TW263630B - Surface wave resonator - Google Patents

Surface wave resonator

Info

Publication number
TW263630B
TW263630B TW084103661A TW84103661A TW263630B TW 263630 B TW263630 B TW 263630B TW 084103661 A TW084103661 A TW 084103661A TW 84103661 A TW84103661 A TW 84103661A TW 263630 B TW263630 B TW 263630B
Authority
TW
Taiwan
Prior art keywords
lambda
surface wave
wave resonator
distance
excited
Prior art date
Application number
TW084103661A
Other languages
Chinese (zh)
Inventor
Michio Kadoda
Kazuhiko Morokado
Original Assignee
Murata Manufacturing Co
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 Murata Manufacturing Co filed Critical Murata Manufacturing Co
Application granted granted Critical
Publication of TW263630B publication Critical patent/TW263630B/en

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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02669—Edge reflection structures, i.e. resonating structures without metallic reflectors, e.g. Bleustein-Gulyaev-Shimizu [BGS], shear horizontal [SH], shear transverse [ST], Love waves devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02653—Grooves or arrays buried in the substrate

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

There is provided an end face reflection type surface wave resonator utilizing HS type surface waves capable of providing a plurality of resonance characteristics using a single element. The surface wave resonator is a type in which surface waves are reflected between two opposite end faces of a piezoelectric substrate and has IDT's that constitute first and second resonant units. The distance L between the two end faces is in a range expressed by ((lambda)1/2) X N1 ((lambda)1/20) (N1 is an integral number) where (lambda)1 represents the wavelength of a surfacewave excited by the first resonant unit. The distance L is chosen to be out of a range expressed by ((lambda)2/2) X N2 ((lambda)1/20) (N2 is an integral number) where (lambda)2 represents the wavelengthof a surface wave excited by the second resonant unit.
TW084103661A 1994-05-30 1995-04-14 Surface wave resonator TW263630B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11697594A JP3196499B2 (en) 1994-05-30 1994-05-30 Surface wave resonator

Publications (1)

Publication Number Publication Date
TW263630B true TW263630B (en) 1995-11-21

Family

ID=14700395

Family Applications (1)

Application Number Title Priority Date Filing Date
TW084103661A TW263630B (en) 1994-05-30 1995-04-14 Surface wave resonator

Country Status (4)

Country Link
JP (1) JP3196499B2 (en)
KR (1) KR0180292B1 (en)
CN (1) CN1075908C (en)
TW (1) TW263630B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3233087B2 (en) * 1997-01-20 2001-11-26 株式会社村田製作所 Surface acoustic wave filter
JP3298538B2 (en) * 1999-02-16 2002-07-02 株式会社村田製作所 Edge reflection vertical coupling type SAW resonator filter
JP3744479B2 (en) * 2001-09-28 2006-02-08 株式会社村田製作所 Surface wave device and communication device
DE102008016613B4 (en) 2008-04-01 2010-04-15 Epcos Ag Method for producing an electrical component having at least one dielectric layer and an electrical component having at least one dielectric layer
CN105490662B (en) * 2015-11-27 2018-07-31 北京时代民芯科技有限公司 A kind of SAW filter and its manufacturing method
CN109303370A (en) * 2017-07-26 2019-02-05 株式会社泰已科 Simple protective cap
EP3830956A2 (en) 2018-07-27 2021-06-09 Frec|N|Sys Resonant cavity surface acoustic wave (saw) filters

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000409A (en) * 1977-04-07 1979-01-04 Philips Electronic Associated Resonators employing surface skimming bulk waves
JPS61100014A (en) * 1984-10-23 1986-05-19 Fujitsu Ltd Surface acoustic wave device

Also Published As

Publication number Publication date
CN1075908C (en) 2001-12-05
JP3196499B2 (en) 2001-08-06
CN1115913A (en) 1996-01-31
JPH07321598A (en) 1995-12-08
KR0180292B1 (en) 1999-04-01
KR950035059A (en) 1995-12-30

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