JPH0467817U - - Google Patents
Info
- Publication number
- JPH0467817U JPH0467817U JP11083590U JP11083590U JPH0467817U JP H0467817 U JPH0467817 U JP H0467817U JP 11083590 U JP11083590 U JP 11083590U JP 11083590 U JP11083590 U JP 11083590U JP H0467817 U JPH0467817 U JP H0467817U
- Authority
- JP
- Japan
- Prior art keywords
- input
- output
- base
- external terminal
- ground line
- 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
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010897 surface acoustic wave method Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図は本考案の一実施例を示す弾性表面波フ
イルタの一部省略平面図、第２図は従来の弾性表
面波フイルタの概略の平面図、第３図は弾性表面
波フイルタの周波数特性図、第４図は第１図のＡ
−Ａ線断面図、第５図は第１図のＢ−Ｂ線断面図
である。
１０……ベース、１１……キヤツプ、１２……
入力用外部端子、１３……出力用外部端子、１４
……ベースアース用外部端子、１５，１６……ア
ース用外部端子、１７……絶縁部材、２０……圧
電基板、２１〜２４……弾性表面波共振子、２１
ａ〜２４ａ……インターデイジタル電極、２１ｂ
，２１ｃ〜２４ｂ，２４ｃ……グレーテイング反
射器、２４ａ〜２５ｆ……導体パターン、３１…
…入力用リード線、３２……出力用リード線、３
３，３４……第２のアース用リード線、３５，３
６……第１のアース用リード線、ＧＬ１……入力
側アースライン、ＧＬ２……出力側アースライン
、ＴＬ１０……端子ライン。
Fig. 1 is a partially omitted plan view of a surface acoustic wave filter showing an embodiment of the present invention, Fig. 2 is a schematic plan view of a conventional surface acoustic wave filter, and Fig. 3 is the frequency characteristic of the surface acoustic wave filter. Figure 4 is A of Figure 1.
-A sectional view, and FIG. 5 is a BB sectional view of FIG. 10...Base, 11...Cap, 12...
External terminal for input, 13... External terminal for output, 14
... External terminal for base earth, 15, 16 ... External terminal for ground, 17 ... Insulating member, 20 ... Piezoelectric substrate, 21 to 24 ... Surface acoustic wave resonator, 21
a to 24a...interdigital electrode, 21b
, 21c to 24b, 24c... grating reflector, 24a to 25f... conductor pattern, 31...
...Input lead wire, 32...Output lead wire, 3
3, 34...Second ground lead wire, 35, 3
6...First ground lead wire, GL1...Input side ground line, GL2...Output side ground line, TL10...Terminal line.
Claims (1)
ライン上に所定距離隔てて前記ベースの底面に突
設された入力用外部端子及び出力用外部端子と、 前記端子ライン上において前記入力用外部端子
と出力用外部端子間に位置し前記ベースとは絶縁
された状態で前記ベースの底面に突設されたアー
ス用外部端子と、 前記ベース上に固着された圧電基板と、 前記圧電基板上に形成され直列接続された複数
個の弾性表面波共振子を有し、入力側アースライ
ンと出力側アースラインがそれぞれ共通接続され
た弾性表面波共振子回路と、を備え、 前記入力側アースライン及び出力側アースライ
ンが前記弾性表面波共振子回路の入、出力側間を
横切るように前記弾性表面波共振子を配置形成し
、 前記弾性表面波共振子回路の入力側及び出力側
を入力用リード線及び出力用リード線を介して前
記入力用外部端子及び出力用外部端子にそれぞれ
接続し、 前記入力側アースライン及び出力側アースライ
ンの内、前記端子ラインからの遠距離側のアース
ラインを、前記入力用リード線と出力用リード線
間に配置された第１のアース用リード線を介して
前記アース用外部端子に接続し、かつ前記端子ラ
インからの近距離側のアースラインを第２のアー
ス用リード線を介して前記ベースに接続した、 ことを特徴とする弾性表面波フイルタ。[Claims for Utility Model Registration] A conductive base for a package; an input external terminal protruding from the bottom of the base at a predetermined distance on a linear terminal line while being insulated from the base; an external terminal for output; an external terminal for grounding located on the terminal line between the external terminal for input and the external terminal for output and protruding from the bottom surface of the base while being insulated from the base; An elastic surface having a piezoelectric substrate fixed on a base, a plurality of surface acoustic wave resonators formed on the piezoelectric substrate and connected in series, and an input side ground line and an output side ground line connected in common. a wave resonator circuit, the surface acoustic wave resonator is arranged and formed so that the input side ground line and the output side ground line cross between the input and output sides of the surface acoustic wave resonator circuit, Connect the input side and output side of the surface wave resonator circuit to the input external terminal and the output external terminal via input lead wires and output lead wires, respectively, and connect the input side ground line and the output side ground line to A ground line on a far side from the terminal line is connected to the external ground terminal via a first ground lead wire disposed between the input lead wire and the output lead wire, and A surface acoustic wave filter characterized in that a ground line on a short distance side from the terminal line is connected to the base via a second ground lead wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11083590U JPH0467817U (en) | 1990-10-23 | 1990-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11083590U JPH0467817U (en) | 1990-10-23 | 1990-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0467817U true JPH0467817U (en) | 1992-06-16 |
Family
ID=31858232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11083590U Pending JPH0467817U (en) | 1990-10-23 | 1990-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0467817U (en) |
-
1990
- 1990-10-23 JP JP11083590U patent/JPH0467817U/ja active Pending
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