US2549992A - Amplifying system for ultra high frequencies - Google Patents

Amplifying system for ultra high frequencies Download PDF

Info

Publication number
US2549992A
US2549992A US666245A US66624546A US2549992A US 2549992 A US2549992 A US 2549992A US 666245 A US666245 A US 666245A US 66624546 A US66624546 A US 66624546A US 2549992 A US2549992 A US 2549992A
Authority
US
United States
Prior art keywords
cathode
input
inductance
impedance
high frequencies
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
US666245A
Other languages
English (en)
Inventor
Strutt Maximiliaan Julius Otto
Ziel Aldert Van Der
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.)
Hartford National Bank and Trust Co
Original Assignee
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
Application granted granted Critical
Publication of US2549992A publication Critical patent/US2549992A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
    • H01J43/025—Circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/10—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of amplifying elements with multiple electrode connections
    • 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

Definitions

  • FIG. 2 AMPLIFYING SYSTEM FOR ULTRA HIGH FREQUENCIES Filed May 1, 1946 FIGJ FIG. 2
  • the above-mentioned U. S. Patent suggests means for compensating in an amplifying" system of the above-mentioned kind the electron damping which occurs between the input electrode and the cathode so that the resulting input damping of the discharge tube is almost zero or negative. More particularly, it is suggested that at least one of the capacities existing between the input electrode and the cathode and between the input electrode and the connection between the cathode and the output impedance is increased. Furthermore, the inductance between the ends of the cathode and their connection to the input and output circuits are also increased. The amount of additional capacitance and inductance so added is determined by the degree of compensation of the input damping to be effected.
  • the desired increase of the inductances can be obtained, at least partly, by increasing the length of the cathode supply conductors in question. It is as a rule impossible to determine beforehand sufiiciently exactly the length of the supply conductors which is required for the purpose. Moreover, upon mounting the components changes occur in the desired length and location of the connecting conductors which bring about corresponding changes in the inductance value.
  • the present invention has for its object to provide a simple method by means of which the adjustment of the effective inductances may be effected without the above-mentioned inconveniences.
  • the additional inductances incorporated in at least one of the cathode supply conductors are made larger than is necessary for the desired re-generating effect and between the two cathode supply conductors there is provided a coupling which reduces the effective inductances to such a value that the desired regenerating effect on the input circuit is obtained. It is preferred to provide a coupling which has, at least substantially, an inductive character.
  • Figure 1 is a schematic diagram illustrating one embodiment of the invention
  • Fig. 2 is a schematic diagram illustrating another embodiment of the invention.
  • Fig. 3 is a schematic diagram illustrating a further embodiment of the invention.
  • Fig. 1 represents an amplifying system which comprises an amplifying tube I having a cathode 2, a control grid 3 and an anode I. Additional electrodes 5 and 6 may be present between the control grid 3 and the anode I.
  • the cathode 2 is provided with two separated supply conductors which terminate outsidethe tube in points A and B respectively. In at least one of the supply conductors there is incorporated an additional inductance, the total self-inductions of the conductors being denoted by LI and L2.
  • LI and L2 Between the control grid 3 and the cathode 2 is provided an input impedance [9 which is connected, through the intermediary of the conductor L1, to the cathode.
  • an output impedance 20 which is connected to the cathode through the intermediary of the conductor L2. It is assumed that the additional inductance incorporated in at least one of the supply conductors is embodied in the tube 1.
  • the additional inductance provided in at least one of the cathode supply conductors is made larger than is necessary for the desired re-generating effect whilst the points A and B are interconnected through V the intermediary of an adjustable impedance L3.
  • the inductances of the two cathode supply conductors are partly bridged by this impedance so that the effect thereof is decreased as the impedvalues of L3 the correct re-generating effect may be adjusted after the mounting of the components has once taken place.
  • the desired adjustment may also be obtained in the manner shown in Fig. 2.
  • This figure represents one embodiment of the invention wherein the impedance L3 has a fixed value.
  • points C and D at which this impedance is connected to that end of the input impedance which is remotefrom the input electrode and to that end of the output impedance which is remote from the output electrode are, however, adjustable. By displacing the points C and D relatively to one another, the currents of the input and output circuits are kept separated more or less, a greater or smaller re-generating effect being thus obtained.
  • the impedance L3 is formed as aninductance in order to retain the inductive character of the supply conductors and thus to obtain a re-generating effect which is independent of frequency.
  • a circuit arrangement for the amplification of high frequencies comprising an electron discharge tube provided with a cathode having two external terminalsa signal input grid and an anode, the cathode having leads comprising inductance elements connected to each of its external terminals, input and output circuits connect- By varying the ed respectively to the input grid and to the anode, one of said inductance elements having an inductance value larger than is necessary to produce a desired regenerative effect on the input circuit of said tube, an inductance component "connected between said cathode terminals, said external terminals, 2.
  • the cathode having leads comprisinginductance elements connected to each of its external terminals, one of said inductance elements having an inductance value larger than is necessary to produce a desired regenerative effect on the input circuit of said tube, input and output circuits connected respectively to the input grid and to the anode, the grid return of the input circuit and the anode return of the output circuit being connected together by means of an inductance component having a tapping and an adjustable tapping thereon to provide an inductance value at which the desired regeneration efiect is produced, and means to connect said cathode terminals to said tappings.
  • a circuit arrangement for the amplification of high frequencies comprising an electron discharge tube provided with a cathode having two external terminals, a signal input grid and an anode, the cathode having leads comprising inductance elements connectedto each of its external terminals, input and output circuits connected respectively to the input grid and to the anode, the grid return of the input circuit being connected to one of the cathode terminals, the anode return of the output circuit being connected to the other cathode terminal, one of said inductance elements having an inductance value exceeding the value necessary to produce a pre-- determined regenerative effect, and a variable inductance coupling said one inductance element to the other element and having a value produc ing the predetermined regenerative effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)
US666245A 1941-07-31 1946-05-01 Amplifying system for ultra high frequencies Expired - Lifetime US2549992A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL231437X 1941-07-31
CH217640T 1942-07-30

Publications (1)

Publication Number Publication Date
US2549992A true US2549992A (en) 1951-04-24

Family

ID=25726049

Family Applications (1)

Application Number Title Priority Date Filing Date
US666245A Expired - Lifetime US2549992A (en) 1941-07-31 1946-05-01 Amplifying system for ultra high frequencies

Country Status (5)

Country Link
US (1) US2549992A (fr)
CH (1) CH231437A (fr)
DE (1) DE932505C (fr)
FR (2) FR868519A (fr)
GB (1) GB609543A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650298A (en) * 1951-03-29 1953-08-25 Standard Coil Prod Co Inc Television booster circuits
US2913539A (en) * 1953-10-02 1959-11-17 Rca Corp Wide band signal amplifier circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1830164A (en) * 1926-02-11 1931-11-03 Rca Corp Circuit arrangement for high frequency currents
US2247442A (en) * 1939-07-29 1941-07-01 Western Electric Co Neutralizing arrangement for amplifiers
US2256293A (en) * 1939-11-30 1941-09-16 Rca Corp High frequency electron discharge device
US2314958A (en) * 1939-07-25 1943-03-30 Ziel Aldert Van Der High frequency amplifier circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1830164A (en) * 1926-02-11 1931-11-03 Rca Corp Circuit arrangement for high frequency currents
US2314958A (en) * 1939-07-25 1943-03-30 Ziel Aldert Van Der High frequency amplifier circuit
US2247442A (en) * 1939-07-29 1941-07-01 Western Electric Co Neutralizing arrangement for amplifiers
US2256293A (en) * 1939-11-30 1941-09-16 Rca Corp High frequency electron discharge device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650298A (en) * 1951-03-29 1953-08-25 Standard Coil Prod Co Inc Television booster circuits
US2913539A (en) * 1953-10-02 1959-11-17 Rca Corp Wide band signal amplifier circuit

Also Published As

Publication number Publication date
DE932505C (de) 1955-09-01
GB609543A (en) 1948-10-04
FR52233E (fr) 1943-10-05
CH231437A (de) 1944-03-15
FR868519A (fr) 1942-01-05

Similar Documents

Publication Publication Date Title
US2317025A (en) Volume control circuit
US2555906A (en) Tunable amplifier having a predetermined band-pass characteristic throughout its range
US2323634A (en) Low frequency amplifier
US2272235A (en) Electron tube amplifier
US2106793A (en) Filter including space discharge device
US2549992A (en) Amplifying system for ultra high frequencies
US2208665A (en) Amplifier circuits with controlled gain
US2235019A (en) Temperature compensating device
US2276873A (en) Variable frequency coupling
US2444864A (en) High-frequency tuned amplifying circuit
US2247442A (en) Neutralizing arrangement for amplifiers
US2143864A (en) Wide range beat frequency generator
US2127334A (en) Electronically coupled regenerative amplifiers
US2373184A (en) Ultra high frequency vacuum tube circuit
US2253381A (en) Harmonic reduction circuits
US2360794A (en) Regeneration stabilization circuit
US2335050A (en) Electron discharge amplifier
US2269654A (en) Video amplifier
US1846597A (en) Radio circuit and method of operating same
US1821076A (en) Amplifying system
US1968104A (en) Amplifying system
US1867746A (en) Apparatus for amplifying electric oscillations
US2211718A (en) Ultra-high-frequency signaltranslating stage
US2137265A (en) Circuit for suppressing disturbance waves and upper harmonics
US2401939A (en) Aperiodic phase inverter