en) |
GB (1) | GB1531759A (en) |
IE (1) | IE42756B1 (en) |
IT (1) | IT1048771B (en) |
LU (1) | LU73747A1 (en) |
NL (1) | NL163918C (en) |
NO (1) | NO143687C (en) |
SE (1) | SE411283B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2396456A1 (en) * | 1977-07-01 | 1979-01-26 | Telecommunications Sa | ELECTROMECHANICAL FILTERS IMPROVEMENTS |
US10790801B2 (en) * | 2018-09-07 | 2020-09-29 | Vtt Technical Research Centre Of Finland Ltd | Loaded resonators for adjusting frequency response of acoustic wave resonators |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL243515A (en) * | 1959-09-18 | |||
DE2112041A1 (en) * | 1971-03-12 | 1972-09-28 | Siemens Ag | Circuit arrangement for the frequency conversion of electrical communication signals |
JPS5020126B2 (en) * | 1971-09-13 | 1975-07-12 | ||
US3878487A (en) * | 1973-08-02 | 1975-04-15 | Alexandr Lvovich Irzhavsky | Electromechanical disc filter |
-
1974
- 1974-11-08 DE DE19742453122 patent/DE2453122A1/en not_active Withdrawn
-
1975
- 1975-11-03 AT AT834475A patent/AT348592B/en not_active IP Right Cessation
- 1975-11-05 CH CH1428075A patent/CH595014A5/xx not_active IP Right Cessation
- 1975-11-06 SE SE7512464A patent/SE411283B/en unknown
- 1975-11-06 LU LU73747A patent/LU73747A1/xx unknown
- 1975-11-06 GB GB45986/75A patent/GB1531759A/en not_active Expired
- 1975-11-07 FI FI753135A patent/FI753135A/fi not_active Application Discontinuation
- 1975-11-07 BE BE161709A patent/BE835385A/en unknown
- 1975-11-07 IE IE2432/75A patent/IE42756B1/en unknown
- 1975-11-07 NL NL7513106.A patent/NL163918C/en not_active IP Right Cessation
- 1975-11-07 DK DK502975A patent/DK502975A/en unknown
- 1975-11-07 IT IT29066/75A patent/IT1048771B/en active
- 1975-11-07 FR FR7534133A patent/FR2290788A1/en active Granted
- 1975-11-07 JP JP50133917A patent/JPS5171046A/ja active Pending
- 1975-11-07 NO NO753740A patent/NO143687C/en unknown
- 1975-11-07 AU AU86429/75A patent/AU473205B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AT348592B (en) | 1979-02-26 |
SE411283B (en) | 1979-12-10 |
NO143687B (en) | 1980-12-15 |
BE835385A (en) | 1976-05-07 |
CH595014A5 (en) | 1978-01-31 |
NL163918C (en) | 1980-10-15 |
LU73747A1 (en) | 1976-09-06 |
ATA834475A (en) | 1978-07-15 |
NL7513106A (en) | 1976-05-11 |
FI753135A (en) | 1976-05-09 |
NO753740L (en) | 1976-05-11 |
NL163918B (en) | 1980-05-16 |
JPS5171046A (en) | 1976-06-19 |
FR2290788A1 (en) | 1976-06-04 |
AU8642975A (en) | 1976-06-17 |
GB1531759A (en) | 1978-11-08 |
SE7512464L (en) | 1976-05-10 |
DK502975A (en) | 1976-05-09 |
IE42756B1 (en) | 1980-10-08 |
AU473205B2 (en) | 1976-06-17 |
DE2453122A1 (en) | 1976-05-20 |
FR2290788B1 (en) | 1979-05-04 |
IT1048771B (en) | 1980-12-20 |
NO143687C (en) | 1981-03-25 |
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