GB655247A - Improvements in or relating to high frequency electron discharge tube circuit arrangements - Google Patents

Improvements in or relating to high frequency electron discharge tube circuit arrangements

Info

Publication number
GB655247A
GB655247A GB30587/46A GB3058746A GB655247A GB 655247 A GB655247 A GB 655247A GB 30587/46 A GB30587/46 A GB 30587/46A GB 3058746 A GB3058746 A GB 3058746A GB 655247 A GB655247 A GB 655247A
Authority
GB
United Kingdom
Prior art keywords
inductor
valve
grid
stage
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
GB30587/46A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB655247A publication Critical patent/GB655247A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
    • H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
    • H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices

Landscapes

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

Abstract

655,247. Valve circuits. RADIO CORPORATION OF AMERICA. Oct. 14, 1946, No. 30587. Convention date, Oct. 16, 1945. [Classes 40 (v) and 40 (vi)] A two conductor transmission line is coupled to the grid and cathode of a valve by connecting one conductor directly to the cathode and the other through an inductor to the grid the value of the inductor being such that it is tuned by the input capacitance of the valve and the output capacitance of the line to the desired frequency. The Figure shows the frequency doubler and driver of a frequency modulated 78-104 Mc/s. transmitter. The F.M. carrier input is applied to a coaxial line 4 and then via inductor 10 and blocking capacitor 12 to the grid of frequency doubler valve 8. Inductor 10 serves to match. the output impedance of the line 2 to. the input impedance of valve 8 and also to cause the stray capacities 13, 14 which tune the inductor, to be effectively in series, thus reducing their effective value. Filter 15, 17 prevent the flow of R.F. currents through the grid leak resistor 26. A similar inductor 40 matches. the impedance of the doubler stage 8 to that of the driver stage 18, inductors 44, 46 acting as R.F. chokes and also effectively increases the capacitive reactance of the input circuit of valve 18. Inductor 40 is tuned by the stray capacitances 16, 20 of the circuit to the second harmonic of the input signal applied to valve. 8. Inductor 102 matches the driver stage 18 to a transmission line 114 which feeds the 'power output stage described in Specification 655,295, a variable capacitor 113 serving to adjust the load on stage 18. Capacitors 90 and 92 may be adjusted to series tune the connections of the screen grids to earth. The Specification as open to inspection under Sect. 91 also-includes the subject-matter of Specification 656,295.
GB30587/46A 1945-10-16 1946-10-14 Improvements in or relating to high frequency electron discharge tube circuit arrangements Expired GB655247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US655247XA 1945-10-16 1945-10-16

Publications (1)

Publication Number Publication Date
GB655247A true GB655247A (en) 1951-07-18

Family

ID=22063320

Family Applications (2)

Application Number Title Priority Date Filing Date
GB30587/46A Expired GB655247A (en) 1945-10-16 1946-10-14 Improvements in or relating to high frequency electron discharge tube circuit arrangements
GB5642/50A Expired GB655295A (en) 1945-10-16 1946-10-14 Improvements in or relating to high frequency electron discharge tube circuit arrangements

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB5642/50A Expired GB655295A (en) 1945-10-16 1946-10-14 Improvements in or relating to high frequency electron discharge tube circuit arrangements

Country Status (3)

Country Link
BE (1) BE468514A (en)
FR (1) FR934167A (en)
GB (2) GB655247A (en)

Also Published As

Publication number Publication date
GB655295A (en) 1951-07-18
FR934167A (en) 1948-05-13
BE468514A (en)

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