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US2457123A - Coupling arrangement - Google Patents

Coupling arrangement Download PDF

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Publication number
US2457123A
US2457123A US500076A US50007643A US2457123A US 2457123 A US2457123 A US 2457123A US 500076 A US500076 A US 500076A US 50007643 A US50007643 A US 50007643A US 2457123 A US2457123 A US 2457123A
Authority
US
United States
Prior art keywords
coupling
receivers
impedance
transmission
grid
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
US500076A
Other languages
English (en)
Inventor
Henri G Busignies
Trevor H Clark
Arbor G Everhart
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 BE476848D priority Critical patent/BE476848A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US500076A priority patent/US2457123A/en
Priority to FR952689D priority patent/FR952689A/fr
Priority to ES0179899A priority patent/ES179899A1/es
Application granted granted Critical
Publication of US2457123A publication Critical patent/US2457123A/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
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/34—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source
    • H03H11/346—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source particularly adapted as input circuit for receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04—Details
    • G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
    • G01S3/065—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna by using non-directional aerial

Definitions

  • fTof- provide aplurality of coupling means between alowimpedanee transmission line anday p lllaltyffOfQ receivers w'lfiichwill ⁇ substantially prevent inter-actionjbetween the receivers.
  • ⁇ jTo provide between' aradio direction finding system and alplurality of .receivers" a coupling means havingcharacteristics such thatthere is substantially'no inter-action' between ⁇ the re-W DCvers and thelidirection iin ⁇ diifig system.
  • a monopole sensing antenna I2 is positioned in thegeometrical cen-V Between the monopoles and ground are antenna coupling unitsl I4, I6, I8, 2i!
  • These coupling units may be of the ktype described in acopendingBusignies "application C Veri'cnfthe transmissionlineis substantially iii) serial Number 481,760 iiied April 3, 1943, now i Patent No. 2,434,904 granted January 27, 1948 and comprise vacuum tube amplifiers ⁇ of the cathode ⁇ follower' type.
  • these coupling units have an 4rlpilt impedance suitablefor matchingthe impedanceiof theantennas to which they are' connected and ⁇ af'i'elativelylow output impedance suitable'for matching the impedance'of a low impedance transmission line to-which the output ⁇ of ⁇ said coupling unit isconnected.
  • transmission lines represented by refer-V encenumerals 2li,l Z6 extend from the coupling unitsM andj I8 and at right anglesfto the plane of the antennas 4 and 8. These. transmission lines are crossconnectedat the point 28 where they connectA with a further transmission line 30- which extends to a direction finding receiver 32 located at a distant"'point. ⁇ The' characteristics of these transmission lines are such that a suitableimpedance matchv occursfat-thepoint 28. vIn
  • .the coupling arrangement comprises the .vacuumtube amplier shown within the dotted'lolock 46.
  • v"11h-e amplifier comprises a vacuum ltube '48 #having cathode, control grid, and plate electrodes, 50, 52 and 54 respectively and also ascreengrid .5.6 rand a suppressor grid 58.
  • resistor 60 is .in Ythe .input ycircuit of the amplifier whileiboth resistors 6,0 vand '62 arein A'the output circuit thereof.
  • Capacitor 64 sservesas acoupling .between the amplifier-and the conductor .44 of -the transmission ⁇ line Ibetween the -sensing antenna and the direction iiriderreceiver.V :fResistorfBisfa grid leak.
  • a :positive lpotential is applied to v-.the anode .54 ⁇ andalso tto the .screen .grid ,55, the potential to the latter-being supplied .throughiresistor A68.
  • .Capacitors 1.2. and 14 serve as coupling reactors between the output of .the -amplifier .and .the 4receiver 15.
  • va negative .potential .with Arespect .to ground .appears .inthe output circuit 4 ⁇ betweenthe resistor T62 and the anode 15.4. Thesepositiveand negative potentials. tend .to neutralize each other in their reactiononthe control. grid .52 inthe .input circuit. These positive .and .negative-potentials are also coupled to and actuate receiver 1.6 through ⁇ the coupling capacitors '1.4 and 1.2 respectively.
  • the neutralization from .the output .to Athe .input circuit maybe .made substantially complete by connecting .twoneutralizingf capacitors l8.0 and '82 'betweenthe plate and controLgrid and between the cathode and control grid respectively.
  • the rotor plates of .these capacitors . may be mounted Yon a common shaft .an'd so Epositioned with respect to .their corresponding stator plates that, as .the capacitanceof one capacitor increases ,the capacitance .of .theother-.capacitor .decreases.
  • each of said coupling units have a high impedance relative to the impedance of the transmission lines.
  • each of said coupling units comprises a vacuum tube amplier having cathode,-'contro1 grid and anode eiectrodes, an input circuit connected between said cathode and control'grid, an output circuit connected between said cathode and anode, and neutralizing means connected between said output and input circuits to minimize reaction therebetween.
  • each of said coupling units comprises a phase splitting vacuum tube amplier.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
US500076A 1943-08-26 1943-08-26 Coupling arrangement Expired - Lifetime US2457123A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE476848D BE476848A (no) 1943-08-26
US500076A US2457123A (en) 1943-08-26 1943-08-26 Coupling arrangement
FR952689D FR952689A (fr) 1943-08-26 1947-08-05 Dispositifs de couplage de récepteurs à une ligne de transmission électrique
ES0179899A ES179899A1 (es) 1943-08-26 1947-09-27 Mejoras en sistemas de acoplamiento de radiorreceptores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US500076A US2457123A (en) 1943-08-26 1943-08-26 Coupling arrangement

Publications (1)

Publication Number Publication Date
US2457123A true US2457123A (en) 1948-12-28

Family

ID=23987942

Family Applications (1)

Application Number Title Priority Date Filing Date
US500076A Expired - Lifetime US2457123A (en) 1943-08-26 1943-08-26 Coupling arrangement

Country Status (4)

Country Link
US (1) US2457123A (no)
BE (1) BE476848A (no)
ES (1) ES179899A1 (no)
FR (1) FR952689A (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578836A (en) * 1947-12-03 1951-12-18 Gen Bronze Corp Television and radio distribution system
US2628312A (en) * 1949-05-24 1953-02-10 Rca Corp Receiving station antenna distribution system
US2724772A (en) * 1950-05-10 1955-11-22 Decca Record Co Ltd Aircraft radio antennae

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313483A (en) * 1919-08-19 High-freqttency-carrier telephony
US1853181A (en) * 1930-02-06 1932-04-12 Rca Corp Centralized radio system
US1912766A (en) * 1923-06-27 1933-06-06 Telefunken Gmbh Receiving arrangement with aperiodic directional aerial system
US1971235A (en) * 1931-11-28 1934-08-21 Bell Telephone Labor Inc Radio receiving system
US2000190A (en) * 1931-08-28 1935-05-07 Bell Telephone Labor Inc Radio receiving system
US2003962A (en) * 1929-03-29 1935-06-04 Rca Corp Radio frequency distribution system
US2006994A (en) * 1932-05-10 1935-07-02 Rca Corp Radio frequency distribution system
US2054799A (en) * 1932-04-20 1936-09-22 Telefunken Gmbh High frequency distribution system
US2129075A (en) * 1936-02-19 1938-09-06 Rca Corp Centralized radio system for short and broadcast waves
US2147807A (en) * 1936-11-07 1939-02-21 Mackay Radio & Telegraph Co Transmission line
US2179414A (en) * 1937-05-25 1939-11-07 Philco Radio & Television Corp Contrast amplifier
US2229043A (en) * 1939-01-28 1941-01-21 Wired Radio Inc Radio reception system
US2229044A (en) * 1939-10-11 1941-01-21 Wired Radio Inc Radio receiving method and system
US2411706A (en) * 1942-06-03 1946-11-26 Gen Electric Phase inverter circuit

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313483A (en) * 1919-08-19 High-freqttency-carrier telephony
US1912766A (en) * 1923-06-27 1933-06-06 Telefunken Gmbh Receiving arrangement with aperiodic directional aerial system
US2003962A (en) * 1929-03-29 1935-06-04 Rca Corp Radio frequency distribution system
US1853181A (en) * 1930-02-06 1932-04-12 Rca Corp Centralized radio system
US2000190A (en) * 1931-08-28 1935-05-07 Bell Telephone Labor Inc Radio receiving system
US1971235A (en) * 1931-11-28 1934-08-21 Bell Telephone Labor Inc Radio receiving system
US2054799A (en) * 1932-04-20 1936-09-22 Telefunken Gmbh High frequency distribution system
US2006994A (en) * 1932-05-10 1935-07-02 Rca Corp Radio frequency distribution system
US2129075A (en) * 1936-02-19 1938-09-06 Rca Corp Centralized radio system for short and broadcast waves
US2147807A (en) * 1936-11-07 1939-02-21 Mackay Radio & Telegraph Co Transmission line
US2179414A (en) * 1937-05-25 1939-11-07 Philco Radio & Television Corp Contrast amplifier
US2229043A (en) * 1939-01-28 1941-01-21 Wired Radio Inc Radio reception system
US2229044A (en) * 1939-10-11 1941-01-21 Wired Radio Inc Radio receiving method and system
US2411706A (en) * 1942-06-03 1946-11-26 Gen Electric Phase inverter circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578836A (en) * 1947-12-03 1951-12-18 Gen Bronze Corp Television and radio distribution system
US2628312A (en) * 1949-05-24 1953-02-10 Rca Corp Receiving station antenna distribution system
US2724772A (en) * 1950-05-10 1955-11-22 Decca Record Co Ltd Aircraft radio antennae

Also Published As

Publication number Publication date
BE476848A (no)
FR952689A (fr) 1949-11-22
ES179899A1 (es) 1947-11-01

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