EP0048788A1 - Rod antenna, in particular for VHF broadcast reception - Google Patents
Rod antenna, in particular for VHF broadcast reception Download PDFInfo
- 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
- Authority
- 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- Withdrawn
Links
Images
Classifications
-
- 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.
Landscapes
- 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
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.
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.
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.
- 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.
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
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
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
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
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
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
Auf dem oberen Ende der Stabantenne befindet sich eine Schutzkappe 27.A
Claims (12)
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 |
Family
ID=6112782
Family Applications (1)
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)
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 |
Families Citing this family (28)
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 |
DE19941501C1 (en) * | 1999-08-31 | 2001-06-28 | Bosch Gmbh Robert | Flexible antenna radiator |
KR100350866B1 (en) * | 2000-10-18 | 2002-09-05 | 삼성전자 주식회사 | Helical antenna structure of portable communication terminal |
WO2003061060A2 (en) * | 2002-01-09 | 2003-07-24 | Meadwestvaco Corporation | Intelligent station using multiple rf antennae and inventory control system and method incorporating same |
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 |
AU2006218441B2 (en) * | 2005-03-03 | 2010-09-30 | Sensormatic Electronics, LLC | Apparatus for and method of using an intelligent network and RFID signal router |
WO2006114270A1 (en) * | 2005-04-26 | 2006-11-02 | Hirschmann Car Communication Gmbh | Antenna rod having an interior sheathed rod with a winding and an outer shell on top |
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)
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)
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 |
-
1980
- 1980-09-25 DE DE19803036084 patent/DE3036084A1/en not_active Withdrawn
-
1981
- 1981-03-26 EP EP81102262A patent/EP0048788A1/en not_active Withdrawn
- 1981-07-20 US US06/284,696 patent/US4375642A/en not_active Expired - Fee Related
- 1981-09-25 JP JP56150815A patent/JPS5787205A/en active Pending
Patent Citations (9)
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)
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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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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Effective date: 19820909 |
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Inventor name: KLINKWITZ, KURT Inventor name: DOERRIE, HORST |