FR71464E - Circuits de réception radio en diversité pour ondes ultra courtes - Google Patents
Circuits de réception radio en diversité pour ondes ultra courtesInfo
- Publication number
- FR71464E FR71464E FR71464DA FR71464E FR 71464 E FR71464 E FR 71464E FR 71464D A FR71464D A FR 71464DA FR 71464 E FR71464 E FR 71464E
- Authority
- FR
- France
- Prior art keywords
- radio reception
- reception circuits
- diversity radio
- shortwave
- ultra
- 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
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
- H04B7/10—Polarisation diversity; Directional diversity
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/30—Automatic scanning over a band of frequencies where the scanning is accomplished by mechanical means, e.g. by a motor
-
- 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
- H04B7/0837—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 pre-detection combining
- H04B7/084—Equal gain combining, only phase adjustments
-
- 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
- H04B7/0837—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 pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Toys (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Selective Calling Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB328282X | 1953-04-22 | ||
US787095XA | 1954-09-20 | 1954-09-20 | |
GB10856/56A GB797123A (en) | 1953-04-22 | 1956-04-10 | Radio diversity receiving system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR71464E true FR71464E (fr) | 1960-01-05 |
Family
ID=32329556
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1104805D Expired FR1104805A (fr) | 1953-04-22 | 1954-04-21 | Circuits de réception radio en diversité pour ondes ultra-courtes |
FR67714D Expired FR67714E (fr) | 1953-04-22 | 1955-03-22 | Circuits de réception radio en diversité pour ondes ultra-courtes |
FR1138803D Expired FR1138803A (fr) | 1953-04-22 | 1955-09-20 | Dispositif d'accord perfectionné pour appareils récepteurs de radiophonie |
FR71464D Expired FR71464E (fr) | 1953-04-22 | 1957-04-09 | Circuits de réception radio en diversité pour ondes ultra courtes |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1104805D Expired FR1104805A (fr) | 1953-04-22 | 1954-04-21 | Circuits de réception radio en diversité pour ondes ultra-courtes |
FR67714D Expired FR67714E (fr) | 1953-04-22 | 1955-03-22 | Circuits de réception radio en diversité pour ondes ultra-courtes |
FR1138803D Expired FR1138803A (fr) | 1953-04-22 | 1955-09-20 | Dispositif d'accord perfectionné pour appareils récepteurs de radiophonie |
Country Status (6)
Country | Link |
---|---|
US (2) | US2854568A (fr) |
BE (1) | BE528237A (fr) |
CH (2) | CH328282A (fr) |
DE (1) | DE971592C (fr) |
FR (4) | FR1104805A (fr) |
GB (3) | GB734545A (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2979613A (en) * | 1958-08-26 | 1961-04-11 | Itt | Radio diversity receiving system |
US3037113A (en) * | 1959-10-12 | 1962-05-29 | Motorola Inc | Control system |
GB932808A (en) * | 1960-09-30 | 1963-07-31 | Gen Electric Co Ltd | Improvements in or relating to electric signal combining arrangements |
FR2077969B1 (fr) * | 1970-02-27 | 1973-10-19 | Thomson Csf | |
US4075566A (en) * | 1972-03-30 | 1978-02-21 | Catv Components Co. | Co-channel interference suppression apparatus |
DE2912087C2 (de) * | 1979-03-27 | 1982-06-24 | Siemens AG, 1000 Berlin und 8000 München | Antenne mit einem unerwünschte Nullstellen aufweisenden Diagramm |
US4293955A (en) * | 1980-03-17 | 1981-10-06 | Telex Communications, Inc. | Diversity reception system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2042831A (en) * | 1934-05-28 | 1936-06-02 | Rca Corp | Receiving system |
DE669326C (de) * | 1935-12-28 | 1938-12-22 | Telefunken Gmbh | Anordnung zur Erzielung selbsttaetiger Regelungen in Empfaengern |
US2375223A (en) * | 1939-08-24 | 1945-05-08 | Univ Leland Stanford Junior | Dielectric guide signaling |
US2448866A (en) * | 1944-01-14 | 1948-09-07 | Rca Corp | Diversity receiving system |
FR992116A (fr) * | 1944-05-12 | 1951-10-15 | Radio Electr Soc Fr | Perfectionnements aux liaisons radio-électriques |
NL75109C (fr) * | 1944-10-05 | |||
US2499967A (en) * | 1945-10-06 | 1950-03-07 | Colonial Radio Corp | Push-button tuning signal-seeking receiver |
US2499584A (en) * | 1945-10-15 | 1950-03-07 | Belmont Radio Corp | Signal-seeking tuner |
US2629816A (en) * | 1948-03-16 | 1953-02-24 | Int Standard Electric Corp | Diversity system |
US2624834A (en) * | 1949-09-29 | 1953-01-06 | Rca Corp | Diversity frequency shift reception |
US2678385A (en) * | 1951-04-16 | 1954-05-11 | Rca Corp | Diversity receiver |
US2786133A (en) * | 1953-03-05 | 1957-03-19 | Motorola Inc | Diversity receiving system |
-
0
- BE BE528237D patent/BE528237A/xx unknown
-
1953
- 1953-04-22 GB GB11075/53A patent/GB734545A/en not_active Expired
-
1954
- 1954-04-14 US US423108A patent/US2854568A/en not_active Expired - Lifetime
- 1954-04-21 CH CH328282D patent/CH328282A/de unknown
- 1954-04-21 FR FR1104805D patent/FR1104805A/fr not_active Expired
-
1955
- 1955-03-22 FR FR67714D patent/FR67714E/fr not_active Expired
- 1955-09-02 GB GB25261/55A patent/GB787095A/en not_active Expired
- 1955-09-20 FR FR1138803D patent/FR1138803A/fr not_active Expired
- 1955-09-21 DE DEG18009A patent/DE971592C/de not_active Expired
-
1957
- 1957-03-16 CH CH353776D patent/CH353776A/de unknown
- 1957-03-28 US US649205A patent/US2844716A/en not_active Expired - Lifetime
- 1957-04-09 FR FR71464D patent/FR71464E/fr not_active Expired
-
1959
- 1959-08-11 GB GB27374/59A patent/GB882988A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1138803A (fr) | 1957-06-20 |
GB787095A (en) | 1957-12-04 |
FR67714E (fr) | 1958-03-18 |
GB882988A (en) | 1961-11-22 |
CH353776A (de) | 1961-04-30 |
US2854568A (en) | 1958-09-30 |
CH328282A (de) | 1958-02-28 |
DE971592C (de) | 1959-02-26 |
FR1104805A (fr) | 1955-11-24 |
US2844716A (en) | 1958-07-22 |
BE528237A (fr) | 1900-01-01 |
GB734545A (en) | 1955-08-03 |
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