JPS59164329U - Chip type piezoelectric filter - Google Patents
Chip type piezoelectric filterInfo
- Publication number
- JPS59164329U JPS59164329U JP5840783U JP5840783U JPS59164329U JP S59164329 U JPS59164329 U JP S59164329U JP 5840783 U JP5840783 U JP 5840783U JP 5840783 U JP5840783 U JP 5840783U JP S59164329 U JPS59164329 U JP S59164329U
- Authority
- JP
- Japan
- Prior art keywords
- filter unit
- stage filter
- electrode
- electrodes
- stage
- 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
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (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3段のエネルギー閉じ込め形圧電フィルタの回
路図、第2図は本考案に係るチップ形圧電フィルタの一
実施例の縦断面図、第3図a1第3図すおよび第3図C
は夫々第2図のチップ形圧電フィルタの初段フィルタユ
ニット、中間段フィルタユニットおよび終段フィルタユ
ニ:ントの平面図、第4図は第2図のチップ形圧電フィ
ルタの斜視図、第5図は第2図のチップ形圧電フィルタ
の等価回路図である。
11.12・・・外装板、13・・・初段フィルタユニ
ット、14・・・中間段フィルタユニット、15・・・
終段フィルタユニット、16.17・・・分割電極、1
8・・・アース電極、19,20.21・・・引出電極
、23.24・・・コンデンサ電極、26.27・・・
分割電極、28・・・アース電極、29.30.31・
・・引出電極、33,34,36.37・・・コンデン
サ電極、46.47・・・分割電極、48・・・アース
電極、49.50・・・引出電極、53.54・・・コ
ンデンサ電極、61・・・接着剤、62・・・入力端子
、63・・・出力端子、64.65・・・アース端子、
67.68・・・接続電極。Fig. 1 is a circuit diagram of a three-stage energy trap type piezoelectric filter, Fig. 2 is a vertical cross-sectional view of an embodiment of a chip-type piezoelectric filter according to the present invention, Fig. 3 a1, Fig. 3 S, and Fig. 3 C.
are respectively a plan view of the first stage filter unit, intermediate stage filter unit, and final stage filter unit of the chip type piezoelectric filter shown in Figure 2, Figure 4 is a perspective view of the chip type piezoelectric filter shown in Figure 2, and Figure 5 is a plan view of the chip type piezoelectric filter shown in Figure 2. FIG. 3 is an equivalent circuit diagram of the chip-type piezoelectric filter of FIG. 2; 11.12... Exterior plate, 13... First stage filter unit, 14... Intermediate stage filter unit, 15...
Final stage filter unit, 16.17... divided electrode, 1
8... Earth electrode, 19, 20.21... Extraction electrode, 23.24... Capacitor electrode, 26.27...
Split electrode, 28... Earth electrode, 29.30.31.
...Extraction electrode, 33,34,36.37...Capacitor electrode, 46.47...Divided electrode, 48...Earth electrode, 49.50...Extraction electrode, 53.54...Capacitor Electrode, 61... Adhesive, 62... Input terminal, 63... Output terminal, 64.65... Earth terminal,
67.68...Connection electrode.
Claims (1)
じ込め形厚み振動モードを用いるフィルタの分割電極お
よびアース電極を設けるとともに上記分割電極の二つお
よびアース電極に夫々導通するコンデンサ電極を設け、
これら分割電極およびアース電極から夫々上記圧電基板
の周縁に引出電極を引き出してなる初段フィルタユニッ
トと、該初段フィルタユニットにおいていま一つの分割
電極およびアース電極に夫々導通するコンデンサ電極を
さらに設けてなる中間段フィルタユニットと、上記初段
フィルタユニットと同一の電極構成を有する終段フィル
タユニットと、絶縁性の外装板とからなるチップ形圧電
フィルタであって、上記外装板を最外側に配し、上記初
段フィルタユニット、中間段フィルタユニットおよび終
段フィルタユニットを重ねて各々の重なり面を接着剤で
少くとも上記分割電極およびアース電極の上部に間隔を
おいて接着し、その外周面に上記引出電極に導通して初
段フィルタユニット、中間段フィルタユニットおよび終
段フィルタユニットをこの順に縦続接続して3段フィル
タとする接続電極を形成するとともに、該3段フィルタ
の入力端子、出力端子およびアース端子を上記外周面に
形成したことを特徴とするチップ形圧電フィルタ。A split electrode and a ground electrode of a filter that uses an energy trapping thickness vibration mode are provided on opposing main surfaces of a flat piezoelectric substrate, and a capacitor electrode is provided that is electrically connected to two of the split electrodes and the ground electrode, respectively.
A first-stage filter unit is formed by drawing out extraction electrodes from these divided electrodes and the ground electrode, respectively, to the periphery of the piezoelectric substrate, and an intermediate stage is formed by further providing capacitor electrodes that are electrically connected to the other divided electrode and the ground electrode, respectively, in the first-stage filter unit. A chip-type piezoelectric filter consisting of a stage filter unit, a final stage filter unit having the same electrode configuration as the first stage filter unit, and an insulating exterior plate, the exterior plate being disposed on the outermost side, and the first stage filter unit having the same electrode configuration as the first stage filter unit. The filter unit, intermediate stage filter unit, and final stage filter unit are stacked, and each overlapping surface is adhered with adhesive to at least the upper part of the above-mentioned split electrode and ground electrode, with a gap between them, and the outer peripheral surface thereof is electrically connected to the above-mentioned lead-out electrode. A first-stage filter unit, an intermediate-stage filter unit, and a final-stage filter unit are cascade-connected in this order to form connection electrodes that form a three-stage filter, and the input terminal, output terminal, and ground terminal of the three-stage filter are connected to the outer periphery. A chip-type piezoelectric filter characterized by being formed on a surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5840783U JPS59164329U (en) | 1983-04-18 | 1983-04-18 | Chip type piezoelectric filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5840783U JPS59164329U (en) | 1983-04-18 | 1983-04-18 | Chip type piezoelectric filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59164329U true JPS59164329U (en) | 1984-11-05 |
Family
ID=30188686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5840783U Pending JPS59164329U (en) | 1983-04-18 | 1983-04-18 | Chip type piezoelectric filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59164329U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0567943A (en) * | 1991-09-09 | 1993-03-19 | Murata Mfg Co Ltd | Piezoelectric resonator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4889647A (en) * | 1972-02-24 | 1973-11-22 | ||
JPS5127753A (en) * | 1974-08-31 | 1976-03-08 | Tdk Electronics Co Ltd | SERAMITSUKU FUIRUTAA |
JPS5351943A (en) * | 1976-10-21 | 1978-05-11 | Murata Manufacturing Co | Centralized multiple mode filter |
JPS5534575A (en) * | 1978-09-01 | 1980-03-11 | Matsushima Kogyo Co Ltd | Piezo-vibrator |
-
1983
- 1983-04-18 JP JP5840783U patent/JPS59164329U/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4889647A (en) * | 1972-02-24 | 1973-11-22 | ||
JPS5127753A (en) * | 1974-08-31 | 1976-03-08 | Tdk Electronics Co Ltd | SERAMITSUKU FUIRUTAA |
JPS5351943A (en) * | 1976-10-21 | 1978-05-11 | Murata Manufacturing Co | Centralized multiple mode filter |
JPS5534575A (en) * | 1978-09-01 | 1980-03-11 | Matsushima Kogyo Co Ltd | Piezo-vibrator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0567943A (en) * | 1991-09-09 | 1993-03-19 | Murata Mfg Co Ltd | Piezoelectric resonator |
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