JPS62100715U

JPS62100715U -

Info

Publication number: JPS62100715U
Application number: JP19247285U
Authority: JP
Priority date: 1985-12-14
Filing date: 1985-12-14
Publication date: 1987-06-26

Description

[Brief explanation of the drawing]

第１図は本考案に係るセラミツクトラツプ素子
の平面図、第２図は同じくその背面図、第３図Ａ
は共振部の電極対向面積を等しくした従来のセラ
ミツクトラツプ素子のトラツプ特性図、第３図Ｂ
はその測定回路図、第４図Ａは信号入力側の共振
部の電極対向面積を信号出力側の共振部の電極対
向面積より小さくしたセラミツクトラツプ素子の
トラツプ特性図、第４図Ｂはその測定回路図、第
５図Ａは信号入力側の共振部の電極対向面積を信
号出力側の共振部の電極対向面積より大きくした
セラミツクトラツプ素子のトラツプ特性図、第５
図Ｂはその測定回路図、第６図は従来のセラミツ
クトラツプ素子の平面図、第７図は同じくその背
面図、第８図は第６図及び第７図に示した従来の
セラミツクトラツプ素子の回路記号図、第９図は
トラツプ特性図である。Ａ，Ｂ…共振部、１…圧電セラミツク基板、２
〜５…電極。 Figure 1 is a plan view of a ceramic trap element according to the present invention, Figure 2 is a rear view thereof, and Figure 3A.
Figure 3B is a trap characteristic diagram of a conventional ceramic trap element with equal electrode facing areas in the resonant part.
Figure 4A is the measurement circuit diagram, Figure 4A is a trap characteristic diagram of a ceramic trap element in which the electrode facing area of the resonant part on the signal input side is smaller than the electrode facing area of the signal output side resonant part, and Figure 4B is its trap characteristic. Measurement circuit diagram, Fig. 5A is a trap characteristic diagram of a ceramic trap element in which the electrode facing area of the resonant part on the signal input side is larger than the electrode facing area of the resonant part on the signal output side.
Figure B is a measurement circuit diagram, Figure 6 is a plan view of a conventional ceramic trap element, Figure 7 is a rear view thereof, and Figure 8 is a diagram of the conventional ceramic trap element shown in Figures 6 and 7. The circuit symbol diagram of the element, FIG. 9, is a trap characteristic diagram. A, B...Resonance part, 1... Piezoelectric ceramic substrate, 2
~5...electrode.

Claims

[Claims for Utility Model Registration] (1) In a ceramic trap element in which at least two resonant parts are formed spaced apart on a piezoelectric ceramic substrate, and a signal is transmitted from one resonant part to the other resonant part. . A ceramic trap element, characterized in that the impedances of the resonant parts are different from each other. (2) A utility model characterized in that each of the resonant parts is a pair of electrodes formed at opposing positions on both sides of the piezoelectric ceramic substrate in the thickness direction, and the opposing areas of these electrode pairs are made different from each other. A ceramic trap element according to claim 1. (3) Among the resonant parts, the area of the electrodes of the resonant part located on the signal input side is larger than the area of the electrodes of the resonant part located on the signal output side. The ceramic trap element according to item 2.