US2327435A - Antenna interaction compensating means - Google Patents

Antenna interaction compensating means Download PDF

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Publication number
US2327435A
US2327435A US416163A US41616341A US2327435A US 2327435 A US2327435 A US 2327435A US 416163 A US416163 A US 416163A US 41616341 A US41616341 A US 41616341A US 2327435 A US2327435 A US 2327435A
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US
United States
Prior art keywords
antenna
interaction
energy
compensating means
beacon
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
US416163A
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English (en)
Inventor
Armig G Kandoian
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.)
Federal Telephone and Radio Corp
Original Assignee
Federal Telephone and Radio Corp
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 Federal Telephone and Radio Corp filed Critical Federal Telephone and Radio Corp
Priority to US416163A priority Critical patent/US2327435A/en
Application granted granted Critical
Publication of US2327435A publication Critical patent/US2327435A/en
Priority to FR939080D priority patent/FR939080A/fr
Priority to CH258733D priority patent/CH258733A/de
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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Definitions

  • This invention relates to method and means for compensating interaction between antenna elements and more particularly to a-n arrangement for compensating interaction .between antenna elements of a radio beacon.
  • a radio beacon with quadrant identification has been proposed in which two separate radio beacon arrays are arranged at right angles to one another, the beacons each consisting of several units.
  • the beacons each consisting of several units.
  • two of the antenna units are arranged directly in vertical alignment.
  • a means was proposed in this system for compensating somewhat the interaction between these vertically arranged units. It has been found, however, that with this arrangement interference occurred at high altitudes within the angle of about 90 subtended directly above the beacon, dueto uncompensated minor lobes.
  • Fig. 2 is'afdiagrammatic illustration of radiai tion diagram produced by such a radio beacon.
  • avradio range beacon comprising antennaeZ, 3 and i to which energy is supplied f rom transmitter I over modulators Ip and I I,'"a. nd network'lg. -Central antenna unit 3 is supplied over the'flin'e 'II connected tofnret- Work I2.
  • the energy thus'supplied to these an# tenna units willproduce a field pattern such as shown at 2%', Fig.' it. at right antics to the :beacon comprising antennae 2, 3 and 4 is provided a further beacon arrangement consisting of antennae 2A, 3A and 4A.
  • modulator I4 which is preferably a balanced modulator and from I4 energy is supplied to a keying reversing (Cl. Z50-11) switch I6 to the two side radiators 2A and 4A. Another portion of the energy from modulator I4 is fed over line I'IA to antenna unit 3A.
  • This energy supplied to the auxiliary or identification beacon contains only side bands which may be lreceived on an aircraft with the carrier frequency transmitted from antenna 3.
  • Antenna units 2 and 4 are connected in a manner to prevent parasitic effects due to energy from antennae 3 and 3A.
  • antenna units 2A and 4A are arranged to prevent parasitic effects due to energy from antennae 3A and 3. This arrangement then prevents any parasitic action of the side radiators 2, 4, 2A or 4A, because of any radiation effects at 3 or 3A. There remains, however, a certain amount of interaction between units 3 and 3A.
  • this parasitic action was partiallycompensated by feeding energy between lines I ⁇ I and I'IA.
  • the adjustment for this purpose was achieved by moving one connection point of a line interconnecting lines II and IIA along conductors Il or IIA until no interaction eiect was noticed between lines I'I and IIA. It was found, however, that at high altitudes there were troublesome multiple lobes or cross-over effects due to interaction between antennae 3 and 3A.
  • short circuited quarter wavelength transmission line sections I8, IBA are bridged across lines I'I, I'IA, respectively. At chosen points on sections I8, IBA is connected line I9I preferably provided with one or more

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
US416163A 1941-10-23 1941-10-23 Antenna interaction compensating means Expired - Lifetime US2327435A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US416163A US2327435A (en) 1941-10-23 1941-10-23 Antenna interaction compensating means
FR939080D FR939080A (fr) 1941-10-23 1946-04-01 Dispositif pour compenser l'inter-réaction entre les éléments d'antennes d'un radio-phare
CH258733D CH258733A (de) 1941-10-23 1947-01-24 Verfahren und Anordnung zur Kompensation der gegenseitigen Beeinflussung von Antennen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US416163A US2327435A (en) 1941-10-23 1941-10-23 Antenna interaction compensating means

Publications (1)

Publication Number Publication Date
US2327435A true US2327435A (en) 1943-08-24

Family

ID=23648820

Family Applications (1)

Application Number Title Priority Date Filing Date
US416163A Expired - Lifetime US2327435A (en) 1941-10-23 1941-10-23 Antenna interaction compensating means

Country Status (3)

Country Link
US (1) US2327435A (de)
CH (1) CH258733A (de)
FR (1) FR939080A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429634A (en) * 1943-06-12 1947-10-28 Standard Telephones Cables Ltd Four course beacon
US2609504A (en) * 1946-12-12 1952-09-02 Padevco Inc Antenna system
US2713164A (en) * 1945-05-21 1955-07-12 Itt Direction finding system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429634A (en) * 1943-06-12 1947-10-28 Standard Telephones Cables Ltd Four course beacon
US2713164A (en) * 1945-05-21 1955-07-12 Itt Direction finding system
US2609504A (en) * 1946-12-12 1952-09-02 Padevco Inc Antenna system

Also Published As

Publication number Publication date
FR939080A (fr) 1948-11-03
CH258733A (de) 1948-12-15

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