US1851408A - Frequency multiplier circuit - Google Patents

Frequency multiplier circuit Download PDF

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Publication number
US1851408A
US1851408A US402961A US40296129A US1851408A US 1851408 A US1851408 A US 1851408A US 402961 A US402961 A US 402961A US 40296129 A US40296129 A US 40296129A US 1851408 A US1851408 A US 1851408A
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US
United States
Prior art keywords
grid
potential
circuit
condenser
frequency multiplier
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 - Lifetime
Application number
US402961A
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English (en)
Inventor
Runge Wilhelm
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.)
Telefunken AG
Original Assignee
Telefunken 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 Telefunken AG filed Critical Telefunken AG
Application granted granted Critical
Publication of US1851408A publication Critical patent/US1851408A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • thermionic tubes are employed, then it is usual to employ for the distortion either the lower or the upper knee in the anode-current characteristic of the tube. Hence, what is necessary is to provide the tube with such a biasing potential and to feed it with such a high unlwave alternating current potential that one of the knees in the plate characteristic will be passed over periodically.
  • Figure 2 illustrates-a graph useful in describing the action of said circuit.
  • Distortion in the grid circuit may be effecteld, for instance, in accordance with Figure
  • the alternating current potential 02 is fed to an oscillation circuit which by way of the audion condenser C is associated with the grid of a tube being connected with the filament by way of the resistance R.
  • the plate lead contains an oscillation circuit being tuned to the higher harmonic to be ob-' ta1ned.- In the oscillation circuit associated with the grid'end of the tube a sinuousalternating current potential is produced, the latter being supplied to the grid by way of condenser C.
  • V p A frequency multiplier circuit compristuned input and a tuned outputcircuiteach tuned to different frequencies, a condenser connected between said tuned input circuit and the grid of said triode and a resistance shunted across said condenser and said tuned inputcircuit-the values of said condenser and resistance being chosen so that for substantially the positive quarter of a cycle of input energy the grid of said device is subjected to approximately an equivalent negative biasing potential and for the remaining three quarters of the input cycle the charge on the grid leaks off to a negligible value.
  • an electrondischarge device having input and output circuits the output circuit being tuned to a 'cdiifer'ent frequency than thatof energy applied to the input circuit, a resistancein p'arallelwith said input circuit and iconiao

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  • Amplifiers (AREA)
US402961A 1928-11-10 1929-10-28 Frequency multiplier circuit Expired - Lifetime US1851408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE338712T 1928-11-10

Publications (1)

Publication Number Publication Date
US1851408A true US1851408A (en) 1932-03-29

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ID=31895016

Family Applications (1)

Application Number Title Priority Date Filing Date
US402961A Expired - Lifetime US1851408A (en) 1928-11-10 1929-10-28 Frequency multiplier circuit

Country Status (3)

Country Link
US (1) US1851408A (enrdf_load_stackoverflow)
FR (1) FR684527A (enrdf_load_stackoverflow)
GB (1) GB338712A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578613A (en) * 1947-01-24 1951-12-11 Rca Corp Second and third harmonic generator
US2579217A (en) * 1947-02-07 1951-12-18 Ferris Instr Lab Harmonic electrical alternating-current generation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578613A (en) * 1947-01-24 1951-12-11 Rca Corp Second and third harmonic generator
US2579217A (en) * 1947-02-07 1951-12-18 Ferris Instr Lab Harmonic electrical alternating-current generation

Also Published As

Publication number Publication date
GB338712A (enrdf_load_stackoverflow) 1930-11-27
FR684527A (fr) 1930-06-26

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