GB1061301A - Improvements in or relating to high-frequency amplifiers - Google Patents

Improvements in or relating to high-frequency amplifiers

Info

Publication number
GB1061301A
GB1061301A GB74866A GB74866A GB1061301A GB 1061301 A GB1061301 A GB 1061301A GB 74866 A GB74866 A GB 74866A GB 74866 A GB74866 A GB 74866A GB 1061301 A GB1061301 A GB 1061301A
Authority
GB
United Kingdom
Prior art keywords
frequency
jan
distortion
stated
input
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
GB74866A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB1061301A publication Critical patent/GB1061301A/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
    • 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
    • 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)
  • Amplifiers (AREA)

Abstract

1,061,301. Amplifiers with negative feedback. SIEMENS & HALSKE A.G. Jan. 7, 1966 [Jan. 8, 1965], No. 748/66. Heading H3W. In a high-frequency amplifier amplifying signals having a frequency f, in which a negative feedback circuit is connected between output and input, distortion is reduced by connecting across the input a parallel tuned circuit Lg, Cg resonant at a frequency f 0 such that it presents an inductive reactance at the signal frequency f. The amplifier operates into a load 2 such as an aerial and the feedback network as shown comprises a capacity potentiometer 3, 4 and series resistor R 2 . It is stated in the Specification that (1) particularly favourable results are obtained if the condition is satisfied, and (2) the impedance Ri of the signal source U 0 and the total effective parallel resistance Rg of the tuned circuit should be in a ratio greater than that 1: 100. In covering a wide tuning range, the value of the inductance Lg may be altered stepwise so as to maintain the distortion at a minimum over the range. The arrangement is stated to be particularly suitable for use in single sideband short wave transmitters.
GB74866A 1965-01-08 1966-01-07 Improvements in or relating to high-frequency amplifiers Expired GB1061301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES94949A DE1219099B (en) 1965-01-08 1965-01-08 Matched high frequency amplifier with negative feedback

Publications (1)

Publication Number Publication Date
GB1061301A true GB1061301A (en) 1967-03-08

Family

ID=7519048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB74866A Expired GB1061301A (en) 1965-01-08 1966-01-07 Improvements in or relating to high-frequency amplifiers

Country Status (4)

Country Link
DE (1) DE1219099B (en)
FR (1) FR1463294A (en)
GB (1) GB1061301A (en)
NL (1) NL6517039A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE593050C (en) * 1928-09-30 1934-02-21 Rinaldo Bianchetti Tube amplifier

Also Published As

Publication number Publication date
DE1219099B (en) 1966-06-16
NL6517039A (en) 1966-07-11
FR1463294A (en) 1966-12-23

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