GB488898A - Arrangements for suppressing mirror frequencies in heterodyne radio receivers - Google Patents

Arrangements for suppressing mirror frequencies in heterodyne radio receivers

Info

Publication number
GB488898A
GB488898A GB22217/37A GB2221737A GB488898A GB 488898 A GB488898 A GB 488898A GB 22217/37 A GB22217/37 A GB 22217/37A GB 2221737 A GB2221737 A GB 2221737A GB 488898 A GB488898 A GB 488898A
Authority
GB
United Kingdom
Prior art keywords
circuit
aerial
arrangements
tuned
radio receivers
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
GB22217/37A
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
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 Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Publication of GB488898A publication Critical patent/GB488898A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

488,898. Impedance networks. LORENZ AKT.-GES., C. Aug. 12, 1937, No. 22217. Convention date, Aug. 12, 1936. [Classes 40 (iii) and 40 (v)] A circuit 6, 7 tuned to reject the image frequency in a superheterodyne receiver consists of a small inductance and a large condenser and is coupled loosely to the aerial 1, the tuning condenser being operated conjointly with the other tuning condensers. The aerial is preferably tapped on to the circuit 6, 7 and the rejector circuit 6, 7 is connected to the tuned circuit 10, 11 by a lead tapped onto both circuits. According to the Specification as open to inspection under Sect. 91 the aerial 1, Fig. 2 (Cancelled), is associated with a tuned circuit 14, 15 to reject the image frequency. This subject-matter does not appear in the Specification as accepted.
GB22217/37A 1936-08-12 1937-08-12 Arrangements for suppressing mirror frequencies in heterodyne radio receivers Expired GB488898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE488898X 1936-08-12

Publications (1)

Publication Number Publication Date
GB488898A true GB488898A (en) 1938-07-15

Family

ID=6543877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22217/37A Expired GB488898A (en) 1936-08-12 1937-08-12 Arrangements for suppressing mirror frequencies in heterodyne radio receivers

Country Status (2)

Country Link
FR (1) FR825463A (en)
GB (1) GB488898A (en)

Also Published As

Publication number Publication date
FR825463A (en) 1938-03-03

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