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GB2249681B - Surface acoustic wave device - Google Patents

Surface acoustic wave device

Info

Publication number
GB2249681B
GB2249681B GB9024346A GB9024346A GB2249681B GB 2249681 B GB2249681 B GB 2249681B GB 9024346 A GB9024346 A GB 9024346A GB 9024346 A GB9024346 A GB 9024346A GB 2249681 B GB2249681 B GB 2249681B
Authority
GB
United Kingdom
Prior art keywords
acoustic wave
surface acoustic
wave device
wave
acoustic
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 - Fee Related
Application number
GB9024346A
Other versions
GB9024346D0 (en
GB2249681A (en
Inventor
David Errol Bower
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
STC PLC
Alcatel Submarine Networks UK Ltd
Nortel Networks Optical Components Ltd
Original Assignee
Northern Telecom Ltd
STC PLC
Northern Telecom Europe Ltd
STC Submarine Systems Ltd
STC 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, STC PLC, Northern Telecom Europe Ltd, STC Submarine Systems Ltd, STC Ltd filed Critical Northern Telecom Ltd
Priority to GB9024346A priority Critical patent/GB2249681B/en
Publication of GB9024346D0 publication Critical patent/GB9024346D0/en
Publication of GB2249681A publication Critical patent/GB2249681A/en
Application granted granted Critical
Publication of GB2249681B publication Critical patent/GB2249681B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
GB9024346A 1990-11-08 1990-11-08 Surface acoustic wave device Expired - Fee Related GB2249681B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9024346A GB2249681B (en) 1990-11-08 1990-11-08 Surface acoustic wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9024346A GB2249681B (en) 1990-11-08 1990-11-08 Surface acoustic wave device

Publications (3)

Publication Number Publication Date
GB9024346D0 GB9024346D0 (en) 1990-12-19
GB2249681A GB2249681A (en) 1992-05-13
GB2249681B true GB2249681B (en) 1994-06-01

Family

ID=10685094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9024346A Expired - Fee Related GB2249681B (en) 1990-11-08 1990-11-08 Surface acoustic wave device

Country Status (1)

Country Link
GB (1) GB2249681B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060777A (en) * 1976-05-19 1977-11-29 Piezo Technology Inc. Guided elastic surface wave filter
GB1587796A (en) * 1977-05-23 1981-04-08 Raytheon Co Surface wave device having reflecting means
GB2078042A (en) * 1980-06-13 1981-12-23 Nippon Telegraph & Telephone Surface acoustic wave resonator
US4309679A (en) * 1978-12-04 1982-01-05 Matsushita Electric Industrial Company, Limited Surface acoustic wave filter
GB2117992A (en) * 1982-03-24 1983-10-19 Philips Electronic Associated Parallel-series acoustic wave device arrangement
GB2123636A (en) * 1982-07-05 1984-02-01 Philips Electronic Associated Acoustic surface wave device including a reflective multistrip coupler
GB2160379A (en) * 1984-06-15 1985-12-18 Philips Electronic Associated Surface-propagating acoustic wave device
GB2162396A (en) * 1984-07-25 1986-01-29 Philips Electronic Associated Surface-propagating acoustic wave device
US4622525A (en) * 1985-07-19 1986-11-11 Sawtek, Inc. Low loss surface acoustic wave device and method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060777A (en) * 1976-05-19 1977-11-29 Piezo Technology Inc. Guided elastic surface wave filter
GB1587796A (en) * 1977-05-23 1981-04-08 Raytheon Co Surface wave device having reflecting means
US4309679A (en) * 1978-12-04 1982-01-05 Matsushita Electric Industrial Company, Limited Surface acoustic wave filter
GB2078042A (en) * 1980-06-13 1981-12-23 Nippon Telegraph & Telephone Surface acoustic wave resonator
GB2117992A (en) * 1982-03-24 1983-10-19 Philips Electronic Associated Parallel-series acoustic wave device arrangement
GB2123636A (en) * 1982-07-05 1984-02-01 Philips Electronic Associated Acoustic surface wave device including a reflective multistrip coupler
GB2160379A (en) * 1984-06-15 1985-12-18 Philips Electronic Associated Surface-propagating acoustic wave device
GB2162396A (en) * 1984-07-25 1986-01-29 Philips Electronic Associated Surface-propagating acoustic wave device
US4622525A (en) * 1985-07-19 1986-11-11 Sawtek, Inc. Low loss surface acoustic wave device and method

Also Published As

Publication number Publication date
GB9024346D0 (en) 1990-12-19
GB2249681A (en) 1992-05-13

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20031108