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GB2060305B - Acoustic wave device including a reflective array - Google Patents

Acoustic wave device including a reflective array

Info

Publication number
GB2060305B
GB2060305B GB8029096A GB8029096A GB2060305B GB 2060305 B GB2060305 B GB 2060305B GB 8029096 A GB8029096 A GB 8029096A GB 8029096 A GB8029096 A GB 8029096A GB 2060305 B GB2060305 B GB 2060305B
Authority
GB
United Kingdom
Prior art keywords
device including
acoustic wave
wave device
reflective array
reflective
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
Application number
GB8029096A
Other versions
GB2060305A (en
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.)
SECR DEFENCE
UK Secretary of State for Defence
Original Assignee
SECR DEFENCE
UK Secretary of State for Defence
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 SECR DEFENCE, UK Secretary of State for Defence filed Critical SECR DEFENCE
Priority to GB8029096A priority Critical patent/GB2060305B/en
Publication of GB2060305A publication Critical patent/GB2060305A/en
Application granted granted Critical
Publication of GB2060305B publication Critical patent/GB2060305B/en
Expired 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 elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/643—Means for obtaining a particular transfer characteristic the transfer characteristic being determined by reflective or coupling array characteristics
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/36—Devices for manipulating acoustic surface waves
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02645—Waffle-iron or dot arrays
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6406—Filters characterised by a particular frequency characteristic

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Aerials With Secondary Devices (AREA)
GB8029096A 1979-09-20 1980-09-09 Acoustic wave device including a reflective array Expired GB2060305B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8029096A GB2060305B (en) 1979-09-20 1980-09-09 Acoustic wave device including a reflective array

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7932716 1979-09-20
GB8029096A GB2060305B (en) 1979-09-20 1980-09-09 Acoustic wave device including a reflective array

Publications (2)

Publication Number Publication Date
GB2060305A GB2060305A (en) 1981-04-29
GB2060305B true GB2060305B (en) 1983-05-25

Family

ID=26272960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8029096A Expired GB2060305B (en) 1979-09-20 1980-09-09 Acoustic wave device including a reflective array

Country Status (1)

Country Link
GB (1) GB2060305B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128436B (en) * 1982-09-17 1986-07-09 Marconi Co Ltd A bragg cell
DE3314725A1 (en) * 1983-04-22 1984-10-25 Siemens AG, 1000 Berlin und 8000 München SURFACE WAVE RESONATOR FILTER
GB2193060B (en) * 1986-07-16 1991-04-03 Japan Radio Co Ltd Surface elastic wave filter
DE3731309A1 (en) * 1987-09-17 1989-03-30 Siemens Ag SURFACE SHAFT ARRANGEMENT WITH CONVERSION STRUCTURE TO AVOID UNWANTED REFLECTED SHAFTS

Also Published As

Publication number Publication date
GB2060305A (en) 1981-04-29

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940909