JPH0429231U - - Google Patents
Info
- Publication number
- JPH0429231U JPH0429231U JP7024190U JP7024190U JPH0429231U JP H0429231 U JPH0429231 U JP H0429231U JP 7024190 U JP7024190 U JP 7024190U JP 7024190 U JP7024190 U JP 7024190U JP H0429231 U JPH0429231 U JP H0429231U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric filter
- base
- input
- electrodes
- electrode
- 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.)
- Granted
Links
- 239000011810 insulating material Substances 0.000 claims 4
- 239000002184 metal Substances 0.000 claims 4
- 239000000758 substrate Substances 0.000 claims 4
- 238000000605 extraction Methods 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 1
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
第１図ａ，ｂ、第２図ａ，ｂ、第３図ａ，ｂ、
第４図ａ，ｂ，ｃは本考案の実施例を示す図、第
５図は比較データを示す図、第６図は従来例を示
す図である。
１……圧電フイルタ、２１，３１，４１，５２
……導電層、７６……シールド電極。
Figure 1 a, b, Figure 2 a, b, Figure 3 a, b,
4a, b, and c are diagrams showing an embodiment of the present invention, FIG. 5 is a diagram showing comparative data, and FIG. 6 is a diagram showing a conventional example. 1...Piezoelectric filter, 21, 31, 41, 52
. . . conductive layer, 76 . . . shield electrode.
Claims (1)
絶縁材を介して貫通して設けられたベースにアー
ス端子を接続し、このベース上に設置された圧電
フイルタ素子をキヤンにて気密封止してなる圧電
フイルタにおいて、この入力端子、出力端子を導
電層を絶縁層で挟んだ３層構造のチユーブで被覆
するとともに、前記導電層を圧電フイルタのベー
スに接続したことを特徴とする圧電フイルタのシ
ールド構造。 (2) 少なくとも入出力端子が金属製のシエルに
絶縁材を介して貫通して設けられたベースにアー
ス端子を接続し、このベース上に設置された圧電
フイルタ素子をキヤンにて気密封止してなる圧電
フイルタにおいて、これら各端子を一体的に導電
層を絶縁層で挟んだ３層構造のシートで挟持する
とともに、前記導電層を前記アース端子あるいは
圧電フイルタのベースに接続したことを特徴とす
る圧電フイルタのシールド構造。 (3) 少なくとも入出力端子が金属製のシエルに
絶縁材を介して貫通して設けられたベースにアー
ス端子を接続し、このベース上に設置された圧電
フイルタ素子をキヤンにて気密封止してなる圧電
フイルタにおいて、各端子を延材させる溝を有す
る絶縁性の基台を端子導出部分に設置し、この基
台の前記溝には基台に接して導電層、その上部に
絶縁層が設けられており、この導電送を前記アー
ス端子あるいは圧電フイルタのベースに延出し、
接続したことを特徴とする圧電フイルタのシール
ド構造。 (4) 少なくとも入出力端子が金属製のシエルに
絶縁材を介して貫通して設けられたベースにアー
ス端子を接続し、このベース上に設置された圧電
フイルタ素子をキヤンにて気密封止してなる圧電
フイルタと、この圧電フイルタの底部に設けられ
た絶縁基板とからなり、この絶縁基板には前記各
端子の貫通する透孔と、これら透孔の内壁に設け
られた電極が設けられ、これら各電極のうち入出
力端子が接続される２つの電極は絶縁基板の圧電
フイルタに接する面から細幅の引出し電極を介し
て反対面に引き出され、入、出力電極を形成され
るとともに、少なくとも前記引出し電極の上部に
は絶縁層が設けられ、また前記アース端子が接続
される電極は前記絶縁基板の圧電フイルタに接す
る面の前記引出し電極以外の大部分を占めるシー
ルド電極に接続され、このシールド電極は前記反
対面において入、出力電極以外の大部分を占める
アース電極に接続され、外部に導出されているこ
とを特徴とする圧電フイルタのシールド構造。[Claims for Utility Model Registration] (1) A piezoelectric filter element having at least an input/output terminal connected to a base provided through a metal shell through an insulating material, and a ground terminal connected to the base, and installed on this base. In this piezoelectric filter, the input terminal and the output terminal are covered with a tube having a three-layer structure in which a conductive layer is sandwiched between insulating layers, and the conductive layer is connected to the base of the piezoelectric filter. A piezoelectric filter shield structure characterized by: (2) Connect a ground terminal to a base that has at least an input/output terminal penetrating the metal shell through an insulating material, and hermetically seal the piezoelectric filter element installed on this base with a can. The piezoelectric filter is characterized in that each of these terminals is integrally sandwiched between sheets having a three-layer structure in which a conductive layer is sandwiched between insulating layers, and the conductive layer is connected to the ground terminal or the base of the piezoelectric filter. Shield structure of piezoelectric filter. (3) Connect the ground terminal to a base that has at least an input/output terminal penetrating the metal shell through an insulating material, and hermetically seal the piezoelectric filter element installed on this base with a can. In a piezoelectric filter made of and extending this conductive transmission to the ground terminal or the base of the piezoelectric filter,
A piezoelectric filter shield structure characterized by a connection. (4) At least the input/output terminal is connected to a base provided through an insulating material through a metal shell, and the piezoelectric filter element installed on this base is hermetically sealed with a can. and an insulating substrate provided at the bottom of the piezoelectric filter, and the insulating substrate is provided with through holes through which each of the terminals passes and electrodes provided on the inner walls of these through holes, Of these electrodes, two electrodes to which the input/output terminals are connected are drawn out from the surface of the insulating substrate in contact with the piezoelectric filter to the opposite surface via narrow extraction electrodes, forming input and output electrodes, and at least An insulating layer is provided on the top of the extraction electrode, and the electrode to which the ground terminal is connected is connected to a shield electrode that occupies most of the surface of the insulating substrate that contacts the piezoelectric filter other than the extraction electrode. A shield structure for a piezoelectric filter, characterized in that the electrode is connected to a ground electrode, which occupies most of the area other than the input and output electrodes, on the opposite surface, and is led to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990070241U JP2505884Y2 (en) | 1990-07-02 | 1990-07-02 | Shield structure of piezoelectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990070241U JP2505884Y2 (en) | 1990-07-02 | 1990-07-02 | Shield structure of piezoelectric filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429231U true JPH0429231U (en) | 1992-03-09 |
| JP2505884Y2 JP2505884Y2 (en) | 1996-08-07 |
Family
ID=31606234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990070241U Expired - Lifetime JP2505884Y2 (en) | 1990-07-02 | 1990-07-02 | Shield structure of piezoelectric filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2505884Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5941913A (en) * | 1982-07-07 | 1984-03-08 | エリクソン ジーイー モービル コミュニケーションズ インコーポレーテッド | Monolithic crystal filter and method of producing same |
-
1990
- 1990-07-02 JP JP1990070241U patent/JP2505884Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5941913A (en) * | 1982-07-07 | 1984-03-08 | エリクソン ジーイー モービル コミュニケーションズ インコーポレーテッド | Monolithic crystal filter and method of producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2505884Y2 (en) | 1996-08-07 |
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