US2475064A - Ultra high frequency mixer circuit - Google Patents

Ultra high frequency mixer circuit Download PDF

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Publication number
US2475064A
US2475064A US728144A US72814447A US2475064A US 2475064 A US2475064 A US 2475064A US 728144 A US728144 A US 728144A US 72814447 A US72814447 A US 72814447A US 2475064 A US2475064 A US 2475064A
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US
United States
Prior art keywords
circuit
oscillations
high frequency
frequency
local
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
US728144A
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English (en)
Inventor
Adelbert Van Weel
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Hartford National Bank and Trust Co
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Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
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Publication of US2475064A publication Critical patent/US2475064A/en
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1408—Balanced arrangements with diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1416—Balanced arrangements with discharge tubes having more than two electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication

Definitions

  • VAN WEEL INVE NTO R MM7 'ACENT J oscillatory circuit 2, 2 as well as of the said in-phase circuit may be reduced, provided that the said impedances are adjusted to a correct" va1ue.
  • This feed-back coupling may be enhanced te such extent that there are predued either escillations of a frequency corresponding te the frequency te which the push-pull oscillatory cir" cuit is tuned and which oscillations may be transmitted directly by the receiving aerial l l, er oscillations whose frequency corresponds te the frequency te which the in-phase circuit mentiened before is tuned and. which osciilations thereforemay be used as the local oscillatiens in the reception.
  • one or more of the ieed-back impedances may adventageeusly be made inoperative by short-circuitingeras an alternative damping resistances may be includedin one of the circuits, (push-pull circuit, in-phase circuit), the construction being such thatthe preductien of either iecal oscillatiens er oscillations te be transmitted is aveided.
  • the frequency of the oscillations te be transmitted and the frequency of the local oscillatiens are both established by theuse efthe box circuit E3 which has beenmentiened before.
  • This box circuit comprises two inner cenductors I and 18' arranged symmetricaliy, tegether with four adjustable cencentrated capacities H, 12', 12' and E3.
  • the box circuit has twe tunings, viz, one as the pushpulicircuit andthe ether as the in-phase circuit. By regulating the capacity 1 l it is possible to vary the frequency of the push-pull circuit,
  • the frequency of the in-phase circuit may be adjusted by regulating thecapacity l3.
  • the anedes of the mixing systems are cennected te the box circuit in points A and A, the extent te which the mixing systems are coup1ed te the boxcircuit being in the first piace dependent en the p1aces of the points A'- and A and further on the values of the impedances 5, 8 and 8. Since, as a rule, the piaces of the points A' and. A are fixed once or 2111, the adjustment of the ceupling is effected solely with the aid of the said impedances.
  • the impedance 5 is given a capacitative value, only the coupling fer the in-phase oscillation becemes 1ess streng and hence the stabilisatien becomes better (with an inductive value of the irnpedance 5 theceupling.becomes strenger, etc.).
  • the extent of stabilisation of the two kinds of oscillation may therefore be fully controlled by a suitable choice of the three said impedances.
  • Fig. 2 shows a circuit arrangement fer receiving electrical ultrahigh-frequency oscillatiens in which in a similar manner use is made of a box circuit as in the circuit shewn in Fig. 1.
  • the box circuit is used te improve the selectivity of the push-pull input circuit.
  • the dipole aerial I, I is cennected in points B and B" to the inner conducters H3, H1 of the box circuit, whereas the control grids of the mixing triodes 3, 3 are cennected in peints C and C te the said nner cenductors.
  • the local oscillatiens are produced by the circuit itselfandthis owing te the backcoupling by means oianinductance 0011 Hi cated between the junction of the two cathedes and the junction of twecendensers and 15' interpesed betweenthe anedes of the mixing systems 3 and 3.
  • the frequency of the local osciliations is nowstabilised in a similar manner as in the circuit of Fig, 1, evenif the box circuit 9 is iocated between the corl grids and the cathodes and not between the anodes and the cen trol grids of the mixing triodes.
  • the aerial te be cennected, threugh small ca pacities, te the contro1 grids of the two tubes.
  • the box circuit may alternatively be arranged between the anodes asinthe circuits shown in Fig. 1.
  • use is preferably made of a circuit arrangement of the kind shewn in Figu1e 2.
  • a mixing circuit for combining lecal oscii- 1atiens with high: frequency esciilations comprising a pair of electron discharge tubes having first and-second input electredes and an output electrode, ene pair of corresponding input electredes being interconnected, an.input circuit cennected between the other..pair of corresponding electredes fer applying:the high frequency osciliatiens thereto in push-pull relation, an auxiliary circuit cennected between said interconnection and the electrical centerofsaidinput circuit fer applying 1ocal escillations tosaid.other pair of cerresponding electredes te cephasal relation, an
  • said stabilizing means including an enclesedt tubular outer conductor, a pair of symmetrically disposed inner conducters cennected te one end ef said outer conductor, said outer conductor being cennected te an intermediate point in said auxiliary circuit, means cennecting said inner "cenducters 1espectively te the anedes of said tubes, a capacitance between said inner conductors having a value eiecting resenance at thefrequency of said high frequency escillations and a capacitance between said inner conductorsandsaid outer conductorhaving a. va1ue eiecting resonance at the frequency of-1ocal oscillations.
  • said capacitance betweensaid inner conductor and said outer conductor is constituted by a pair of series-connected capacitors connected between the free ends of said inner conductors, and a capacitor connected between said outer conductor and the juncture of said series-connected capacitors.
  • a mixing circuit for combning local cscillations with high frequency oscillations to produce intermediate frequency oscillations comprising a pair of. electron discharge tubes each having a cathode, a grid and. an anode, means interconnecting said grids, a resonant input circuit tuned to the high frequencies osciilations and connected between the cathodes of said tubes for applying said oscillations thereto in push-pull relation, a first impedance connected between the electrcal center of said input circuit and.
  • a transceiver system for mxing local oscillations with high frequency oscillations to produce intermediate frequency oscillations and for transmitting high frequency oscillations, said system comprising a pair of e1ectron dis-charge tubes each having a cathode, a grid and an anode, means interconnecting said grids, a resonant input circuit tuned to the high frequencies oscil1ations and connected between the cathodes of said tubes for applyng said oscillations thereto in push-pull relation, a first impedance connected between the electrical center of said input circuit and. ground, a second impedance connected between said interconnection and ground, said first and.
  • second impedances in combination with said input circuit being tuned to the frequency of the local oscillations for applying same to said tubes in cophasal re1ation, an output circuit connected between said anodes for derivng the intermediate requency oscillations therefrom, means to stabilize the mixing circuit for said local and high frequency oscillations including an enclosed tubular outer conductor, a pair of symmetrically disposed inner conductors connected to one end of said outer conductor, said outer conductor being connected to ground, means connecting said inner conductors respectively to the anodes of said tubes, a capacitance between said inner conductors having a value effecting resonance at the frequency of said high frequency oscillations and a capacitance between said inner conductors and said outer conductor having a va1ue effecting resonance at the freequency of said local oscillations, said second impedance having a va1ue eiecting positive feedback or said local oscillations to reduce the dampng of the cophasal circuit, and. a pair of impedance elements each interposed between

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Transmitters (AREA)
US728144A 1944-08-08 1947-02-12 Ultra high frequency mixer circuit Expired - Lifetime US2475064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL643671X 1944-08-08

Publications (1)

Publication Number Publication Date
US2475064A true US2475064A (en) 1949-07-05

Family

ID=19791848

Family Applications (1)

Application Number Title Priority Date Filing Date
US728144A Expired - Lifetime US2475064A (en) 1944-08-08 1947-02-12 Ultra high frequency mixer circuit

Country Status (6)

Country Link
US (1) US2475064A (xx)
BE (1) BE467878A (xx)
DE (1) DE807400C (xx)
FR (1) FR942905A (xx)
GB (1) GB643671A (xx)
NL (1) NL69394C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505670A (en) * 1947-11-28 1950-04-25 Raytheon Mfg Co Transceiver for multichannel radio communication systems
US4348773A (en) * 1980-01-15 1982-09-07 Ignazio Caroli Microwave receiver converters having a hybrid waveguide structure

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968610A (en) * 1931-03-23 1934-07-31 Rca Corp Thermionic amplifying system
US2107387A (en) * 1934-10-04 1938-02-08 American Telephone & Telegraph Vacuum tube with tank circuits
US2107395A (en) * 1933-12-13 1938-02-08 Schlesinger Kurt Radio receiving system
US2125969A (en) * 1935-08-29 1938-08-09 Rca Corp Ultrahigh frequency oscillator
US2128422A (en) * 1933-01-26 1938-08-30 Rca Corp Ultrashort wave circuit
US2250096A (en) * 1939-07-05 1941-07-22 Telefunken Gmbh Resonant system for ultra short waves
US2374810A (en) * 1939-12-22 1945-05-01 Int Standard Electric Corp Electron discharge apparatus
US2406371A (en) * 1938-07-08 1946-08-27 Univ Leland Stanford Junior Object detecting apparatus and method
US2441452A (en) * 1941-01-31 1948-05-11 Hartford Nat Bank & Trust Co Frequency changing circuits

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968610A (en) * 1931-03-23 1934-07-31 Rca Corp Thermionic amplifying system
US2128422A (en) * 1933-01-26 1938-08-30 Rca Corp Ultrashort wave circuit
US2107395A (en) * 1933-12-13 1938-02-08 Schlesinger Kurt Radio receiving system
US2107387A (en) * 1934-10-04 1938-02-08 American Telephone & Telegraph Vacuum tube with tank circuits
US2125969A (en) * 1935-08-29 1938-08-09 Rca Corp Ultrahigh frequency oscillator
US2406371A (en) * 1938-07-08 1946-08-27 Univ Leland Stanford Junior Object detecting apparatus and method
US2250096A (en) * 1939-07-05 1941-07-22 Telefunken Gmbh Resonant system for ultra short waves
US2374810A (en) * 1939-12-22 1945-05-01 Int Standard Electric Corp Electron discharge apparatus
US2441452A (en) * 1941-01-31 1948-05-11 Hartford Nat Bank & Trust Co Frequency changing circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505670A (en) * 1947-11-28 1950-04-25 Raytheon Mfg Co Transceiver for multichannel radio communication systems
US4348773A (en) * 1980-01-15 1982-09-07 Ignazio Caroli Microwave receiver converters having a hybrid waveguide structure

Also Published As

Publication number Publication date
BE467878A (xx)
FR942905A (fr) 1949-02-22
NL69394C (xx)
DE807400C (de) 1951-06-28
GB643671A (en) 1950-09-27

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