EP0048788A1 - Stabantenne, insbesondere für UKW-Rundfunkempfang - Google Patents
Stabantenne, insbesondere für UKW-Rundfunkempfang 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- Withdrawn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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803036084 DE3036084A1 (de) | 1980-09-25 | 1980-09-25 | Stabantenne, insbesondere fuer ukw-rundfunkempfang |
DE3036084 | 1980-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0048788A1 true EP0048788A1 (de) | 1982-04-07 |
Family
ID=6112782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81102262A Withdrawn EP0048788A1 (de) | 1980-09-25 | 1981-03-26 | Stabantenne, insbesondere für UKW-Rundfunkempfang |
Country Status (4)
Country | Link |
---|---|
US (1) | US4375642A (ja) |
EP (1) | EP0048788A1 (ja) |
JP (1) | JPS5787205A (ja) |
DE (1) | DE3036084A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0374371A1 (de) * | 1988-12-20 | 1990-06-27 | Robert Bosch Gmbh | Stabantenne für den Fernsehempfang |
FR2695257A1 (fr) * | 1992-12-17 | 1994-03-04 | Pizon Ernest | Antenne. |
WO1996036087A1 (de) * | 1995-05-09 | 1996-11-14 | Robert Bosch Gmbh | Verfahren zum herstellen einer wendelantenne und wendelantenne |
WO1996036089A1 (de) * | 1995-05-09 | 1996-11-14 | Robert Bosch Gmbh | Verfahren zum herstellen einer stabantenne |
WO2009156001A1 (de) * | 2008-06-26 | 2009-12-30 | Robert Bosch Gmbh | Stabantenne |
CN108553045A (zh) * | 2018-03-30 | 2018-09-21 | 魏磊 | 一种自动拖把 |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60174308U (ja) * | 1984-04-25 | 1985-11-19 | 株式会社ヨコオ | フレキシブルアンテナのエレメント |
JPS60180112U (ja) * | 1984-05-08 | 1985-11-29 | 株式会社 バンダイ | アンテナ装置 |
JPS617108U (ja) * | 1984-06-19 | 1986-01-17 | 株式会社ケンウッド | フレキシブルアンテナ |
US4725395A (en) * | 1985-01-07 | 1988-02-16 | Motorola, Inc. | Antenna and method of manufacturing an antenna |
DE3919884C2 (de) * | 1989-06-19 | 1994-05-19 | Bosch Gmbh Robert | Stabförmige Funkantenne |
JP2559074B2 (ja) * | 1990-04-27 | 1996-11-27 | 株式会社クリエイティックジャパン | アンテナ素子 |
FR2694137B1 (fr) * | 1992-07-21 | 1994-11-25 | Ernest Pizon | Antenne. |
JP3089933B2 (ja) * | 1993-11-18 | 2000-09-18 | 三菱電機株式会社 | アンテナ装置 |
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 (fr) * | 1997-01-28 | 1998-07-30 | Yokowo Co., Ltd. | Antenne a installer sur un vehicule, element d'antenne, et procede de fabrication |
FR2764123B1 (fr) * | 1997-05-30 | 1999-07-30 | Tramec | Antenne rigide et procede de fabrication correspondant |
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 (de) * | 1999-08-31 | 2001-06-28 | Bosch Gmbh Robert | Biegsamer Antennenstrahler |
KR100350866B1 (ko) * | 2000-10-18 | 2002-09-05 | 삼성전자 주식회사 | 이동통신 단말기의 헬리컬 안테나 구조 |
EP1470613A4 (en) * | 2002-01-09 | 2005-10-05 | Meadwestvaco Corp | INTELLIGENT STATION WITH MULTIPLE RF ANTENNAS AND INVENTORY CONTROL SYSTEM AND METHOD THEREFORE |
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 |
US20060220874A1 (en) * | 2005-03-03 | 2006-10-05 | Campero Richard J | Apparatus for and method of using an intelligent network and RFID signal router |
EP1875550A1 (de) * | 2005-04-26 | 2008-01-09 | Hirschmann Car Communication GmbH | Antennenrute mit innenliegendem ummantelten stab mit einer wicklung und einem aussenmantel darüber |
DE102006006923A1 (de) * | 2005-10-18 | 2007-04-19 | Hirschmann Car Communication Gmbh | Antennenrute für eine Antenne mit Glasfaserstab, der eine Ausnehmung aufweist |
US8316156B2 (en) * | 2006-02-17 | 2012-11-20 | Intel-Ne, Inc. | Method and apparatus for interfacing device drivers to single multi-function adapter |
KR100821981B1 (ko) * | 2007-02-02 | 2008-04-15 | 이성철 | 무지향성 안테나 |
DE102007038074A1 (de) * | 2007-08-11 | 2009-02-12 | Hirschmann Car Communication Gmbh | Stabantenne mit Außenummantelungsbereichen aus unterschiedlichen Kunststoffen |
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 (de) * | 1961-06-09 | 1967-11-16 | Sumitomo Electric Industries | Wendelantenne |
US3383695A (en) * | 1965-12-22 | 1968-05-14 | Navy Usa | Helical antenna with end distortion to improve polarization purity |
DE7316414U (de) * | 1973-09-13 | Bosch R Elektronik Gmbh | Antenne fur ein in ein Fahrzeug ein gebautes Rundfunkgerat | |
DE2357542A1 (de) * | 1973-11-17 | 1975-05-22 | Bosch Elektronik Gmbh | Antenne mit einem biegsamen antennenstab aus einer selbsttragenden schraubenfeder und einer die schraubenfeder umgebenden elastischen schicht |
DE2727900A1 (de) * | 1976-06-21 | 1977-12-29 | Nat Res Dev | Funk- und rundfunk-antenne |
DE7916011U1 (de) * | 1979-06-02 | 1979-09-13 | Robert Bosch Gmbh, 7000 Stuttgart | Antenne mit einem biegsamen stab aus isolierstoff |
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/de not_active Withdrawn
-
1981
- 1981-03-26 EP EP81102262A patent/EP0048788A1/de 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/ja active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7316414U (de) * | 1973-09-13 | Bosch R Elektronik Gmbh | Antenne fur ein in ein Fahrzeug ein gebautes Rundfunkgerat | |
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 (de) * | 1961-06-09 | 1967-11-16 | Sumitomo Electric Industries | Wendelantenne |
US3383695A (en) * | 1965-12-22 | 1968-05-14 | Navy Usa | Helical antenna with end distortion to improve polarization purity |
DE2357542A1 (de) * | 1973-11-17 | 1975-05-22 | Bosch Elektronik Gmbh | Antenne mit einem biegsamen antennenstab aus einer selbsttragenden schraubenfeder und einer die schraubenfeder umgebenden elastischen schicht |
DE2727900A1 (de) * | 1976-06-21 | 1977-12-29 | Nat Res Dev | Funk- und rundfunk-antenne |
US4214247A (en) * | 1978-10-13 | 1980-07-22 | Avnet, Incorporated | Tunable fiberglass whip antenna |
DE7916011U1 (de) * | 1979-06-02 | 1979-09-13 | Robert Bosch Gmbh, 7000 Stuttgart | Antenne mit einem biegsamen stab aus isolierstoff |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0374371A1 (de) * | 1988-12-20 | 1990-06-27 | Robert Bosch Gmbh | Stabantenne für den Fernsehempfang |
FR2695257A1 (fr) * | 1992-12-17 | 1994-03-04 | Pizon Ernest | Antenne. |
WO1996036087A1 (de) * | 1995-05-09 | 1996-11-14 | Robert Bosch Gmbh | Verfahren zum herstellen einer wendelantenne und wendelantenne |
WO1996036089A1 (de) * | 1995-05-09 | 1996-11-14 | Robert Bosch Gmbh | Verfahren zum herstellen einer stabantenne |
WO2009156001A1 (de) * | 2008-06-26 | 2009-12-30 | Robert Bosch Gmbh | Stabantenne |
CN108553045A (zh) * | 2018-03-30 | 2018-09-21 | 魏磊 | 一种自动拖把 |
Also Published As
Publication number | Publication date |
---|---|
US4375642A (en) | 1983-03-01 |
JPS5787205A (en) | 1982-05-31 |
DE3036084A1 (de) | 1982-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
17P | Request for examination filed |
Effective date: 19820909 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19850404 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KLINKWITZ, KURT Inventor name: DOERRIE, HORST |