JPS59118322U - surface acoustic wave filter - Google Patents
surface acoustic wave filterInfo
- Publication number
- JPS59118322U JPS59118322U JP936683U JP936683U JPS59118322U JP S59118322 U JPS59118322 U JP S59118322U JP 936683 U JP936683 U JP 936683U JP 936683 U JP936683 U JP 936683U JP S59118322 U JPS59118322 U JP S59118322U
- Authority
- JP
- Japan
- Prior art keywords
- surface acoustic
- wave filter
- acoustic wave
- phase difference
- input
- 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
Landscapes
- Waveguides (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の弾性表面波フィルタを示す図、第２図は
この考案に係る弾性表面波フィルタの一実施例を示す図
である。図中、１は圧電基板、２はすだれ状電極、３は
コイル、４はリード線、５は高誘電率基板、６はストリ
ップ線路、７はリード線４のとり出し位置である。なお
１、図中、同一あるいは相当部分には同一符号を付して
示しである。FIG. 1 is a diagram showing a conventional surface acoustic wave filter, and FIG. 2 is a diagram showing an embodiment of the surface acoustic wave filter according to this invention. In the figure, 1 is a piezoelectric substrate, 2 is an interdigital electrode, 3 is a coil, 4 is a lead wire, 5 is a high dielectric constant substrate, 6 is a strip line, and 7 is a position where the lead wire 4 is taken out. 1. In the figures, the same or corresponding parts are denoted by the same reference numerals.
Claims (1)
のすだれ状電極の入出力電気信号と他方のすだれ状電極
の入出力電気信号との間に９０度の位相差を与えて、す
だれ状電極により励振あるいは受信される弾性表面波の
伝ばん方向を一方向、 となるようにした弾性表面
波フィルタにおいて、上記９０度の位相差を高誘電率基
板とストリップ線路とを用いて与えるようにしたことを
特徴とする弾性表面波フィルタ。Two pairs of interdigital electrodes are placed one-fourth of a wavelength apart, and a 90 degree phase difference is created between the input and output electrical signals of one interdigital electrode and the input and output electrical signals of the other interdigital electrode. In a surface acoustic wave filter in which the propagation direction of surface acoustic waves excited or received by interdigital electrodes is unidirectional, the above 90 degree phase difference is achieved by using a high dielectric constant substrate and a strip line. A surface acoustic wave filter characterized in that it gives
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP936683U JPS59118322U (en) | 1983-01-26 | 1983-01-26 | surface acoustic wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP936683U JPS59118322U (en) | 1983-01-26 | 1983-01-26 | surface acoustic wave filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59118322U true JPS59118322U (en) | 1984-08-09 |
Family
ID=30140831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP936683U Pending JPS59118322U (en) | 1983-01-26 | 1983-01-26 | surface acoustic wave filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59118322U (en) |
-
1983
- 1983-01-26 JP JP936683U patent/JPS59118322U/en active Pending
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