US2454784A - High-frequency power supply to multiple loads - Google Patents

High-frequency power supply to multiple loads Download PDF

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Publication number
US2454784A
US2454784A US528552A US52855244A US2454784A US 2454784 A US2454784 A US 2454784A US 528552 A US528552 A US 528552A US 52855244 A US52855244 A US 52855244A US 2454784 A US2454784 A US 2454784A
Authority
US
United States
Prior art keywords
circuit
power
circuits
inductance
power supply
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
US528552A
Other languages
English (en)
Inventor
James S Engel
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.)
STC PLC
Federal Telephone and Radio Corp
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE459544D priority Critical patent/BE459544A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US528552A priority patent/US2454784A/en
Priority to GB682/45A priority patent/GB584595A/en
Priority to FR911871D priority patent/FR911871A/fr
Application granted granted Critical
Publication of US2454784A publication Critical patent/US2454784A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
    • H03H7/487—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source particularly adapted as coupling circuit between transmitters and antennas

Definitions

  • This invention relates to high frequency apparatus and has for its principal object to provide circuits ior supplying multiple high frequency power loads from a singlesource of poweri Another object of the invention is to provide circuits for feeding a plurality of loads from a balanced high frequency circuit without disturbing the balance of the circuit.
  • Still another object of the invention is to provide a circuit for feeding load circuits from a balanced high frequency supply circuit in which the amount of power absorbed by the various load circuits may be adjusted without disturbing the balance of the balanced supply circuit.
  • Still another object of the invention is to provide a circuit for removing power from a link
  • a high frequency supply circuit l which is of the push-pull type is shown with an output circuit 2 comprising a conducting loop which is con-- nected to the plates of two output tubes, as represented at 3 and 4.
  • a conducting link 5 is shown inductively coupled to the loop 2 and is in turn inductively coupled to a loop 6 which is the input circuit of an output amplifier 1', the loop being attached to the grids of the input tubes which are indicated at 8 and 9.
  • the amplifier 1 may have its output connected to an antenna or other load circuit.
  • a conductive link It! is inductively coupled to the link 5 and also to an inductance a dual-section condenser l2, thus forming a high impedance tuned circuit.
  • the condenser l2 has two sets of stator plates, one being connected to one end of the inductance I l and the other being connected to the other end of the inductance, and a plurality of rotor plates which cooperate capacil I across which is connected tivelywith the stator plates.
  • the rotor plates are connected to ground so that the tuned circuit ll'-l2 is balanced with respect to ground.
  • This type of dual-section condenser is well known in the art.
  • a low impedance circuit comprising an inductance l3 and variable condenser M in series with the inductance is connected between ground and one side of the high impedance circuit ll--l2, the connection being made to the junction between one end of the inductance H and one set of stator plates inthe condenser 12.
  • Another low impedance circuit comprising an inductance l5 and a variablecondenser l6 connected in series with the inductance is connected between ground and the other side of the high impedance circuit l
  • An inductance I! may be coupled to the inductance l3 and is connected between ground and the central conductor of a coaxial transmission line I8, the outside conductor of which is connected to ground.
  • an inductance I9 is coupled to the inductance l5 and is connected between ground and the central conductorof a coaxial line 20, the outer conductor of which is connected to ground.
  • the circuits including the inductan-ces l1 and I9 are untuned and the transmission lines 18 and 20 lead to any desirable lo-ad circuits.
  • the high impedance circuit H--l2 is tuned to the frequency of the power being transmitted between the power source I and the amplifier 1. Power will then be supplied to the high impedance circuit H-l2 through the coupling link In. Because of the balanced condition of the high impedance circuit H--l2 the balance of the power source i will not be disturbed, and because of the difference in impedance between the circuit ll-l2 and the low impedance circuits l3--l4 and 15-46, power can be supplied to these latter circuits without unbalancing the high impedance circuit ll-l2. The low impedance circuits
  • 3-l4 and i5-.-l6 will then deliver power to the inductances l1 and I9, respectively, and thus to the transmission lines l8 and 20, respectively.
  • each transmission line will depend on the setting of the condensers l4 and I6. These may be adjusted so that equal amounts of power may be removed by the two transmission lines, or it is possible to adjust these condensers so that very little or sub-.
  • the circuit of the invention forms a convenient method of delivering power from a single balanced source to two or three separate load circuits.
  • the diagram shows three separate load circuits, but it will be-ev'ident that the amplifier- 1 and input loop 6 might be eliminated, in which case the power would be delivered through the transmission lines l8 and 20 in any desired pro-- portions depending on densers l4 and I6.
  • a high frequency circuit comprising'a source of high frequency power having abalanced out?- the adjustmentof the con-- put circuit, a high impedance circuit tuned to the frequency of said source, means coupling: said high impedance circuit to said balanced. output circuit in such manner as to maintain the latter in balance, means to balance said high, impedance circuit with respect to ground, a pair of low impedance circuits, one connected between one side of said high impedance circuit and ground and the other'connected between the other side and ground, and a pair of output circuits, one coupled to each of said low impedance circuits.

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)
  • Microwave Amplifiers (AREA)
US528552A 1944-03-29 1944-03-29 High-frequency power supply to multiple loads Expired - Lifetime US2454784A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE459544D BE459544A (enrdf_load_stackoverflow) 1944-03-29
US528552A US2454784A (en) 1944-03-29 1944-03-29 High-frequency power supply to multiple loads
GB682/45A GB584595A (en) 1944-03-29 1945-01-08 A high frequency coupling circuit for supplying multiple loads
FR911871D FR911871A (fr) 1944-03-29 1945-06-29 Alimentation de puissance haute fréquence à des charges multiples

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US528552A US2454784A (en) 1944-03-29 1944-03-29 High-frequency power supply to multiple loads

Publications (1)

Publication Number Publication Date
US2454784A true US2454784A (en) 1948-11-30

Family

ID=24106154

Family Applications (1)

Application Number Title Priority Date Filing Date
US528552A Expired - Lifetime US2454784A (en) 1944-03-29 1944-03-29 High-frequency power supply to multiple loads

Country Status (4)

Country Link
US (1) US2454784A (enrdf_load_stackoverflow)
BE (1) BE459544A (enrdf_load_stackoverflow)
FR (1) FR911871A (enrdf_load_stackoverflow)
GB (1) GB584595A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555809A (en) * 1983-10-26 1985-11-26 Rca Corporation R.F. Diplexing and multiplexing means

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272452A (en) * 1941-05-08 1942-02-10 Bell Telephone Labor Inc Transformer
US2359618A (en) * 1939-03-22 1944-10-03 Standard Telephones Cables Ltd Short-wave amplifier
US2370724A (en) * 1940-10-18 1945-03-06 Nat Company Inc Electric system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359618A (en) * 1939-03-22 1944-10-03 Standard Telephones Cables Ltd Short-wave amplifier
US2370724A (en) * 1940-10-18 1945-03-06 Nat Company Inc Electric system
US2272452A (en) * 1941-05-08 1942-02-10 Bell Telephone Labor Inc Transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555809A (en) * 1983-10-26 1985-11-26 Rca Corporation R.F. Diplexing and multiplexing means

Also Published As

Publication number Publication date
BE459544A (enrdf_load_stackoverflow)
GB584595A (en) 1947-01-17
FR911871A (fr) 1946-07-23

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