JPS6423611A - Polarized type surface acoustic wave resonator filter - Google Patents
Polarized type surface acoustic wave resonator filterInfo
- Publication number
- JPS6423611A JPS6423611A JP17976787A JP17976787A JPS6423611A JP S6423611 A JPS6423611 A JP S6423611A JP 17976787 A JP17976787 A JP 17976787A JP 17976787 A JP17976787 A JP 17976787A JP S6423611 A JPS6423611 A JP S6423611A
- Authority
- JP
- Japan
- Prior art keywords
- resonators
- saw
- acoustic wave
- surface acoustic
- signal
- 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
- 238000010897 surface acoustic wave method Methods 0.000 title abstract 7
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 1
- 230000009191 jumping Effects 0.000 abstract 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To realize a broad-band filter and further to realize a steep attenua tion characteristic, as well by constituting a polarized type SAW (surface acous tic wave) resonator filter with which jumping coupling can be made in such a way that SAW resonators are connected in parallel with each other and electrodes are two-dimensionally arranged. CONSTITUTION:Electric signals impressed from electric signal inputting terminals 11 and 12 are converted into surface waves by means of the interdigital transduc er IDT of a surface acoustic wave (SAW) resonator 16. SAW resonators 17 and 18 respectively operate as double mode resonators together with the other and the resonators 16-18 operate as multiplex mode filters, namely, as monolith ic crystal filters (MCF) in such a way that couplings K12, K23, and K13 are respectively produced between the resonators 16 and 17, resonators 17 and 18, and resonators 16 and 18. At frequencies, at which phases of the signal to a route 1 and signal to another route 2 offset each other, an attenuation pole is produced in a limited frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17976787A JPS6423611A (en) | 1987-07-18 | 1987-07-18 | Polarized type surface acoustic wave resonator filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17976787A JPS6423611A (en) | 1987-07-18 | 1987-07-18 | Polarized type surface acoustic wave resonator filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6423611A true JPS6423611A (en) | 1989-01-26 |
Family
ID=16071529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17976787A Pending JPS6423611A (en) | 1987-07-18 | 1987-07-18 | Polarized type surface acoustic wave resonator filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6423611A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04249907A (en) * | 1990-12-27 | 1992-09-04 | Murata Mfg Co Ltd | Surface acoustic wave filter |
| JPH04249906A (en) * | 1990-12-27 | 1992-09-04 | Murata Mfg Co Ltd | Surface acoustic wave filter |
| US6140890A (en) * | 1997-11-12 | 2000-10-31 | Nec Corporation | Saw filter with multiple reflector pairs |
| WO2025022954A1 (en) * | 2023-07-27 | 2025-01-30 | 京セラ株式会社 | Filter |
-
1987
- 1987-07-18 JP JP17976787A patent/JPS6423611A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04249907A (en) * | 1990-12-27 | 1992-09-04 | Murata Mfg Co Ltd | Surface acoustic wave filter |
| JPH04249906A (en) * | 1990-12-27 | 1992-09-04 | Murata Mfg Co Ltd | Surface acoustic wave filter |
| US6140890A (en) * | 1997-11-12 | 2000-10-31 | Nec Corporation | Saw filter with multiple reflector pairs |
| WO2025022954A1 (en) * | 2023-07-27 | 2025-01-30 | 京セラ株式会社 | Filter |
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