BE862789A - Procede et installation pour la reception et la production de signaux modules en frequence - Google Patents
Procede et installation pour la reception et la production de signaux modules en frequenceInfo
- Publication number
- BE862789A BE862789A BE184229A BE184229A BE862789A BE 862789 A BE862789 A BE 862789A BE 184229 A BE184229 A BE 184229A BE 184229 A BE184229 A BE 184229A BE 862789 A BE862789 A BE 862789A
- Authority
- BE
- Belgium
- Prior art keywords
- installation
- receiving
- modulated signals
- frequency modulated
- generating frequency
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
- H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
- H03D3/009—Compensating quadrature phase or amplitude imbalances
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU77HI455A HU175236B (hu) | 1977-01-10 | 1977-01-10 | Sposob i ustrojstvo dlja prijoma i generacii chastotno-modulirovannykh signalov |
Publications (1)
Publication Number | Publication Date |
---|---|
BE862789A true BE862789A (fr) | 1978-05-02 |
Family
ID=10997191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE184229A BE862789A (fr) | 1977-01-10 | 1978-01-10 | Procede et installation pour la reception et la production de signaux modules en frequence |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE862789A (de) |
DE (1) | DE2800242A1 (de) |
HU (1) | HU175236B (de) |
NL (1) | NL7800249A (de) |
SE (1) | SE7800254L (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7808637A (nl) * | 1978-08-22 | 1980-02-26 | Philips Nv | Ontvanger voor frequentiegemoduleerde signalen met twee quadratuur kanalen. |
US4525862A (en) * | 1980-07-02 | 1985-06-25 | Motorola, Inc. | Transform modulation system |
GB2094079A (en) * | 1981-02-20 | 1982-09-08 | Philips Electronic Associated | Fm demodulator |
EP0072241B1 (de) * | 1981-08-10 | 1986-08-13 | Fujitsu Limited | Schaltung zur Rückgewinnung einer Trägerwelle |
US4476585A (en) * | 1982-01-25 | 1984-10-09 | International Telephone And Telegraph Corporation | Baseband demodulator for FM signals |
FR2543379B1 (fr) * | 1983-03-25 | 1990-03-02 | Thomson Csf | Dispositif de demodulation directe en hyperfrequence et chaine de reception hyperfrequence comportant un tel dispositif |
DE3340325A1 (de) * | 1983-11-08 | 1985-05-15 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und schaltungsanordnung zur feststellung des vorhandenseins oder nichtvorhandenseins mindestens einer frequenz bekannten wertes in einem aus mehreren frequenzen zusammengesetzten eingangssignal |
GB2175473A (en) * | 1985-05-17 | 1986-11-26 | Philips Electronic Associated | D.c. block capacitor circuit |
DE3613994A1 (de) * | 1986-04-25 | 1987-10-29 | Schrack Elektronik Ag | Schaltungsanordnung zum demodulieren frequenzmodulierter signale |
GB2193405A (en) * | 1986-08-01 | 1988-02-03 | Philips Electronic Associated | Demodulating an angle-modulated signal |
GB2210743A (en) * | 1987-10-05 | 1989-06-14 | Philips Nv | Frequency difference detector (fdd) having automatic gain control and a carrier modulated receiver including the fdd |
GB2210742A (en) * | 1987-10-05 | 1989-06-14 | Philips Nv | Frequency difference detector (fdd) and a carrier modulated receiver including such a fdd |
NL8802868A (nl) * | 1988-11-21 | 1990-06-18 | Stichting Tech Wetenschapp | Fasevergrendelde lus met lusversterking - en nulpuntscompensatie. |
JPH04310037A (ja) * | 1991-04-09 | 1992-11-02 | Nec Corp | Fsk受信機 |
-
1977
- 1977-01-10 HU HU77HI455A patent/HU175236B/hu unknown
-
1978
- 1978-01-04 DE DE19782800242 patent/DE2800242A1/de not_active Withdrawn
- 1978-01-09 NL NL7800249A patent/NL7800249A/xx not_active Application Discontinuation
- 1978-01-10 SE SE7800254A patent/SE7800254L/xx unknown
- 1978-01-10 BE BE184229A patent/BE862789A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE2800242A1 (de) | 1978-07-13 |
HU175236B (hu) | 1980-06-28 |
NL7800249A (nl) | 1978-07-12 |
SE7800254L (sv) | 1978-07-11 |
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