FR2091958A1 - - Google Patents
Info
- Publication number
- FR2091958A1 FR2091958A1 FR7103938A FR7103938A FR2091958A1 FR 2091958 A1 FR2091958 A1 FR 2091958A1 FR 7103938 A FR7103938 A FR 7103938A FR 7103938 A FR7103938 A FR 7103938A FR 2091958 A1 FR2091958 A1 FR 2091958A1
- Authority
- FR
- France
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
- H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB551770 | 1970-02-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2091958A1 true FR2091958A1 (fr) | 1972-01-21 |
FR2091958B1 FR2091958B1 (fr) | 1975-01-17 |
Family
ID=9797699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7103938A Expired FR2091958B1 (fr) | 1970-02-05 | 1971-02-05 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3761822A (fr) |
JP (1) | JPS5233442B1 (fr) |
DE (1) | DE2104770C3 (fr) |
DK (1) | DK131069B (fr) |
FR (1) | FR2091958B1 (fr) |
GB (1) | GB1341192A (fr) |
NL (1) | NL7101324A (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5543085U (fr) * | 1978-09-16 | 1980-03-19 | ||
DE2951119A1 (de) * | 1979-12-19 | 1981-06-25 | Robert Bosch Gmbh, 7000 Stuttgart | Sprach- und datenuebertragungssystem |
US4549311A (en) * | 1982-08-03 | 1985-10-22 | Motorola, Inc. | Method and apparatus for measuring the strength of a radio signal frequency |
US4485486A (en) * | 1982-08-03 | 1984-11-27 | Motorola, Inc. | Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radio telephones in a cellular radiotelephone communications system |
JPS60150373U (ja) * | 1984-03-16 | 1985-10-05 | 杉田 健一 | 流体切換弁 |
US4633463A (en) * | 1984-03-28 | 1986-12-30 | Canadian Marconi Corporation | Radio communication system |
US4611334A (en) * | 1984-08-31 | 1986-09-09 | Motorola, Inc. | Message capturing radio data system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1116771A (en) * | 1965-01-27 | 1968-06-12 | Mini Of Technology | Apparatus for use in radio-frequency communications systems |
FR1544192A (fr) * | 1967-09-21 | 1968-10-31 | Csf | Nouveau système de réception en diversité |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3403341A (en) * | 1965-09-13 | 1968-09-24 | Rucker Co | Communication system with autoamtic channel selection |
FR1508349A (fr) * | 1966-11-24 | 1968-01-05 | Lannionaise D Electronique Soc | Dispositif automatique de commutation d'antenne |
US3495175A (en) * | 1967-07-19 | 1970-02-10 | Moore Associates Inc | Automatic channel selection system for a multichannel communication system |
-
1971
- 1971-02-02 US US00112108A patent/US3761822A/en not_active Expired - Lifetime
- 1971-02-02 DK DK45371AA patent/DK131069B/da not_active IP Right Cessation
- 1971-02-02 NL NL7101324A patent/NL7101324A/xx unknown
- 1971-02-02 DE DE2104770A patent/DE2104770C3/de not_active Expired
- 1971-02-05 JP JP46004496A patent/JPS5233442B1/ja active Pending
- 1971-02-05 FR FR7103938A patent/FR2091958B1/fr not_active Expired
- 1971-04-19 GB GB551770A patent/GB1341192A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1116771A (en) * | 1965-01-27 | 1968-06-12 | Mini Of Technology | Apparatus for use in radio-frequency communications systems |
FR1544192A (fr) * | 1967-09-21 | 1968-10-31 | Csf | Nouveau système de réception en diversité |
Non-Patent Citations (3)
Title |
---|
BR(UIT DU SIGNALA RADIOFREQUENCE CAPTE PAR LA STATION,ET D'AUTRE PART UN EMETTEUR POUR TRANSMETTRE A UNCENTRAL LE SIGNAL A AUDIOFREQUENCE ET LE SIGNAL DE QUALITE.LE CENTRAL COMPORTE UN DISPOSITIFDEVANT SELECTIONNER LE MEILLEUR SIGNAL DE QUALITE ET UN COMMUTATEUR DE SELECTION.LESFREQUENCES DE PORTEUSE DES SIGNAUX DE QUALITE SE SITUENT EN DEHORS DE LA BANDE DES SIGNAUX AAUDIOFREQUENCE.CHAQUE EMETTEUR COMPORTE UN DISPOSITIF DE COMBINAISON POUR TRANSMETTRE AUCENTRAL UN SIGNAL COMBINE FORME PAR LE SIGNAL DE QUALITE ET LE SIGNAL A AUDIOFREQUENCE.LECENTRAL COMPORTE UN COMMUTATEUR D'EXPLORATION,UN PREMIER FILTRE QUI EST EXCITE PAR LE SIGNAL) * |
DE(PORTEUSE MODULEE,LA MODULATION DE CE SIGNAL ETANT FONCTION DU RAPPORT SIGNAL) * |
DE(QUALITE,UN CIRCUIT D'ECHANTILLONNAGE ET DE MAINTIEN ET UN DEUXIEME FILTRE QUI EST EXCITEPAR LES SIGNAUX A AUDIOFREQUENCE.LE SIGNAL DE QUALITE EST CONVERTI EN UN NIVEAU DE TENSIONCONTINUE.LE CIRCUIT D'ECHANTILLONN * |
Also Published As
Publication number | Publication date |
---|---|
DK131069B (da) | 1975-05-20 |
FR2091958B1 (fr) | 1975-01-17 |
DK131069C (fr) | 1975-10-27 |
DE2104770A1 (de) | 1971-08-12 |
DE2104770C3 (de) | 1980-08-21 |
JPS5233442B1 (fr) | 1977-08-29 |
DE2104770B2 (de) | 1979-12-13 |
GB1341192A (en) | 1973-12-19 |
US3761822A (en) | 1973-09-25 |
NL7101324A (fr) | 1971-08-09 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |