JPS6216048B2 - - Google Patents
Info
- Publication number
- JPS6216048B2 JPS6216048B2 JP10495377A JP10495377A JPS6216048B2 JP S6216048 B2 JPS6216048 B2 JP S6216048B2 JP 10495377 A JP10495377 A JP 10495377A JP 10495377 A JP10495377 A JP 10495377A JP S6216048 B2 JPS6216048 B2 JP S6216048B2
- Authority
- JP
- Japan
- Prior art keywords
- split
- electrode
- idt
- electrode finger
- reflection
- 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
Links
- 238000010897 surface acoustic wave method Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 8
- 230000001902 propagating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/14552—Transducers of particular shape or position comprising split fingers
-
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
- H03H9/0285—Means for compensation or elimination of undesirable effects of reflections of triple transit echo
-
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10495377A JPS5438741A (en) | 1977-09-02 | 1977-09-02 | Elastic surface wave element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10495377A JPS5438741A (en) | 1977-09-02 | 1977-09-02 | Elastic surface wave element |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5438741A JPS5438741A (en) | 1979-03-23 |
JPS6216048B2 true JPS6216048B2 (it) | 1987-04-10 |
Family
ID=14394450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10495377A Granted JPS5438741A (en) | 1977-09-02 | 1977-09-02 | Elastic surface wave element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5438741A (it) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3267639D1 (en) * | 1981-02-04 | 1986-01-09 | Matsushita Electric Ind Co Ltd | Surface acoustic wave device |
EP0255263B1 (en) * | 1986-07-29 | 1995-01-04 | R F Monolithics, Inc. | Transducer |
US5521565A (en) * | 1988-09-28 | 1996-05-28 | Siemens Aktiengesellschaft | Surface wave interdigital transducer and surface wave filter with symmetric or predeterminable asymmetric transfer characteristic between input and output |
-
1977
- 1977-09-02 JP JP10495377A patent/JPS5438741A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5438741A (en) | 1979-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3606944B2 (ja) | Sawフィルタ | |
US7023300B2 (en) | Surface wave devices with low passband ripple | |
EP0026114B1 (en) | Surface acoustic wave device | |
JPH04506442A (ja) | 表面波反射器フィルタ | |
JPS60140917A (ja) | 弾性表面波トランスジユ−サ | |
US9667224B2 (en) | Electroacoustic filter comprising low-pass characteristics | |
US4370633A (en) | Acoustic wave bandpass electrical filters | |
JPH05347535A (ja) | 弾性表面波フィルタ装置 | |
JPS6216048B2 (it) | ||
JPH0245848B2 (it) | ||
JPS6231860B2 (it) | ||
JPS5944802B2 (ja) | 弾性表面波素子 | |
JP3137064B2 (ja) | 弾性表面波フィルタ | |
EP0840446B1 (en) | Unidirectional surface acoustic wave filter | |
JP2725697B2 (ja) | 弾性表面波装置 | |
JPH026670Y2 (it) | ||
JP2685537B2 (ja) | 弾性表面波装置、その製作方法、その調整方法、及びそれを用いた通信装置 | |
JPS5937723A (ja) | 弾性表面波共振器型フイルタ装置 | |
JPS585605B2 (ja) | 弾性表面波トランスジユ−サ | |
US4378540A (en) | Acoustic surface wave device | |
JPS6130338Y2 (it) | ||
JPS6156895B2 (it) | ||
Martin et al. | New SPUDT cell structures | |
JPS6382115A (ja) | 弾性表面波装置 | |
JPH047125B2 (it) |