BE555221A - - Google Patents
Info
- Publication number
- BE555221A BE555221A BE555221DA BE555221A BE 555221 A BE555221 A BE 555221A BE 555221D A BE555221D A BE 555221DA BE 555221 A BE555221 A BE 555221A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
- H03D3/08—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of diodes, e.g. Foster-Seeley discriminator
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
-
- 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
- H04L27/148—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using filters, including PLL-type filters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US567112A US2906873A (en) | 1956-02-23 | 1956-02-23 | Discriminator circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE555221A true BE555221A (is") |
Family
ID=24265765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE555221D BE555221A (is") | 1956-02-23 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2906873A (is") |
| BE (1) | BE555221A (is") |
| FR (1) | FR1166982A (is") |
| GB (1) | GB808164A (is") |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2969468A (en) * | 1957-02-21 | 1961-01-24 | Collins Radio Co | Frequency and phase discriminator |
| US3667062A (en) * | 1971-03-30 | 1972-05-30 | Gary O White | Active linear discriminator circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE721138C (de) * | 1937-08-14 | 1942-05-28 | Aeg | Anordnung zur Frequenzmessung bzw. frequenzabhaengigen Regelung fuer niederfrequenten Wechselstrom mittels eines gedaempften Schwingungskreises |
| US2243417A (en) * | 1939-06-01 | 1941-05-27 | Rca Corp | Frequency modulation receiver |
| US2374735A (en) * | 1943-03-31 | 1945-05-01 | Rca Corp | Combined discriminator and carrier filter circuits |
| BE481486A (is") * | 1947-03-27 | |||
| US2712600A (en) * | 1950-12-18 | 1955-07-05 | Gen Electric | Frequency response circuits |
| US2743361A (en) * | 1952-01-23 | 1956-04-24 | Motorola Inc | Selective squelch receiver |
-
0
- BE BE555221D patent/BE555221A/xx unknown
-
1956
- 1956-02-23 US US567112A patent/US2906873A/en not_active Expired - Lifetime
-
1957
- 1957-02-22 FR FR1166982D patent/FR1166982A/fr not_active Expired
- 1957-02-22 GB GB6047/57A patent/GB808164A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1166982A (fr) | 1958-11-18 |
| US2906873A (en) | 1959-09-29 |
| GB808164A (en) | 1959-01-28 |