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GB2151867B - Magnetic feedthrough cancelling surface acoustic wave device - Google Patents

Magnetic feedthrough cancelling surface acoustic wave device

Info

Publication number
GB2151867B
GB2151867B GB08426755A GB8426755A GB2151867B GB 2151867 B GB2151867 B GB 2151867B GB 08426755 A GB08426755 A GB 08426755A GB 8426755 A GB8426755 A GB 8426755A GB 2151867 B GB2151867 B GB 2151867B
Authority
GB
United Kingdom
Prior art keywords
acoustic wave
surface acoustic
wave device
magnetic feedthrough
cancelling
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
GB08426755A
Other versions
GB2151867A (en
GB8426755D0 (en
Inventor
Grantley Oliver Este
Mark Spencer Suthers
Richard William Streater
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of GB8426755D0 publication Critical patent/GB8426755D0/en
Publication of GB2151867A publication Critical patent/GB2151867A/en
Application granted granted Critical
Publication of GB2151867B publication Critical patent/GB2151867B/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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • 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
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
GB08426755A 1983-12-22 1984-10-23 Magnetic feedthrough cancelling surface acoustic wave device Expired GB2151867B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000444001A CA1202384A (en) 1983-12-22 1983-12-22 Magnetic feedthrough cancelling surface acoustic wave device

Publications (3)

Publication Number Publication Date
GB8426755D0 GB8426755D0 (en) 1984-11-28
GB2151867A GB2151867A (en) 1985-07-24
GB2151867B true GB2151867B (en) 1987-10-07

Family

ID=4126802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08426755A Expired GB2151867B (en) 1983-12-22 1984-10-23 Magnetic feedthrough cancelling surface acoustic wave device

Country Status (4)

Country Link
JP (1) JPS60157315A (en)
CA (1) CA1202384A (en)
DE (1) DE3442778A1 (en)
GB (1) GB2151867B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550045A (en) * 1969-06-25 1970-12-22 Zenith Radio Corp Acoustic surface wave filter devices
US3680007A (en) * 1970-09-30 1972-07-25 Ibm Surface wave transducer for digital signals
DE2132985C3 (en) * 1971-07-02 1981-06-04 Siemens AG, 1000 Berlin und 8000 München Piezoelectric filter based on the surface wave principle
FR2167405B1 (en) * 1972-01-14 1976-06-11 Thomson Csf
US3872410A (en) * 1972-12-04 1975-03-18 Gte Laboratories Inc Surface wave filter for tv if stage
GB1486373A (en) * 1975-01-09 1977-09-21 Standard Telephones Cables Ltd Surface acoustic wave devices
JPS56128011A (en) * 1980-03-11 1981-10-07 Nec Corp Surface elastic wave filter

Also Published As

Publication number Publication date
DE3442778C2 (en) 1989-06-15
CA1202384A (en) 1986-03-25
GB2151867A (en) 1985-07-24
DE3442778A1 (en) 1985-07-04
GB8426755D0 (en) 1984-11-28
JPS60157315A (en) 1985-08-17

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20041022