JPS62201528U - - Google Patents
Info
- Publication number
- JPS62201528U JPS62201528U JP9100286U JP9100286U JPS62201528U JP S62201528 U JPS62201528 U JP S62201528U JP 9100286 U JP9100286 U JP 9100286U JP 9100286 U JP9100286 U JP 9100286U JP S62201528 U JPS62201528 U JP S62201528U
- Authority
- JP
- Japan
- Prior art keywords
- wave device
- groove
- difference
- surface wave
- depth
- 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 claims 2
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図、第２図Ａ，Ｂはこの考案の原理を説明
する図である。第３図はこの考案の実施例である
表面波装置の断面図を示し、第４図Ａ〜Ｃは同表
面波装置の断面図、上面図、底面図をそれぞれ示
している。また第５図Ａ，Ｂは従来の表面波装置
を使用したテレビ用フイルタと本実施例の表面波
装置を使用したテレビ用フイルタの特性図を示し
、第６図はその従来のフイルタと本実施例を使用
したフイルタの隣接チヤネル音声信号トラツプ部
での減衰レベルを比較する図である。
１……表面波基板、２……入力側ＩＤＴ、３…
…出力側ＩＤＴ、４……深溝、５……浅溝、６…
…バルク波。
FIG. 1 and FIGS. 2A and 2B are diagrams explaining the principle of this invention. FIG. 3 shows a sectional view of a surface wave device that is an embodiment of this invention, and FIGS. 4A to 4C show a sectional view, a top view, and a bottom view of the same surface wave device, respectively. Furthermore, FIGS. 5A and 5B show characteristic diagrams of a television filter using a conventional surface wave device and a television filter using the surface wave device of this embodiment, and FIG. 6 shows the conventional filter and this embodiment. FIG. 3 is a diagram comparing attenuation levels in adjacent channel audio signal trap sections of filters using an example; 1...Surface wave board, 2...Input side IDT, 3...
...Output side IDT, 4...Deep groove, 5...Shallow groove, 6...
...Bulk waves.
Claims (1)
少なくとも２種類の溝を形成した表面波装置にお
いて、前記溝の浅溝と深溝の深さの差を、それぞ
れの溝で反射するバルク波の位相差が１８０°±
６０°以下になる大きさに設定したことを特徴と
する表面波装置。 (2) 前記浅溝と深溝の深さの差が６１．５±２
０．５μｍに設定されている表面波装置。[Claims for Utility Model Registration] (1) In a surface acoustic wave device in which at least two types of grooves having different depths are formed on the back surface of a surface acoustic wave substrate, the difference in depth between the shallow groove and the deep groove is determined. The phase difference of the bulk wave reflected by the groove is 180°±
A surface wave device characterized in that the surface wave device is set to a size that is 60° or less. (2) The difference in depth between the shallow groove and deep groove is 61.5±2.
Surface wave device set to 0.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9100286U JPS62201528U (en) | 1986-06-13 | 1986-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9100286U JPS62201528U (en) | 1986-06-13 | 1986-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62201528U true JPS62201528U (en) | 1987-12-22 |
Family
ID=30951385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9100286U Pending JPS62201528U (en) | 1986-06-13 | 1986-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201528U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56132806A (en) * | 1980-03-22 | 1981-10-17 | Murata Mfg Co Ltd | Elastic surface wave equipment |
-
1986
- 1986-06-13 JP JP9100286U patent/JPS62201528U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56132806A (en) * | 1980-03-22 | 1981-10-17 | Murata Mfg Co Ltd | Elastic surface wave equipment |
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