GB2310776B - Spread spectrum communication apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication - Google Patents

Spread spectrum communication apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication

Info

Publication number
GB2310776B
GB2310776B GB9708733A GB9708733A GB2310776B GB 2310776 B GB2310776 B GB 2310776B GB 9708733 A GB9708733 A GB 9708733A GB 9708733 A GB9708733 A GB 9708733A GB 2310776 B GB2310776 B GB 2310776B
Authority
GB
United Kingdom
Prior art keywords
acoustic wave
surface acoustic
spread spectrum
spectrum communication
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
Application number
GB9708733A
Other versions
GB9708733D0 (en
GB2310776A (en
Inventor
Naoki Koga
Masatoshi Ohtsuka
Seishi Tomari
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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.)
Filing date
Publication date
Priority claimed from JP7334564A external-priority patent/JPH09181564A/en
Priority claimed from JP7342787A external-priority patent/JPH0983487A/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority claimed from GB9613209A external-priority patent/GB2303265B/en
Publication of GB9708733D0 publication Critical patent/GB9708733D0/en
Publication of GB2310776A publication Critical patent/GB2310776A/en
Application granted granted Critical
Publication of GB2310776B publication Critical patent/GB2310776B/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 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
GB9708733A 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 Expired - Fee Related GB2310776B (en)

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
GB9708733D0 GB9708733D0 (en) 1997-06-18
GB2310776A GB2310776A (en) 1997-09-03
GB2310776B true GB2310776B (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 (1)

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

Family Applications After (1)

Application Number Title Priority Date Filing Date
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

Country Status (1)

Country Link
GB (3) GB2310774B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029148A (en) * 1978-07-12 1980-03-12 Gen Electric Co Ltd Surface wave devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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
GB2306821B (en) * 1995-11-03 2000-05-31 Advanced Saw Prod Sa Electro-acoustic device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029148A (en) * 1978-07-12 1980-03-12 Gen Electric Co Ltd Surface wave devices

Also Published As

Publication number Publication date
GB9708733D0 (en) 1997-06-18
GB2310774B (en) 1998-07-08
GB9708731D0 (en) 1997-06-18
GB2310775B (en) 1998-07-08
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