GB643290A - Improvements in or relating to circuits for demodulating frequency-modulated oscillations - Google Patents
Improvements in or relating to circuits for demodulating frequency-modulated oscillationsInfo
- Publication number
- GB643290A GB643290A GB822/48A GB82248A GB643290A GB 643290 A GB643290 A GB 643290A GB 822/48 A GB822/48 A GB 822/48A GB 82248 A GB82248 A GB 82248A GB 643290 A GB643290 A GB 643290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillations
- time
- class
- grid
- relating
- 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
- 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
- H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- X-Ray Techniques (AREA)
- Amplitude Modulation (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL266789X | 1947-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB643290A true GB643290A (en) | 1950-09-15 |
Family
ID=19781767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB822/48A Expired GB643290A (en) | 1947-01-14 | 1948-01-10 | Improvements in or relating to circuits for demodulating frequency-modulated oscillations |
Country Status (7)
Country | Link |
---|---|
US (1) | US2531866A (fr) |
BE (1) | BE479537A (fr) |
CH (1) | CH266789A (fr) |
DE (1) | DE832306C (fr) |
FR (1) | FR959556A (fr) |
GB (1) | GB643290A (fr) |
NL (1) | NL66481C (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969436C (de) * | 1951-04-26 | 1958-06-04 | Lorenz C Ag | Anordnung zur Demodulation frequenz- oder phasenmodulierter Schwingungen |
US2844720A (en) * | 1954-12-06 | 1958-07-22 | Radio Frequency Lab Inc | Frequency shift discriminator |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2296090A (en) * | 1942-09-15 | Frequency modulation receiver | ||
US2087429A (en) * | 1935-06-06 | 1937-07-20 | Rca Corp | Phase and frequency modulation wave receiving system |
US2239757A (en) * | 1940-01-02 | 1941-04-29 | Rca Corp | Signal detecting system |
US2263615A (en) * | 1940-04-06 | 1941-11-25 | Rca Corp | Frequency modulation detector |
US2284444A (en) * | 1940-08-27 | 1942-05-26 | Bell Telephone Labor Inc | Demodulation circuit |
US2273771A (en) * | 1941-04-10 | 1942-02-17 | Rca Corp | Frequency modulated carrier detector |
BE476627A (fr) * | 1941-12-19 | |||
BE469561A (fr) * | 1942-05-06 |
-
0
- NL NL66481D patent/NL66481C/xx active
- BE BE479537D patent/BE479537A/xx unknown
- FR FR959556D patent/FR959556A/fr not_active Expired
-
1948
- 1948-01-06 US US732A patent/US2531866A/en not_active Expired - Lifetime
- 1948-01-10 GB GB822/48A patent/GB643290A/en not_active Expired
- 1948-01-12 CH CH266789D patent/CH266789A/de unknown
- 1948-11-05 DE DEP20754A patent/DE832306C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL66481C (fr) | |
DE832306C (de) | 1952-02-21 |
BE479537A (fr) | |
CH266789A (de) | 1950-02-15 |
FR959556A (fr) | 1950-03-31 |
US2531866A (en) | 1950-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB650471A (en) | Pulse-time demodulator | |
GB656565A (en) | Improvements in or relating to pulse width discriminator circuits | |
GB568556A (en) | Improvements in or relating to frequency dividing circuits | |
GB643290A (en) | Improvements in or relating to circuits for demodulating frequency-modulated oscillations | |
GB642796A (en) | Improvements in or relating to superheterodyne mixing circuits | |
GB584465A (en) | An improved apparatus for varying or modulating the frequency of crystal controlled circuits | |
GB648049A (en) | Improvements in and relating to angle modulation demodulators | |
GB697127A (en) | Multiple stable state electron-discharge tube circuits | |
GB658837A (en) | Improvements in or relating to circuits for automatic frequency-correction | |
GB380144A (en) | Improvements in and relating to thermionic valves and circuits for the generation, modulation and controlling of electric oscillations | |
GB642757A (en) | Improvements in or relating to the frequency-stabilisation of oscillators | |
GB653824A (en) | Electric pulse-time modulator | |
GB687205A (en) | Improvements in or relating to means for producing pulses of alternating current from direct current impulses | |
GB663716A (en) | Improvements in or relating to circuits for demodulating modulated-pulse signals | |
GB652896A (en) | Improvements in or relating to frequency modulation oscillation generators | |
GB641599A (en) | Improvements in or relating to thermionic valve circuits | |
GB637597A (en) | Improvements in or relating to circuit arrangements for producing control signals dependent upon the frequency difference between electrical oscillations | |
GB560780A (en) | Improvements in or relating to thermionic oscillation generators | |
GB648129A (en) | Improvements in and relating to frequency modulation detectors | |
GB638683A (en) | Improvements in or relating to electric pulse circuits | |
GB617541A (en) | Improvements in or relating to thermionic valve circuits for generating two alternating voltages whose frequencies are in harmonic relation | |
GB599080A (en) | Improvements in and relating to the frequency control of multivibrators | |
GB698950A (en) | Electrical pulse shaping circuits | |
GB670363A (en) | Improvements in and relating to frequency divider circuits | |
GB563385A (en) | Improvements in or relating to signal modulating devices for radio telegraph transmitters |