GB404225A - Improvements in or relating to wireless receiving systems connecting aerials to distributing systems - Google Patents

Improvements in or relating to wireless receiving systems connecting aerials to distributing systems

Info

Publication number
GB404225A
GB404225A GB20180/33A GB2018033A GB404225A GB 404225 A GB404225 A GB 404225A GB 20180/33 A GB20180/33 A GB 20180/33A GB 2018033 A GB2018033 A GB 2018033A GB 404225 A GB404225 A GB 404225A
Authority
GB
United Kingdom
Prior art keywords
amplifier
output transformer
frequencies
parallel
systems
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
GB20180/33A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB404225A publication Critical patent/GB404225A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

404,225. Wireless receiving systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. July 17, 1933, No. 20180. Convention date, July 16, 1932. [Class 40 (v).] A wireless aerial is coupled to a distribution system by a number of amplifiers in parallel each effecting optimum amplification for a different range of frequencies and the output transformer of each amplifier is dimensioned to match the line impedance for the frequency range to be amplified. The amplifier 2 for the higher frequencies, as shown, has the output transformer secondary connected in series with a condenser 5 and in parallel with the secondary of the output transformer of the amplifier 1 for the lower frequencies. Alternatively the output transformer secondary windings may be connected in series with a small condenser in parallel with the output transformer of the amplifier operating on the lower frequencies. The inputs to the amplifiers may include band-pass filters so that cross modulation does not produce sum or difference frequencies within the frequency range of the amplifier.
GB20180/33A 1932-07-16 1933-07-17 Improvements in or relating to wireless receiving systems connecting aerials to distributing systems Expired GB404225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE404225X 1932-07-16

Publications (1)

Publication Number Publication Date
GB404225A true GB404225A (en) 1934-01-11

Family

ID=6421697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20180/33A Expired GB404225A (en) 1932-07-16 1933-07-17 Improvements in or relating to wireless receiving systems connecting aerials to distributing systems

Country Status (2)

Country Link
FR (1) FR758542A (en)
GB (1) GB404225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007117248A1 (en) * 2006-04-12 2007-10-18 Thomson Licensing Active splitter device and method using diplexed front end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007117248A1 (en) * 2006-04-12 2007-10-18 Thomson Licensing Active splitter device and method using diplexed front end

Also Published As

Publication number Publication date
FR758542A (en) 1934-01-18

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