US1744711A - Radio transmitting system - Google Patents

Radio transmitting system Download PDF

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Publication number
US1744711A
US1744711A US70729A US7072925A US1744711A US 1744711 A US1744711 A US 1744711A US 70729 A US70729 A US 70729A US 7072925 A US7072925 A US 7072925A US 1744711 A US1744711 A US 1744711A
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US
United States
Prior art keywords
frequency
source
circuit
valves
phase
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
US70729A
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English (en)
Inventor
Arco Georg Von
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.)
DRAHTLOSE TELEGRAPHIE MBH
Gesellschaft fur Drahtlose Telegraphie Mbh Hallesches
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DRAHTLOSE TELEGRAPHIE MBH
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Application filed by DRAHTLOSE TELEGRAPHIE MBH filed Critical DRAHTLOSE TELEGRAPHIE MBH
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Publication of US1744711A publication Critical patent/US1744711A/en
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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

  • My invention relates to radio signaling systems and particularly to phase splitting und frequency multiplying means in connection therewith.
  • An ob'ect of my4 invention is to rovide a radio requency geznerator adapte to the generation ofrelatively very high radio frequencies.
  • Another object of my invention is to provide in combination a radio frequency enerator and an amplifier adaptecl to mult1ply the frequency thereof.
  • Another object of my invention is t0 provide a rad io frequency generating system adapted to generate large powers at very high 1 frequencies.
  • Another object 0f my invention is to provide means for counteracting the efi'ect cf tube capacitance in the generation of radio frequencies above 1500 kilocycles.
  • the subject-matter of the present invention consists in -exciting seve'ral high frequenc amplifier tubes of large power in parallel wit Phase displaced exc1ting currents from the master oscillator und in causing them to act u on a. common anode circuit said anbde or p ate circuit, being tuned in tl1e case of parallel tubes to the n-fold fr uency, instead of 110 the excitin frequency.
  • the co'mmon platze circuit would be tuned to a frequency three times the frequency of theexciting currents from the master 0scil- 'ing a triode vacuum tube 2 e simplest case later.
  • the three tubes used deliver in each excitation period three successive D. C. impulses to the common oscillat'ory circuit.
  • anal t-o s'o adjust it to such a value that the eriod during which the plate current is owing will not be longer than the duration of a quarter-period of the triple frequency compared with the exciting oscillation.
  • the single figure is a diagrammatic representation of c'ircuits and apparatus embodyin my invention.
  • a master oscillator 1 comprishaving filament heat ing means 3, a plate current generator 4 and a local re sonant circuit consisting of an inductance 5 and a capacitance 6.
  • a phase splitter 7 is provided and supplied from coil 8 in inductive relation to the coil 5 and delivering phase displaced energy to the primary coils of the high frequency transformers 9, 11, and 12.
  • a multi lying amplifier 14 is rovided consisting 0 trio e, Power ampli%ving tubes 15, 16, and 17 the filaments of which am energized by a current source 18, the plate circuits of which are energized by current source 19.
  • the respective grids are energized by the secondaries of the respective transformers 9, 11, and 12 and the gr1ds are suitably biased electrically by a gmd potential source 21.
  • a reas0nant circu1t comprising an inductance 22 and a capacitance 23 is provided and connected in the lead between the parallel connection to the plates of the respective triodes 14, 15 and 16 and the generator 19.
  • a reson&nt radiating circuit' 24 is provided und suitably coupled to the local resonant circuit.
  • the resonant circuit comprising the inductance 5 and the capacitance 6 may then be tuned to a. frequency that to which the resonant circuit comprising the inductan'ce 22 and capacitance 23 is tuned. This ratio is determined by the numberof phases produced by the phase splitter 7.
  • the local master oscillator 1 may be set to geherate at any convenierit frequenc'j and may be keyed (not shown) Its output is then supplied to the Phase splitter 7 Which in the instance given produces three separate currents having the same frequency as the input but displaced in phase relationrent causes pulses of current to ship by 120 electrical degrees.
  • the successive positive half cycles cf these three phase outputs are then supplied to the grids of the triodes 15, 16, and 17.
  • the grid bias source 21 is adjustiad to supply such a negative potential to the grids that the peak only of each positive half cy ':le brings them to such a positive potential as to perm1t current to flow.
  • triple frequency arrange-- ment described in illustration be adhe1 ed to, but any desired ratio may be substituted, therefore'.
  • a radio frequency master oscillmtor In combination, a radio frequency master oscillmtor, a pha.se splitten coupled to seid oscillator, a. plurality of amplifiers coupled and biased for-sharpcut efi and a. resonant circuit tuned to a irethree time the frequency of;
  • the method of generating high radio frequecies which comprises enerating a subfrequency, splitting seid su -frequency into a. plurality of phases, separately amplifying an'd shortening successive sive positive pulses of' each of thephases, andt':o;ubining all of said amplified and shorteneld pulses in's common resonant circuittun6d to the desired frequency multiple.
  • a thermionie enerator a hase splitter supplied therebgt 01 tr'ansforming single phase to three p as amplifiers assoc1ated with said hase splitter, rid bias means for said amplifiers of such magnitude that cu'rrent flows in the amplifier tubes during a. period less than one twelfth of the peripd-of the master oscillator, and a reso1iant circuit tuned to a three-fold multiple ofthe generator frequency coupled to the amplifier tubes.
  • a. thermionic radio frequency master ostsillator a. phase splitter associated therewit a plurahty o f triode amcoupled to the output circuits splitter, grid bias means for oi seid phase gnitude that curseid amplifiers of such m a rent flows a small portion of the period cfthe master oscillator, und a circu it tuned to a multip of the master oscillator frequency coup tothe amplifiers.
  • a thermionic radio frequency masber oscillator having an input and a. plurality of output circuits, means for connecting said .input circuit 150 said oscillator, a plurality of triode tubes having input and output elements, means for connecting each 0:E said input elements to' a respective one of the output circuits of said phase s fitter, a.nd amoutput tipleof the master oscillator freq uency coupled to the output elements of sa1d triodes in parallel relation.
  • a thermionic radio frev quency master oscillator a hase splitter connected thereto supplied therefrom, a. plurality of amplifiers each connected to an out put circuit of said Phase splitter, an output circuit for said amp ifiers tuned to a multiple of the master oscillator frequency connecb ing said triodes in parallel relation, und an oscillation radiator coupled to said output circuit.

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  • Amplifiers (AREA)
  • Transmitters (AREA)
US70729A 1924-12-06 1925-11-23 Radio transmitting system Expired - Lifetime US1744711A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE244121T 1924-12-06

Publications (1)

Publication Number Publication Date
US1744711A true US1744711A (en) 1930-01-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US70729A Expired - Lifetime US1744711A (en) 1924-12-06 1925-11-23 Radio transmitting system

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Country Link
US (1) US1744711A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB244121A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513910A (en) * 1945-03-28 1950-07-04 Rca Corp Multiplex telegraph system
US2618772A (en) * 1949-01-19 1952-11-18 Sorensen & Company Inc Three-phase constant frequency electronic power supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513910A (en) * 1945-03-28 1950-07-04 Rca Corp Multiplex telegraph system
US2618772A (en) * 1949-01-19 1952-11-18 Sorensen & Company Inc Three-phase constant frequency electronic power supply

Also Published As

Publication number Publication date
GB244121A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1926-11-04

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