GB1389610A – Surfacewave devices
– Google Patents
GB1389610A – Surfacewave devices
– Google Patents
Surfacewave devices
Info
Publication number
GB1389610A
GB1389610A
GB4675272A
GB4675272A
GB1389610A
GB 1389610 A
GB1389610 A
GB 1389610A
GB 4675272 A
GB4675272 A
GB 4675272A
GB 4675272 A
GB4675272 A
GB 4675272A
GB 1389610 A
GB1389610 A
GB 1389610A
Authority
GB
United Kingdom
Prior art keywords
enclosure
transducers
cover
connection
surface wave
Prior art date
1972-10-11
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
GB4675272A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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.)
1972-10-11
Filing date
1972-10-11
Publication date
1975-04-03
1972-10-11
Application filed by Marconi Co Ltd
filed
Critical
Marconi Co Ltd
1972-10-11
Priority to GB4675272A
priority
Critical
patent/GB1389610A/en
1975-04-03
Publication of GB1389610A
publication
Critical
patent/GB1389610A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H03H9/05—Holders; Supports
H03H9/10—Mounting in enclosures
H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
H03H9/1092—Mounting in enclosures for surface acoustic wave [SAW] devices the enclosure being defined by a cover cap mounted on an element forming part of the surface acoustic wave [SAW] device on the side of the IDT’s
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
H03H9/02818—Means for compensation or elimination of undesirable effects
H03H9/02834—Means for compensation or elimination of undesirable effects of temperature influence
Abstract
1389610 Acoustic surface wave devices MARCONI CO Ltd 31 Aug 1973 [11 Oct 1972] 46752/72 Heading H3U An acoustic surface wave device, e.g. a delay line or a frequency or pulse compression filter, comprises a body 10 of piezoeleetrio material with transducers on its surface 18, the body forming one wall of a gas-tight enclosure around the transducers. As shown the transducers are of comb form with bus-bars 20, 21 extending outside the enclosure for connection, and the enclosure is evacuated or filled with an inert gas. The enclosure side walls 14 are of epoxy resin or polyethylene and cover 12 is of the same material as the body 10, e.g. quartz, to minimize thermal expansion problems. The inner surface 16 of the cover has a conductive coating to confine the magnetic field and reduce crosstalk. The cover overhangs the walls 14 (Fig. 3, not shown) so that connection may be made to the coating.
GB4675272A
1972-10-11
1972-10-11
Surfacewave devices
Expired
GB1389610A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB4675272A
GB1389610A
(en)
1972-10-11
1972-10-11
Surfacewave devices
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB4675272A
GB1389610A
(en)
1972-10-11
1972-10-11
Surfacewave devices
Publications (1)
Publication Number
Publication Date
GB1389610A
true
GB1389610A
(en)
1975-04-03
Family
ID=10442456
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4675272A
Expired
GB1389610A
(en)
1972-10-11
1972-10-11
Surfacewave devices
Country Status (1)
Country
Link
GB
(1)
GB1389610A
(en)
Cited By (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4047129A
(en)
*
1975-03-13
1977-09-06
Murata Manufacturing Co., Ltd.
Elastic surface wave filter
US4090153A
(en)
*
1976-06-07
1978-05-16
Rca Corporation
Surface acoustic wave absorber
FR2437110A1
(en)
*
1978-09-25
1980-04-18
United Technologies Corp
DEVICE FOR VACUUM CAPSULE SURFACE ACOUSTIC WAVE AND MANUFACTURING METHOD
FR2444936A1
(en)
*
1978-12-22
1980-07-18
United Technologies Corp
SURFACE SOUND WAVE PRESSURE SENSOR STRUCTURE
US4270105A
(en)
*
1979-05-14
1981-05-26
Raytheon Company
Stabilized surface wave device
US4699682A
(en)
*
1985-10-23
1987-10-13
Clarion Co., Ltd.
Surface acoustic wave device sealing method
EP0449473A2
(en)
*
1990-03-26
1991-10-02
AT&T Corp.
Method for hermetically sealing electronic devices
EP0805552A2
(en)
*
1996-04-29
1997-11-05
Motorola, Inc.
Acoustic wave filter package and method
1972
1972-10-11
GB
GB4675272A
patent/GB1389610A/en
not_active
Expired
Cited By (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4047129A
(en)
*
1975-03-13
1977-09-06
Murata Manufacturing Co., Ltd.
Elastic surface wave filter
US4090153A
(en)
*
1976-06-07
1978-05-16
Rca Corporation
Surface acoustic wave absorber
FR2437110A1
(en)
*
1978-09-25
1980-04-18
United Technologies Corp
DEVICE FOR VACUUM CAPSULE SURFACE ACOUSTIC WAVE AND MANUFACTURING METHOD
US4213104A
(en)
*
1978-09-25
1980-07-15
United Technologies Corporation
Vacuum encapsulation for surface acoustic wave (SAW) devices
FR2444936A1
(en)
*
1978-12-22
1980-07-18
United Technologies Corp
SURFACE SOUND WAVE PRESSURE SENSOR STRUCTURE
US4270105A
(en)
*
1979-05-14
1981-05-26
Raytheon Company
Stabilized surface wave device
US4699682A
(en)
*
1985-10-23
1987-10-13
Clarion Co., Ltd.
Surface acoustic wave device sealing method
EP0449473A2
(en)
*
1990-03-26
1991-10-02
AT&T Corp.
Method for hermetically sealing electronic devices
EP0449473A3
(en)
*
1990-03-26
1992-03-04
American Telephone And Telegraph Company
Method for hermetically sealing electronic devices
EP0805552A2
(en)
*
1996-04-29
1997-11-05
Motorola, Inc.
Acoustic wave filter package and method
US5729185A
(en)
*
1996-04-29
1998-03-17
Motorola Inc.
Acoustic wave filter package lid attachment apparatus and method utilizing a novolac epoxy based seal
EP0805552A3
(en)
*
1996-04-29
1998-07-08
Motorola, Inc.
Acoustic wave filter package and method
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Legal Events
Date
Code
Title
Description
1975-08-13
PS
Patent sealed
1983-03-30
PCNP
Patent ceased through non-payment of renewal fee
