GB1083181A - Improvements in or relating to radio frequency amplifiers - Google Patents

Improvements in or relating to radio frequency amplifiers

Info

Publication number
GB1083181A
GB1083181A GB2931863A GB2931863A GB1083181A GB 1083181 A GB1083181 A GB 1083181A GB 2931863 A GB2931863 A GB 2931863A GB 2931863 A GB2931863 A GB 2931863A GB 1083181 A GB1083181 A GB 1083181A
Authority
GB
United Kingdom
Prior art keywords
line
electrical length
circuit
radio frequency
july
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
GB2931863A
Inventor
Alan Reginald Pratt
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
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB2931863A priority Critical patent/GB1083181A/en
Publication of GB1083181A publication Critical patent/GB1083181A/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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers

Landscapes

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

Abstract

1,083,181. Valve amplifying circuits. MARCONI CO. Ltd. July 10, 1964 [July 24, 1963], No. 29318/63. Heading H3W. [Also in Division H1] There is connected across the input of a radio frequency amplifier a transmission line 10 adjustable as to electrical length and having at spaced points along it a number of bridging capacitors 12 whose value and mutual spacing are such that when the line is adjusted to ar electrical length approaching a quater-wave length at the operating frequency, or an odd multiple thereof, the circuit appears inductive at that frequency and of low reactance at ar undesired harmonic thereof. As shown, the line, the electrical length of which is altered by means of an adjustable shorting member 11 forms with tapped tuned circuit 4, 5, the input circuit of a grounded-grid amplifier and serves to improve the efficiency of operation by reducing the amount of second harmonic appearing in the input circuit. The construction of a suitable line is also described in the Specification (see Division H1).
GB2931863A 1963-07-24 1963-07-24 Improvements in or relating to radio frequency amplifiers Expired GB1083181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2931863A GB1083181A (en) 1963-07-24 1963-07-24 Improvements in or relating to radio frequency amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2931863A GB1083181A (en) 1963-07-24 1963-07-24 Improvements in or relating to radio frequency amplifiers

Publications (1)

Publication Number Publication Date
GB1083181A true GB1083181A (en) 1967-09-13

Family

ID=10289651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2931863A Expired GB1083181A (en) 1963-07-24 1963-07-24 Improvements in or relating to radio frequency amplifiers

Country Status (1)

Country Link
GB (1) GB1083181A (en)

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