GB1019246A - Improvements in or relating to electro-mechanical filters - Google Patents
Improvements in or relating to electro-mechanical filtersInfo
- Publication number
- GB1019246A GB1019246A GB36664/62A GB3666462A GB1019246A GB 1019246 A GB1019246 A GB 1019246A GB 36664/62 A GB36664/62 A GB 36664/62A GB 3666462 A GB3666462 A GB 3666462A GB 1019246 A GB1019246 A GB 1019246A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillators
- leads
- sept
- ceramic material
- electro
- 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.)
- Expired
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
-
- 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)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
1,019,246. Electromechanical filters. SIEMENS & HALSKE A.G. Sept. 27, 1962 [Sept. 28, 1961], No. 36664/62. Heading H3U. An electromechanical filter system is so constructed that resonances of the various oscillators lying outside the pass band do not coincide. The filter of Fig. 1 comprises two longitudinal-mode steel oscillators 1, 2 coupled by a bridge 3. Transducers 5, 5<SP>1</SP> and 6, 6<SP>1</SP> of piezo-electric ceramic material are attached to the ends of the oscillators. The proportion of steel to ceramic material differs in the two oscillators in such a manner that, whilst the fundamentals are equal, the overtone frequencies differ. If an input is applied to leads 7, 7<SP>1</SP> and an output derived from leads 8, 8<SP>1</SP> with leads 4 in common, only overtones corresponding to odd harmonics occur.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0075989 | 1961-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1019246A true GB1019246A (en) | 1966-02-02 |
Family
ID=7505792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36664/62A Expired GB1019246A (en) | 1961-09-28 | 1962-09-27 | Improvements in or relating to electro-mechanical filters |
Country Status (7)
Country | Link |
---|---|
US (1) | US3281725A (en) |
BE (1) | BE622952A (en) |
CH (1) | CH406469A (en) |
DE (1) | DE1616685B1 (en) |
GB (1) | GB1019246A (en) |
NL (1) | NL283445A (en) |
SE (1) | SE316849B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3714475A (en) * | 1966-07-15 | 1973-01-30 | H Eng Corp | Resonator having counter rotating rigid parts |
CH481412A (en) * | 1966-09-26 | 1969-07-31 | Straumann Inst Ag | Oscillators for timing devices |
US3437849A (en) * | 1966-11-21 | 1969-04-08 | Motorola Inc | Temperature compensation of electrical devices |
CH494991A (en) * | 1968-05-29 | 1970-04-15 | Bulova Watch Co Inc | Elastic transducer for timing devices |
DE2520985C3 (en) * | 1975-05-12 | 1981-07-30 | Kievskij politechničeskeskij institut 50-letija Velikoj Oktjabrskoj Sozialističeskoj Revoljuzii, Kiev | Piezoelectric voltage and current transformer |
US4006437A (en) * | 1975-06-27 | 1977-02-01 | Bell Telephone Laboratories, Incorporated | Frequency filter |
US4233579A (en) * | 1979-06-06 | 1980-11-11 | Bell Telephone Laboratories, Incorporated | Technique for suppressing spurious resonances in strip transmission line circuits |
US4368402A (en) * | 1980-07-02 | 1983-01-11 | Fuji Electrochemical Co., Ltd. | H-Type ceramic resonator |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE912709C (en) * | 1939-12-06 | 1954-06-03 | Zeiss Carl Fa | Piezoelectric resonator device |
US2443471A (en) * | 1945-03-29 | 1948-06-15 | Bell Telephone Labor Inc | Piezoelectric damping means for mechanical vibrations |
CH267210A (en) * | 1948-06-03 | 1950-03-15 | Hasler Ag | Method for magnetomechanical energy conversion. |
BE483369A (en) * | 1948-07-03 | |||
US2617882A (en) * | 1950-05-29 | 1952-11-11 | Rca Corp | Maximal flatness filter |
US2695357A (en) * | 1951-04-19 | 1954-11-23 | Rca Corp | Frequency conversion apparatus |
US2814785A (en) * | 1955-07-29 | 1957-11-26 | Rca Corp | Electromechanical filter |
US3015789A (en) * | 1956-04-23 | 1962-01-02 | Toyotsushinki Kabushiki Kaisha | Mechanical filter |
US2877432A (en) * | 1957-01-08 | 1959-03-10 | Clevite Corp | Electromechanical filter elements |
GB846999A (en) * | 1958-03-03 | 1960-09-07 | Marconi Wireless Telegraph Co | Improvements in or relating to electro-mechanical high frequency filters |
NL239635A (en) * | 1958-05-30 | |||
US2948367A (en) * | 1958-12-04 | 1960-08-09 | Salvatore R Uglietto | Interlocking siding |
US3064213A (en) * | 1959-08-14 | 1962-11-13 | Bell Telephone Labor Inc | Electromechanical wave transmission systems |
-
0
- NL NL283445D patent/NL283445A/xx unknown
- BE BE622952D patent/BE622952A/xx unknown
-
1961
- 1961-09-28 DE DE19611616685 patent/DE1616685B1/en active Pending
-
1962
- 1962-08-27 US US219563A patent/US3281725A/en not_active Expired - Lifetime
- 1962-08-30 CH CH1032562A patent/CH406469A/en unknown
- 1962-09-27 SE SE10417/62A patent/SE316849B/xx unknown
- 1962-09-27 GB GB36664/62A patent/GB1019246A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1616685B1 (en) | 1970-02-05 |
BE622952A (en) | |
NL283445A (en) | |
CH406469A (en) | 1966-01-31 |
SE316849B (en) | 1969-11-03 |
US3281725A (en) | 1966-10-25 |
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