FR822127A - Receiving systems for modulated carrier waves - Google Patents
Receiving systems for modulated carrier wavesInfo
- Publication number
- FR822127A FR822127A FR822127DA FR822127A FR 822127 A FR822127 A FR 822127A FR 822127D A FR822127D A FR 822127DA FR 822127 A FR822127 A FR 822127A
- Authority
- FR
- France
- Prior art keywords
- carrier waves
- modulated carrier
- receiving systems
- systems
- receiving
- 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
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
- H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
- H03D3/004—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling an oscillator, e.g. the local oscillator
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmitters (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70929A US2075503A (en) | 1936-03-26 | 1936-03-26 | Reception of frequency modulated waves |
Publications (1)
Publication Number | Publication Date |
---|---|
FR822127A true FR822127A (en) | 1937-12-21 |
Family
ID=22098207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR822127D Expired FR822127A (en) | 1936-03-26 | 1937-03-25 | Receiving systems for modulated carrier waves |
Country Status (4)
Country | Link |
---|---|
US (1) | US2075503A (en) |
FR (1) | FR822127A (en) |
GB (1) | GB489636A (en) |
NL (1) | NL49750C (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE914866C (en) * | 1940-08-01 | 1954-07-12 | Lorenz C Ag | Transpose receiver with frequency counter-coupling |
US2684439A (en) * | 1949-12-19 | 1954-07-20 | Padevco Inc | Frequency modulation receiver system for overlapping waves |
DE1081938B (en) * | 1955-10-29 | 1960-05-19 | Int Standard Electric Corp | Radio receiver for receiving carrier frequency and sideband components according to the correlation principle |
BE570280A (en) * | 1957-08-12 | |||
DE1122110B (en) * | 1958-03-20 | 1962-01-18 | Nippon Electric Co | Receiving system for frequency or phase modulated vibrations |
US3053981A (en) * | 1959-07-06 | 1962-09-11 | Security First Nat Bank | High-gain frequency modulation tuner |
NL277424A (en) * | 1961-04-25 | |||
US4293818A (en) * | 1979-01-22 | 1981-10-06 | International Telephone And Telegraph Corporation | Frequency modulation threshold extension demodulator utilizing frequency compression feedback with frequency drift correction |
US4991226A (en) * | 1989-06-13 | 1991-02-05 | Bongiorno James W | FM detector with deviation manipulation |
US5691666A (en) * | 1995-06-07 | 1997-11-25 | Owen; Joseph C. | Full threshold FM deviation compression feedback demodulator and method |
-
0
- NL NL49750D patent/NL49750C/xx active
-
1936
- 1936-03-26 US US70929A patent/US2075503A/en not_active Expired - Lifetime
-
1937
- 1937-01-29 GB GB2728/37A patent/GB489636A/en not_active Expired
- 1937-03-25 FR FR822127D patent/FR822127A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB489636A (en) | 1938-07-29 |
NL49750C (en) | |
US2075503A (en) | 1937-03-30 |
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