GB2280809B - Ladder-type electric filter device - Google Patents
Ladder-type electric filter deviceInfo
- Publication number
- GB2280809B GB2280809B GB9420299A GB9420299A GB2280809B GB 2280809 B GB2280809 B GB 2280809B GB 9420299 A GB9420299 A GB 9420299A GB 9420299 A GB9420299 A GB 9420299A GB 2280809 B GB2280809 B GB 2280809B
- Authority
- GB
- United Kingdom
- Prior art keywords
- ladder
- filter device
- type electric
- electric filter
- type
- 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 - Fee Related
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
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
- H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
- H03H9/1028—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being held between spring terminals
-
- 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
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
- H03H9/605—Electric coupling means therefor consisting of a ladder configuration
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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1991033539U JP2509276Y2 (en) | 1991-04-12 | 1991-04-12 | Ladder type electric filter |
JP1991033540U JP2567662Y2 (en) | 1991-04-12 | 1991-04-12 | Ladder type electric filter |
GB9207999A GB2254972B (en) | 1991-04-12 | 1992-04-10 | Ladder-type electric filter device |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9420299D0 GB9420299D0 (en) | 1994-11-23 |
GB2280809A GB2280809A (en) | 1995-02-08 |
GB2280809B true GB2280809B (en) | 1995-05-03 |
Family
ID=27266137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9420299A Expired - Fee Related GB2280809B (en) | 1991-04-12 | 1992-04-10 | Ladder-type electric filter device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2280809B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084244A (en) * | 1996-07-18 | 1998-03-31 | Murata Mfg Co Ltd | Piezoelectric resonator and electronic component using it |
JPH10126203A (en) * | 1996-08-27 | 1998-05-15 | Murata Mfg Co Ltd | Piezoelectric resonator and electronic component using it |
-
1992
- 1992-04-10 GB GB9420299A patent/GB2280809B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2280809A (en) | 1995-02-08 |
GB9420299D0 (en) | 1994-11-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030410 |