JPS5219044A - Surface acoustic wave filter - Google Patents

Surface acoustic wave filter

Info

Publication number
JPS5219044A
JPS5219044A JP9518475A JP9518475A JPS5219044A JP S5219044 A JPS5219044 A JP S5219044A JP 9518475 A JP9518475 A JP 9518475A JP 9518475 A JP9518475 A JP 9518475A JP S5219044 A JPS5219044 A JP S5219044A
Authority
JP
Japan
Prior art keywords
acoustic wave
surface acoustic
wave filter
band
ripples
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.)
Granted
Application number
JP9518475A
Other languages
Japanese (ja)
Other versions
JPS5619765B2 (en
Inventor
Hiromichi Jumonji
Junichiro Minowa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9518475A priority Critical patent/JPS5219044A/en
Publication of JPS5219044A publication Critical patent/JPS5219044A/en
Publication of JPS5619765B2 publication Critical patent/JPS5619765B2/ja
Granted legal-status Critical Current

Links

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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6483—Ladder SAW filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects

Landscapes

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

Abstract

PURPOSE:In a surface acoustic wave filter made to have narrow-band pass filter characteristics using a surface acoustic wave resonator, generation of ripples in the pass bend and of large side lobes in blocking band is prevented.
JP9518475A 1975-08-04 1975-08-04 Surface acoustic wave filter Granted JPS5219044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9518475A JPS5219044A (en) 1975-08-04 1975-08-04 Surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9518475A JPS5219044A (en) 1975-08-04 1975-08-04 Surface acoustic wave filter

Publications (2)

Publication Number Publication Date
JPS5219044A true JPS5219044A (en) 1977-01-14
JPS5619765B2 JPS5619765B2 (en) 1981-05-09

Family

ID=14130655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9518475A Granted JPS5219044A (en) 1975-08-04 1975-08-04 Surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS5219044A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05183380A (en) * 1991-10-28 1993-07-23 Fujitsu Ltd Surface acoustic wave filter
JPH0613837A (en) * 1992-06-29 1994-01-21 Fujitsu Ltd Surface acoustic wave element
US5506552A (en) * 1993-11-05 1996-04-09 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with multiple ground terminals
US5589806A (en) * 1994-01-12 1996-12-31 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter having parallel/serial resonator connection based on transmitting and receiving frequencies
US5592135A (en) * 1994-01-20 1997-01-07 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with different filter portions satisfying complex conjugate relationship of impedances
US5610566A (en) * 1993-08-04 1997-03-11 Advanced Saw Products Sa Saw filter with a coupled saw impedance element
US5694095A (en) * 1994-04-26 1997-12-02 Fujitsu Limited Surface acoustic wave resonance device adapted to simple and precise adjustment of resonant frequency
US5721519A (en) * 1994-08-23 1998-02-24 Matsushita Electric Industrial Co., Ltd. Balanced type surface acoustic wave device
US5770985A (en) * 1993-07-08 1998-06-23 Murata Manufacturing Co., Ltd. Surface acoustic wave filter
US5847626A (en) * 1994-02-22 1998-12-08 Matsushita Electric Industrial Co., Ltd. Balanced-type surface acoustic wave lattice filter
US5894251A (en) * 1996-06-14 1999-04-13 Matsushita Electric Industrial Co., Ltd. High frequency filter having saw and dielectric filters with different frequency temperature characteristic signs
US5936488A (en) * 1996-01-26 1999-08-10 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter having input and output transducers with different aperture lengths
US5955933A (en) * 1994-11-10 1999-09-21 Fujitsu Limited Saw resonator with improved connections
US6107899A (en) * 1996-10-21 2000-08-22 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with grounds not connected in the package or on the piezoelectric substrate
US6885262B2 (en) 2002-11-05 2005-04-26 Ube Industries, Ltd. Band-pass filter using film bulk acoustic resonator
USRE40036E1 (en) 1991-10-28 2008-01-29 Fujitsu Limited Surface acoustic wave filter
DE19923963B4 (en) * 1998-05-26 2008-09-18 Murata Mfg. Co., Ltd., Nagaokakyo Surface acoustic wave filter

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE40036E1 (en) 1991-10-28 2008-01-29 Fujitsu Limited Surface acoustic wave filter
US5559481A (en) * 1991-10-28 1996-09-24 Fujitsu Limited Surface acoustic wave filter
USRE37790E1 (en) 1991-10-28 2002-07-16 Fujitsu Limited Surface acoustic wave filter
JPH05183380A (en) * 1991-10-28 1993-07-23 Fujitsu Ltd Surface acoustic wave filter
US5631612A (en) * 1991-10-28 1997-05-20 Fujitsu Limited Surface acoustic wave filter
USRE37375E1 (en) * 1991-10-28 2001-09-18 Fujitsu Limited Surface acoustic wave filter
JPH0613837A (en) * 1992-06-29 1994-01-21 Fujitsu Ltd Surface acoustic wave element
JP3226333B2 (en) * 1992-06-29 2001-11-05 富士通株式会社 Surface acoustic wave device
US5770985A (en) * 1993-07-08 1998-06-23 Murata Manufacturing Co., Ltd. Surface acoustic wave filter
US5610566A (en) * 1993-08-04 1997-03-11 Advanced Saw Products Sa Saw filter with a coupled saw impedance element
US5506552A (en) * 1993-11-05 1996-04-09 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with multiple ground terminals
US5589806A (en) * 1994-01-12 1996-12-31 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter having parallel/serial resonator connection based on transmitting and receiving frequencies
US5592135A (en) * 1994-01-20 1997-01-07 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with different filter portions satisfying complex conjugate relationship of impedances
US5847626A (en) * 1994-02-22 1998-12-08 Matsushita Electric Industrial Co., Ltd. Balanced-type surface acoustic wave lattice filter
US5694095A (en) * 1994-04-26 1997-12-02 Fujitsu Limited Surface acoustic wave resonance device adapted to simple and precise adjustment of resonant frequency
US5892418A (en) * 1994-08-23 1999-04-06 Matsushita Electric Industrial Co., Ltd. Balanced type surface acoustic wave device
US5721519A (en) * 1994-08-23 1998-02-24 Matsushita Electric Industrial Co., Ltd. Balanced type surface acoustic wave device
US5955933A (en) * 1994-11-10 1999-09-21 Fujitsu Limited Saw resonator with improved connections
US6242991B1 (en) 1994-11-10 2001-06-05 Fujitsu Limited Surface acoustic wave filter having a continuous electrode for connection of multiple bond wires
US5936488A (en) * 1996-01-26 1999-08-10 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter having input and output transducers with different aperture lengths
US5894251A (en) * 1996-06-14 1999-04-13 Matsushita Electric Industrial Co., Ltd. High frequency filter having saw and dielectric filters with different frequency temperature characteristic signs
US6107899A (en) * 1996-10-21 2000-08-22 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with grounds not connected in the package or on the piezoelectric substrate
DE19923963B4 (en) * 1998-05-26 2008-09-18 Murata Mfg. Co., Ltd., Nagaokakyo Surface acoustic wave filter
US6885262B2 (en) 2002-11-05 2005-04-26 Ube Industries, Ltd. Band-pass filter using film bulk acoustic resonator

Also Published As

Publication number Publication date
JPS5619765B2 (en) 1981-05-09

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