CH493166A - Kristallfilter - Google Patents
KristallfilterInfo
- Publication number
- CH493166A CH493166A CH615569A CH615569A CH493166A CH 493166 A CH493166 A CH 493166A CH 615569 A CH615569 A CH 615569A CH 615569 A CH615569 A CH 615569A CH 493166 A CH493166 A CH 493166A
- Authority
- CH
- Switzerland
- Prior art keywords
- crystal filter
- crystal
- filter
- Prior art date
Links
- 239000013078 crystal Substances 0.000 title 1
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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72367768A | 1968-04-24 | 1968-04-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH493166A true CH493166A (de) | 1970-06-30 |
Family
ID=24907224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH615569A CH493166A (de) | 1968-04-24 | 1969-04-23 | Kristallfilter |
Country Status (8)
Country | Link |
---|---|
US (1) | US3599124A (de) |
BE (1) | BE731938A (de) |
CH (1) | CH493166A (de) |
ES (1) | ES366488A1 (de) |
FR (1) | FR2006841A1 (de) |
GB (1) | GB1266565A (de) |
NL (1) | NL6906268A (de) |
SE (1) | SE362759B (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4329666A (en) * | 1980-08-11 | 1982-05-11 | Motorola, Inc. | Two-pole monolithic crystal filter |
US4825467A (en) * | 1986-11-25 | 1989-04-25 | International Telesystems, Inc. | Restricted access television transmission system |
US4980598A (en) * | 1989-12-21 | 1990-12-25 | Lucas Schaevitz Inc. | Monolithic resonator for a vibrating beam accelerometer |
JP2741087B2 (ja) * | 1990-01-12 | 1998-04-15 | 日本特殊陶業株式会社 | ストリップラインフィルタの周波数調整法 |
US6205315B1 (en) * | 1999-11-24 | 2001-03-20 | Xerox Corporation | Tuned transducer, and methods and systems for tuning a transducer |
WO2003055063A1 (en) * | 2001-12-06 | 2003-07-03 | University Of Pittsburgh | Tunable piezoelectric micro-mechanical resonator |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3344368A (en) * | 1967-09-26 | Fettweis bandpass filter | ||
US3396327A (en) * | 1961-12-27 | 1968-08-06 | Toyotsushinki Kabushiki Kaisha | Thickness shear vibration type, crystal electromechanical filter |
US3222622A (en) * | 1962-08-14 | 1965-12-07 | Clevite Corp | Wave filter comprising piezoelectric wafer electroded to define a plurality of resonant regions independently operable without significant electro-mechanical interaction |
US3437848A (en) * | 1964-09-24 | 1969-04-08 | Telefunken Patent | Piezoelectric plate filter |
US3401283A (en) * | 1965-04-19 | 1968-09-10 | Clevite Corp | Piezoelectric resonator |
US3363119A (en) * | 1965-04-19 | 1968-01-09 | Clevite Corp | Piezoelectric resonator and method of making same |
US3334307A (en) * | 1966-11-14 | 1967-08-01 | Zenith Radio Corp | Multi-electrode acoustic amplifier with unitary transducing and translating medium |
US3384768A (en) * | 1967-09-29 | 1968-05-21 | Clevite Corp | Piezoelectric resonator |
-
1968
- 1968-04-24 US US723677A patent/US3599124A/en not_active Expired - Lifetime
-
1969
- 1969-04-16 SE SE05358/69A patent/SE362759B/xx unknown
- 1969-04-18 ES ES366488A patent/ES366488A1/es not_active Expired
- 1969-04-23 GB GB1266565D patent/GB1266565A/en not_active Expired
- 1969-04-23 BE BE731938D patent/BE731938A/xx not_active IP Right Cessation
- 1969-04-23 FR FR6912882A patent/FR2006841A1/fr not_active Withdrawn
- 1969-04-23 NL NL6906268A patent/NL6906268A/xx unknown
- 1969-04-23 CH CH615569A patent/CH493166A/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE1919024B2 (de) | 1973-02-01 |
SE362759B (de) | 1973-12-17 |
ES366488A1 (es) | 1971-03-16 |
GB1266565A (de) | 1972-03-15 |
NL6906268A (de) | 1969-10-28 |
US3599124A (en) | 1971-08-10 |
BE731938A (de) | 1969-10-01 |
DE1919024A1 (de) | 1969-12-04 |
FR2006841A1 (de) | 1970-01-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |