GB296678A - Improvements in or relating to radio and the like receivers - Google Patents

Improvements in or relating to radio and the like receivers

Info

Publication number
GB296678A
GB296678A GB25277/28A GB2527728A GB296678A GB 296678 A GB296678 A GB 296678A GB 25277/28 A GB25277/28 A GB 25277/28A GB 2527728 A GB2527728 A GB 2527728A GB 296678 A GB296678 A GB 296678A
Authority
GB
United Kingdom
Prior art keywords
circuits
frequency
tuned
condensers
transformer
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
Application number
GB25277/28A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB296678A publication Critical patent/GB296678A/en
Expired legal-status Critical Current

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
    • H03D3/12—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 discharge tubes having more than two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Transmitters (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB25277/28A 1927-09-01 1928-09-03 Improvements in or relating to radio and the like receivers Expired GB296678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US216873A US1794932A (en) 1927-09-01 1927-09-01 Frequency modulation

Publications (1)

Publication Number Publication Date
GB296678A true GB296678A (en) 1929-02-07

Family

ID=22808816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25277/28A Expired GB296678A (en) 1927-09-01 1928-09-03 Improvements in or relating to radio and the like receivers

Country Status (4)

Country Link
US (1) US1794932A (enrdf_load_stackoverflow)
DE (1) DE515621C (enrdf_load_stackoverflow)
GB (1) GB296678A (enrdf_load_stackoverflow)
NL (1) NL27771C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753551C (de) * 1939-04-15 1953-03-09 Fernseh Gmbh Verfahren und Einrichtung zum Empfang einer mittels frequenzmodulierter Wellen uebertragenen Signalfolge
DE758225C (de) * 1937-04-13 1953-04-16 Rca Corp Schaltung zur Stabilisierung der mittleren Traegerfrequenz eines frequenz- oder phasenmodulierten Hochfrequenzsenders

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB497111A (en) * 1936-11-27 1938-12-13 Marconi Wireless Telegraph Co Improvements in or relating to frequency modulated carrier wave systems
US2417191A (en) * 1942-01-13 1947-03-11 Southwest Airmotive Company Airplane antenna automatic tuning system
US2494677A (en) * 1942-11-13 1950-01-17 Hartford Nat Bank & Trust Co Radio receiver with condenser tuning
US2415469A (en) * 1943-02-25 1947-02-11 Purdue Research Foundation Electrical control apparatus
US2428264A (en) * 1943-04-27 1947-09-30 Rca Corp Frequency discriminator circuits
US2519668A (en) * 1944-09-04 1950-08-22 Sidney S Konigsberg Indicating system
US2498340A (en) * 1945-01-22 1950-02-21 Rca Corp Antenna tuning control system
US2425923A (en) * 1945-03-07 1947-08-19 Rca Corp Frequency divider and discriminator circuit
US2545297A (en) * 1946-03-13 1951-03-13 Mittelmann Eugene Oscillation frequency control
US2747146A (en) * 1952-02-12 1956-05-22 Cook Electric Co Frequency enseitive control apparatus
US2820109A (en) * 1952-03-22 1958-01-14 Cgs Lab Inc Magnetic amplifier
US2812510A (en) * 1952-06-25 1957-11-05 Elmer H Schulz Frequency modulation system
US2830241A (en) * 1954-07-21 1958-04-08 Turck Jean Telecontrol device
US2929876A (en) * 1955-06-10 1960-03-22 Metallotecnica Soc Automatic frequency control device of very high stability and highly sensitive for radio receivers
US2915741A (en) * 1955-11-16 1959-12-01 Tele Dynamics Inc Automatic compensation in a telemetric system
US2901614A (en) * 1957-03-14 1959-08-25 Collins Radio Co Coarse frequency discriminator
US3074021A (en) * 1958-04-03 1963-01-15 Gen Electronic Lab Inc Crystal discriminator
US2996681A (en) * 1960-01-07 1961-08-15 Admiral Corp Transistorized peak detector
US3241077A (en) * 1961-07-06 1966-03-15 North American Aviation Inc Self-adaptive control system eliminating variable unwanted component
US3365147A (en) * 1965-04-12 1968-01-23 Honeywell Inc Control apparatus for steerable craft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758225C (de) * 1937-04-13 1953-04-16 Rca Corp Schaltung zur Stabilisierung der mittleren Traegerfrequenz eines frequenz- oder phasenmodulierten Hochfrequenzsenders
DE753551C (de) * 1939-04-15 1953-03-09 Fernseh Gmbh Verfahren und Einrichtung zum Empfang einer mittels frequenzmodulierter Wellen uebertragenen Signalfolge

Also Published As

Publication number Publication date
NL27771C (enrdf_load_stackoverflow)
DE515621C (de) 1931-01-09
US1794932A (en) 1931-03-03

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