GB2310775B - Spread spectrum communicattion apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication - Google Patents
Spread spectrum communicattion apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communicationInfo
- Publication number
- GB2310775B GB2310775B GB9708731A GB9708731A GB2310775B GB 2310775 B GB2310775 B GB 2310775B GB 9708731 A GB9708731 A GB 9708731A GB 9708731 A GB9708731 A GB 9708731A GB 2310775 B GB2310775 B GB 2310775B
- Authority
- GB
- United Kingdom
- Prior art keywords
- acoustic wave
- surface acoustic
- spread spectrum
- communicattion
- demodulator
- 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
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
- H03H9/70—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
-
- 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
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02779—Continuous surface reflective arrays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/70712—Spread spectrum techniques using direct sequence modulation with demodulation by means of convolvers, e.g. of the SAW type
-
- 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
- H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
- H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17314095 | 1995-07-10 | ||
JP7334564A JPH09181564A (en) | 1995-12-22 | 1995-12-22 | Surface acoustic wave element and part and spread spectrum communication equipment using the element and part |
JP7342787A JPH0983487A (en) | 1995-07-10 | 1995-12-28 | Spread spectrum communication equipment. demodulator for spread spectrum communication, surface acoustic wave element and surface acoustic wave component |
GB9613209A GB2303265B (en) | 1995-07-10 | 1996-06-24 | Spread spectrum communication apparatus,and demodulator,surface acoustic wave element and surface acoustic wave parts for spread spectrum communication |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9708731D0 GB9708731D0 (en) | 1997-06-18 |
GB2310775A GB2310775A (en) | 1997-09-03 |
GB2310775B true GB2310775B (en) | 1998-07-08 |
Family
ID=27451468
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9708727A Expired - Fee Related GB2310774B (en) | 1995-07-10 | 1996-06-24 | Spread spectrum communication apparatus, and demodulator, surface wave element and surface acoustic wave parts for spread spectrum communication |
GB9708733A Expired - Fee Related GB2310776B (en) | 1995-07-10 | 1996-06-24 | Spread spectrum communication apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication |
GB9708731A Expired - Fee Related GB2310775B (en) | 1995-07-10 | 1996-06-24 | Spread spectrum communicattion apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9708727A Expired - Fee Related GB2310774B (en) | 1995-07-10 | 1996-06-24 | Spread spectrum communication apparatus, and demodulator, surface wave element and surface acoustic wave parts for spread spectrum communication |
GB9708733A Expired - Fee Related GB2310776B (en) | 1995-07-10 | 1996-06-24 | Spread spectrum communication apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication |
Country Status (1)
Country | Link |
---|---|
GB (3) | GB2310774B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101711204B1 (en) * | 2010-10-29 | 2017-03-13 | 삼성전자주식회사 | Single-input Multi-output Surface Acoustic Wave Device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2306821A (en) * | 1995-11-03 | 1997-05-07 | Advanced Saw Prod Sa | Electro-acoustic devices |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2312881A1 (en) * | 1975-05-29 | 1976-12-24 | Goff Jeannine Le | DIFFERENTIAL DEMODULATORS WITH ELASTIC SURFACE WAVE DEVICES |
GB2029148A (en) * | 1978-07-12 | 1980-03-12 | Gen Electric Co Ltd | Surface wave devices |
-
1996
- 1996-06-24 GB GB9708727A patent/GB2310774B/en not_active Expired - Fee Related
- 1996-06-24 GB GB9708733A patent/GB2310776B/en not_active Expired - Fee Related
- 1996-06-24 GB GB9708731A patent/GB2310775B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2306821A (en) * | 1995-11-03 | 1997-05-07 | Advanced Saw Prod Sa | Electro-acoustic devices |
Also Published As
Publication number | Publication date |
---|---|
GB9708733D0 (en) | 1997-06-18 |
GB2310776B (en) | 1998-07-08 |
GB2310774B (en) | 1998-07-08 |
GB9708731D0 (en) | 1997-06-18 |
GB2310776A (en) | 1997-09-03 |
GB2310774A (en) | 1997-09-03 |
GB2310775A (en) | 1997-09-03 |
GB9708727D0 (en) | 1997-06-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20060624 |