GB450272A - Improvements in apparatus for receiving electrical signals - Google Patents

Improvements in apparatus for receiving electrical signals

Info

Publication number
GB450272A
GB450272A GB1268435A GB1268435A GB450272A GB 450272 A GB450272 A GB 450272A GB 1268435 A GB1268435 A GB 1268435A GB 1268435 A GB1268435 A GB 1268435A GB 450272 A GB450272 A GB 450272A
Authority
GB
United Kingdom
Prior art keywords
filter
intermediate frequency
general electric
electrical signals
capacity
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
GB1268435A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1268435A priority Critical patent/GB450272A/en
Publication of GB450272A publication Critical patent/GB450272A/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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

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

Abstract

450,272. Impedance networks. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and BLIGH, N. R., and WELLS, G. M., c/o General Electric Co., Ltd., Wembley, Middlesex. April 27, 1935, No. 12684. [Class 40 (iii)] In a superheterodyne receiver in which the intermediate frequency is higher than the frequency of the signal, a filter of the kind shown in Fig. 1 is employed and the values of L, C1 are so adjusted that the intermediate frequency is rejected. The capacity C1 may be the self capacity of the coil L and the filter may be associated with the aerial circuit or form the second element of a bandpass filter as shown in Fig. 3. In a modification, the filter is used as an intervalve coupling, Fig. 4 (not shown). When a receiver operates over several wavebands the intermediate frequency may be changed with the waveband so as to be above that of the operative band.
GB1268435A 1935-04-27 1935-04-27 Improvements in apparatus for receiving electrical signals Expired GB450272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1268435A GB450272A (en) 1935-04-27 1935-04-27 Improvements in apparatus for receiving electrical signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1268435A GB450272A (en) 1935-04-27 1935-04-27 Improvements in apparatus for receiving electrical signals

Publications (1)

Publication Number Publication Date
GB450272A true GB450272A (en) 1936-07-14

Family

ID=10009225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1268435A Expired GB450272A (en) 1935-04-27 1935-04-27 Improvements in apparatus for receiving electrical signals

Country Status (1)

Country Link
GB (1) GB450272A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007825B (en) * 1952-01-21 1957-05-09 Philips Nv Circuit arrangement for frequency conversion of ultra-high frequency oscillations
DE1026800B (en) * 1953-12-10 1958-03-27 Heinz Fritz Reichenkron Dipl I Input circuit of a VHF overlay receiver
DE972521C (en) * 1953-05-19 1959-08-06 Graetz Kommandit Ges Circuit arrangement for radio receivers based on the superposition principle with tunable ferrite rod antenna for suppressing intermediate frequency interference
DE1116745B (en) * 1959-01-13 1961-11-09 Tesla Np Input circuit for overlay receiver with capacitive antenna coupling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007825B (en) * 1952-01-21 1957-05-09 Philips Nv Circuit arrangement for frequency conversion of ultra-high frequency oscillations
DE972521C (en) * 1953-05-19 1959-08-06 Graetz Kommandit Ges Circuit arrangement for radio receivers based on the superposition principle with tunable ferrite rod antenna for suppressing intermediate frequency interference
DE1026800B (en) * 1953-12-10 1958-03-27 Heinz Fritz Reichenkron Dipl I Input circuit of a VHF overlay receiver
DE1116745B (en) * 1959-01-13 1961-11-09 Tesla Np Input circuit for overlay receiver with capacitive antenna coupling

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