US1375992A - Radio-receiving system - Google Patents

Radio-receiving system Download PDF

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Publication number
US1375992A
US1375992A US291114A US29111419A US1375992A US 1375992 A US1375992 A US 1375992A US 291114 A US291114 A US 291114A US 29111419 A US29111419 A US 29111419A US 1375992 A US1375992 A US 1375992A
Authority
US
United States
Prior art keywords
antenna
currents
receiving circuit
receiving
phase
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
US291114A
Other languages
English (en)
Inventor
Ernst F W Alexanderson
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Priority to US291114A priority Critical patent/US1375992A/en
Priority to GB29935/19A priority patent/GB142074A/en
Priority to FR512838A priority patent/FR512838A/fr
Application granted granted Critical
Publication of US1375992A publication Critical patent/US1375992A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna

Definitions

  • My presentinvention relates to radio receiving systems and more particularly to systems of the type commonly known as directional receiving systems.
  • the currents produced by means of the two exposures may be applied to the receiving circuit by means of variable ers and'su'itable phase shifting meansin such a way" that the currents produced by the desired signal will add in the receiving circuit while the currents produced by the undesired signals will be neutrahzed in the receiving circuit.
  • each circuit comprises two portions having different phase angle characteristics.
  • each circuit comprises two branches, one branch which includes-resistance 13, capacity 14 and inductance 15, and a second parallel branch which includes resistance 16, and inductance 17.
  • the tWo branches are preferably so designed that the'resultant impedance of the first branch is capacitive and the resultant impedance of the second branch is inductive.
  • Coupling coils 18 and 19, which are included in the resonant receiving circuit 6 are so arranged that the coupling between these coils and the inductances 15 and"17 may bevaried at will in order to vary the phase of the resultant currents impressed upon the receiving circuit 6.
  • suitable variation of the coupling of coils 18 and 19 it is possible to adjust the system so that the two currents produced by desired signals will add in the receiving circuit 6 while "ustment of the intensity couplers 9 and 10.
  • he receiving'circuit 6 includes an inductance 20 and a tuning condenser 21.
  • the currents set up in the receiving circuit are impressed in the manner indicated upon the grid circuit of a detector 22 of the pliotron type.
  • the precise manner in which the balancing effect is brought about is described more fully in my rlor application, Serial No. 254,17 9, filed eptember 16, 1918.
  • the receiving antenna should be aperiodic and that the intermediate circuits which contain phase shifting devices should also'be aperiodic.
  • phase varying means comprising an aperiodic intermediate circuit having two parallel branches having different phase angle characteristics, means for coupling both of said branches to the receiving circuit, and means for varying the coupling of both branches to the receiving circuit.

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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)
US291114A 1919-04-18 1919-04-18 Radio-receiving system Expired - Lifetime US1375992A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US291114A US1375992A (en) 1919-04-18 1919-04-18 Radio-receiving system
GB29935/19A GB142074A (en) 1919-04-18 1919-12-01 Improvements in and relating to directional wireless receiving systems
FR512838A FR512838A (fr) 1919-04-18 1920-03-31 Perfectionnements aux systèmes récepteurs de t. s. f.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US291114A US1375992A (en) 1919-04-18 1919-04-18 Radio-receiving system

Publications (1)

Publication Number Publication Date
US1375992A true US1375992A (en) 1921-04-26

Family

ID=23118911

Family Applications (1)

Application Number Title Priority Date Filing Date
US291114A Expired - Lifetime US1375992A (en) 1919-04-18 1919-04-18 Radio-receiving system

Country Status (3)

Country Link
US (1) US1375992A (fr)
FR (1) FR512838A (fr)
GB (1) GB142074A (fr)

Also Published As

Publication number Publication date
FR512838A (fr) 1921-02-01
GB142074A (en) 1921-03-01

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