US2067536A - Regenerative receiver arrangement - Google Patents

Regenerative receiver arrangement Download PDF

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Publication number
US2067536A
US2067536A US723815A US72381534A US2067536A US 2067536 A US2067536 A US 2067536A US 723815 A US723815 A US 723815A US 72381534 A US72381534 A US 72381534A US 2067536 A US2067536 A US 2067536A
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United States
Prior art keywords
circuit
grid
tuned
intermediate frequency
frequency
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Expired - Lifetime
Application number
US723815A
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English (en)
Inventor
Klotz Ernst
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
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Telefunken AG
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Filing date
Publication date
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Publication of US2067536A publication Critical patent/US2067536A/en
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    • 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

Definitions

  • An object of this invention is a regeneratively coupled receiver apparatus, and the chief purpose thereof is to insure constant and stable coupling relations throughout the entire range of setting.
  • a second object of the invention is to provide a high degree of intermediate frequency amplification without the use of several amplifyingstages.
  • the compensation of attenuation (or gain) is insured in the intermediate frequency circuits in this manner that the second detector tube is of the regenerative rectifier type.
  • the mixer tube could be employed at the same time for insuring de-attenuation of the intermediate frequency coupling circuit, and for this purpose hexode tubes would be particularly suited.
  • FIG. 1 the antenna circuit A is inductively coupled to circuit E comprising secondary coil Iii tuned to the incoming signal frequency by a condenser ll whose terminals are connected to the cathode I2 and signal control grid 13 of the oscillator detector tube M.
  • An outer grid It is connected to a suitable source of potential through the transformer secondary coil H which is tuned to the desired local oscillation frequency by condenser l8.
  • the outer section of the tube including the plate and grid I4 is caused to oscillate by inductively coupling a primary coil H5 in the plate circuit l5 of the tube with secondary 11.
  • a circuit Z comprising transformer secondary coil H!
  • condenser 20 which is tuned to the desired intermediate frequency by condenser 20.
  • One side of condenser is conductively connected to cathode 22 of the rectifier or detector tube G while the other. side is connected to the control grid 23 through the grid leak condenser 2
  • a tickler coil 25 which is included in the plate circuit E i of tube G and is in inductive coupling with coil I9.
  • the audio frequency output of the receiver may be impressed on a sound reproducer 29 by means of an audio transformer T including primary 26 and secondary 28, the coil 26 being shunted by a condenser 21 which serves to by-pass the intermediate frequency currents.
  • a hexode oscillator-detector tube such a tube and circuit arrangement is shown in Fig. 2 in which the antenna circuit is connected to the circuit E tuned to the signal frequency in the same manner as shown in Fig. 1.
  • the second grid 30 serves as a screen grid to screen the signal grid 13 from the oscillator grid 3
  • a circuit Z also tuned to the intermediate frequency and comprising secondary coil 38 and condenser 40 may be connected to the input terminals of a tube d3 which may function as a second detector as in Fig. 1.
  • Coil 38 may be inductively coupled to coil 36 as is the coil 31, thereby providing regeneration of the currents in the tuned circuits Z and Z since current of the intermediate frequency in coils 31 and 38 causes the potential of grid 32 to fluctuate at this frequency, thereby further increasing the intermediate frequency current in the plate circuit l5.
  • a radio receiver the combination of a vacuum tube having a cathode, a signal control grid, an oscillator grid, a plate and a third grid located between said oscillator grid and said plate, a circuit tuned to the signal frequency connected between said cathode and signal control grid, a circuit tuned to an oscillation frequency differing from said signal frequency by a desired intermediate frequency connected to said oscillator grid, a circuit directly connected to said plate and tuned to the intermediate frequency, a source of positive potential connected to the low potential end of said last named circuit, and a circuit connected to said third grid and comprising a feedback coupling to said circuit tuned to the oscillation frequency and also a second feedback coupling to the circuit tuned to the intermediate frequency.
  • an electron discharge tube having a cathode, a plate and a signal control grid, a screen grid, an oscillator grid and an additional grid located between said cathode and plate in the order named, a circuit tunable to the radio signal frequency connected between said cathode and signal control grid, means for maintaining said screen grid at a steady potential, a circuit tuned to an oscillation frequency differing from said signal frequency by an intermediate frequency substantially lower than said signal frequency connected to said oscillator grid, a circuit connected to said additional grid and comprising two coils connected in series, a feedback connection between one of said coils and the circuit tuned to the oscillation frequency, a circuit connected at one end to said plate and at its other end to a source of positive potential and comprising a coil and condenser tuned to the intermediate frequency and a feedback connection between said last named coil and the other of said first named coils.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
US723815A 1933-05-23 1934-05-04 Regenerative receiver arrangement Expired - Lifetime US2067536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE422029X 1933-05-23

Publications (1)

Publication Number Publication Date
US2067536A true US2067536A (en) 1937-01-12

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ID=6461491

Family Applications (1)

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US723815A Expired - Lifetime US2067536A (en) 1933-05-23 1934-05-04 Regenerative receiver arrangement

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US (1) US2067536A (xx)
BE (1) BE403264A (xx)
GB (1) GB422029A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516887A (en) * 1943-10-30 1950-08-01 Int Standard Electric Corp Ultra high frequency radio receiver
US2570016A (en) * 1947-03-29 1951-10-02 Hartford Nat Bank & Trust Co Superheterodyne receiving circuit arrangement
US2609460A (en) * 1946-06-22 1952-09-02 Hazeltine Research Inc Tunable constant band-width signal-translating stage
US2616036A (en) * 1948-12-29 1952-10-28 Zenith Radio Corp Signal translating apparatus
US2616035A (en) * 1948-12-30 1952-10-28 Zenith Radio Corp Radio receiver employing a single tube amplifier-converter
US2795761A (en) * 1952-02-14 1957-06-11 Philco Corp Modulator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516887A (en) * 1943-10-30 1950-08-01 Int Standard Electric Corp Ultra high frequency radio receiver
US2609460A (en) * 1946-06-22 1952-09-02 Hazeltine Research Inc Tunable constant band-width signal-translating stage
US2570016A (en) * 1947-03-29 1951-10-02 Hartford Nat Bank & Trust Co Superheterodyne receiving circuit arrangement
US2616036A (en) * 1948-12-29 1952-10-28 Zenith Radio Corp Signal translating apparatus
US2616035A (en) * 1948-12-30 1952-10-28 Zenith Radio Corp Radio receiver employing a single tube amplifier-converter
US2795761A (en) * 1952-02-14 1957-06-11 Philco Corp Modulator

Also Published As

Publication number Publication date
GB422029A (en) 1935-01-03
BE403264A (xx)

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