GB627238A - Intermediate frequency amplifier - Google Patents

Intermediate frequency amplifier

Info

Publication number
GB627238A
GB627238A GB33167/46A GB3316746A GB627238A GB 627238 A GB627238 A GB 627238A GB 33167/46 A GB33167/46 A GB 33167/46A GB 3316746 A GB3316746 A GB 3316746A GB 627238 A GB627238 A GB 627238A
Authority
GB
United Kingdom
Prior art keywords
stage
stages
receiver
frequency
amplifier
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
GB33167/46A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB627238A publication Critical patent/GB627238A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

627,238. Valve circuits for radio reception; frequency modulation. BENDIX AVIATION CORPORATION. Nov. 7, 1946, No. 33167. Convention date, Dec. 13, 1945. [Class 40 (v)] Instability in the I.F. stages of a receiver, e.g. a F.M. receiver, which comprises both amplifying and limiting stages is prevented by the interposition of a frequency multiplying stage in the chain. The Figure shows in block schematic form a F.M. receiver in which instability due to coupling between the output and input circuits of the I.F. amplifier stages 12 and 13 is prevented by a frequency-multiplying stage 18 which ensures that the output and input signals are at different frequencies. A second multiplier may be introduced between the I.F. amplifier stage 13 and the limiter stage 14 and the gain may be increased by additional I.F. amplifier stages each being separated from the adjacent one by a further multiplier stage.
GB33167/46A 1945-12-13 1946-11-07 Intermediate frequency amplifier Expired GB627238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US627238XA 1945-12-13 1945-12-13

Publications (1)

Publication Number Publication Date
GB627238A true GB627238A (en) 1949-08-03

Family

ID=22044385

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33167/46A Expired GB627238A (en) 1945-12-13 1946-11-07 Intermediate frequency amplifier

Country Status (1)

Country Link
GB (1) GB627238A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149987A (en) * 1983-11-18 1985-06-19 Plessey Co Plc Frequency modulation detectors
US4608539A (en) * 1983-11-18 1986-08-26 Plessey Overseas Limited FM detector with injection locked divider input circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149987A (en) * 1983-11-18 1985-06-19 Plessey Co Plc Frequency modulation detectors
US4608539A (en) * 1983-11-18 1986-08-26 Plessey Overseas Limited FM detector with injection locked divider input circuit

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