US3305871A - Sender antenna enveloped by a tubular carrier mast - Google Patents

Sender antenna enveloped by a tubular carrier mast Download PDF

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Publication number
US3305871A
US3305871A US321735A US32173563A US3305871A US 3305871 A US3305871 A US 3305871A US 321735 A US321735 A US 321735A US 32173563 A US32173563 A US 32173563A US 3305871 A US3305871 A US 3305871A
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US
United States
Prior art keywords
tubular
wall
enveloped
antenna
mast
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
US321735A
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English (en)
Inventor
Kruger Wolfgang
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens Corp
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Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3305871A publication Critical patent/US3305871A/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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material

Definitions

  • the antenna described in the copending application comprises dipole fields disposed within a tubular mast made of insulating material and serving as a carrier and weather protection therefor, the hollow insulating body forming the mast being reinforced by inserts which are respectively embedded Within or surrounded by the insulating material.
  • the object of the present invention is to improve the mechanical stability of the hollow insulating body by appropriately constructing the reinforcing inserts.
  • this object is realized by the provision of reinforcing inserts which are made in the form of cross-sectionally arcuate or sickle-shaped shells extending parallel to the longitudinal axis of the hollow insulating body forming the tubular carrier mast.
  • This measure makes it possible to construct a tubular insulating mody of exteriorly simple configuration, with decreased wall thickness and increased stability against bending stresses and the formation of dents.
  • a plurality of such cross-sectionally arcuately shaped shell are advantageously uniformly distributed in angular positions throughout the cylindrical tubular insulating body.
  • the radiators may be so arranged with respect to the wall of the tubular insulating body that they lie, as seen in the main radiation directions, respectively opposite the wall parts with the least thickness.
  • tubular insulating material cylinder is advantageously effected by applying the prefabricated cross-sectionally arcuate shells to the inner wall which is made of a plurality of fabric layers and covering the shells by further outer fabric layers, so that they are on all sides surrounded by such layers.
  • the arcuately shaped shells are appropriately made of fiber glass layers which are connected by epoxyor polyester resin.
  • the fabric layers, between which the arcuately shaped shells are disposed, are advantageously made of the same material, namely, synthetic fiber glass material, as the shells.
  • FIG. 1 shows in cross-sectional representation an omnidirectional antenna disposed within a tubular insulating material envelope serving as a carrier therefor;
  • FlG. 2 shows in cross-sectional representation details of a flange which is part of a tubular insulating material cylinder and serves for connecting adjacent cylinders together;
  • FIG. 3 shows in perspective view a cross-seetionally arcuately shaped shell serving as a reinforcing insert.
  • the omnidirectional antenna according to FIG. 1 comprises four dipole radiator assemblies 1 to 4 which are disposed in quadratic arrangement and in suitable manher (not shown) fastened to the inner wall of the tubular insulating material carrier 5.
  • the antennas which are appropriately fed in rotary field, serve for producing an omnidirectional radiation diagram.
  • the enveloping wall 5 comprises an outer sheath 5a and an inner sheath 511, such sheaths being respectively composed of a plurality of wound fabric layers consisting of fiber glass, which are bonded together by saturation with a suitable binder.
  • the sheaths 5a and 5b are formed by winding the corresponding fabric layers, the insert shells being placed in position on the Wound inner sheath 5b and the fabric layers forming the outer sheath 5a being wound thereabout, thus embedding the arcuate shells between the sheaths.
  • the wall thickness can thus be held relatively small and therefore affects the radiation only slightly.
  • the arcuately shaped shells 6 to it are with respect to the dipole fields 1 to 4 angularly so arranged that the main radiation directions of the dipole fields lie in the regions of the thinnest wall sections of the tubular insulating cylinder 5. This is obtained by disposing the arcuately shaped shells substantially in the direction of the diagonals of the polygonal arrangement formed by the dipole radiator assemblies 3 to 4.
  • the lateral extent-as part of the angular disposition-of the reinforcing shells 6 to 9, which extend in longitudinal direction of the tubular insulating material cylinder 5 is, with respect to the number thereof so selected, that they do not mutually overlap and that the wall thickness is in given regions merely formed by the sheaths 5a an-d'Sb.
  • FIG. 2 shows in cross-sectional representation the construction of such a flange 10 at the end of a tubular insulating material cylinder, the section being taken along a line intersecting an arcuate reinforcing insert 6.
  • the outer fabric sheath 5a is thicker in the region of the flan e and is, just as the inner fabric sheath 5b, bent radially inwardly.
  • the arcuate shell 6 may terminate at the region of the thickened flange, as shown, or may likewise be bent radially inwardly.
  • the flange is on the inside reinforced by means of a crosssectionally L-shaped ring lit. Suitable bores are formed in the radially inwardly extending parts, for extending therethrough fastening elements, for example, screws or rivets serving for connecting together adjacent insulating material cylinders.
  • FIG. 3 shows one of the insulating material reinforcing shells, for example, the shell 6, which has throughout its extent approximately the same cross-section and a curvature which matches the curvature of the respective insulating material cylinder into which it is to be inserted.
  • a sender antenna according to claim 1 wherein the edges of the respective reinforcing inserts are angularly spaced from one another, the resulting spaces being bridged by relatively thin wall portions of said tubular insulating body which portions are composed solely of the respective outer and inner sheaths.

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  • Body Structure For Vehicles (AREA)
  • Insulators (AREA)
  • Pyridine Compounds (AREA)
  • Details Of Aerials (AREA)
  • Building Environments (AREA)
US321735A 1962-11-12 1963-11-06 Sender antenna enveloped by a tubular carrier mast Expired - Lifetime US3305871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES82411A DE1201884B (de) 1962-11-12 1962-11-12 Aus Dipolfeldern bestehende Sendeantenne, bei der als Traeger der Dipolfelder ein diese als Witterungsschutz umschliessender Isolierstoff-hohlkoerper vorgesehen ist, und Verfahren zu ihrer Herstellung

Publications (1)

Publication Number Publication Date
US3305871A true US3305871A (en) 1967-02-21

Family

ID=7510324

Family Applications (1)

Application Number Title Priority Date Filing Date
US321735A Expired - Lifetime US3305871A (en) 1962-11-12 1963-11-06 Sender antenna enveloped by a tubular carrier mast

Country Status (6)

Country Link
US (1) US3305871A (forum.php)
DE (1) DE1201884B (forum.php)
GB (1) GB1024368A (forum.php)
NL (1) NL298526A (forum.php)
NO (1) NO117867B (forum.php)
SE (1) SE332844B (forum.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749997A (en) * 1986-07-25 1988-06-07 Grumman Aerospace Corporation Modular antenna array
US5592185A (en) * 1993-03-30 1997-01-07 Mitsubishi Denki Kabushiki Kaisha Antenna apparatus and antenna system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2413085A (en) * 1945-01-29 1946-12-24 Philco Corp Antenna system
US2607009A (en) * 1948-10-08 1952-08-12 Philco Corp Electromagnetic wave transmissive structure
US2631237A (en) * 1948-05-08 1953-03-10 Fed Telecomm Lab Inc Antenna
FR1236873A (fr) * 1958-09-29 1960-07-22 Siemens Ag Antenne d'émission avec panneaux de dipôles
US3039100A (en) * 1958-12-03 1962-06-12 Trg Inc Thin-wall radome utilizing irregularly spaced and curved conductive reinforcing ribs obviating side-lobe formation
US3252161A (en) * 1961-05-10 1966-05-17 Siemens Ag Insulated tubular tower with metallic stiffeners for supporting plural dipoles internally thereof with minimum interference

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2413085A (en) * 1945-01-29 1946-12-24 Philco Corp Antenna system
US2631237A (en) * 1948-05-08 1953-03-10 Fed Telecomm Lab Inc Antenna
US2607009A (en) * 1948-10-08 1952-08-12 Philco Corp Electromagnetic wave transmissive structure
FR1236873A (fr) * 1958-09-29 1960-07-22 Siemens Ag Antenne d'émission avec panneaux de dipôles
US3039100A (en) * 1958-12-03 1962-06-12 Trg Inc Thin-wall radome utilizing irregularly spaced and curved conductive reinforcing ribs obviating side-lobe formation
US3252161A (en) * 1961-05-10 1966-05-17 Siemens Ag Insulated tubular tower with metallic stiffeners for supporting plural dipoles internally thereof with minimum interference

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749997A (en) * 1986-07-25 1988-06-07 Grumman Aerospace Corporation Modular antenna array
US5592185A (en) * 1993-03-30 1997-01-07 Mitsubishi Denki Kabushiki Kaisha Antenna apparatus and antenna system

Also Published As

Publication number Publication date
SE332844B (forum.php) 1971-02-22
NO117867B (forum.php) 1969-10-06
DE1201884B (de) 1965-09-30
GB1024368A (en) 1966-03-30
NL298526A (forum.php)

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