GB1381912A - Acoustic wave devices - Google Patents

Acoustic wave devices

Info

Publication number
GB1381912A
GB1381912A GB1506872A GB1506872A GB1381912A GB 1381912 A GB1381912 A GB 1381912A GB 1506872 A GB1506872 A GB 1506872A GB 1506872 A GB1506872 A GB 1506872A GB 1381912 A GB1381912 A GB 1381912A
Authority
GB
United Kingdom
Prior art keywords
transducer
input
surface wave
coupler
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
Application number
GB1506872A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1506872A priority Critical patent/GB1381912A/en
Priority to AU53333/73A priority patent/AU5333373A/en
Priority to DE19732314642 priority patent/DE2314642A1/en
Publication of GB1381912A publication Critical patent/GB1381912A/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 devices; Electromechanical resonators
    • H03H9/74—Multiple-port networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
    • H03H9/76—Networks using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves

Landscapes

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

Abstract

1381912 Surface wave filters STANDARD TELEPHONES & CABLES Ltd 30 March 1972 15068/72 Heading H3U An acoustic surface wave filter having an input transducer 1, with interdigitated electrodes, and a first output transducer 3, is provided with a linked multi-strip coupler 6 which couples part of the input signal to a second output transducer 4. Transducers 3 and 4 have different pass bands both within the passband of transducer 1, for example they may respectively pass sound and video T.V. signals. Waves emitted by transducer 1 away from coupler 6 are absorbed, or alternatively the transducer is made unidirectional by including additional couplers. The propagating medium is piezoelectric material, which may be supported by a non-piezo-electric material. In a second embodiment, Fig. 3 (not shown), the input transducer emits waves in both directions and further couplers are provided to separate out more than two passbands.
GB1506872A 1972-03-30 1972-03-30 Acoustic wave devices Expired GB1381912A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1506872A GB1381912A (en) 1972-03-30 1972-03-30 Acoustic wave devices
AU53333/73A AU5333373A (en) 1972-03-30 1973-03-15 Improvements in or relating to acoustic wave devices
DE19732314642 DE2314642A1 (en) 1972-03-30 1973-03-23 FILTER FOR ACOUSTIC WAVES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1506872A GB1381912A (en) 1972-03-30 1972-03-30 Acoustic wave devices

Publications (1)

Publication Number Publication Date
GB1381912A true GB1381912A (en) 1975-01-29

Family

ID=10052474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1506872A Expired GB1381912A (en) 1972-03-30 1972-03-30 Acoustic wave devices

Country Status (3)

Country Link
AU (1) AU5333373A (en)
DE (1) DE2314642A1 (en)
GB (1) GB1381912A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002091A1 (en) * 1979-03-21 1980-10-02 Inst Radiotekh Elektron Filter based on the use of surface acoustic waves
US4504759A (en) * 1982-12-22 1985-03-12 U.S. Philips Corporation SAW Device with special length-weighted interdigital electrode array
US4564858A (en) * 1981-03-31 1986-01-14 Harris Corporation Television SAW/VSB filter incorporating receiver equalizer
GB2175477A (en) * 1984-05-14 1986-11-26 Gold Stars Instr & Electric Co Elastic surface wave device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU945951A1 (en) * 1979-03-21 1982-07-23 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Filter on surface acoustic waves
FR2454223B1 (en) * 1979-04-10 1986-11-28 Telediffusion Fse SURFACE ELASTIC WAVE DEVICE FOR INTERFERENCE OR INTERFERENCE CIRCUIT FOR TELEVISION BROADCASTS
JPS58200618A (en) * 1982-05-19 1983-11-22 Hitachi Ltd Surface acoustic wave device
DE4212517C2 (en) * 1992-04-14 1995-02-23 Siemens Ag Surface wave arrangement with at least two surface wave structures adjacent in the direction of the main wave propagation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002091A1 (en) * 1979-03-21 1980-10-02 Inst Radiotekh Elektron Filter based on the use of surface acoustic waves
US4564858A (en) * 1981-03-31 1986-01-14 Harris Corporation Television SAW/VSB filter incorporating receiver equalizer
US4504759A (en) * 1982-12-22 1985-03-12 U.S. Philips Corporation SAW Device with special length-weighted interdigital electrode array
GB2175477A (en) * 1984-05-14 1986-11-26 Gold Stars Instr & Electric Co Elastic surface wave device
GB2175477B (en) * 1984-05-14 1990-01-17 Gold Star Instr & Electrics Acoustic surface wave device

Also Published As

Publication number Publication date
AU5333373A (en) 1974-09-19
DE2314642A1 (en) 1973-10-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee