FR1104805A - Circuits de réception radio en diversité pour ondes ultra-courtes - Google Patents

Circuits de réception radio en diversité pour ondes ultra-courtes

Info

Publication number
FR1104805A
FR1104805A FR1104805DA FR1104805A FR 1104805 A FR1104805 A FR 1104805A FR 1104805D A FR1104805D A FR 1104805DA FR 1104805 A FR1104805 A FR 1104805A
Authority
FR
France
Prior art keywords
shortwave
ultra
radio reception
reception circuits
diversity radio
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
Application number
Other languages
English (en)
Inventor
Leonard Lewin
Thomas Harold Walker
Albert Edwin Pethick
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR1104805A publication Critical patent/FR1104805A/fr
Priority claimed from GB10856/56A external-priority patent/GB797123A/en
Expired legal-status Critical Current

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)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Toys (AREA)
FR1104805D 1953-04-22 1954-04-21 Circuits de réception radio en diversité pour ondes ultra-courtes Expired FR1104805A (fr)

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
FR1104805A true FR1104805A (fr) 1955-11-24

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 After (3)

Application Number Title Priority Date Filing Date
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

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077969A1 (fr) * 1970-02-27 1971-11-05 Thomson Csf

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077969A1 (fr) * 1970-02-27 1971-11-05 Thomson Csf

Also Published As

Publication number Publication date
CH353776A (de) 1961-04-30
BE528237A (fr) 1900-01-01
FR67714E (fr) 1958-03-18
FR1138803A (fr) 1957-06-20
US2854568A (en) 1958-09-30
GB882988A (en) 1961-11-22
US2844716A (en) 1958-07-22
GB734545A (en) 1955-08-03
DE971592C (de) 1959-02-26
FR71464E (fr) 1960-01-05
CH328282A (de) 1958-02-28
GB787095A (en) 1957-12-04

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