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.)
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Opta Radio A G
Original Assignee
Opta Radio A G
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 Opta Radio A GfiledCriticalOpta Radio A G
Application grantedgrantedCritical
Publication of FR899945ApublicationCriticalpatent/FR899945A/fr
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/06—Receivers
H04B1/16—Circuits
H04B1/26—Circuits for superheterodyne receivers
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
H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03C—MODULATION
H03C3/00—Angle modulation
H03C3/02—Details
H03C3/06—Means for changing frequency deviation
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Engineering & Computer Science
(AREA)
Power Engineering
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
FR899945D1942-05-011943-11-20Récepteur hétérodyne pour oscillations à fréquence modulée à des taux différents
ExpiredFR899945A
(fr)