GB422866A - Improvements in or relating to radio and other modulated carrier or like receivers - Google Patents

Improvements in or relating to radio and other modulated carrier or like receivers

Info

Publication number
GB422866A
GB422866A GB20642/33A GB2064233A GB422866A GB 422866 A GB422866 A GB 422866A GB 20642/33 A GB20642/33 A GB 20642/33A GB 2064233 A GB2064233 A GB 2064233A GB 422866 A GB422866 A GB 422866A
Authority
GB
United Kingdom
Prior art keywords
quenching
valve
oscillations
frequency
stage
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
GB20642/33A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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
Priority to DEM127982D priority Critical patent/DE635972C/en
Priority to NL40239D priority patent/NL40239C/xx
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB20642/33A priority patent/GB422866A/en
Priority to FR774887D priority patent/FR774887A/en
Priority to US733816A priority patent/US2100605A/en
Publication of GB422866A publication Critical patent/GB422866A/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
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D11/00—Super-regenerative demodulator circuits
    • H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations

Abstract

422,866. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and LINSELL, A. A., 43, West Hill, Sydenham, both in London. July 21, 1933, No. 20642. [Class 40 (v)] In a super-heterodyne receiver, a superregenerative stage precedes the frequency changing stage. In one embodiment, the quenching oscillations for the super-regenerative stage and the local oscillations for frequency changing are generated separately, Fig. 1, not shown. Preferably a single oscillator provides both the quenching and the local oscillations. The valve 1, Fig. 2, back coupled at 2, 3, is supplied over coupling 4 with quenching ing oscillations from a valve 6LO, whose grid is fed from an oscillator Q. The circuit 10, coupled to the output of valve 6LO and tuned to an harmonic of the quenching frequency, supplies the local oscillations over coupling 8<1> to the input of the frequency-changing circuit 11. The tuning elements in circuits 3, Q, 10, may be uni-controlled.
GB20642/33A 1933-07-21 1933-07-21 Improvements in or relating to radio and other modulated carrier or like receivers Expired GB422866A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DEM127982D DE635972C (en) 1933-07-21 Überrueckkopplungsempfaenger with intermediate frequency section
NL40239D NL40239C (en) 1933-07-21
GB20642/33A GB422866A (en) 1933-07-21 1933-07-21 Improvements in or relating to radio and other modulated carrier or like receivers
FR774887D FR774887A (en) 1933-07-21 1934-06-23 Improvements to modulated wave receptors
US733816A US2100605A (en) 1933-07-21 1934-07-05 Radio receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20642/33A GB422866A (en) 1933-07-21 1933-07-21 Improvements in or relating to radio and other modulated carrier or like receivers

Publications (1)

Publication Number Publication Date
GB422866A true GB422866A (en) 1935-01-21

Family

ID=10149284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20642/33A Expired GB422866A (en) 1933-07-21 1933-07-21 Improvements in or relating to radio and other modulated carrier or like receivers

Country Status (4)

Country Link
US (1) US2100605A (en)
FR (1) FR774887A (en)
GB (1) GB422866A (en)
NL (1) NL40239C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB453135A (en) * 1935-03-04 1936-09-04 Marconi Wireless Telegraph Co Improvements in or relating to television and like receivers
BE488951A (en) * 1946-08-07
US2609492A (en) * 1948-03-13 1952-09-02 Hazeltine Research Inc Tunable superheterodyne superregenerative receiver
BE487876A (en) * 1948-03-16
US2614212A (en) * 1948-11-19 1952-10-14 Hazeltine Research Inc Frequency converter system for radio receivers
US2748267A (en) * 1952-05-16 1956-05-29 Hazeltine Research Inc Superregenerative superheterodyne wave-signal receiver

Also Published As

Publication number Publication date
US2100605A (en) 1937-11-30
FR774887A (en) 1934-12-15
NL40239C (en)

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