OA01837A - Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence ou en phase. - Google Patents

Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence ou en phase.

Info

Publication number
OA01837A
OA01837A OA52215A OA52215A OA01837A OA 01837 A OA01837 A OA 01837A OA 52215 A OA52215 A OA 52215A OA 52215 A OA52215 A OA 52215A OA 01837 A OA01837 A OA 01837A
Authority
OA
OAPI
Prior art keywords
modulated
radio
frequency
phase
electric wave
Prior art date
Application number
OA52215A
Other languages
English (en)
French (fr)
Original Assignee
Thomson Houston Comp Francaise
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 FR991697A external-priority patent/FR1419019A/fr
Application filed by Thomson Houston Comp Francaise filed Critical Thomson Houston Comp Francaise
Publication of OA01837A publication Critical patent/OA01837A/xx

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B14/00Transmission systems not characterised by the medium used for transmission
    • H04B14/002Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/006Angle modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837Diversity 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
    • H04B7/0842Weighted combining
    • H04B7/0865Independent weighting, i.e. weights based on own antenna reception parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12Frequency diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
OA52215A 1964-10-16 1965-10-15 Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence ou en phase. OA01837A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR991697A FR1419019A (fr) 1964-10-16 1964-10-16 Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence
FR19987A FR88081E (fr) 1964-10-16 1965-06-09 Perfectionnements aux récepteurs d'ondes radioélectriques modulées en fréquence

Publications (1)

Publication Number Publication Date
OA01837A true OA01837A (fr) 1970-01-14

Family

ID=26164073

Family Applications (1)

Application Number Title Priority Date Filing Date
OA52215A OA01837A (fr) 1964-10-16 1965-10-15 Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence ou en phase.

Country Status (8)

Country Link
US (1) US3457512A (xx)
BE (1) BE670616A (xx)
DE (1) DE1466048B2 (xx)
FR (1) FR88081E (xx)
GB (1) GB1104436A (xx)
LU (1) LU49630A1 (xx)
NL (1) NL6513363A (xx)
OA (1) OA01837A (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681695A (en) * 1969-09-02 1972-08-01 Raytheon Co Multipath compensation system
US3746994A (en) * 1971-03-11 1973-07-17 Datel Corp Apparatus for determining the validity of data received by data
US4117410A (en) * 1977-10-13 1978-09-26 Motorola, Inc. Phase locked loop signal demodulator and squelch circuit
US4340782A (en) * 1980-06-13 1982-07-20 Magnavox Consumer Electronics Co. Circuit for demodulating amplitude and angle modulated broadcast signals

Family Cites Families (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
US3195049A (en) * 1960-05-04 1965-07-13 Itt Radio diversity receiving system with automatic phase control
US3188571A (en) * 1962-11-28 1965-06-08 Collins Radio Co Detected noise actuated, agc noisequieting action dependent, and total noise level adaptive rf receiver squelch system
US3328698A (en) * 1963-06-28 1967-06-27 Itt Selector for choosing the strongest signal including means for inhibiting all signals below a selected level
US3348152A (en) * 1964-03-23 1967-10-17 Jr Charles R Laughlin Diversity receiving system with diversity phase-lock
US3366884A (en) * 1964-07-30 1968-01-30 Fujitsu Ltd Radio frequency noise eliminating circuit

Also Published As

Publication number Publication date
DE1466048A1 (xx) 1971-03-25
US3457512A (en) 1969-07-22
DE1466048B2 (de) 1971-03-25
FR88081E (fr) 1966-01-07
LU49630A1 (xx) 1965-12-13
GB1104436A (en) 1968-02-28
NL6513363A (xx) 1966-04-18
BE670616A (xx) 1966-04-07

Similar Documents

Publication Publication Date Title
FR1496141A (fr) Générateur d'ondes modulées en fréquence
FR1419597A (fr) Perfectionnements aux antennes pour ondes ultra-courtes
FR84319E (fr) Démodulateur d'ondes modulées en fréquence
OA01837A (fr) Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence ou en phase.
FR1452029A (fr) Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquenceou en phase
FR1512751A (fr) Circuits de démodulation d'ondes à modulation angulaire
FR1328367A (fr) Démodulateur d'ondes modulées en fréquence
DK114914B (da) Kobling for frekvensmodulerede signaler.
FR85134E (fr) Démodulateur d'ondes modulées en fréquence
FR1453549A (fr) Démodulateur de signaux modulés en fréquence
FR1419019A (fr) Perfectionnements aux récepteurs d'ondes radio-électriques modulées en fréquence
FR91136E (fr) Démodulateur d'ondes modulées en fréquence
FR1521063A (fr) Perfectionnements aux récepteurs pour ondes modulées en phase ou en fréquence
CH493854A (de) FM-Dauerstrich-Radiohöhenmesser
FR1513456A (fr) Récepteur pour signaux modulés en fréquence
OA01281A (fr) Dispositif récepteur d'ondes accoustiques.
FR1475700A (fr) Perfectionnements aux radars à modulation de fréquence
FR1413552A (fr) Oscillateur modulé en fréquence
CH439415A (fr) Oscillateur modulé en fréquence
FR92198E (fr) Récepteur pour signaux modulés en fréquence
FR1380187A (fr) Démodulateur de signal modulé en fréquence
AU294315B2 (en) Frequency modulated oscillator
FR1436659A (fr) Perfectionnements aux oscillateurs modulés en fréquence
FR1289104A (fr) Perfectionnements aux systèmes discriminateurs de fréquence d'ondes électromagnétiques
AU5042264A (en) Frequency modulated oscillator