JPS5717217A - Cavity type elastic surface wave resonator - Google Patents
Cavity type elastic surface wave resonatorInfo
- Publication number
- JPS5717217A JPS5717217A JP9238580A JP9238580A JPS5717217A JP S5717217 A JPS5717217 A JP S5717217A JP 9238580 A JP9238580 A JP 9238580A JP 9238580 A JP9238580 A JP 9238580A JP S5717217 A JPS5717217 A JP S5717217A
- Authority
- JP
- Japan
- Prior art keywords
- nearest
- transducer
- elastic surface
- surface wave
- wave resonator
- 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
- H03H9/25—Constructional features of resonators using surface acoustic waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To increase the resonance sharpness, by selecting the center interval of an electrode finger to a specified value. CONSTITUTION:The l1, l2 are selected to meet equations, where l1 is a central distance between an electrode finger 8 nearest a reflector 6 in the electrodes 8 of electrodes 9, 10 of a transducer 3 and a stripe-shaped body 11 nearest the transducer 3 in the stripe-shaped body 11 of the reflector 6, and l2 is a central distance between the electrode finger 8 nearest a reflector 7 in the electrode fingers 8 of the electrodes 8, 9 if the transducer 3 and the stripe-shaped body 11 nearest the transducer 3. In equations, lambda is the wavelength of elastic surface waves in resonance frequency, and (n), (m) are natural numbers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9238580A JPS5717217A (en) | 1980-07-07 | 1980-07-07 | Cavity type elastic surface wave resonator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9238580A JPS5717217A (en) | 1980-07-07 | 1980-07-07 | Cavity type elastic surface wave resonator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5717217A true JPS5717217A (en) | 1982-01-28 |
Family
ID=14052950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9238580A Pending JPS5717217A (en) | 1980-07-07 | 1980-07-07 | Cavity type elastic surface wave resonator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5717217A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6212206A (en) * | 1985-07-10 | 1987-01-21 | Hitachi Ltd | Surface acoustic wave resonator |
JPH02220510A (en) * | 1989-02-21 | 1990-09-03 | Matsushima Kogyo Co Ltd | Saw resonator |
US5831493A (en) * | 1995-08-14 | 1998-11-03 | Murata Manufacturing Co., Ltd. | Surface acoustic wave ladder filter utilizing a generated spurious component of the parallel arm |
US6025763A (en) * | 1996-03-14 | 2000-02-15 | Oki Electric Industry Co., Ltd. | Resonator-type surface-acoustic-wave ladder filter with improved upper stopband attenuation and reduced insertion loss |
-
1980
- 1980-07-07 JP JP9238580A patent/JPS5717217A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6212206A (en) * | 1985-07-10 | 1987-01-21 | Hitachi Ltd | Surface acoustic wave resonator |
JPH02220510A (en) * | 1989-02-21 | 1990-09-03 | Matsushima Kogyo Co Ltd | Saw resonator |
US5831493A (en) * | 1995-08-14 | 1998-11-03 | Murata Manufacturing Co., Ltd. | Surface acoustic wave ladder filter utilizing a generated spurious component of the parallel arm |
US6025763A (en) * | 1996-03-14 | 2000-02-15 | Oki Electric Industry Co., Ltd. | Resonator-type surface-acoustic-wave ladder filter with improved upper stopband attenuation and reduced insertion loss |
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