US1860128A - Antenna construction - Google Patents

Antenna construction Download PDF

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Publication number
US1860128A
US1860128A US171993A US17199327A US1860128A US 1860128 A US1860128 A US 1860128A US 171993 A US171993 A US 171993A US 17199327 A US17199327 A US 17199327A US 1860128 A US1860128 A US 1860128A
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US
United States
Prior art keywords
antenna
length
vertical
antenna construction
radiation
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
US171993A
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English (en)
Inventor
Bethenod Joseph
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Individual
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Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1860128A publication Critical patent/US1860128A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable

Definitions

  • An object of this invention is to provide a method for neutralizing the radiation from a portion of an antenna.
  • a further object is to provide an antenna adapted for short wave lengths and one in which the length of the transmitted wave may be easily varied.
  • a still further object is to provide an antenna in which the effective radiation is confined to a portion only thereof.
  • a further object is to provide a screen to neutralize the radiation from a desired portion of an an tenna.
  • a still further object of the invention is to provide novel means for varying the length of an antenna.
  • An antenna consists of a suitable conductor A, B C, connected with ground at A.
  • This antenna is excited by a high frequency generator in any desired and known manner, for instance by means of magnetic coupling with an inductance coil, marked D, arranged in series with the antenna.
  • a screen EF which may consist of a simple conductor identical to the part AB in question arranged parallel thereto but at adequate proximity.
  • screen E-F may comprise an inductance coil G, inductances G and D being then made adjustable if desired.
  • the screen EF may be grounded at E.
  • Inductances G and D are loosely cou pled and so wound that they oppose eachthe left being arbitrary, but also capable of assuming as its limiting position, one that will fall on the prolongation of thevertical "portion A.B.
  • the antenna is secured to an 1nsulat-orH whichitself is" in turn attached to a wire or strand 1; Inorder to lnsure radiationof the antenna" at .maximum eficiency, length'B-C should preferably be chosen of a length equal to a whole number integer ormultiple) of half wave lengths.
  • the lengthof portion BG is made adjustable tothe desired length of wave bythe aid of any suitable cuits of the antennais insured by a mobile connection system, for instance, a brush or contact device P in frictional engagement with a ring'carriedon the drum, the said bgi sh P beingjunited with the inductance
  • The; inclination of portion B C with respect to the horizontal may be varied by any convenient means
  • the means shown includes a cable or strand R in one end of which pulley J is pivoted'the other end of the cable being attached'to a wincl1 S-on which it may be wound, two intermediate pulleys T serving to 'guide' andsupport Y the cable R;
  • the present inventiongas will be readily understood is capable of -a great number of modifications, in construction or in detail.
  • a plurality of antenna arrangements of the same kind conveniently orientat-ed or directed" with reference to one another may be combinedin the samestation with the end
  • An antenna system comprising a vertical non-radiatingportion, a radiating porvertical antenna Whose height is equal to that of the vertical part of the first antenna, and
  • An antenna system comprising a vertical portion of constant length, a second portion adjustable both as to length and to horizontal angular displacement, and means for neutralizing the radiation from the vertical portion.
  • An antenna system comprising a vertical portion of constant length and a second portion adjustable both as to length and to horizontal angular displacement, and means for neutralizing the radiation from the vertical portion, said means including ascreening antenna adjacent to said vertical portion and equal in length thereto.
  • An antenna system comprising a vertical portion constant in length, a second adjustable radiating portion, an inductance coil 'in said vertical portion, a source of high frequency currents coupled to said inductance coil and a vertical conductor equal in length to said vertical portion and having an in ductance coil loosely coupled to said first mentioned coil, the arrangement being such that the currents in said vertical conductor and said verticalantennaportion are opposite in phase whereby the radiation from the latter is effectively neutralized.
  • An antenna system comprising a vertical portion of constant length and a second adjustable portion, means for varying the length of said latter portion, and additional means for adjusting its angle of inclination.
  • An antenna system comprising anantenna having a vertical part and'an inclined part, means for regulating the length of the said inclined part, means for regulating the inclination of the said inclined part, another

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  • Details Of Aerials (AREA)
US171993A 1926-03-09 1927-03-02 Antenna construction Expired - Lifetime US1860128A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR625293T 1926-03-09

Publications (1)

Publication Number Publication Date
US1860128A true US1860128A (en) 1932-05-24

Family

ID=8987609

Family Applications (1)

Application Number Title Priority Date Filing Date
US171993A Expired - Lifetime US1860128A (en) 1926-03-09 1927-03-02 Antenna construction

Country Status (2)

Country Link
US (1) US1860128A (fr)
FR (1) FR625293A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474242A (en) * 1945-06-13 1949-06-28 Carl K Gieringer Adjustable antenna
US2573682A (en) * 1941-03-17 1951-11-06 Engineering Res Corp Means and method for electromagnetic-wave investigations
US5865390A (en) * 1996-10-24 1999-02-02 Iveges; Steve I Variable-length antenna element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573682A (en) * 1941-03-17 1951-11-06 Engineering Res Corp Means and method for electromagnetic-wave investigations
US2474242A (en) * 1945-06-13 1949-06-28 Carl K Gieringer Adjustable antenna
US5865390A (en) * 1996-10-24 1999-02-02 Iveges; Steve I Variable-length antenna element

Also Published As

Publication number Publication date
FR625293A (fr) 1927-08-06

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