SE518868C2 - Antenna device with magnetic attachment device and earth connection means for operation at multiple frequencies - Google Patents
Antenna device with magnetic attachment device and earth connection means for operation at multiple frequenciesInfo
- Publication number
- SE518868C2 SE518868C2 SE9800929A SE9800929A SE518868C2 SE 518868 C2 SE518868 C2 SE 518868C2 SE 9800929 A SE9800929 A SE 9800929A SE 9800929 A SE9800929 A SE 9800929A SE 518868 C2 SE518868 C2 SE 518868C2
- Authority
- SE
- Sweden
- Prior art keywords
- conductor
- magnetic
- metal
- ground
- fastening means
- Prior art date
Links
Classifications
-
- 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
- H01Q9/32—Vertical arrangement of element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/14—Supports; Mounting means for wire or other non-rigid radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
Description
25 30 s1a sea ningen, såsom kommer att framgå från nedanstående detaljerade beskrivning. 30 as a result, as will be apparent from the following detailed description.
KORTFATTAD BESKRIVNING AV RITNINGARNA Det ska noteras att ritningarna inte nödvändigtvis är utförda i enlighet med exakt form, skala och proportioner, utan är avsedda att ge och underlätta förstående för uppfinningen i ändamål att en fackman ska kunna tillämpa uppfinningen.BRIEF DESCRIPTION OF THE DRAWINGS It should be noted that the drawings are not necessarily designed in accordance with the exact form, scale and proportions, but are intended to provide and facilitate understanding of the invention for the purpose of one skilled in the art to practice the invention.
Den enda figuren på ritningen visar i en partiell sektionsvy en föredragen utföringsform av en antennanordning i enlighet med uppfinningen och ett jordplan, till vilket den ska fast- sättas. Antennanordningen är vanligen rotationssymmetrisk i förhållande till en längsgående axel, utom i ett arrangemang för införandet av en kabel in i anordningen.The single figure in the drawing shows in a partial sectional view a preferred embodiment of an antenna device in accordance with the invention and a ground plane to which it is to be attached. The antenna device is usually rotationally symmetrical with respect to a longitudinal axis, except in an arrangement for inserting a cable into the device.
BESKRIVNING AV FÖREDRAGNA UTFÖRINGSFORMER Med hänvisning till figuren har den visade antennanordningen en basdel 1 och en radiatordel 2. Antennanordningen i den beskrivna utföringsformen är avsedd att tjäna som en hjälp- antenn för en handportabel mobil telefon (ej visad) vid färd i en bil, som har en stomme inkluderande en stålpanel 3, som verkar som ett jordplan. Stålpanelen inkluderar vanligen ett yttre skyddande skikt 4, såsom en lack. Vid sådan användning är mobiltelefonen förbunden via en koaxialkabel 5, partiellt visad, vid antennanordningen enligt uppfinningen.DESCRIPTION OF PREFERRED EMBODIMENTS Referring to the figure, the antenna device shown has a base part 1 and a radiator part 2. The antenna device in the described embodiment is intended to serve as an auxiliary antenna for a hand-portable mobile telephone (not shown) when driving a car, which has a frame including a steel panel 3, which acts as a ground plane. The steel panel usually includes an outer protective layer 4, such as a varnish. In such use, the mobile telephone is connected via a coaxial cable 5, partially shown, to the antenna device according to the invention.
Basdelen 1 och radiatordelen 2 är avsedda att sammanbindas genom gängade organ 6 och 7 hos de respektive delarna 1 och 2 så att ytorna 8 och 9 kommer till anliggning mot varandra.The base part 1 and the radiator part 2 are intended to be connected together by threaded means 6 and 7 of the respective parts 1 and 2 so that the surfaces 8 and 9 come into abutment against each other.
Vidare kommer ytan 10 hos basdelen 1 till anliggning mot stål- panelen 3. I drift reser sålunda basdelen 1, radiatordelen 2 i huvudsak vinkelrätt mot stålpanelen 3 på utsidan av bilkaros- 23255; 99-06-18 10 15 20 25 30 s1s ass sen. Ett biltak föredras som jordplanet men olika andra jord- planorgan är möjliga att använda.Furthermore, the surface 10 of the base part 1 comes into abutment against the steel panel 3. In operation, the base part 1, the radiator part 2 thus travels substantially perpendicular to the steel panel 3 on the outside of the car body; 99-06-18 10 15 20 25 30 s1s ass sen. A car roof is preferred as the ground plane, but various other ground plane bodies are possible to use.
Basdelen l inkluderar ett första icke ledande hus 11, som her- metiskt tätar en inre kavitet 12 bildad däri. I synnerhet föredras av hållbarhetsskäl att huset ll integrerat bildar ytan 10 som fysiskt ska komma i kontakt med stålpanelen 3.The base part 1 includes a first non-conductive housing 11, which hermetically seals an inner cavity 12 formed therein. In particular, for reasons of durability, it is preferred that the housing 11 integrally forms the surface 10 which is to physically come into contact with the steel panel 3.
Basdelen 1 inkluderar vidare ett kabelhâl 13 och ett radiator- hål 14. Kabeln 5 är äntrad fixerande genom kabelhàlet och en central ledare 15 hos kabeln 5 är förbunden med en första undre sprötradiatordel 16.The base part 1 further includes a cable hole 13 and a radiator hole 14. The cable 5 is entered fixing through the cable hole and a central conductor 15 of the cable 5 is connected to a first lower rod radiator part 16.
Delen 16 är vidare förbunden med en andra undre sprötradiator- del 17. Delen 17 är vidare förbunden med en tredje undre sprötradiatordel 18. Delen 18 är vidare förbunden med en helixradiatordel 19. Delen 19 är vidare förbunden med en övre sprötradiatordel 20. Delarna 17 - 20 är inneslutna i ett andra icke ledande hus 21.The part 16 is further connected to a second lower rod radiator part 17. The part 17 is further connected to a third lower rod radiator part 18. The part 18 is further connected to a helical radiator part 19. The part 19 is further connected to an upper rod radiator part 20. The parts 17 - 20 are enclosed in a second non-conductive housing 21.
En yttre ledare 22 hos kabeln 5 är kontaktad och fasthållen av en i huvudsak cirkulär fastsättningsplåt av stål 23 genom fästvårtorgan 24, formade integrerat i plattan 3. Vårtorganen 24 håller och kontaktar den yttre ledaren 22 genom tryck erhàllen genom deformation eller, möjligtvis, används lödning.An outer conductor 22 of the cable 5 is contacted and held by a substantially circular steel mounting plate 23 through fastening means 24, formed integrally in the plate 3. The wart means 24 hold and contact the outer conductor 22 by pressure obtained by deformation or, possibly, soldering is used. .
Plattan 23 är arrangerad parallellt med ytan 10. Mellan plat- tan 23 och ytan 10 förefinnes en skivformig magnet 25, som är inrättad att hålla fast antennorganet vid stålpanelen 3 genom magnetisk attraktion. Vidare är plattan 23 hàllen tätt till magnetskivan 25 genom magnetisk attraktion. Sålunda är den yttre ledaren 22 kopplad konduktivt och kapacitivt till stål- panelen 3. Den föredragna antennanordningen fungerar vid frekvenser i storleksordningen 1 MHz. Sålunda kan en tillräck- 23255; 99-06-18 10 15 20 25 30 5182868 lig koppling mellan den yttre ledaren 22 och stålpanelen 3 nås genom en kondensatoryta av endast ett fåtal kvadratcentimetrar hos plattan 23 och magneten 25.The plate 23 is arranged parallel to the surface 10. Between the plate 23 and the surface 10 there is a disc-shaped magnet 25, which is arranged to hold the antenna member to the steel panel 3 by magnetic attraction. Furthermore, the plate 23 is held tightly to the magnetic disk 25 by magnetic attraction. Thus, the outer conductor 22 is connected conductively and capacitively to the steel panel 3. The preferred antenna device operates at frequencies of the order of 1 MHz. Thus, a sufficient 23255; The connection between the outer conductor 22 and the steel panel 3 is reached through a capacitor surface of only a few square centimeters of the plate 23 and the magnet 25.
Antennanordningen är avsedd för drift i ett lägre och ett övre, eller flera, relativt vitt separerade frekvensband, t ex frekvensband omkring 900 resp 1800 MHz. Sådan dubbellbanddrift erhålls genom uppfinningen medelst en fördelad parallellreso- nanskrets bildad av helixradiatordelen 19. Delen 19 förmedlar väsentligen signaler i det undre frekvensbandet och blockerar de i det övre frekvensbandet. Funktionen av delen 19 erhålls genom val av avpassad axiell längd, lindningsdiameter, tråd- tjocklek och stigning därav, så att kapacitanser mellan helix- varven ger avskärning vid det övre bandet. Det är nödvändigt för dubbelbanddriften av antennen att välja helixstigningen och tråddiametern så att stigningen är väsentligen lika med eller större än tråddiametern för att hantera variationer vid tillverkning och eventuell deformation av delen 19 på grund av fysisk påverkan.The antenna device is intended for operation in a lower and an upper, or several, relatively widely separated frequency bands, for example frequency bands around 900 and 1800 MHz, respectively. Such double band operation is obtained by the invention by means of a distributed parallel resonant circuit formed by the helical radiator part 19. The part 19 essentially transmits signals in the lower frequency band and blocks them in the upper frequency band. The function of the part 19 is obtained by selecting the adapted axial length, winding diameter, wire thickness and pitch thereof, so that capacitances between the helical turns provide a cut-off at the upper band. It is necessary for the dual band operation of the antenna to select the helical pitch and wire diameter so that the pitch is substantially equal to or greater than the wire diameter to handle variations in fabrication and possible deformation of the portion 19 due to physical impact.
Vid det undre bandet utgör delarna 16 - 20 den kombinerade radiatorn, under det att vid det övre bandet, delarna 16 ~ 18 och endast en del av delen 19 tillhandahåller den kombinerade antennfunktionen. Sålunda erhålls en blockerande filterfunk- tion för det övre bandet medelst helixen.At the lower band, the parts 16 - 20 constitute the combined radiator, while at the upper band, the parts 16 ~ 18 and only a part of the part 19 provide the combined antenna function. Thus, a blocking filter function for the upper band is obtained by means of the helix.
Tester och simuleringar har visar att en antenn konstruerad i enlighet med den som visas på ritningarna fungerar väl i dub- belbanddrift, i GSM900 MHz och DCS1800 MHz system då den har följande dimensioner: 0,5 mm diameter för tråden i delarna 18, 19, 20; 39,5 mm total längd för delarna 16, 17, 18; 3 mm ytterdiameter, 1 mm stigning och 13,5 varv hos helixdelen 19.Tests and simulations have shown that an antenna constructed in accordance with the one shown in the drawings works well in dual band operation, in GSM900 MHz and DCS1800 MHz systems as it has the following dimensions: 0.5 mm diameter for the wire in parts 18, 19, 20; 39.5 mm total length for parts 16, 17, 18; 3 mm outer diameter, 1 mm pitch and 13.5 turns of the helix part 19.
Magnetskivan 25, plattan 23 och ytan 10 är utformade för att 23255; 99-06-18 518 ass tillhandahålla en tillräcklig attraktions- och friktionskraft när antennanordningen är monterad på ett biltak.The magnetic disk 25, the plate 23 and the surface 10 are designed to 23255; 99-06-18 518 ass provide a sufficient attraction and frictional force when the antenna device is mounted on a car roof.
Det ska inses att det uppfinningsenliga konceptet och omfånget för uppfinningen definieras endast av de bifogade kraven. 23255; 99-06-18It is to be understood that the concept according to the invention and the scope of the invention are defined only by the appended claims. 23255; 99-06-18
Claims (10)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9800929A SE518868C2 (en) | 1998-03-19 | 1998-03-19 | Antenna device with magnetic attachment device and earth connection means for operation at multiple frequencies |
PCT/SE1999/000430 WO1999048167A1 (en) | 1998-03-19 | 1999-03-18 | Antenna device having magnetic fastening means and ground coupling means capable of operating at multiple frequencies |
EP99914841A EP1064692A1 (en) | 1998-03-19 | 1999-03-18 | Antenna device having magnetic fastening means and ground coupling means capable of operating at multiple frequencies |
AU33495/99A AU3349599A (en) | 1998-03-19 | 1999-03-18 | Antenna device having magnetic fastening means and ground coupling means capable of operating at multiple frequencies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9800929A SE518868C2 (en) | 1998-03-19 | 1998-03-19 | Antenna device with magnetic attachment device and earth connection means for operation at multiple frequencies |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9800929D0 SE9800929D0 (en) | 1998-03-19 |
SE9800929L SE9800929L (en) | 1999-09-20 |
SE518868C2 true SE518868C2 (en) | 2002-12-03 |
Family
ID=20410622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9800929A SE518868C2 (en) | 1998-03-19 | 1998-03-19 | Antenna device with magnetic attachment device and earth connection means for operation at multiple frequencies |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1064692A1 (en) |
AU (1) | AU3349599A (en) |
SE (1) | SE518868C2 (en) |
WO (1) | WO1999048167A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001080367A1 (en) * | 2000-04-13 | 2001-10-25 | Mitsubishi Denki Kabushiki Kaisha | Antenna element and portable communication terminal |
JP3996331B2 (en) | 2000-08-21 | 2007-10-24 | 原田工業株式会社 | Automotive rod antenna device |
DE202006020780U1 (en) * | 2006-03-16 | 2010-02-18 | Kathrein-Werke Kg | Rod antenna, in particular for motor vehicles |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE501841C2 (en) * | 1994-06-29 | 1995-06-06 | Carant Antenn Ab | Magnetic foot for antenna suitable for motor vehicle - contains plate magnet magnetised so that at least two North and South poles are located on each upper and lower side |
-
1998
- 1998-03-19 SE SE9800929A patent/SE518868C2/en not_active IP Right Cessation
-
1999
- 1999-03-18 EP EP99914841A patent/EP1064692A1/en not_active Ceased
- 1999-03-18 WO PCT/SE1999/000430 patent/WO1999048167A1/en not_active Application Discontinuation
- 1999-03-18 AU AU33495/99A patent/AU3349599A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU3349599A (en) | 1999-10-11 |
SE9800929L (en) | 1999-09-20 |
WO1999048167A1 (en) | 1999-09-23 |
EP1064692A1 (en) | 2001-01-03 |
SE9800929D0 (en) | 1998-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |