JPS5650613A - Elastic surface wave device - Google Patents
Elastic surface wave deviceInfo
- Publication number
- JPS5650613A JPS5650613A JP12530179A JP12530179A JPS5650613A JP S5650613 A JPS5650613 A JP S5650613A JP 12530179 A JP12530179 A JP 12530179A JP 12530179 A JP12530179 A JP 12530179A JP S5650613 A JPS5650613 A JP S5650613A
- Authority
- JP
- Japan
- Prior art keywords
- variance
- central frequency
- film thickness
- wave device
- surface wave
- 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.)
- Pending
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
- H03H9/64—Filters using surface acoustic waves
- H03H9/6403—Programmable 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
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6436—Coupled resonator filters having one acoustic track only
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To reduce the variance of the characteristics due to the variance of the film thickness for the elastic surface wave device possessing a resonator and then connecting the variable inductance element in parallel or series to the metal strip to give an adjustment to the central frequency of the band blocking property. CONSTITUTION:The variable inductance element 8 is connected in parallel or series to the metal strip 3 to vary the inductance. As a result, the resonance property of the strip 3 varies, and thus the central frequency of the band blocking property can be adjusted. In this way, the desired central frequency can be obtained even in case when the central frequency may have a variance caused by the variance of the film thickness of the strip 3. As a result, the variance of the characteristics due to the variance of the film thickness can be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12530179A JPS5650613A (en) | 1979-10-01 | 1979-10-01 | Elastic surface wave device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12530179A JPS5650613A (en) | 1979-10-01 | 1979-10-01 | Elastic surface wave device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5650613A true JPS5650613A (en) | 1981-05-07 |
Family
ID=14906689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12530179A Pending JPS5650613A (en) | 1979-10-01 | 1979-10-01 | Elastic surface wave device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5650613A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61202511A (en) * | 1985-03-06 | 1986-09-08 | Japan Radio Co Ltd | Surface acoustic wave filter |
JPS6392421U (en) * | 1986-12-05 | 1988-06-15 | ||
USRE37375E1 (en) | 1991-10-28 | 2001-09-18 | Fujitsu Limited | Surface acoustic wave filter |
USRE40036E1 (en) | 1991-10-28 | 2008-01-29 | Fujitsu Limited | Surface acoustic wave filter |
-
1979
- 1979-10-01 JP JP12530179A patent/JPS5650613A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61202511A (en) * | 1985-03-06 | 1986-09-08 | Japan Radio Co Ltd | Surface acoustic wave filter |
JPS6392421U (en) * | 1986-12-05 | 1988-06-15 | ||
JPH0450652Y2 (en) * | 1986-12-05 | 1992-11-30 | ||
USRE37375E1 (en) | 1991-10-28 | 2001-09-18 | Fujitsu Limited | Surface acoustic wave filter |
USRE37790E1 (en) | 1991-10-28 | 2002-07-16 | Fujitsu Limited | Surface acoustic wave filter |
USRE40036E1 (en) | 1991-10-28 | 2008-01-29 | Fujitsu Limited | Surface acoustic wave filter |
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