EP0048788A1 - Rod antenna, in particular for VHF broadcast reception - Google Patents

Rod antenna, in particular for VHF broadcast reception Download PDF

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Publication number
EP0048788A1
EP0048788A1 EP81102262A EP81102262A EP0048788A1 EP 0048788 A1 EP0048788 A1 EP 0048788A1 EP 81102262 A EP81102262 A EP 81102262A EP 81102262 A EP81102262 A EP 81102262A EP 0048788 A1 EP0048788 A1 EP 0048788A1
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EP
European Patent Office
Prior art keywords
rod
antenna according
rod antenna
length
windings
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.)
Withdrawn
Application number
EP81102262A
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German (de)
French (fr)
Inventor
Horst Dörrie
Kurt Klinkwitz
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Robert Bosch GmbH
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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 EP0048788A1 publication Critical patent/EP0048788A1/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—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 is based on a rod antenna according to the preamble of the main claim.
  • a rod antenna is already known (US Pat. No. 2,938,210) which has an insulating rod which tapers towards the upper end of the antenna and which bears a helical wire winding over almost its entire length.
  • the winding end at the upper end of the rod is passed through the rod and electrically connected to a sleeve-shaped connecting piece arranged on the lower end of the rod.
  • the rod and wire winding are surrounded by a tubular plastic covering.
  • Such a rod antenna usually has a length of about one meter if it is to be used as an FM receiving antenna. If this antenna is to be used as a vehicle antenna, it is desirable to shorten the antenna length as much as possible, for example to 40 centimeters. In this case, however, such an antenna has a loss of approximately 14 to 20 dB in the FM range compared to a simple rod antenna of approximately 95 centimeters in length.
  • the rod antenna according to the invention with the characterizing features of the main claim has the advantage that, as a comparison of the directional diagrams and the frequency spectra of the simple rod antenna and the rod antenna according to the invention shows, the performance of both antennas can be regarded as approximately equivalent. As a rule, there is even no need for an amplifier, which would otherwise be used with shortened rod antennas and which leads to a relatively high noise component.
  • a rod antenna is particularly advantageous, in which the elongated wire length of the windings located on the two longitudinal parts of the rod is each about a quarter of the mean wavelength X. Under this condition, the rod antenna according to the invention has an optimal reception performance.
  • a rod antenna according to the invention has an insulating rod 10, for example made of glass fiber, which tapers conically towards the upper end of the antenna and has two wire windings 11, 12 wound in opposite directions over a length 1, which corresponds to almost the entire length of the rod.
  • the windings 11, 12 are produced by bifilar winding of a wire which is subsequently secured by adhesive or lacquer.
  • the length parts a, b correspond approximately to half the length of the total winding length 1.
  • the winding length 1 of the rod antenna corresponds to approximately one eighth of the medium wavelength, that is to say approximately 40 cm for a rod antenna for the FM radio range.
  • the wire of the wire windings 11 and 12 each has an elongated length of about a quarter of the middle wavelength.
  • the lower winding 12 ends at a distance c from the lower end of the insulating rod 10.
  • a connecting piece 14 is fastened with its sleeve-shaped extension 15; see. Fig. 2.
  • the free end 16 of the lower winding 12 is electrically conductively connected to the sleeve-shaped part 15.
  • the windings 11 and 12, the insulating rod 10 and the sleeve-shaped part 15 of the connector 14 are jointly surrounded by an elastic protective layer 17, which is formed, for example, from a heat-shrinking plastic tube
  • the connecting piece 14 is used to fasten the rod antenna to a foot piece which is omitted in the drawing for the sake of clarity and which, for example, belongs to a body of a motor vehicle and is connected to a motor vehicle receiver via a cable.
  • the rod antenna according to the invention is provided with an elastic intermediate piece 20 at its lower end; see. Fig. 3.
  • the elastic intermediate piece contains a coil spring 21, one end of which is plugged into a pin-shaped extension 22 at the free end of the connector 14 and the other end onto a pin-shaped extension 23 of a further connector 24.
  • the connecting piece 14, the helical spring 21 and the further connecting piece 24 are surrounded by a highly elastic layer 25, which is produced, for example, by pressing using a polyvinyl chloride material.
  • the further connector 24 has a connector 26 which is not covered by the highly elastic layer 25 and forms the electrical connection of the rod antenna.
  • a protective cap 27 is located on the upper end of the rod antenna.

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  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

Es wird eine Stabantenne vorgeschlagen, die insbesondere für den UKW-Rundfunkempfang dient. Die Stabantenne umfaßt einen zu ihrem oberen Ende hin konisch verjüngten Isolierstoffstab (10), der zwei Wicklungen (11, 12) mit entgegengesetztem Wicklungssinn trägt. Der bewickelte Teil des Isolierstoffstabes hat eine Länge (1) von etwa einem Achtel der mittleren Wellenlänge (λ). Die gestreckten Drahtlängen der beiden Wicklungen betragen je etwa ein Viertel der mittleren Wellenlänge.A rod antenna is proposed, which is used in particular for VHF radio reception. The rod antenna comprises an insulating material rod (10) which tapers conically towards its upper end and carries two windings (11, 12) with opposite winding directions. The wound part of the insulating material rod has a length (1) of approximately one eighth of the central wavelength (λ). The stretched wire lengths of the two windings are each about a quarter of the middle wavelength.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Stabantenne nach der Gattung des Hauptanspruchs.The invention is based on a rod antenna according to the preamble of the main claim.

Es ist schon eine Stabantenne bekannt (US-PS 2,938,210), die einen zum oberen Ende der Antenne hin verjüngten Isolierstoffstab aufweist, der auf annähernd seiner gesamten Länge eine wendelförmige Drahtwicklung trägt.A rod antenna is already known (US Pat. No. 2,938,210) which has an insulating rod which tapers towards the upper end of the antenna and which bears a helical wire winding over almost its entire length.

Das Wicklungsende am oberen Ende des Stabes ist durch den Stab hindurchgeführt und mit einem auf dem unteren Stabende angeordneten hülsenförmigen Anschlußstück elektrisch verbunden. Stab und Drahtwicklung sind von einer schlauchförmigen Kunststoffumhüllung umgeben.The winding end at the upper end of the rod is passed through the rod and electrically connected to a sleeve-shaped connecting piece arranged on the lower end of the rod. The rod and wire winding are surrounded by a tubular plastic covering.

Eine derartige Stabantenne hat gewöhnlich, wenn sie als UKW-Empfangsantenne Verwendung finden soll, eine,Länge von etwa einem Meter. Soll diese Antenne als Fahrzeugantenne eingesetzt werden, so ist es erwünscht, die Antennenlänge möglichst stark zu verkürzen, zum Beispiel auf 40 Zentimeter. Dann weist eine derartige Antenne allerdings im UKW-Bereich einen Verlust von etwa 14 bis 20 dB gegenüber einer einfachen Stabantenne von ca. 95 Zentimetern Länge auf.Such a rod antenna usually has a length of about one meter if it is to be used as an FM receiving antenna. If this antenna is to be used as a vehicle antenna, it is desirable to shorten the antenna length as much as possible, for example to 40 centimeters. In this case, however, such an antenna has a loss of approximately 14 to 20 dB in the FM range compared to a simple rod antenna of approximately 95 centimeters in length.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Stabantenne mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß, wie ein Vergleich der Richtdiagramme und der Frequenzspektren der einfachen Stabantenne und der erfindungsgemäßen Stabantenne zeigt, beide Antennen leistungsmäßig als annähernd gleichwertig anzusehen sind. In der Regel kann sogar auf einen Verstärker, der sonst bei verkürzten Stabantennen Anwendung findet und zu einem verhältnismäßig hohen Rauschanteil führt, verzichtet werden.The rod antenna according to the invention with the characterizing features of the main claim has the advantage that, as a comparison of the directional diagrams and the frequency spectra of the simple rod antenna and the rod antenna according to the invention shows, the performance of both antennas can be regarded as approximately equivalent. As a rule, there is even no need for an amplifier, which would otherwise be used with shortened rod antennas and which leads to a relatively high noise component.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Stabantenne möglich. Besonders vorteilhaft ist eine Stabantenne, bei der die gestreckte Drahtlänge der auf den beiden Längenteilen des Stabes befindlichen Wicklungen je etwa ein Viertel der mittleren Wellenlänge X beträgt. Unter dieser Voraussetzung weist die erfindungsgemäße Stabantenne eine optimale Empfangsleistung auf.The measures listed in the subclaims permit advantageous developments and improvements of the rod antenna specified in the main claim. A rod antenna is particularly advantageous, in which the elongated wire length of the windings located on the two longitudinal parts of the rod is each about a quarter of the mean wavelength X. Under this condition, the rod antenna according to the invention has an optimal reception performance.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung an Hand mehrerer Figuren dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Zeichnung zeigt in

  • Fig. 1 eine Ansicht einer erfindungsgemäßen Stabantenne mit einem konischen Isolierstoffstab und einer darauf befindlichen bifilaren Drahtwicklung,
  • Fig. 2 eine Schnittansicht einer erfindungsgemäßen Stabantenne, bei der der Isolierstoffstab und die darauf befindliche Drahtwicklung von einem schrumpffähigen Schlauch umgeben sind und das untere Ende des Antennenstabes ein Anschlußstück trägt, und
  • Fig. 3 eine weitere Ausführungsform der erfindungsgemäßen Stabantenne, bei der das untere Ende des Isolierstoffstabes über ein elastisches Zwischenstück mit einem elektrischen Anschlußstück verbunden ist.
Exemplary embodiments of the invention are shown in the drawing using several figures and are explained in more detail in the description below. The drawing shows in
  • 1 is a view of a rod antenna according to the invention with a conical insulating rod and a bifilar wire winding thereon,
  • Fig. 2 is a sectional view of a rod antenna according to the invention, in which the insulating rod and the wire winding thereon are surrounded by a shrinkable tube and the lower end of the antenna rod carries a connector, and
  • Fig. 3 shows a further embodiment of the rod antenna according to the invention, in which the lower end of the insulating rod is connected to an electrical connector via an elastic intermediate piece.

Beschreibung der ErfindungDescription of the invention

Eine erfindungsgemäße Stabantenne weist einen zum oberen Ende der Antenne konisch verjüngten Isolierstoffstab 10, zum Beispiel aus Glasfiber, auf, der auf einer Länge 1, die fast der gesamten Länge des Stabes entspricht, zwei gegensinnig gewikkelte Drahtwicklungen 11, 12 aufweist. Die Wicklungen 11, 12 sind in dem vorliegenden Ausführungsbeispiel durch bifilares Aufwickeln eines anschließend durch Klebstoff oder Lack gesicherten Drahtes entstanden. Die Längenteile a, b entsprechen etwa je der halben Länge der gesamten Wicklungslänge 1.A rod antenna according to the invention has an insulating rod 10, for example made of glass fiber, which tapers conically towards the upper end of the antenna and has two wire windings 11, 12 wound in opposite directions over a length 1, which corresponds to almost the entire length of the rod. In the present exemplary embodiment, the windings 11, 12 are produced by bifilar winding of a wire which is subsequently secured by adhesive or lacquer. The length parts a, b correspond approximately to half the length of the total winding length 1.

Die Wicklungslänge 1 der Stabantenne entspricht etwa einem Achtel der mittleren Wellenlänge, das heißt etwa 40 cm bei einer Stabantenne für den UKW-Rundfunkbereich. Der Draht der Drahtwicklungen 11 und 12 hat je eine gestreckte Länge von etwa einem Viertel der mittleren Wellenlänge.The winding length 1 of the rod antenna corresponds to approximately one eighth of the medium wavelength, that is to say approximately 40 cm for a rod antenna for the FM radio range. The wire of the wire windings 11 and 12 each has an elongated length of about a quarter of the middle wavelength.

Die untere Wicklung 12 endet in einem Abstand c von dem unteren Ende des Isolierstoffstabes 10. Auf dem nicht von einer Wicklung bedeckten Teil 13 des Isolierstoffstabes 10 ist ein Anschlußstück 14 mit seinem hülsenförmigen Ansatz 15 befestigt; vgl. Fig. 2. Das freie Ende 16 der unteren Wicklung 12 ist mit dem hülsenförmigen Teil 15 elektrisch leitend verbunden.The lower winding 12 ends at a distance c from the lower end of the insulating rod 10. On the part 13 of the insulating rod 10 not covered by a winding, a connecting piece 14 is fastened with its sleeve-shaped extension 15; see. Fig. 2. The free end 16 of the lower winding 12 is electrically conductively connected to the sleeve-shaped part 15.

Die Wicklungen 11 und 12, der Isolierstoffstab 10 und der hülsenförmige Teil 15 des Anschlußstücks 14 sind gemeinsam von einer elastischen Schutzschicht 17 umgeben, die beispielsweise aus einem bei Wärme schrumpfenden Kunststoffschlauch gebildet wird Das Anschlußstück 14 dient zum Befestigen der Stabantenne an einem in der Zeichnung der übersichtlichkeit halber weggelassenen Fußstück, das zum Beispiel zu einer Karosserie eines Kraftfahrzeugs gehört und das über ein Kabel mit einem Kraftfahrzeugempfänger verbunden ist.The windings 11 and 12, the insulating rod 10 and the sleeve-shaped part 15 of the connector 14 are jointly surrounded by an elastic protective layer 17, which is formed, for example, from a heat-shrinking plastic tube The connecting piece 14 is used to fasten the rod antenna to a foot piece which is omitted in the drawing for the sake of clarity and which, for example, belongs to a body of a motor vehicle and is connected to a motor vehicle receiver via a cable.

Sofern der Isolierstoffstab 10 keine ausreichende Elastizität aufweist, um beim Durchfahren einer automatischen Fahrzeug-Waschanlage nicht beschädigt zu werden, wird die erfindungsgemäße Stabantenne an ihrem unteren Ende mit einem elastischen Zwischenstück 20 versehen; vgl. Fig. 3. Das elastische Zwischenstück enthält eine Schraubenfeder 21, deren eines Ende auf einen stiftförmigen Ansatz 22 am freien Ende des Anschlußstücks 14 und deren anderes Ende auf einen stiftförmigen Ansatz 23 eines weiteren Anschlußstücks 24 gesteckt ist. Das Anschlußstück 14, die Schraubenfeder 21 und das weitere Anschlußstück 24 sind von einer hochelastischen Schicht 25 umgeben, die beispielsweise durch Umpressen mittels eines Polyvinylchlorid-Materials entsteht.If the insulating rod 10 does not have sufficient elasticity so as not to be damaged when driving through an automatic vehicle washing system, the rod antenna according to the invention is provided with an elastic intermediate piece 20 at its lower end; see. Fig. 3. The elastic intermediate piece contains a coil spring 21, one end of which is plugged into a pin-shaped extension 22 at the free end of the connector 14 and the other end onto a pin-shaped extension 23 of a further connector 24. The connecting piece 14, the helical spring 21 and the further connecting piece 24 are surrounded by a highly elastic layer 25, which is produced, for example, by pressing using a polyvinyl chloride material.

Das weitere Anschlußstück 24 besitzt einen Anschlußteil 26, der von der hochelastischen Schicht 25 nicht erfaßt wird und den elektrischen Anschluß der Stabantenne bildet.The further connector 24 has a connector 26 which is not covered by the highly elastic layer 25 and forms the electrical connection of the rod antenna.

Auf dem oberen Ende der Stabantenne befindet sich eine Schutzkappe 27.A protective cap 27 is located on the upper end of the rod antenna.

Claims (12)

1. Stabantenne, insbesondere für UKW-Rundfunkempfang, aus einem zum oberen Ende der Antenne hin verjüngten Isolierstoffstab, der über annähernd der gesamten Länge eine wendelförmige Drahtwicklung trägt, dadurch gekennzeichnet, daß der Stab (10) auf einem ersten Längenteil (a) eine erste Wicklung (11) und auf einem zweiten Längenteil (b) eine zweite Wicklung (-12) trägt, daß die beiden Wicklungen gegensinnig gewickelt sind, daß die einander zugekehrten Enden der Wicklungen miteinander verbunden sind und daß der mit Draht bewickelte Teil des Stabes eine Länge (l) von etwa einem Achtel der mittleren Wellenlänge (X) aufweist.1. rod antenna, especially for VHF radio reception, from a tapered towards the upper end of the antenna isolating rod, which carries a helical wire winding over almost the entire length, characterized in that the rod (10) on a first length part (a) a first Winding (11) and on a second length part (b) carries a second winding (-12) that the two windings are wound in opposite directions, that the mutually facing ends of the windings are connected to each other and that the wire-wound part of the rod has a length (l) of approximately one eighth of the mean wavelength (X). 2. Stabantenne nach Anspruch 1, dadurch gekennzeichnet, daß die gestreckte Drahtlänge der beiden Wicklungen (11, 12) je etwa ein Viertel der mittleren Wellenlänge (A) beträgt.2. rod antenna according to claim 1, characterized in that the elongated wire length of the two windings (11, 12) is each about a quarter of the average wavelength (A). 3. Stabantenne nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Wicklungen (11, 12) aus einem bifilar gewickelten Draht bestehen.3. rod antenna according to claim 1, characterized in that the two windings (11, 12) consist of a bifilar wound wire. 4. Stabantenne nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Wicklungen (11, 12) mittels eines Klebstoffes oder Lackes auf dem Isolierstoffstab (10) festgelegt sind.4. rod antenna according to claim 1 to 3, characterized in that the windings (11, 12) are fixed by means of an adhesive or paint on the insulating rod (10). 5. Stabantenne nach einem der Ansprüche 1, 3 oder 4, dadurch gekennzeichnet, daß der Isolierstoffstab (10) mit den beiden Wicklungen (11, 12) von einer elastischen Schutzschicht. (17) umgeben ist.5. rod antenna according to one of claims 1, 3 or 4, characterized in that the insulating rod (10) with the two windings (11, 12) of an elastic protective layer. (17) is surrounded. 6. Stabantenne nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß ein unterer Endbereich (13) des Isolierstoffstabes (10) unbewickelt ist und einen hülsenförmigen Ansatz (15) eines Anschlußstücks (14) trägt, das mit dem freien Ende (16) der unteren Wicklung (12) elektrisch verbunden ist.6. rod antenna according to one of claims 1 to 5, characterized in that a lower end region (13) of the insulating rod (10) is unwrapped and carries a sleeve-shaped extension (15) of a connecting piece (14) which with the free end (16) the lower winding (12) is electrically connected. 7. Stabantenne nach Anspruch 5, dadurch gekennzeichnet, daß die elastische Schutzschicht (17) zusätzlich das Anschlußstück (14) auf einem Teil seiner Länge umschließt.7. rod antenna according to claim 5, characterized in that the elastic protective layer (17) additionally encloses the connector (14) over part of its length. 8. Stabantenne nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Anschlußstück (14) über ein elastisches Zwischenstück (20) mit einem weiteren Anschlußstück (24) mechanisch und elektrisch verbunden ist.8. rod antenna according to one of claims 1 to 5, characterized in that the connecting piece (14) via an elastic intermediate piece (20) with a further connecting piece (24) is mechanically and electrically connected. 9. Stabantenne nach Anspruch 8, dadurch gekennzeichnet, daß das elastische Zwischenstück (20) eine Schraubenfeder (21) enthält, deren eines Ende mit dem Anschlußstück (14) und deren anderes Ende mit dem weiteren Anschlußstück (24) mechanisch und elektrisch verbunden ist.9. rod antenna according to claim 8, characterized in that the elastic intermediate piece (20) contains a coil spring (21), one end of which is mechanically and electrically connected to the connecting piece (14) and the other end to the further connecting piece (24). 10. Stabantenne nach Anspruch 9, dadurch gekennzeichnet, daß die Schraubenfeder (21) außen vollständig und die Anschlußstücke (14, 24) zumindest auf einem Teil ihrer Länge von einer hochelastischen Schicht (25) umgeben sind.10. rod antenna according to claim 9, characterized in that the coil spring (21) on the outside completely and the connecting pieces (14, 24) are surrounded at least over part of their length by a highly elastic layer (25). 11. Stabantenne nach Anspruch 1 bis 9, dadurch gekennzeichnet, daß der Isolierstoffstab (10) aus Glasfiber besteht.11. Rod antenna according to claim 1 to 9, characterized in that the insulating rod (10) consists of glass fiber. 12. Stabantenne nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die hochelastische Schicht (25) des elastischen Zwischenstücks (20) aus einem bei Wärme schrumpfenden Polyvinylchlorid-Schlauch besteht.12. Rod antenna according to one of claims 1 to 10, characterized in that the highly elastic layer (25) of the elastic intermediate piece (20) consists of a heat shrinkable polyvinyl chloride tube.
EP81102262A 1980-09-25 1981-03-26 Rod antenna, in particular for VHF broadcast reception Withdrawn EP0048788A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803036084 DE3036084A1 (en) 1980-09-25 1980-09-25 ROD AERIAL, IN PARTICULAR FOR VHF BROADCAST RECEPTION
DE3036084 1980-09-25

Publications (1)

Publication Number Publication Date
EP0048788A1 true EP0048788A1 (en) 1982-04-07

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Application Number Title Priority Date Filing Date
EP81102262A Withdrawn EP0048788A1 (en) 1980-09-25 1981-03-26 Rod antenna, in particular for VHF broadcast reception

Country Status (4)

Country Link
US (1) US4375642A (en)
EP (1) EP0048788A1 (en)
JP (1) JPS5787205A (en)
DE (1) DE3036084A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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WO1996036087A1 (en) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Process for producing a helical aerial and helical aerial
WO1996036089A1 (en) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Process for producing a rod aerial
WO2009156001A1 (en) * 2008-06-26 2009-12-30 Robert Bosch Gmbh Bar antenna
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Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174308U (en) * 1984-04-25 1985-11-19 株式会社ヨコオ Elements of flexible antenna
JPS60180112U (en) * 1984-05-08 1985-11-29 株式会社　バンダイ antenna device
JPS617108U (en) * 1984-06-19 1986-01-17 株式会社ケンウッド flexible antenna
US4725395A (en) * 1985-01-07 1988-02-16 Motorola, Inc. Antenna and method of manufacturing an antenna
DE3919884C2 (en) * 1989-06-19 1994-05-19 Bosch Gmbh Robert Rod-shaped radio antenna
JP2559074B2 (en) * 1990-04-27 1996-11-27 株式会社クリエイティックジャパン Antenna element
FR2694137B1 (en) * 1992-07-21 1994-11-25 Ernest Pizon Antenna.
JP3089933B2 (en) * 1993-11-18 2000-09-18 三菱電機株式会社 Antenna device
WO1996002075A1 (en) * 1994-07-08 1996-01-25 R.A. Miller Industries, Inc. Combined am/fm/cellular telephone antenna system
US5489916A (en) * 1994-08-26 1996-02-06 Westinghouse Electric Corp. Helical antenna having adjustable beam angle
US5668564A (en) * 1996-02-20 1997-09-16 R.A. Miller Industries, Inc. Combined AM/FM/cellular telephone antenna system
US5751251A (en) * 1996-03-20 1998-05-12 Hutchinson; Ronald M. Automotive mobile telephone antenna silencer
WO1998033232A1 (en) * 1997-01-28 1998-07-30 Yokowo Co., Ltd. Antenna for mounting on vehicle, antenna element, and manufacturing method therefor
FR2764123B1 (en) * 1997-05-30 1999-07-30 Tramec RIGID ANTENNA AND CORRESPONDING MANUFACTURING METHOD
US5943026A (en) * 1997-11-20 1999-08-24 The Whitaker Corporation Boot assembly for an antenna
GB2331630B (en) * 1997-11-20 2001-12-05 Nec Technologies Retractable antenna for a mobile telephone
US6297784B1 (en) * 1998-11-02 2001-10-02 Auden Techno Corp. Bi-frequency cellular telephone antenna
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US8339265B2 (en) 2002-01-09 2012-12-25 Sensormatic Electronics, Llc. Method of assigning and deducing the location of articles detected by multiple RFID antennae
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DE102006006923A1 (en) * 2005-10-18 2007-04-19 Hirschmann Car Communication Gmbh Antenna e.g. roof antenna, rod, for vehicle, has wounded coil arranged in passage area from assembly area to support, where end of coil is arranged in recess in support, and end area of spiral spring is pressed on end of coil
US8316156B2 (en) * 2006-02-17 2012-11-20 Intel-Ne, Inc. Method and apparatus for interfacing device drivers to single multi-function adapter
KR100821981B1 (en) * 2007-02-02 2008-04-15 이성철 Dielectrics omnidirection antenna
DE102007038074A1 (en) * 2007-08-11 2009-02-12 Hirschmann Car Communication Gmbh Rod antenna for use on vehicle roof, has outer shell with outer shell regions that are made of different plastics, where elasticity modulus of plastics of one region is greater than that of plastics of other two regions
WO2020081061A1 (en) * 2018-10-16 2020-04-23 Science Applications International Corporation System and method for guarding an antenna from interfering physical objects

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938210A (en) * 1957-09-30 1960-05-24 Edward F Harris Process of fabricating a whip antenna
US2966679A (en) * 1957-11-13 1960-12-27 Edward F Harris Unloaded helical antenna
DE1254203B (en) * 1961-06-09 1967-11-16 Sumitomo Electric Industries Helical antenna
US3383695A (en) * 1965-12-22 1968-05-14 Navy Usa Helical antenna with end distortion to improve polarization purity
DE7316414U (en) * 1973-09-13 Bosch R Elektronik Gmbh Antenna for a radio device built into a vehicle
DE2357542A1 (en) * 1973-11-17 1975-05-22 Bosch Elektronik Gmbh Antenna with flexible rod - comprising helical spring embedded in elastic layer
DE2727900A1 (en) * 1976-06-21 1977-12-29 Nat Res Dev RADIO AND BROADCAST ANTENNA
DE7916011U1 (en) * 1979-06-02 1979-09-13 Robert Bosch Gmbh, 7000 Stuttgart ANTENNA WITH A FLEXIBLE ROD MADE OF INSULATING FABRIC
US4214247A (en) * 1978-10-13 1980-07-22 Avnet, Incorporated Tunable fiberglass whip antenna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249945A (en) * 1962-07-05 1966-05-03 Prodelin Inc Tunable whip antenna with combined loading coil and shock spring
US4101898A (en) * 1976-07-26 1978-07-18 David Lee Ingram Base fed, top-loaded vertical whip antenna

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7316414U (en) * 1973-09-13 Bosch R Elektronik Gmbh Antenna for a radio device built into a vehicle
US2938210A (en) * 1957-09-30 1960-05-24 Edward F Harris Process of fabricating a whip antenna
US2966679A (en) * 1957-11-13 1960-12-27 Edward F Harris Unloaded helical antenna
DE1254203B (en) * 1961-06-09 1967-11-16 Sumitomo Electric Industries Helical antenna
US3383695A (en) * 1965-12-22 1968-05-14 Navy Usa Helical antenna with end distortion to improve polarization purity
DE2357542A1 (en) * 1973-11-17 1975-05-22 Bosch Elektronik Gmbh Antenna with flexible rod - comprising helical spring embedded in elastic layer
DE2727900A1 (en) * 1976-06-21 1977-12-29 Nat Res Dev RADIO AND BROADCAST ANTENNA
US4214247A (en) * 1978-10-13 1980-07-22 Avnet, Incorporated Tunable fiberglass whip antenna
DE7916011U1 (en) * 1979-06-02 1979-09-13 Robert Bosch Gmbh, 7000 Stuttgart ANTENNA WITH A FLEXIBLE ROD MADE OF INSULATING FABRIC

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374371A1 (en) * 1988-12-20 1990-06-27 Robert Bosch Gmbh Rod antenna for t.v. reception
FR2695257A1 (en) * 1992-12-17 1994-03-04 Pizon Ernest Radio aerial for car - has section connected to whip aerial contg. capacitor space with series self-inductance formed by windings on tube
WO1996036087A1 (en) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Process for producing a helical aerial and helical aerial
WO1996036089A1 (en) * 1995-05-09 1996-11-14 Robert Bosch Gmbh Process for producing a rod aerial
WO2009156001A1 (en) * 2008-06-26 2009-12-30 Robert Bosch Gmbh Bar antenna
CN108553045A (en) * 2018-03-30 2018-09-21 魏磊 A kind of automatic mop

Also Published As

Publication number Publication date
US4375642A (en) 1983-03-01
JPS5787205A (en) 1982-05-31
DE3036084A1 (en) 1982-04-29

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