US2953786A - Antenna for polarized propagation - Google Patents

Antenna for polarized propagation Download PDF

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Publication number
US2953786A
US2953786A US739748A US73974858A US2953786A US 2953786 A US2953786 A US 2953786A US 739748 A US739748 A US 739748A US 73974858 A US73974858 A US 73974858A US 2953786 A US2953786 A US 2953786A
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US
United States
Prior art keywords
conductor
radiating
signal
radiative
vector
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
US739748A
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English (en)
Inventor
Lloyd O Krause
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 US739748A priority Critical patent/US2953786A/en
Priority to GB16205/61A priority patent/GB924145A/en
Priority to DEG27191A priority patent/DE1093837B/de
Priority to FR796568A priority patent/FR1226301A/fr
Application granted granted Critical
Publication of US2953786A publication Critical patent/US2953786A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas

Definitions

  • the antenna system of the second specific aspect of the invention handles a single kind of information signals.
  • the signal feeding means feeds the information signals to the energization terminals in the above described manner, there is an interaction between the electromagnetic radiation transmitted from the second and third conductors. Since the antenna system is now radiating both horizontally and vertically polarized radiation of the same frequency, the result nt p lariz t n will be circular when there is a ninety degree time phase displacement between the linearly polarized electromagnetic waves.
  • Figures 6 to 9 are alternate vector diagrams using time as a parameter to show the vector interactions required to establish different forms of polarized energy.
  • Figure 6 shows the. interaction which produces horizontal polarization
  • Figure 7 the interaction for circular polarization
  • Figure 8 for vertical polarization
  • Figure 9 for elliptically polarized radiation.
  • the antenna system is vertically mounted with respect to the earth, and the radiation pattern may be either linearly or circularly polarized. More exactly, the volumetric radiation pattern of the side fire type is a solid of revolution about the antenna axis of a directive lobe normal to the axis.
  • the radiation from an end fire helical antenna system such as is described and claimed in the copending United States application of 'Paul M. Pan, Serial No. 646,837 filed March 18, 1957, and assigned to the same assignee, is concentrated along the axis of the helical antennas.
  • the radiation may also be either circularly or linearly polarized.
  • the coaxial lines 32 and 34 are respectively coupled between the energization terminals 22 and 26 and 24 and 26 in the following manner.
  • the inner conductor of the coaxial line 32 is coupled via the energization terminal 22 to the radiating conductor 42, while the outer conductor of the coaxial line 32 is coupled via the energization terminal 26 to the central conductor 20 to provide a feeding means for the upper radiating transmission line which comprises the radiating conductor 42 and the central conductor 20.
  • the first and second frequency signals may be fed alternately or simultaneously. Simultaneous feeding permits the transmission of two classes of information from the same antenna system.
  • a possible application could be in television wherein the audio signals and the video signals might be simultaneously transmitted over different carriers.
  • the polarization is elliptical. Circular polarization occurs for a ninety degree phase difference. Linear polarization occurs when the time phase differences are multiples of one hundred and eighty degrees.
  • a radiating system to radiate electromagnetic radiation of predetermined polarization comprising a central conductor, a first radiative conductor, said first radiative conductor being a right-handed helix of given pitch developed about said central conductor toward a first end of said central conductor, a second radiative conductor, said second radiative conductor being a lefthanded helix of the same given pitch extending from a second point along the length of said central conductor toward the other end, each of the turns of each of the helices of said radiative conductors having the same integral number of operating wavelengths, said first point being disposed between said second point and said first end of said central conductor, first feeding means coupled to the portion of said first radiative conductor adjacent to said first point and adapted to feed signal energy to said first radiative conductor, a second signal feeding means coupled to a portion of said second radiative conductor adjacent to said second point and adapted to feed signal energy to said second radiative conductor, a transmitter, and a half wavelength phase shifter, said transmitter being coupled to said first feeding
  • said coupling means couples signal energy from said first signal source to said first signal feeding means and in the same time phase to said second signal feeding means to produce an electromagnetic radiation having a horizontal polarization and said coupling means couples signal energy from said second signal source to said first signal feeding means and the same signal energy in time phase opposition to said second signal feeding means to produce vertically polarized electromagnetic radiation.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
US739748A 1958-06-04 1958-06-04 Antenna for polarized propagation Expired - Lifetime US2953786A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US739748A US2953786A (en) 1958-06-04 1958-06-04 Antenna for polarized propagation
GB16205/61A GB924145A (en) 1958-06-04 1959-05-12 Improvements in or relating to antenna structure
DEG27191A DE1093837B (de) 1958-06-04 1959-06-03 Wendelantenne mit einem linearen zentralen Leiter
FR796568A FR1226301A (fr) 1958-06-04 1959-06-04 Structure perfectionnée d'antenne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US739748A US2953786A (en) 1958-06-04 1958-06-04 Antenna for polarized propagation

Publications (1)

Publication Number Publication Date
US2953786A true US2953786A (en) 1960-09-20

Family

ID=24973622

Family Applications (1)

Application Number Title Priority Date Filing Date
US739748A Expired - Lifetime US2953786A (en) 1958-06-04 1958-06-04 Antenna for polarized propagation

Country Status (4)

Country Link
US (1) US2953786A (fr)
DE (1) DE1093837B (fr)
FR (1) FR1226301A (fr)
GB (1) GB924145A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015823A (en) * 1959-02-17 1962-01-02 Gen Electric Helical antenna null suppressor
US3166724A (en) * 1961-11-24 1965-01-19 Philip J Allen Electrical frequency shifter utilizing faraday phase shifter and dual mode coupler with rotatable reflection dipole
US3449657A (en) * 1966-11-14 1969-06-10 Chevron Res Helical antenna for irradiating an earth formation penetrated by a borehole and method of using same
FR2091927A1 (fr) * 1970-05-06 1971-01-21 Dassault Electronique
US3617890A (en) * 1967-01-12 1971-11-02 Sumitomo Electric Industries Induction radio system for vehicles
US4442438A (en) * 1982-03-29 1984-04-10 Motorola, Inc. Helical antenna structure capable of resonating at two different frequencies
US5587719A (en) * 1994-02-04 1996-12-24 Orbital Sciences Corporation Axially arrayed helical antenna
WO1998001920A1 (fr) * 1996-07-10 1998-01-15 Centre National D'etudes Spatiales Dispositif d'emission a antenne omnidirectionnelle
US5977931A (en) * 1997-07-15 1999-11-02 Antenex, Inc. Low visibility radio antenna with dual polarization
US6169523B1 (en) * 1999-01-13 2001-01-02 George Ploussios Electronically tuned helix radiator choke
US20050200554A1 (en) * 2004-01-22 2005-09-15 Chau Tam H. Low visibility dual band antenna with dual polarization
US8803749B2 (en) 2011-03-25 2014-08-12 Kwok Wa Leung Elliptically or circularly polarized dielectric block antenna
JP2016178489A (ja) * 2015-03-20 2016-10-06 日本無線株式会社 偏波共用ヘリカルアンテナ

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230540A (en) * 1961-06-09 1966-01-18 Sumitomo Electric Industries Spaced helical radiating conductor insulatingly supported along the length of central conductor support
GB2206243A (en) * 1987-06-24 1988-12-29 Panorama Antennas Ltd Dual-frequency helical antenna
DE4121060A1 (de) * 1991-06-26 1993-01-14 Ant Nachrichtentech Querstrahlende wendelantenne mit koaxialer zuleitung
US5600341A (en) * 1995-08-21 1997-02-04 Motorola, Inc. Dual function antenna structure and a portable radio having same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619635A (en) * 1950-06-19 1952-11-25 Herman N Chait Arbitrarily polarized antenna system
GB724795A (en) * 1952-02-13 1955-02-23 Gen Electric Improvements in and relating to antenna structures

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619635A (en) * 1950-06-19 1952-11-25 Herman N Chait Arbitrarily polarized antenna system
GB724795A (en) * 1952-02-13 1955-02-23 Gen Electric Improvements in and relating to antenna structures

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015823A (en) * 1959-02-17 1962-01-02 Gen Electric Helical antenna null suppressor
US3166724A (en) * 1961-11-24 1965-01-19 Philip J Allen Electrical frequency shifter utilizing faraday phase shifter and dual mode coupler with rotatable reflection dipole
US3449657A (en) * 1966-11-14 1969-06-10 Chevron Res Helical antenna for irradiating an earth formation penetrated by a borehole and method of using same
US3617890A (en) * 1967-01-12 1971-11-02 Sumitomo Electric Industries Induction radio system for vehicles
FR2091927A1 (fr) * 1970-05-06 1971-01-21 Dassault Electronique
US4442438A (en) * 1982-03-29 1984-04-10 Motorola, Inc. Helical antenna structure capable of resonating at two different frequencies
US5587719A (en) * 1994-02-04 1996-12-24 Orbital Sciences Corporation Axially arrayed helical antenna
FR2751137A1 (fr) * 1996-07-10 1998-01-16 Centre Nat Etd Spatiales Dispositif d'emission a antenne omnidirectionnelle
WO1998001920A1 (fr) * 1996-07-10 1998-01-15 Centre National D'etudes Spatiales Dispositif d'emission a antenne omnidirectionnelle
US6300916B1 (en) 1996-07-10 2001-10-09 Centre National D'etudes Spatiales Transmission device with omnidirectional antenna
US5977931A (en) * 1997-07-15 1999-11-02 Antenex, Inc. Low visibility radio antenna with dual polarization
US6292156B1 (en) 1997-07-15 2001-09-18 Antenex, Inc. Low visibility radio antenna with dual polarization
US6169523B1 (en) * 1999-01-13 2001-01-02 George Ploussios Electronically tuned helix radiator choke
US20050200554A1 (en) * 2004-01-22 2005-09-15 Chau Tam H. Low visibility dual band antenna with dual polarization
US7209096B2 (en) 2004-01-22 2007-04-24 Antenex, Inc. Low visibility dual band antenna with dual polarization
US8803749B2 (en) 2011-03-25 2014-08-12 Kwok Wa Leung Elliptically or circularly polarized dielectric block antenna
JP2016178489A (ja) * 2015-03-20 2016-10-06 日本無線株式会社 偏波共用ヘリカルアンテナ

Also Published As

Publication number Publication date
DE1093837B (de) 1960-12-01
GB924145A (en) 1963-04-24
FR1226301A (fr) 1960-07-11

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