GB360305A - Improvements in or relating to radio and like high frequency receivers - Google Patents

Improvements in or relating to radio and like high frequency receivers

Info

Publication number
GB360305A
GB360305A GB5297/31A GB529731A GB360305A GB 360305 A GB360305 A GB 360305A GB 5297/31 A GB5297/31 A GB 5297/31A GB 529731 A GB529731 A GB 529731A GB 360305 A GB360305 A GB 360305A
Authority
GB
United Kingdom
Prior art keywords
circuits
input
feb
valves
intermediate frequency
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
GB5297/31A
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
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
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB360305A publication Critical patent/GB360305A/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
    • H03D7/14—Balanced arrangements
    • H03D7/1416—Balanced arrangements with discharge tubes having more than two electrodes

Abstract

360,305. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Roberts, W. van B. ; 155, Hodge Road, Princeton, New Jersey, U.S.A.) Feb. 19, 1931, No. 5297. Convention date, Feb. 19, 1930. [Class 40 (v).] A superheterodyne receiver comprises a pair of valves 7, 8, in push-pull, a signal receiving circuit 9 and a local oscillation circuit 3, one of said circuits being symmetrically coupled with the input circuits of the valves, and the other coupled to the input of one valve only, while the intermediate frequency amplifier is differentially associated with the output inductance L1. When the oscillator 3 is inoperative no signal is passed to the intermediate frequency amplifier owing to the in-phase input and differential output; interference from undesired signals is thus eliminated. A band pass filter may be used between the aerial and circuit 9, which may be untuned.
GB5297/31A 1930-02-19 1931-02-19 Improvements in or relating to radio and like high frequency receivers Expired GB360305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US360305XA 1930-02-19 1930-02-19

Publications (1)

Publication Number Publication Date
GB360305A true GB360305A (en) 1931-11-05

Family

ID=21886208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5297/31A Expired GB360305A (en) 1930-02-19 1931-02-19 Improvements in or relating to radio and like high frequency receivers

Country Status (1)

Country Link
GB (1) GB360305A (en)

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