BE420034A - - Google Patents
Info
- Publication number
- BE420034A BE420034A BE420034DA BE420034A BE 420034 A BE420034 A BE 420034A BE 420034D A BE420034D A BE 420034DA BE 420034 A BE420034 A BE 420034A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
- H03H9/02023—Characteristics of piezoelectric layers, e.g. cutting angles consisting of quartz
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
- H03H9/0095—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using bulk acoustic wave devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/21—Crystal tuning forks
- H03H9/215—Crystal tuning forks consisting of quartz
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65022A US2185599A (en) | 1936-02-21 | 1936-02-21 | Piezoelectric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE420034A true BE420034A (en:Method) |
Family
ID=22059823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE420034D BE420034A (en:Method) | 1936-02-21 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2185599A (en:Method) |
| BE (1) | BE420034A (en:Method) |
| CH (1) | CH202081A (en:Method) |
| FR (1) | FR820481A (en:Method) |
| GB (1) | GB479979A (en:Method) |
| NL (1) | NL62574C (en:Method) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE759014C (de) * | 1939-08-30 | 1953-03-23 | Siemens & Halske A G | Piezoelektrischer UEbertragerkristall |
| DE767884C (de) * | 1941-04-03 | 1954-05-31 | Telefunken Gmbh | Filter, Phasendrehglied od. dgl. der elektrischen Nachrichtentechnik |
| DE763329C (de) * | 1941-04-29 | 1954-10-18 | Siemens & Halske A G | Biegungsschwingungen ausfuehrender Quarzkristall |
| US2666196A (en) * | 1949-06-07 | 1954-01-12 | Bell Telephone Labor Inc | Frequency station calling system using bifurcated piezoelectric elements |
| US2988728A (en) * | 1953-07-06 | 1961-06-13 | United Geophysical Corp | Piezoelectric hydrophone |
| US2990525A (en) * | 1957-12-12 | 1961-06-27 | Bell Telephone Labor Inc | Wave filter |
| US3582836A (en) * | 1969-07-01 | 1971-06-01 | Damon Eng Inc | Monolithic crystal filters |
| JPS5851687B2 (ja) * | 1976-10-22 | 1983-11-17 | セイコーインスツルメンツ株式会社 | 音叉型水晶振動子 |
| JPS55112017A (en) * | 1979-02-20 | 1980-08-29 | Seiko Epson Corp | Electrode of tuning fork type crystal oscillator |
| EP0096653B1 (en) * | 1982-06-04 | 1989-04-12 | Statek Corparation | Extensional mode piezoelectric microresonator |
| JP3858639B2 (ja) * | 2000-08-31 | 2006-12-20 | 株式会社村田製作所 | 圧電共振子および電子機器 |
-
0
- BE BE420034D patent/BE420034A/xx unknown
- NL NL62574D patent/NL62574C/xx active
-
1936
- 1936-02-21 US US65022A patent/US2185599A/en not_active Expired - Lifetime
-
1937
- 1937-02-12 GB GB4301/37A patent/GB479979A/en not_active Expired
- 1937-02-18 CH CH202081D patent/CH202081A/de unknown
- 1937-02-20 FR FR820481D patent/FR820481A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH202081A (de) | 1938-12-31 |
| NL62574C (en:Method) | |
| GB479979A (en) | 1938-02-15 |
| US2185599A (en) | 1940-01-02 |
| FR820481A (fr) | 1937-11-12 |