KR920009064A - Electrode Formation Method of Surface Acoustic Wave Filter - Google Patents

Electrode Formation Method of Surface Acoustic Wave Filter Download PDF

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Publication number
KR920009064A
KR920009064A KR1019900017422A KR900017422A KR920009064A KR 920009064 A KR920009064 A KR 920009064A KR 1019900017422 A KR1019900017422 A KR 1019900017422A KR 900017422 A KR900017422 A KR 900017422A KR 920009064 A KR920009064 A KR 920009064A
Authority
KR
South Korea
Prior art keywords
acoustic wave
surface acoustic
wave filter
formation method
electrode formation
Prior art date
Application number
KR1019900017422A
Other languages
Korean (ko)
Other versions
KR930004355B1 (en
Inventor
김명기
Original Assignee
서주인
삼성전기 주식회사
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 서주인, 삼성전기 주식회사 filed Critical 서주인
Priority to KR1019900017422A priority Critical patent/KR930004355B1/en
Publication of KR920009064A publication Critical patent/KR920009064A/en
Application granted granted Critical
Publication of KR930004355B1 publication Critical patent/KR930004355B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

내용 없음.No content.

Description

표면탄성파 필터의 전극 형성방법Electrode formation method of surface acoustic wave filter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 함수 그래프도.1 is a functional graph of the present invention.

제2도는 원신호의 변곡점이 복원되지 못함을 표시한 그래프도.2 is a graph showing that the inflection point of the original signal cannot be restored.

제3도는 본 발명의 전극형성도.3 is an electrode formation diagram of the present invention.

Claims (1)

SAW 필터에서 전극형성시 연속함수 h(t)의 1차 미분함수 h'(t)가 제로(0)인 시간 t에 전극 IDT를 위치시키고, 상기 1차 미분함수 h'(t)가 변곡점 나타내고 2차 미분함수 h"(t)가 제로인 지점이 3개 나타났을때 3개중 두번째 제로인 지점에 전극 IDT를 위치시키도록 한 것을 특징으로 하는 표면탄성파 필터의 전극형성방법.In the SAW filter, when the electrode is formed, the electrode IDT is positioned at a time t when the first derivative h '(t) of the continuous function h (t) is zero (0), and the first derivative h' (t) represents the inflection point. A method for forming an electrode of a surface acoustic wave filter, characterized in that the electrode IDT is positioned at the second zero of three points when three points having a second derivative function h "(t) are zero. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900017422A 1990-10-30 1990-10-30 Electrode formming method for saw filter KR930004355B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900017422A KR930004355B1 (en) 1990-10-30 1990-10-30 Electrode formming method for saw filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900017422A KR930004355B1 (en) 1990-10-30 1990-10-30 Electrode formming method for saw filter

Publications (2)

Publication Number Publication Date
KR920009064A true KR920009064A (en) 1992-05-28
KR930004355B1 KR930004355B1 (en) 1993-05-26

Family

ID=19305366

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900017422A KR930004355B1 (en) 1990-10-30 1990-10-30 Electrode formming method for saw filter

Country Status (1)

Country Link
KR (1) KR930004355B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100632879B1 (en) * 1999-06-03 2006-10-16 신에쓰 가가꾸 고교 가부시끼가이샤 An apparatus for manufacturing glass base material and a method for manufacturing glass base material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100632879B1 (en) * 1999-06-03 2006-10-16 신에쓰 가가꾸 고교 가부시끼가이샤 An apparatus for manufacturing glass base material and a method for manufacturing glass base material

Also Published As

Publication number Publication date
KR930004355B1 (en) 1993-05-26

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