JPS59118322U - surface acoustic wave filter - Google Patents

surface acoustic wave filter

Info

Publication number
JPS59118322U
JPS59118322U JP936683U JP936683U JPS59118322U JP S59118322 U JPS59118322 U JP S59118322U JP 936683 U JP936683 U JP 936683U JP 936683 U JP936683 U JP 936683U JP S59118322 U JPS59118322 U JP S59118322U
Authority
JP
Japan
Prior art keywords
surface acoustic
wave filter
acoustic wave
phase difference
input
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
Application number
JP936683U
Other languages
Japanese (ja)
Inventor
修三 和高
幸一郎 三須
武田 文雄
Original Assignee
三菱電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP936683U priority Critical patent/JPS59118322U/en
Publication of JPS59118322U publication Critical patent/JPS59118322U/en
Pending legal-status Critical Current

Links

Landscapes

  • Waveguides (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (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

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来の弾性表面波フィルタを示す図、第2図は
この考案に係る弾性表面波フィルタの一実施例を示す図
である。図中、1は圧電基板、2はすだれ状電極、3は
コイル、4はリード線、5は高誘電率基板、6はストリ
ップ線路、7はリード線4のとり出し位置である。なお
1、図中、同一あるいは相当部分には同一符号を付して
示しである。
FIG. 1 is a diagram showing a conventional surface acoustic wave filter, and FIG. 2 is a diagram showing an embodiment of the surface acoustic wave filter according to this invention. In the figure, 1 is a piezoelectric substrate, 2 is an interdigital electrode, 3 is a coil, 4 is a lead wire, 5 is a high dielectric constant substrate, 6 is a strip line, and 7 is a position where the lead wire 4 is taken out. 1. In the figures, the same or corresponding parts are denoted by the same reference numerals.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 2組のすだれ状電極を4分の1波長離して配置し、一方
のすだれ状電極の入出力電気信号と他方のすだれ状電極
の入出力電気信号との間に90度の位相差を与えて、す
だれ状電極により励振あるいは受信される弾性表面波の
伝ばん方向を一方向、   となるようにした弾性表面
波フィルタにおいて、上記90度の位相差を高誘電率基
板とストリップ線路とを用いて与えるようにしたことを
特徴とする弾性表面波フィルタ。
Two pairs of interdigital electrodes are placed one-fourth of a wavelength apart, and a 90 degree phase difference is created between the input and output electrical signals of one interdigital electrode and the input and output electrical signals of the other interdigital electrode. In a surface acoustic wave filter in which the propagation direction of surface acoustic waves excited or received by interdigital electrodes is unidirectional, the above 90 degree phase difference is achieved by using a high dielectric constant substrate and a strip line. A surface acoustic wave filter characterized in that it gives
JP936683U 1983-01-26 1983-01-26 surface acoustic wave filter Pending JPS59118322U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP936683U JPS59118322U (en) 1983-01-26 1983-01-26 surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP936683U JPS59118322U (en) 1983-01-26 1983-01-26 surface acoustic wave filter

Publications (1)

Publication Number Publication Date
JPS59118322U true JPS59118322U (en) 1984-08-09

Family

ID=30140831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP936683U Pending JPS59118322U (en) 1983-01-26 1983-01-26 surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS59118322U (en)

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