US2771606A - Ultra-high frequency antenna system - Google Patents

Ultra-high frequency antenna system Download PDF

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Publication number
US2771606A
US2771606A US336396A US33639653A US2771606A US 2771606 A US2771606 A US 2771606A US 336396 A US336396 A US 336396A US 33639653 A US33639653 A US 33639653A US 2771606 A US2771606 A US 2771606A
Authority
US
United States
Prior art keywords
loop
antenna
radiators
members
ultra
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
US336396A
Other languages
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.)
TDK Micronas GmbH
International Telephone and Telegraph Corp
Original Assignee
Deutsche ITT Industries GmbH
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 BE526408D priority Critical patent/BE526408A/xx
Priority to NLAANVRAGE7901128,A priority patent/NL184976B/xx
Application filed by Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Priority to US336396A priority patent/US2771606A/en
Priority to US395757A priority patent/US2860339A/en
Priority to FR1092911D priority patent/FR1092911A/fr
Priority to DEI8258A priority patent/DE948705C/de
Priority to FR67480D priority patent/FR67480E/fr
Priority to DEI9224A priority patent/DE953623C/de
Priority to DEI9434A priority patent/DE1014181B/de
Priority to FR69758D priority patent/FR69758E/fr
Application granted granted Critical
Publication of US2771606A publication Critical patent/US2771606A/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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage

Definitions

  • This invention relates to an ultra-high frequency antenna system and more particularly to a rigid structural support for an antenna array having a plurality of loop radiators for use as a high gain transmitting antenna for an ultra frequency television station.
  • the radiation pattern of the transmitting antenna array be directed in a horizontal direction from an antenna structure which is elevated above ground, in order that the transmitted signal level be high at points distant from the transmitter.
  • the transmitted signal level be high at points distant from the transmitter.
  • an antenna system for use with television signal emissions be capable of being weatherproofed or pressurized in order to reduce the cost of maintenance to a minimum and be capable of having each of its individual radiators fed in phase in order to maintain the desired transmission pattern.
  • Another object of this invention is to provide a high gain antenna array in which ultra-high frequency horizontal polarized loop antennas are located inside a rigid self-supporting lattice structure which does not interfere with the radiated pattern.
  • a feature of this invention is the use of a self-supporting antenna structure having vertical members encompassing a plurality of vertically stacked horizontally poralized loop radiators.
  • Each of the loop radiators has a plurality of folded dipole radiating elements which are fed in phase by substantially equal lengths of transmission lines from an impedance matching transformer located at a central point.
  • the vertical members are rigidly coupled together by a plurality of horizontal braces located between the loop radiators.
  • Support frames associated with each of the loop radiators are connected to the vertical members and rigidly maintain the radiators in the center of the structure in such a manner that only vertical supports are disposed near each radiator allowing the antenna array system to radiate horizontally polarized emissions without interference from the supporting structure.
  • Fig. l is a schematic illustration in elevation of one antenna system in accordance with the principles of this invention.
  • Fig. 2 is a cross-sectional view taken along the lines 22 of Fig. 1;
  • Fig. 3 is a view in perspective of one form of horizontally polarized loop radiator for use with the antenna system shown in Fig. 1;
  • Fig. 4 is a schematic illustration in elevation of an alternate embodiment in an antenna system in accordance with the principles of this invention, and;
  • Fig. 5 is a cross-sectional view taken along lines of 55 of Fig. 4.
  • antenna system in accordance with the principles of this invention is shown comprising a supporting structure 1 encompassing a plurality of vertically stacked horizontally polarized loop radiators 2.
  • the support structure 1 comprises three vertical tubular members 3, 4, and 5, each composed of a material having a high structural strength, such as steel, located at the vertices of an equilateral triangle.
  • Connecting the vertical members 3, 4, and 5 are a plurality of horizontal brace members 6.
  • the support structure which may be divided into a plurality of substantially identical sections, such as an upper section '7 and a lower section 8, by a junction box 9 which may contain an impedance matching transformer and extra lengths of cable.
  • the vertical members 3, 4, and 5 may be located in an elevated position by being placed on a tower base It]; or if desired the vertical supports may be located on the ground.
  • Each of the loop radiators 2 is located inside the area encompassed by the vertical members 3, 4, and 5 and between horizontal brace members 6.
  • the supporting structure disposed horizontally of each loop radiator 2 contains only vertical members eliminating any possibility of the antenna structure interfering with the radiation pattern from the stack of horizontally polarized loop radiators.
  • Additional diagonal braces 6A may be utilized in the structure disposed horizontally of junction box 9.
  • a horizontally polarized loop radiator for use with the antenna structure shown in Fig. 1 comprises a triangular loop radiator having three half folded dipole antenna units 11, 12, and 13.
  • Each half folded dipole antenna unit comprises a pair of rectangular metallic elements 14 and 15 having their inner edges separated by space 16.
  • An impedance matching device 17 is coupled to the outer edge of element 14 and the inner edge of element 15.
  • the units 11, 12, and 13 are joined to a common feed point 18 by means of radial support members 19.
  • the inner conductor 2% of a transmission feed line 21 is divided at point 18 and coupled to the inner edge of elements 14.
  • the return path includes the support structure 1 which acts as the equivalent of an outer conductor for the feed line.
  • Each loop radiator 2 is coupled to the vertical support members 3, 4, and 5 by means of a tubular hub-like member 22 connected to radial members 19 and to which spokes 23 are connected coupling the tubular member 22 to the vertical supports 3, 4, and 5 by means of clamps 24.
  • the spokes 23 are located between horizontal braces 6 in such a manner as to keep 1 the zone immediately surrounding each loop radiator 2 free of horizontal or diagonal structure members thereby insuring that the radiations emitted by the antenna array will be free of interference from the support structure.
  • the hub mounting for the loop radiator being such as to locate the radiators in the zone defined by the vertical members and the adjacent horizontal members.
  • One form of antenna design which I have found satisfactory comprises a vertical stack of horizontal loop radiators which are fed in parallel in groups of twelve.
  • the optimum supporting structure was found to be a steel lattice 20 inches on a side. provided in order to be able to vertically stack loop radiators to a maximum aperture of approximately fifty feet while still maintaining a rigid structure.
  • the radiating loops were located inside the steel lattice at a vertical spacing of approximately one wave length.
  • the antenna support structure 25 comprises four vertical support members If desired, the spokes 23 may be clamped This size lattice was 26, 27, 28, and 29, each located at the corner of a square.
  • Horizontal braces 30 rigidly connect the vertical support members.
  • loop radiators 31 are located between alternate horizontal braces 30 and substantially one wave length apart.
  • diagonal structural members 32 may be added between alternate braces 30.
  • the use of four vertical support members provides a greater cross-sectional area and thus allows the use of a horizontally polarized loop radiator having a greater diameter than the loop radiator shown in Fig. 3.
  • any well-known loop radiator capable of transmitting in the ultra-high frequency band may be used in combination with the supporting structure of this invention.
  • each radiator may be surrounded with a sealing compound and thus be pressurized against weather.
  • the entire structure may be enclosed in a radome.
  • An antenna array comprising a support structure including a plurality of vertical support members disposed about a central vertical axis to form a substantially closed geometric pattern having a given horizontal crosssectional area and horizontal brace members interconnecting said vertical support members in vertically spaced planes to form a sturdy tower construction, a plurality of horizontally polarized loop radiators of loop area smaller than said cross-sectional area, each of said loop radiators having an axially disposed hub and a plurality of spoke supports disposed radially thereof and means coupling said spoke supports to said support structure to locate the radiator within the zone defined by said vertical support members and two adjacent planes formed by horizontal brace members.

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  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
US336396A 1953-02-11 1953-02-11 Ultra-high frequency antenna system Expired - Lifetime US2771606A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE526408D BE526408A (fr) 1953-02-11
NLAANVRAGE7901128,A NL184976B (nl) 1953-02-11 Elektrische reflectorlamp met wolfraamhalogeenlamp.
US336396A US2771606A (en) 1953-02-11 1953-02-11 Ultra-high frequency antenna system
US395757A US2860339A (en) 1953-02-11 1953-12-02 Ultra-high frequency antenna unit
FR1092911D FR1092911A (fr) 1953-02-11 1954-02-09 Systèmes d'antennes à très haute fréquence
DEI8258A DE948705C (de) 1953-02-11 1954-02-11 Antennenanordnung fuer den Dezimeterwellenbereich
FR67480D FR67480E (fr) 1953-02-11 1954-10-06 Système d'antennes à très haute fréquence
DEI9224A DE953623C (de) 1953-02-11 1954-10-08 Breitbandige Rundstrahl-Fernsehantenne hohen Gewinns
DEI9434A DE1014181B (de) 1953-02-11 1954-11-30 Strahlerelement fuer Dezimeterwellenantennen
FR69758D FR69758E (fr) 1953-02-11 1954-12-02 Systèmes d'antennes à très haute fréquence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US336396A US2771606A (en) 1953-02-11 1953-02-11 Ultra-high frequency antenna system

Publications (1)

Publication Number Publication Date
US2771606A true US2771606A (en) 1956-11-20

Family

ID=23315899

Family Applications (1)

Application Number Title Priority Date Filing Date
US336396A Expired - Lifetime US2771606A (en) 1953-02-11 1953-02-11 Ultra-high frequency antenna system

Country Status (5)

Country Link
US (1) US2771606A (fr)
BE (1) BE526408A (fr)
DE (3) DE948705C (fr)
FR (3) FR1092911A (fr)
NL (1) NL184976B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164834A (en) * 1960-11-25 1965-01-05 Rca Corp Waveguide tower with stacked slot radiators
US3254343A (en) * 1961-09-27 1966-05-31 Siemens Ag Lattice tower supporting interior dipoles with reduced interference
US3303506A (en) * 1962-06-29 1967-02-07 Siemens Ag Double mast antenna having the upper mast supported by a carrier mast which extends the length of the lower mast
US3394377A (en) * 1965-03-30 1968-07-23 Alford Andrew Slot antenna mounted within openwork support tower
FR2061498A1 (fr) * 1969-02-04 1971-06-25 Thomson Csf
US5204688A (en) * 1988-07-22 1993-04-20 Thomson-Lgt Laboratoire General Des Telecommunications Omnidirectional antenna notably for the emission of radio or television broadcasting signals in the decimetric waveband, and radiating system formed by a grouping of these antennas
US5504495A (en) * 1991-06-28 1996-04-02 General Signal Corporation Field convertible NTSC/HDTV broadcast antennas
WO1997006576A1 (fr) * 1995-08-10 1997-02-20 E-Systems, Inc. Antenne-reseau surbaissee pour systeme de communication terrestrea frequence de radiotelephonie mobile
US5787673A (en) * 1992-09-14 1998-08-04 Pirod, Inc. Antenna support with multi-direction adjustability
US20060092090A1 (en) * 2004-11-04 2006-05-04 Tennagon, Inc. Antenna tower mounting assembly and method
US8872713B1 (en) * 2010-04-21 2014-10-28 Rockwell Collins, Inc. Dual-polarized environmentally-hardened low profile radiating element

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1266835B (de) * 1962-07-18 1968-04-25 Rohde & Schwarz Strahleranordnung zum Erzeugen eines vertikal gebuendelten, horizontal polarisiertenRundstrahldiagramms
FR2451113A2 (fr) * 1978-06-19 1980-10-03 France Etat Doublet et antenne en plaques a polarisation circulaire
FR2552273B1 (fr) * 1983-09-21 1986-02-28 Labo Electronique Physique Antenne hyperfrequence omnidirectionnelle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238904A (en) * 1936-04-28 1941-04-22 Rca Corp Short wave communication system
US2310953A (en) * 1943-02-16 Ceramic from bauxite and process of
GB598548A (en) * 1944-12-01 1948-02-20 William Joseph O Brien Improvements in or relating to antennae for radio transmitters
US2533236A (en) * 1947-10-03 1950-12-12 Int Standard Electric Corp Antenna array

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2618746A (en) * 1948-08-13 1952-11-18 Rca Corp Antenna system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2310953A (en) * 1943-02-16 Ceramic from bauxite and process of
US2238904A (en) * 1936-04-28 1941-04-22 Rca Corp Short wave communication system
GB598548A (en) * 1944-12-01 1948-02-20 William Joseph O Brien Improvements in or relating to antennae for radio transmitters
US2533236A (en) * 1947-10-03 1950-12-12 Int Standard Electric Corp Antenna array

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164834A (en) * 1960-11-25 1965-01-05 Rca Corp Waveguide tower with stacked slot radiators
US3254343A (en) * 1961-09-27 1966-05-31 Siemens Ag Lattice tower supporting interior dipoles with reduced interference
US3303506A (en) * 1962-06-29 1967-02-07 Siemens Ag Double mast antenna having the upper mast supported by a carrier mast which extends the length of the lower mast
US3394377A (en) * 1965-03-30 1968-07-23 Alford Andrew Slot antenna mounted within openwork support tower
FR2061498A1 (fr) * 1969-02-04 1971-06-25 Thomson Csf
US5204688A (en) * 1988-07-22 1993-04-20 Thomson-Lgt Laboratoire General Des Telecommunications Omnidirectional antenna notably for the emission of radio or television broadcasting signals in the decimetric waveband, and radiating system formed by a grouping of these antennas
US5504495A (en) * 1991-06-28 1996-04-02 General Signal Corporation Field convertible NTSC/HDTV broadcast antennas
US5787673A (en) * 1992-09-14 1998-08-04 Pirod, Inc. Antenna support with multi-direction adjustability
WO1997006576A1 (fr) * 1995-08-10 1997-02-20 E-Systems, Inc. Antenne-reseau surbaissee pour systeme de communication terrestrea frequence de radiotelephonie mobile
US5757324A (en) * 1995-08-10 1998-05-26 E-Systems, Inc Low profile antenna array for land-based, mobile radio frequency communication system
EP0843904A1 (fr) * 1995-08-10 1998-05-27 E-Systems Inc. Antenne-reseau surbaissee pour systeme de communication terrestrea frequence de radiotelephonie mobile
EP0843904A4 (fr) * 1995-08-10 1998-12-02 E Systems Inc Antenne-reseau surbaissee pour systeme de communication terrestrea frequence de radiotelephonie mobile
US20060092090A1 (en) * 2004-11-04 2006-05-04 Tennagon, Inc. Antenna tower mounting assembly and method
US7576705B2 (en) * 2004-11-04 2009-08-18 Tennagon, Inc. Antenna tower mounting assembly and method
US8872713B1 (en) * 2010-04-21 2014-10-28 Rockwell Collins, Inc. Dual-polarized environmentally-hardened low profile radiating element

Also Published As

Publication number Publication date
DE948705C (de) 1956-09-06
DE953623C (de) 1956-12-06
FR69758E (fr) 1958-12-30
DE1014181B (de) 1957-08-22
FR67480E (fr) 1958-03-13
BE526408A (fr)
NL184976B (nl)
FR1092911A (fr) 1955-04-28

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