JPS6055119U

JPS6055119U - Surface acoustic wave resonator device

Info

Publication number: JPS6055119U
Application number: JP14650483U
Authority: JP
Inventors: 藪川　和久; 八瀬　朋芳; 喜多　重之
Original assignee: 株式会社東芝
Priority date: 1983-09-21
Filing date: 1983-09-21
Publication date: 1985-04-18

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

[Brief explanation of drawings]

第１図は従来の弾性表面波共振子装置を示す拡大上面図
、第２図は本考案の一実施例の弾性表面波共振子装置の
拡大上面図、第３図は本考案の他の実施例の弾性表面波
共振子装置の要部を示す拡大部分上面図である。１・・・・・・圧電基板、２１，２□・・・・・・弾性
表面波共振子、３１ｙ　　３２”””励振電極、３１ａ
１　３１ｂｙ　　３゜ａ　ｔ　　３２　ｂ　”・べし形
電極、４ｎａ、　　４１−ｂ、　　４２ａ、４□ｂ・・
・・・・グレーティング反射電極、５ＩＮ・・・・・・
入力端子用ポンディングパッド、６　ｏ　ｕ　ｔ　ｔ７
ｏｕｔ・・・・・・出力端子用ポンディングパッド、８
ＩＮ・・・・・・入力信号用配線パターン、９ｏｕＬ　
　ＩＧｏｕｔ・・・・・・出力信号用配線パターン。FIG. 1 is an enlarged top view of a conventional surface acoustic wave resonator device, FIG. 2 is an enlarged top view of a surface acoustic wave resonator device according to an embodiment of the present invention, and FIG. 3 is an enlarged top view of another embodiment of the present invention. FIG. 2 is an enlarged partial top view showing main parts of an example surface acoustic wave resonator device. 1...Piezoelectric substrate, 21, 2□...Surface acoustic wave resonator, 31y 32"""Excitation electrode, 31a
1 31by 3゜a t 32b'', beveled electrode, 4na, 41-b, 42a, 4□b...
・・・Grating reflective electrode, 5IN・・・・・・
Ponding pad for input terminal, 6 o ut t7
out・・・・・・Ponding pad for output terminal, 8
IN・・・・・・Wiring pattern for input signal, 9ouL
IGout・・・Wiring pattern for output signal.

Claims

[Scope of utility model registration request]

(1) Two sets of surface acoustic wave resonators are formed in parallel on a piezoelectric substrate, each consisting of an excitation electrode formed by combining a pair of comb-shaped electrodes and a pair of grating reflection electrodes placed between the excitation electrodes. On the other hand, one input terminal bonding pad and two output terminal bonding pads are sequentially formed near one side edge of the piezoelectric substrate in parallel with the surface acoustic wave resonator, and each of the acoustic wave The comb-shaped electrodes on the inner side of the excitation electrode in the resonator are connected to the input terminal honding pads by a common input signal wiring pattern, and the comb-shaped electrodes on the outer side are connected to separate output signals. In the surface acoustic wave resonator device, which is separately connected to each of the output terminal honding pads by a wiring pattern, among the comb-shaped electrodes located outside the excitation electrode in each of the surface acoustic wave resonators, A surface acoustic wave resonator device characterized in that a comb-shaped electrode on a side remote from each body pad is connected to the output signal wiring pattern at a tip of an electrode finger portion of the comb-shaped electrode.

(2) Each output signal wiring pattern connected to the input signal wiring pattern and the electrode finger portions of the comb-shaped electrodes passes between the grating electrodes of both surface acoustic wave resonators, respectively, to the input terminal hond. A surface acoustic wave resonator device according to claim 1, which is connected to a pad and a bonding pad for an output terminal.