JPH021919U - - Google Patents
Info
- Publication number
- JPH021919U JPH021919U JP7954188U JP7954188U JPH021919U JP H021919 U JPH021919 U JP H021919U JP 7954188 U JP7954188 U JP 7954188U JP 7954188 U JP7954188 U JP 7954188U JP H021919 U JPH021919 U JP H021919U
- Authority
- JP
- Japan
- Prior art keywords
- surface acoustic
- acoustic wave
- wave filter
- substrate
- capacitor
- 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 description 12
- 239000000758 substrate Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims 2
- 239000003989 dielectric material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図は本考案の第１の実施例を示す側面図、
第２図は、本考案の第２の実施例を示す側面図、
第３図は本考案の等価回路図、第４図は減衰量―
周波数特性図、第５図はアドミタンス―周波数特
性図、第６図は第５図の特性を書き換えた減衰量
―周波数特性図、第７図は従来の弾性表面波フイ
ルタチツプの平面図、第８図は弾性表面波フイル
タを基板上に搭載した従来例を示す側面図である
。
１０：弾性表面波フイルタチツプ、１１：圧電
基板、１２：入出力用ボンデイングワイヤ、１３
：アース用ボンデイングワイヤ、１４：入力（出
力）リード端子、１５：アースリード端子、５０
：フタ、５１：ステム、５２：ガラス、５３：基
板、５４：入力（出力）導体、５５：ハンダ、５
６：アース導体、６０：誘電体部材、６１：空隙
。
FIG. 1 is a side view showing the first embodiment of the present invention;
FIG. 2 is a side view showing a second embodiment of the present invention;
Figure 3 is an equivalent circuit diagram of the present invention, and Figure 4 is the amount of attenuation.
Figure 5 is an admittance-frequency characteristic diagram, Figure 6 is an attenuation-frequency characteristic diagram that is a rewrite of the characteristic in Figure 5, Figure 7 is a plan view of a conventional surface acoustic wave filter chip, and Figure 8 is a diagram of frequency characteristics. 1 is a side view showing a conventional example in which a surface acoustic wave filter is mounted on a substrate. 10: Surface acoustic wave filter chip, 11: Piezoelectric substrate, 12: Input/output bonding wire, 13
: Earth bonding wire, 14: Input (output) lead terminal, 15: Earth lead terminal, 50
: Lid, 51: Stem, 52: Glass, 53: Board, 54: Input (output) conductor, 55: Solder, 5
6: Earth conductor, 60: Dielectric member, 61: Air gap.
Claims (1)
性表面波変換器をそれぞれ配設して構成する弾性
表面波フイルタにおいて、 該弾性表面波フイルタと前記弾性表面波フイル
タを搭載する基板との間に誘電体及び空隙の一方
からなる容量を設け、前記弾性表面波フイルタに
所定容量を並列に接続したことを特徴とする弾性
表面波装置。[Claims for Utility Model Registration] A surface acoustic wave filter configured by disposing surface acoustic wave transducers for exciting and receiving surface acoustic waves on a piezoelectric substrate, the surface acoustic wave filter and the surface acoustic wave filter comprising: A surface acoustic wave device, characterized in that a capacitor made of one of a dielectric material and a gap is provided between the surface acoustic wave filter and a substrate on which the surface acoustic wave filter is mounted, and a predetermined capacitor is connected in parallel to the surface acoustic wave filter.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7954188U JPH021919U (en) | 1988-06-17 | 1988-06-17 | |
| DE3853513T DE3853513T2 (en) | 1987-11-20 | 1988-11-14 | Surface acoustic wave arrangement. |
| EP88118923A EP0316836B1 (en) | 1987-11-20 | 1988-11-14 | Surface-acoustic-wave device |
| US07/375,406 US4931755A (en) | 1987-11-20 | 1988-11-21 | Surface-acoustic-wave device with a capacitance coupled between input and output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7954188U JPH021919U (en) | 1988-06-17 | 1988-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH021919U true JPH021919U (en) | 1990-01-09 |
Family
ID=31304413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7954188U Pending JPH021919U (en) | 1987-11-20 | 1988-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021919U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5636817A (en) * | 1979-09-03 | 1981-04-10 | Nissin Electric Co Ltd | Arc rotary switch |
| JPS574613A (en) * | 1980-06-11 | 1982-01-11 | Murata Mfg Co Ltd | Elastic surface wave device |
| JPS583413A (en) * | 1981-06-30 | 1983-01-10 | Fujitsu Ltd | Impulse responsive automatic equalizer |
-
1988
- 1988-06-17 JP JP7954188U patent/JPH021919U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5636817A (en) * | 1979-09-03 | 1981-04-10 | Nissin Electric Co Ltd | Arc rotary switch |
| JPS574613A (en) * | 1980-06-11 | 1982-01-11 | Murata Mfg Co Ltd | Elastic surface wave device |
| JPS583413A (en) * | 1981-06-30 | 1983-01-10 | Fujitsu Ltd | Impulse responsive automatic equalizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2002232253A (en) | Microwave package device including thin film bulk acoustic resonator mounted using flip chip bonding technology and method of manufacturing the same | |
| EP1017169A3 (en) | Surface acoustic wave device | |
| CN1536763B (en) | Surface acoustic wave device and its manufacture method | |
| EP0829958A2 (en) | Surface acoustic wave apparatus | |
| EP0793340A2 (en) | Saw filter encapsulated in a ceramic package with capacitance incorporated therein | |
| JPH09321573A (en) | Surface acoustic wave filter device | |
| JP2000209061A (en) | Surface acoustic wave element and device | |
| JPH09162691A (en) | Semiconductor device having surface acoustic wave element and manufacturing method thereof | |
| JPH09162693A (en) | Surface acoustic wave element | |
| JP3389530B2 (en) | Semiconductor device | |
| JPH0716427U (en) | Surface acoustic wave filter duplexer | |
| JPS59119911A (en) | Piezoelectric oscillator | |
| JP3253333B2 (en) | Method of adjusting characteristics of surface acoustic wave filter | |
| JP3301833B2 (en) | Surface acoustic wave filter | |
| JPH04310009A (en) | Chip component and its mount structure | |
| JPH0323704Y2 (en) | ||
| JPH024515Y2 (en) | ||
| JPH0392009A (en) | Surface acoustic wave device | |
| JPH1197968A (en) | Chip type surface acoustic wave device | |
| JPS6392421U (en) | ||
| JPS61139016U (en) | ||
| JPH0155608B2 (en) | ||
| JPS6129207A (en) | elastic wave device | |
| JPH0758586A (en) | High frequency circuit device | |
| JPH0467817U (en) |