WO1996036089A1 - Process for producing a rod aerial - Google Patents

Process for producing a rod aerial Download PDF

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Publication number
WO1996036089A1
WO1996036089A1 PCT/DE1996/000712 DE9600712W WO9636089A1 WO 1996036089 A1 WO1996036089 A1 WO 1996036089A1 DE 9600712 W DE9600712 W DE 9600712W WO 9636089 A1 WO9636089 A1 WO 9636089A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
electrically
conductive paste
electrically conductive
electrically non
Prior art date
Application number
PCT/DE1996/000712
Other languages
German (de)
French (fr)
Inventor
Uwe Militz
Original Assignee
Robert Bosch 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
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1996036089A1 publication Critical patent/WO1996036089A1/en

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Definitions

  • the invention relates to a method for producing a rod antenna according to the preamble of the main claim.
  • Rod antennas are already known from the field of motor vehicle technology, in particular also in the form of helical antennas. Such helical antennas are usually produced by helically wrapping a wire made of an electrically non-conductive material with a wire. Also known from Funkschau 13/83, page 45, Figure 3 is a helical antenna in which a non-conductive carrier material is galvanically coated with a conductor material and then etched. These manufacturing processes are relatively complex and expensive.
  • the method according to the invention with the characterizing features of the main claim has the advantage that a rod antenna is very inexpensive and inexpensive, but also can be produced in any length. Furthermore, the method is suitable for producing different types of antennas with the same device. Advantageous further developments and improvements of the method specified in the main claim are possible through the measures listed in the subclaims.
  • Applying the paste in the form of a coil has the advantage that electrical and mechanical properties of the antenna, such as the directional characteristic, the frequency selectivity, but also the dimensions of the antenna can be varied.
  • conductive silver lacquer as a paste to be applied offers excellent electrical properties suitable for antennas and at the same time good processability in paste form.
  • Partial removal of the paste from the rod can advantageously be used for a subsequent change in the electrical properties of the antenna.
  • the removal of the paste by means of an acid or by mechanical or thermal means is particularly important are cost-effective and inexpensive to implement.
  • the coating of the coated rod with a protective layer advantageously serves to protect the rod antenna from environmental influences.
  • a liquid, curable insulator compound for the protective layer is an advantage in that it is a very inexpensive method and this method is also suitable for being carried out directly after coating the rod with the paste.
  • the production of the non-conductive rod from a carrier mass and glass fibers is to be considered as an advantageous embodiment, since this is also a very inexpensive production method which is also suitable for producing antennas of any length.
  • FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
  • the figure shows an arrangement for producing a rod antenna with a helix.
  • the figure shows an arrangement by means of which a helical antenna can be produced.
  • Glass fibers 3 are fed together with a carrier mass 2 to an extruder 8, where the two components are connected to one another.
  • the composite of glass fibers 3 and carrier mass 2 is then cured and then emerges from the extruder 8 in the form of an electrically non-conductive rod 1.
  • the electrically non-conductive rod 1 is set into a rotational movement by means of a friction wheel drive 9 in the translational direction and by means of a further friction wheel drive 10.
  • the electrically non-conductive rod 1 thus moved is coated with an electrically conductive paste 5 in the subsequent method step by means of a nozzle 6. Due to the rotational and translational movement of the electrically non-conductive
  • Rod 1 is thus a helical coating of the electrically non-conductive rod 1 with the electrically conductive paste 5.
  • the paste 5 is now cured on the rod 1.
  • the rod 1 coated in this way arrives at a chisel arrangement 11 which has a clamping action
  • the helically coated, electrically non-conductive rod 1 reaches a further extruder 12, where the electrically non-conductive rod 1 with the electrically conductive paste 5 thereon is coated with a liquid, curable insulator compound 4.
  • a protective layer 7 is thus formed on the electrically non-conductive rod 1.
  • the extruder 12 thus emerges as the product of
  • Antennas can be manufactured. This method is particularly suitable for the manufacture of rod antennas of any length. Any other drive devices can be used instead of the friction wheel drives 9, 10. By eliminating the rotary drive, a rod antenna with a straight conductor can also be produced. Silver conductive lacquer is particularly suitable for the electrically conductive paste 5, since it has the electrical properties that are most suitable for antenna technology and, at the same time, can be used well as curable paste 5. Instead of
  • Chisel arrangement 11 is also provided, the electrically conductive paste 5 thermally e.g. to be processed by means of a laser or by means of an acid. This processing can also be omitted with a precisely pre-shaped nozzle.
  • a protective layer 7 is also the use of a
  • the electrically conductive paste 5 is also selected so that it adheres to the surface of the electrically non-conductive rod 1. If the adhesive does not exist, an adhesive must also be inserted between the electrically non-conductive rod 1 and the electrically conductive paste 5.

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  • Details Of Aerials (AREA)

Abstract

The proposal is for a process for producing a rod aerial. Here, an electrically non-conductive rod (1) is coated with an electrically conductive paste (5).

Description

Verfahren zum Herstellen einer StabantenneMethod of making a rod antenna
Stand der TechnikState of the art
Die Erfindung geht aus von einem Verfahren zum Herstellen einer Stabantenne nach der Gattung des Hauptanspruchs. Stabantennen sind aus dem Bereich der Kraftfahrzeugtechnik bereits bekannt, insbesondere auch in der Form von Wendelantennen. Solche Wendelantennen werden üblicherweise hergestellt, indem ein Stab aus einem elektrisch nichtleitenden Material mit einem Draht wendeiförmig umwickelt wird. Weiter bekannt ist aus der Funkschau 13/83, Seite 45, Bild 3 eine Wendelantenne, bei der ein nichtleitendes Trägermaterial mit einem Leitermaterial galvanisch beschichtet und anschließend geätzt wird. Diese Herstellungsverfahren sind relativ aufwands- und kostenintensiv.The invention relates to a method for producing a rod antenna according to the preamble of the main claim. Rod antennas are already known from the field of motor vehicle technology, in particular also in the form of helical antennas. Such helical antennas are usually produced by helically wrapping a wire made of an electrically non-conductive material with a wire. Also known from Funkschau 13/83, page 45, Figure 3 is a helical antenna in which a non-conductive carrier material is galvanically coated with a conductor material and then etched. These manufacturing processes are relatively complex and expensive.
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Verfahren mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß eine Stabantenne sehr preisgünstig und aufwandsarm, aber außerdem auch in beliebiger Länge herstellbar ist. Des weiteren ist das Verfahren dazu geeignet, verschiedene Antennenarten mit derselben Vorrichtung herzustellen. Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Verfahrens möglich.The method according to the invention with the characterizing features of the main claim has the advantage that a rod antenna is very inexpensive and inexpensive, but also can be produced in any length. Furthermore, the method is suitable for producing different types of antennas with the same device. Advantageous further developments and improvements of the method specified in the main claim are possible through the measures listed in the subclaims.
Besonders vorteilhaft ist es, eine Paste auszuwählen, die nach dem Aufbringen in einen ihre Form beibehaltenen Zustand übergeht und, diese Paste mittels einer Düse auf den Stab aufzutragen. Dadurch entfällt ein zusätzlicher Verfestigungsschritt für die Paste und durch verschiedene Düsenformen sind variable Pastenstrangdurchmesser für verschiedene Antennen auf sehr einfache Weise herstellbar.It is particularly advantageous to select a paste which, after being applied, changes to a state which has retained its shape, and to apply this paste to the rod by means of a nozzle. This eliminates the need for an additional solidification step for the paste, and different nozzle shapes make it possible to produce variable paste strand diameters for different antennas in a very simple manner.
Durch das Aufbringen der Paste in Wendelform läßt sich der Vorteil erzielen, daß elektrische und mechanische Eigenschaften der Antenne wie z.B. die Richtcharakteristik, die Frequenzselektivität, aber auch die Abmessungen der Antenne variiert werden können.Applying the paste in the form of a coil has the advantage that electrical and mechanical properties of the antenna, such as the directional characteristic, the frequency selectivity, but also the dimensions of the antenna can be varied.
Ebenso vorteilhaft ist es, den Stab einer translatorischen und rotatorischen Bewegung zu unterziehen und die Düse örtlich festzuhalten, da zur Herstellung einer Wendelantenne dieser Antrieb des Stabes einfacher zu realisieren ist, als ein entsprechender Antrieb der Düse.It is also advantageous to subject the rod to a translatory and rotary movement and to hold the nozzle in place, since this drive of the rod is easier to implement than a corresponding drive of the nozzle for producing a helical antenna.
Die Verwendung von Silberleitlack als aufzutragende Paste bietet hervorragende für Antennen geeignete elektrische Eigenschaften und gleichzeitig eine gute Verarbeitbarkeit in Pastenform.The use of conductive silver lacquer as a paste to be applied offers excellent electrical properties suitable for antennas and at the same time good processability in paste form.
Eine teilweise Entfernung der Paste vom Stab kann in vorteilhafter Weise für eine nachträgliche Veränderung der elektrischen Eigenschaften der Antenne genutzt werden. Die Entfernung der Paste mittels einer Säure oder auf mechanischem oder thermischem Wege stellen dabei besonders kostengünstig und aufwandsarm zu realisierende Verfahren dar.Partial removal of the paste from the rod can advantageously be used for a subsequent change in the electrical properties of the antenna. The removal of the paste by means of an acid or by mechanical or thermal means is particularly important are cost-effective and inexpensive to implement.
Der Überzug des beschichteten Stabes mit einer Schutzschicht dient in vorteilhafter Weise dem Schutz der Stabantenne vor Umwelteinflüssen.The coating of the coated rod with a protective layer advantageously serves to protect the rod antenna from environmental influences.
Die Verwendung einer flüssigen, aushärtbaren Isolatormasse für die Schutzschicht stellt insofern einen Vorteil dar, als es sich um ein sehr kostengünstiges Verfahren handelt und dieses Verfahren außerdem geeignet ist, direkt im Anschluß an das Beschichten des Stabes mit der Paste ausgeführt zu werden.The use of a liquid, curable insulator compound for the protective layer is an advantage in that it is a very inexpensive method and this method is also suitable for being carried out directly after coating the rod with the paste.
Das Herstellen des nichtleitenden Stabes aus einer Trägermasse und Glasfasern ist als vorteilhafte Ausgestaltung zu werten, da es sich auch hier um eine sehr kostengünstige Herstellungsmethode handelt, die außerdem geeignet ist, Antennen in beliebiger Länge zu fertigen.The production of the non-conductive rod from a carrier mass and glass fibers is to be considered as an advantageous embodiment, since this is also a very inexpensive production method which is also suitable for producing antennas of any length.
Durch die Verwendung einer an der Oberfläche des Stabes haftenden Paste erübrigt es sich in vorteilhafter Weise, zusätzlich einen Kleber für die Fixierung der Paste auf dem Stab vorzusehen.The use of a paste adhering to the surface of the rod advantageously makes it unnecessary to additionally provide an adhesive for fixing the paste to the rod.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Figur zeigt eine Anordnung zum Herstellen einer Stabantenne mit einer Wendel.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The figure shows an arrangement for producing a rod antenna with a helix.
Beschreibung des Ausführungsbeispielε In der Figur ist eine Anordnung dargestellt, mittels derer eine Wendelantenne hergestellt werden kann. Glasfasern 3 werden zusammen mit einer Trägermasse 2 einem Extruder 8 zugeführt, wo die beiden Komponenten miteinander verbunden werden. Der Verbund aus Glasfasern 3 und Trägermasse 2 wird anschließend ausgehärtet und tritt dann in Form eines elektrisch nichtleitenden Stabes 1 aus dem Extruder 8 aus. Daraufhin wird der elektrisch nichtleitende Stab 1 mittels eines Reibradantriebs 9 in translatorischer Richtung und mittels eines weiteren Reibradantriebs 10 in eine rotatorische Bewegung versetzt. Der so bewegte elektrisch nichtleitende Stab 1 wird im darauffolgenden Verfahrensschritt mittels einer Düse 6 mit einer elektrisch leitfähigen Paste 5 beschichtet. Durch die rotatorische und translatorische Bewegung des elektrisch nichtleitendenDescription of the embodiment The figure shows an arrangement by means of which a helical antenna can be produced. Glass fibers 3 are fed together with a carrier mass 2 to an extruder 8, where the two components are connected to one another. The composite of glass fibers 3 and carrier mass 2 is then cured and then emerges from the extruder 8 in the form of an electrically non-conductive rod 1. Thereupon, the electrically non-conductive rod 1 is set into a rotational movement by means of a friction wheel drive 9 in the translational direction and by means of a further friction wheel drive 10. The electrically non-conductive rod 1 thus moved is coated with an electrically conductive paste 5 in the subsequent method step by means of a nozzle 6. Due to the rotational and translational movement of the electrically non-conductive
Stabes 1 entsteht so eine wendeiförmige Beschichtung des elektrisch nichtleitenden Stabes 1 mit der elektrisch leitfähigen Paste 5. Die Paste 5 wird nun auf dem Stab 1 ausgehärtet. Der so beschichtete Stab 1 gelangt weiter zu einer Meißelanordnung 11, die eine spannabhebendeRod 1 is thus a helical coating of the electrically non-conductive rod 1 with the electrically conductive paste 5. The paste 5 is now cured on the rod 1. The rod 1 coated in this way arrives at a chisel arrangement 11 which has a clamping action
Bearbeitung von Teilen der auf dem Stab 1 befindlichen ausgehärteten elektrisch leitfähigen Paste 5 bewirken. Nach diesem Verfahrensschritt gelangt der wendeiförmig beschichtete, elektrisch nichtleitende Stab 1 zu einem weiteren Extruder 12, wo der elektrisch nichtleitende Stab 1 mit der darauf befindlichen elektrisch leitfähigen Paste 5 mit einer flüssigen, aushärtbaren Isolatormasse 4 beschichtet wird. Durch Aushärten im Extruder 12 entsteht so eine Schutzschicht 7 auf dem elektrisch nichtleitenden Stab 1. Aus dem Extruder 12 tritt somit als Produkt desProcessing of parts of the hardened, electrically conductive paste 5 located on the rod 1. After this process step, the helically coated, electrically non-conductive rod 1 reaches a further extruder 12, where the electrically non-conductive rod 1 with the electrically conductive paste 5 thereon is coated with a liquid, curable insulator compound 4. By hardening in the extruder 12, a protective layer 7 is thus formed on the electrically non-conductive rod 1. The extruder 12 thus emerges as the product of
Verfahrens eine mit der Schutzschicht 7 beschichtete, aus dem elektrisch nichtleitenden Stab 1 und der wendeiförmig darauf aufgebrachten, ausgehärteten, elektrisch leitfähigen Paste 5 bestehende Wendelantenne. Durch unterschiedliche Formen und Durchmesser der Düse 6, unterschiedliche Fortbewegungsgeschwindigkeiten des elektrisch nichtleitenden Stabes mittels der Reibradantriebe 9, 10, sowie unterschiedliche Ausgestaltung der Meißelanordnung 11 bzw. deren Weglassen sind verschiedeneProcess a spiral antenna coated with the protective layer 7, consisting of the electrically non-conductive rod 1 and the helically applied, hardened, electrically conductive paste 5 applied thereon. Different shapes and diameters of the nozzle 6, different speeds of travel of the electrically non-conductive rod by means of the friction wheel drives 9, 10, and different design of the chisel arrangement 11 or its omission are different
Antennen herstellbar. Dieses Verfahren ist insbesondere für die Fertigung von Stabantennen in beliebiger Länge geeignet. Anstelle der Reibradantriebe 9, 10 sind beliebige andere Antriebsvorrichtungen verwendbar. Durch Wegfall des rotatorischen Antriebs kann auch eine Stabantenne mit einem geraden Leiter hergestellt werden. Besonders geeignet für die elektrisch leitfähige Paste 5 ist Silberleitlack, da er die für die Antennentechnik am besten geeigneten elektrischen Eigenschaften aufweist und gleichzeitig gut als aushärtbare Paste 5 einsetzbar ist. Anstelle derAntennas can be manufactured. This method is particularly suitable for the manufacture of rod antennas of any length. Any other drive devices can be used instead of the friction wheel drives 9, 10. By eliminating the rotary drive, a rod antenna with a straight conductor can also be produced. Silver conductive lacquer is particularly suitable for the electrically conductive paste 5, since it has the electrical properties that are most suitable for antenna technology and, at the same time, can be used well as curable paste 5. Instead of
Meißelanordnung 11 ist ebenso vorgesehen, die elektrisch leitfähige Paste 5 thermisch z.B. mittels eines Lasers oder mittels einer Säure zu bearbeiten. Diese Bearbeitung kann bei einer exakt vorgeformten Düse auch entfallen. Als Schutzschicht 7 ist ebenso die Verwendung einesChisel arrangement 11 is also provided, the electrically conductive paste 5 thermally e.g. to be processed by means of a laser or by means of an acid. This processing can also be omitted with a precisely pre-shaped nozzle. As a protective layer 7 is also the use of a
SchrumpfSchlauches vorgesehen. Die elektrisch leitfähige Paste 5 ist außerdem so gewählt, daß sie an der Oberfläche des elektrisch nichtleitenden Stabes 1 haftet. Sollte die Haftfähigkeit nicht bestehen, so muß zusätzlich zwischen elektrisch nichtleitendem Stab 1 und der elektrisch leitfähigen Paste 5 ein Klebstoff eingefügt werden. Shrink tubing provided. The electrically conductive paste 5 is also selected so that it adheres to the surface of the electrically non-conductive rod 1. If the adhesive does not exist, an adhesive must also be inserted between the electrically non-conductive rod 1 and the electrically conductive paste 5.

Claims

Ansprüche Expectations
1. Verfahren zum Herstellen einer Stabantenne, dadurch gekennzeichnet, daß ein elektrisch nichtleitender Stab (1) mit einer elektrisch leitfähigen Paste (5) auf wenigstens einem Teil seiner Oberfläche entlang seiner Stabachse beschichtet wird.1. A method for producing a rod antenna, characterized in that an electrically non-conductive rod (1) with an electrically conductive paste (5) is coated on at least part of its surface along its rod axis.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß für die elektrisch leitfähige Paste (5) ein annähernd flüssiges Material verwendet wird, das nach dem Aufbringen auf den elektrisch nichtleitenden Stab (1) in einen seine2. The method according to claim 1, characterized in that an approximately liquid material is used for the electrically conductive paste (5), which after being applied to the electrically non-conductive rod (1) in one
Form beibehaltenden Zustand übergeht und daß die elektrisch leitfähige Paste (5) mittels einer Düse (6) in annähernd flüssiger Form auf den elektrisch nichtleitenden Stab (1) aufgebracht wird.Form maintaining state passes and that the electrically conductive paste (5) by means of a nozzle (6) in approximately liquid form is applied to the electrically non-conductive rod (1).
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die elektrisch leitfähige Paste (5) wendeiförmig entlang der Stabachse auf den elektrisch nichtleitenden Stab (1) aufgebracht wird.3. The method according to claim 1 or 2, characterized in that the electrically conductive paste (5) is applied helically along the rod axis on the electrically non-conductive rod (1).
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Düse (6) während des Auftragens der elektrisch leitfähigen Paste (5) örtlich festgehalten wird, während der elektrisch leitfähige Stab (1) gleichzeitig translatorisch und rotatorisch bewegt wird.4. The method according to claim 3, characterized in that the nozzle (6) is locally held during the application of the electrically conductive paste (5) during the electrically conductive rod (1) is moved translationally and rotationally at the same time.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als elektrisch leitfähige Paste (5) ein Silberleitlack verwendet wird.5. The method according to any one of claims 1 to 4, characterized in that a silver conductive lacquer is used as the electrically conductive paste (5).
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die auf dem elektrisch nichtleitenden Stab (1) aufgebrachte elektrisch leitfähige Paste (5) teilweise wieder vom elektrisch nichtleitenden Stab (1) entfernt wird.6. The method according to any one of claims 1 to 5, characterized in that the electrically conductive paste (5) applied to the electrically non-conductive rod (1) is partially removed again from the electrically non-conductive rod (1).
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die teilweise Entfernung der elektrisch leitfähige Paste (5) mechanisch, thermisch oder mittels einer Säure erfolgt.7. The method according to claim 6, characterized in that the partial removal of the electrically conductive paste (5) is carried out mechanically, thermally or by means of an acid.
8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der elektrisch nichtleitende Stab (1) mit der darauf aufgebrachten elektrisch leitfähigen Paste (5) mit einer Schutzschicht (7) überzogen wird.8. The method according to any one of claims 1 to 7, characterized in that the electrically non-conductive rod (1) with the electrically conductive paste (5) applied thereon is coated with a protective layer (7).
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß als Schutzschicht (7) eine flüssige, aushärtbare Isolatormasse (4) verwendet wird.9. The method according to claim 8, characterized in that a liquid, curable insulator composition (4) is used as the protective layer (7).
10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der elektrisch nichtleitende Stab (1) vor dem Aufbringen der elektrisch leitfähigen Paste (5) durch Verbinden einer aushärtbaren Trägermasse (2) mit Glasfasern (3) hergestellt wird. 10. The method according to any one of claims 1 to 9, characterized in that the electrically non-conductive rod (1) before the application of the electrically conductive paste (5) by connecting a curable carrier mass (2) with glass fibers (3) is produced.
11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß eine elektrisch leitfähige Paste (5) verwendet wird, die auf der Oberfläche des elektrisch nichtleitenden Stabes (1) haftet. 11. The method according to any one of claims 1 to 10, characterized in that an electrically conductive paste (5) is used which adheres to the surface of the electrically non-conductive rod (1).
PCT/DE1996/000712 1995-05-09 1996-04-24 Process for producing a rod aerial WO1996036089A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19516889.5 1995-05-09
DE1995116889 DE19516889A1 (en) 1995-05-09 1995-05-09 Method of making a rod antenna

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69700037T2 (en) * 1997-02-28 1999-04-15 Top Glass S.P.A., Pioltello, Mailand/Milano Method for producing rod antennas and a rod antenna produced in this way
JP2000341024A (en) 1999-05-13 2000-12-08 K Cera Inc Helical antenna, its manufacturing facility and its manufacture

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GB2036237A (en) * 1978-12-09 1980-06-25 Feist Artus Improved thermally-conductive pipe
EP0048788A1 (en) * 1980-09-25 1982-04-07 Robert Bosch Gmbh Rod antenna, in particular for VHF broadcast reception
JPS5782022A (en) * 1980-11-10 1982-05-22 Dainippon Ink & Chem Inc Method for continuously manufacturing compound pipe
JPS6265501A (en) * 1985-09-17 1987-03-24 Dx Antenna Co Ltd Antenna element and its manufacture
JPS634212A (en) * 1986-06-25 1988-01-09 Ube Nitto Kasei Kk Heat-resisting reinforced optical fiber and its manufacture
FR2607748A1 (en) * 1986-12-05 1988-06-10 Sogex Sa Process for preparing a long and thin element in the form of a helix, made from synthetic resin, to be attached in a tubular body, by releasing induced internal tensile stresses
EP0336738A2 (en) * 1988-04-06 1989-10-11 BICC Public Limited Company Manufacture of a circumferentially rigid flexible tube or an optical cable

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2036237A (en) * 1978-12-09 1980-06-25 Feist Artus Improved thermally-conductive pipe
EP0048788A1 (en) * 1980-09-25 1982-04-07 Robert Bosch Gmbh Rod antenna, in particular for VHF broadcast reception
JPS5782022A (en) * 1980-11-10 1982-05-22 Dainippon Ink & Chem Inc Method for continuously manufacturing compound pipe
JPS6265501A (en) * 1985-09-17 1987-03-24 Dx Antenna Co Ltd Antenna element and its manufacture
JPS634212A (en) * 1986-06-25 1988-01-09 Ube Nitto Kasei Kk Heat-resisting reinforced optical fiber and its manufacture
FR2607748A1 (en) * 1986-12-05 1988-06-10 Sogex Sa Process for preparing a long and thin element in the form of a helix, made from synthetic resin, to be attached in a tubular body, by releasing induced internal tensile stresses
EP0336738A2 (en) * 1988-04-06 1989-10-11 BICC Public Limited Company Manufacture of a circumferentially rigid flexible tube or an optical cable

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Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 257 (E - 534) 20 August 1987 (1987-08-20) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 203 (P - 715) 11 June 1988 (1988-06-11) *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 167 (M - 153) 31 August 1982 (1982-08-31) *

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