JP3638270B2 - 弾性表面波フィルタ及びそれを用いた通信機器 - Google Patents

弾性表面波フィルタ及びそれを用いた通信機器 Download PDF

Info

Publication number
JP3638270B2
JP3638270B2 JP2002201850A JP2002201850A JP3638270B2 JP 3638270 B2 JP3638270 B2 JP 3638270B2 JP 2002201850 A JP2002201850 A JP 2002201850A JP 2002201850 A JP2002201850 A JP 2002201850A JP 3638270 B2 JP3638270 B2 JP 3638270B2
Authority
JP
Japan
Prior art keywords
electrode
idt
idt electrode
surface acoustic
acoustic wave
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.)
Expired - Lifetime
Application number
JP2002201850A
Other languages
English (en)
Japanese (ja)
Other versions
JP2003092527A5 (https=
JP2003092527A (ja
Inventor
弘幸 中村
和紀 西村
昭雄 常川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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 Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP2002201850A priority Critical patent/JP3638270B2/ja
Publication of JP2003092527A publication Critical patent/JP2003092527A/ja
Publication of JP2003092527A5 publication Critical patent/JP2003092527A5/ja
Application granted granted Critical
Publication of JP3638270B2 publication Critical patent/JP3638270B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
    • H03H9/14582—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers having a different pitch

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP2002201850A 2001-07-13 2002-07-10 弾性表面波フィルタ及びそれを用いた通信機器 Expired - Lifetime JP3638270B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002201850A JP3638270B2 (ja) 2001-07-13 2002-07-10 弾性表面波フィルタ及びそれを用いた通信機器

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-214316 2001-07-13
JP2001214316 2001-07-13
JP2002201850A JP3638270B2 (ja) 2001-07-13 2002-07-10 弾性表面波フィルタ及びそれを用いた通信機器

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2004249112A Division JP4047311B2 (ja) 2001-07-13 2004-08-27 弾性表面波フィルタ
JP2004249120A Division JP4047313B2 (ja) 2001-07-13 2004-08-27 弾性表面波フィルタ

Publications (3)

Publication Number Publication Date
JP2003092527A JP2003092527A (ja) 2003-03-28
JP2003092527A5 JP2003092527A5 (https=) 2005-04-07
JP3638270B2 true JP3638270B2 (ja) 2005-04-13

Family

ID=26618729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002201850A Expired - Lifetime JP3638270B2 (ja) 2001-07-13 2002-07-10 弾性表面波フィルタ及びそれを用いた通信機器

Country Status (1)

Country Link
JP (1) JP3638270B2 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7439827B2 (en) 2006-01-20 2008-10-21 Murata Manufacturing Co., Ltd. Surface acoustic wave filter device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7760048B2 (en) 2004-04-19 2010-07-20 Murata Manufacturing Co., Ltd. Elastic wave filter and communication device equipped with the elastic wave filter
DE102004037819B4 (de) 2004-08-04 2021-12-16 Snaptrack, Inc. Elektroakustisches Bauelement mit geringen Verlusten
KR100680512B1 (ko) 2004-08-23 2007-02-08 가부시키가이샤 무라타 세이사쿠쇼 밸런스형 탄성 표면파 필터
CN100555857C (zh) 2004-12-24 2009-10-28 株式会社村田制作所 平衡型saw滤波器
JP2008252678A (ja) 2007-03-30 2008-10-16 Tdk Corp 縦結合共振子型弾性表面波フィルタ
KR102687999B1 (ko) * 2021-12-29 2024-07-24 (주)와이팜 Saw 공진기 설계방법, saw 필터 및 그 설계방법, 이를 기록한 컴퓨팅 장치에서 판독 가능한 기록매체
WO2025100314A1 (ja) * 2023-11-09 2025-05-15 株式会社村田製作所 弾性波装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7439827B2 (en) 2006-01-20 2008-10-21 Murata Manufacturing Co., Ltd. Surface acoustic wave filter device

Also Published As

Publication number Publication date
JP2003092527A (ja) 2003-03-28

Similar Documents

Publication Publication Date Title
JP6791403B2 (ja) マルチプレクサ、高周波フロントエンド回路および通信装置
US6674345B2 (en) Surface acoustic wave filter and communication device using the filter
US7378923B2 (en) Balanced SAW filter
US7479855B2 (en) Longitudinally-coupled-resonator-type elastic wave filter device
JP3449352B2 (ja) 弾性表面波フィルタ
US7795999B2 (en) Filter having multiple surface acoustic wave filters connected in parallel
KR100482669B1 (ko) 탄성 표면파 필터 및 통신 장치
JP2003309450A (ja) バンドパスフィルタ及び通信機
EP1037385B1 (en) Surface acoustic wave filter, duplexer, and communications device
JP3826816B2 (ja) 弾性表面波装置
JP3638270B2 (ja) 弾性表面波フィルタ及びそれを用いた通信機器
US6965282B2 (en) Surface acoustic wave device with two split interdigital transducers connected by specified electrode structures
CN100499368C (zh) 平衡型声表面波滤波器
EP1267490A2 (en) Longitudinally-coupled resonator surface-acoustic wave filter and communications apparatus using the same
KR100936896B1 (ko) 밸런스형 탄성 표면파 필터
JP4047313B2 (ja) 弾性表面波フィルタ
JP4047311B2 (ja) 弾性表面波フィルタ
JP2007043252A (ja) 弾性表面波デバイス

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040220

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040317

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20040317

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20040329

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040426

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040629

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040827

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050105

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050107

R150 Certificate of patent or registration of utility model

Ref document number: 3638270

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080121

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090121

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090121

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100121

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110121

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110121

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120121

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130121

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130121

Year of fee payment: 8

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: R3D02

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term