US2293429A - Short-wave aerial - Google Patents

Short-wave aerial Download PDF

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Publication number
US2293429A
US2293429A US393708A US39370841A US2293429A US 2293429 A US2293429 A US 2293429A US 393708 A US393708 A US 393708A US 39370841 A US39370841 A US 39370841A US 2293429 A US2293429 A US 2293429A
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US
United States
Prior art keywords
antenna
wires
short
rods
wave aerial
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Expired - Lifetime
Application number
US393708A
Inventor
Feussner Hellmuth
Kluge Hermann
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Telefunken AG
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Telefunken AG
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Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
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Publication of US2293429A publication Critical patent/US2293429A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/085—Flexible aerials; Whip aerials with a resilient base
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/06—Facilitating unhairing, e.g. by painting, by liming
    • C14C1/065—Enzymatic unhairing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
    • H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
    • H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12326—All metal or with adjacent metals with provision for limited relative movement between components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12347—Plural layers discontinuously bonded [e.g., spot-weld, mechanical fastener, etc.]

Definitions

  • antennae consisting of solid metal have been suggested of a form tapering from the base or bottom end to the end or top thus resulting in a conical form.
  • antennae of this kind inhere the drawback that they possess relatively little mechanical damping and that the material is subjected to marked bending stresses on folding the antenna.
  • an antenna tapered toward the top is made by using a plurality of wires of like diameter, but dissimilar length, the wires being united in such a way that the number of adjacent wires, figured from the bottom or base up to the top of the antenna diminishes,
  • FIG. 1 is an elevation and Figure 2 is an end view.
  • this antenna consists of a plurality of equal, constituent wires, I, 2, 3, 4, 5, etc., which are disposed around the longest wire, although it is possible also to use several wires having the aggregate length of the antenna.
  • the top ends of each constituent wire surrounding the center wire consists of eyelets B, l, 8, 9 through which the longer wires are threaded and held together. At the bottom or base end all of the wires are inter-connected by any convenient means, not shown.
  • This construction offers the advantage that as a result of subdivision and of the change of the constituents being able to shift in respect to one another, the stress in the material arising upon bending the antenna will be less than in the case where the aerial of similar form is made of solid metal.
  • the friction between the constituent wires in respect to one another considerably raises the mechanical damping of the antenna so that the time-constant for mechanical vibrations becomes small. It could be surmised that the mutual contact between the constituent wires of the bunch might occasion crackling noises in radio apparatus. However, this has not been observed to be the case, for, as a matter of fact, neighboring portions of the constituent wires are always at one and the same potential. What should also be mentioned in this connection is this further advantage that the construction of the antenna of the invention is simple and of low cost.
  • An antenna comprising a bundle of parallel elastic conductive rods of dissimilar lengths, all of said rods having their one ends in alignment and means surrounding said bundle and clamping said rods together at the other ends of said rods.
  • An antenna comprising a bundle of parallel elastic conductive rods of dissimilar lengths, all of said rods having their one ends in alignment and means surrounding said bundle and clamping said rods together at the other ends of all of said rods except the longest.
  • An antenna comprising a. bundle of parallel elastic conductive rods of dissimilar lengths, all of

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Details Of Aerials (AREA)

Description

1942. FEUSSNER ET-AL 2,293,429
\SHORT WAVE AERIAL Filed May 16, 1941 INVENTORS HELLMUTl-l FEUSSNER ATTORNEY Patented Aug. 18, 1942 UNITED STATES PATENT OFFICE SHORT-WAVE AERIAL Application May 16, 1941, Serial No. 393,708 In Germany February 9, 1940 3 Claims.
In transmitter and receiver apparatus ofradio signaling work operating with short waves unsupported antenna are employed. The latter for a number of special uses must be flexible in order that they may be laid or folded together to result in relatively reduced dimensions. They must moreover be elastic in order that by being bent they may not lose their shape. Finally, they must possess adequate mechanical damping in order that their period of vibration may not be long. For this purpose, antennae consisting of solid metal have been suggested of a form tapering from the base or bottom end to the end or top thus resulting in a conical form. However, antennae of this kind inhere the drawback that they possess relatively little mechanical damping and that the material is subjected to marked bending stresses on folding the antenna.
According to this invention an antenna tapered toward the top is made by using a plurality of wires of like diameter, but dissimilar length, the wires being united in such a way that the number of adjacent wires, figured from the bottom or base up to the top of the antenna diminishes,
securing to one another of the Wires being such that upon fiexure of the antenna slight displacement or shift of the constituent wires in an axial direction is possible.
An antenna, according to the invention, is shown in the drawing wherein Figure 1 is an elevation and Figure 2 is an end view. As can be seen this antenna consists of a plurality of equal, constituent wires, I, 2, 3, 4, 5, etc., which are disposed around the longest wire, although it is possible also to use several wires having the aggregate length of the antenna. The top ends of each constituent wire surrounding the center wire consists of eyelets B, l, 8, 9 through which the longer wires are threaded and held together. At the bottom or base end all of the wires are inter-connected by any convenient means, not shown. This construction offers the advantage that as a result of subdivision and of the change of the constituents being able to shift in respect to one another, the stress in the material arising upon bending the antenna will be less than in the case where the aerial of similar form is made of solid metal. The friction between the constituent wires in respect to one another considerably raises the mechanical damping of the antenna so that the time-constant for mechanical vibrations becomes small. It could be surmised that the mutual contact between the constituent wires of the bunch might occasion crackling noises in radio apparatus. However, this has not been observed to be the case, for, as a matter of fact, neighboring portions of the constituent wires are always at one and the same potential. What should also be mentioned in this connection is this further advantage that the construction of the antenna of the invention is simple and of low cost. It will also be understood that the invention is not restricted to the exemplified embodiment here shown. The elementary Wires, furthermore, need not be of circular cross-sectional form; in fact, they could also consist of ribbons or bands and have any desired or convenient cross-sectional shape.
We claim:
1. An antenna comprising a bundle of parallel elastic conductive rods of dissimilar lengths, all of said rods having their one ends in alignment and means surrounding said bundle and clamping said rods together at the other ends of said rods.
2. An antenna comprising a bundle of parallel elastic conductive rods of dissimilar lengths, all of said rods having their one ends in alignment and means surrounding said bundle and clamping said rods together at the other ends of all of said rods except the longest.
3. An antenna comprising a. bundle of parallel elastic conductive rods of dissimilar lengths, all of
US393708A 1940-02-09 1941-05-16 Short-wave aerial Expired - Lifetime US2293429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE217641X 1940-02-09

Publications (1)

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US2293429A true US2293429A (en) 1942-08-18

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Application Number Title Priority Date Filing Date
US393708A Expired - Lifetime US2293429A (en) 1940-02-09 1941-05-16 Short-wave aerial

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CH (1) CH217641A (en)
NL (1) NL56406C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840199A (en) * 1953-03-23 1958-06-24 Ultra Electric Inc Collapsible aerials
FR2158492A1 (en) * 1971-11-03 1973-06-15 Int Standard Electric Corp
FR2518825A1 (en) * 1981-12-18 1983-06-24 Thomson Csf SHORT ANTENNA FOR PORTABLE ELECTROMAGNETIC WAVE TRANSMITTER-RECEIVER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840199A (en) * 1953-03-23 1958-06-24 Ultra Electric Inc Collapsible aerials
FR2158492A1 (en) * 1971-11-03 1973-06-15 Int Standard Electric Corp
US3789418A (en) * 1971-11-03 1974-01-29 Int Standard Electric Corp Flexible antenna formed of opposed convex laminated strips covered with a heat-shrunk hose
FR2518825A1 (en) * 1981-12-18 1983-06-24 Thomson Csf SHORT ANTENNA FOR PORTABLE ELECTROMAGNETIC WAVE TRANSMITTER-RECEIVER
EP0083262A1 (en) * 1981-12-18 1983-07-06 Thomson-Csf Short radiowave antenna for a portable transmitter-receiver

Also Published As

Publication number Publication date
CH217641A (en) 1941-10-31
NL56406C (en)

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