EP0443088A2 - Antenne fouet pour au moins deux gammes de fréquences - Google Patents
Antenne fouet pour au moins deux gammes de fréquences Download PDFInfo
- Publication number
- EP0443088A2 EP0443088A2 EP19900117741 EP90117741A EP0443088A2 EP 0443088 A2 EP0443088 A2 EP 0443088A2 EP 19900117741 EP19900117741 EP 19900117741 EP 90117741 A EP90117741 A EP 90117741A EP 0443088 A2 EP0443088 A2 EP 0443088A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- conductive
- conductive coating
- shaped radiator
- radiator according
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
Definitions
- the invention is based on a rod-shaped radiator according to the preamble of claim 1.
- Such a radiator is known (DE 89 O8 175 U1), which is suitable for radio traffic and for radio reception (VHF, K, M, L), particularly in vehicles.
- the known radiator has the disadvantage that its bandwidth is too small for certain applications of the radiator.
- the invention has for its object to develop the rod-shaped radiator according to the preamble of claim 1 such that the bandwidth of the radiator increases both in the direction of higher and lower frequencies with little technical effort.
- a preferred area of application for the rod-shaped radiator is a vehicle radio antenna, which is preferably also suitable for radio reception with a car radio.
- Fig. 1 10 denotes a rod-shaped radiator for different frequency ranges, for example the radio range and the long, medium, short and ultra-short wave broadcasting range.
- the radiator comprises a cylindrical rod 11 made of a dielectric material, preferably of glass fiber, which contains a coaxial inner conductor 12 which extends over the entire length of the radiator.
- the rod 11 has a length of about 3/2 ⁇ , where ⁇ is the average operating wavelength of the radio range in question.
- a lower length range of the rod 11 has a length L1 of approximately ⁇ / 2 and carries a first thin, conductive coating 13.
- a medium length range of the rod which also has a length L2 of approximately ⁇ / 2, carries a second thin, conductive coating 14. There is a distance a between the two conductive coverings 13 and 14, so that the coverings are insulated from one another.
- an inner conductor end 23 of the inner conductor 12 emerges from the latter. It is bent around the end of the rod and connected to the first conductive coating 13 in a conductive manner, for example by soldering.
- the conductive covering 13 can be guided around the lower end face of the rod 11 and the inner conductor end 23, which is shorter in this case, can reach through the end covering, be bent radially and be conductively connected to the end covering.
- the lower end of the rod is in a recess 15 of a threaded bolt 16, which is used to fasten the radiator to a foot piece connected to a wall, for example a vehicle body.
- the entire length L of the radiator 10 comes into effect during radio reception.
- radio traffic that takes place in a comparatively high frequency range for example between 450 ... 470 MHz, only the lower and upper part comes into effect.
- rod 17 which tapers conically from the base of the radiator and which, as in the exemplary embodiment according to FIG. 1, likewise carries two conductive coverings 18 and 19.
- a cylindrical rod 20 is shown, which is provided in place of the pads 13, 14 of FIG. 1 with two conductive braids 21 and 22.
- the conductive braids are pushed onto the rod 20, for example.
- the foils and the tube parts are preferably made of copper and can be injected into the rod 27 during the manufacture of the radiator, so that the foils or tube parts do not protrude beyond the outer surface of the rod 27.
- radiators shown in FIGS. 1 to 4 are covered, for example, with an insulating tube, which is preferably a shrink tube; see. the hose 28 shown shortened in FIG. 4.
- an insulating tube which is preferably a shrink tube; see. the hose 28 shown shortened in FIG. 4.
Landscapes
- Details Of Aerials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9002022U DE9002022U1 (fr) | 1990-02-21 | 1990-02-21 | |
DE9002022U | 1990-02-21 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0443088A2 true EP0443088A2 (fr) | 1991-08-28 |
EP0443088A3 EP0443088A3 (en) | 1991-09-11 |
EP0443088B1 EP0443088B1 (fr) | 1994-12-07 |
Family
ID=6851223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90117741A Expired - Lifetime EP0443088B1 (fr) | 1990-02-21 | 1990-09-14 | Antenne fouet pour au moins deux gammes de fréquences |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0443088B1 (fr) |
DE (2) | DE9002022U1 (fr) |
DK (1) | DK0443088T3 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021003A1 (fr) * | 1993-03-12 | 1994-09-15 | Rayan | Antenne a bas profil pour equipement radio embarque a frequences multiples |
WO1999066590A1 (fr) * | 1998-06-17 | 1999-12-23 | Young Joon Kim | Antenne pour systemes de communication mobile |
US6518925B1 (en) | 1999-07-08 | 2003-02-11 | Filtronic Lk Oy | Multifrequency antenna |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493514A (en) * | 1945-12-22 | 1950-01-03 | Rca Corp | Multiply-resonant stub antenna |
US4725846A (en) * | 1986-12-12 | 1988-02-16 | Western Mobile Communications, Inc. | Disguise antenna operating in the cellular band |
US4748450A (en) * | 1986-07-03 | 1988-05-31 | American Telephone And Telegraph Company, At&T Bell Laboratories | Vehicular multiband antenna feedline coupling device |
DE8908175U1 (fr) * | 1989-06-19 | 1989-08-31 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4509056A (en) * | 1982-11-24 | 1985-04-02 | George Ploussios | Multi-frequency antenna employing tuned sleeve chokes |
DE8909175U1 (fr) * | 1989-07-28 | 1989-09-14 | Klever, Hans, 5207 Ruppichteroth, De |
-
1990
- 1990-02-21 DE DE9002022U patent/DE9002022U1/de not_active Expired - Lifetime
- 1990-09-14 DE DE59007938T patent/DE59007938D1/de not_active Expired - Lifetime
- 1990-09-14 EP EP90117741A patent/EP0443088B1/fr not_active Expired - Lifetime
- 1990-09-14 DK DK90117741.0T patent/DK0443088T3/da active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493514A (en) * | 1945-12-22 | 1950-01-03 | Rca Corp | Multiply-resonant stub antenna |
US4748450A (en) * | 1986-07-03 | 1988-05-31 | American Telephone And Telegraph Company, At&T Bell Laboratories | Vehicular multiband antenna feedline coupling device |
US4725846A (en) * | 1986-12-12 | 1988-02-16 | Western Mobile Communications, Inc. | Disguise antenna operating in the cellular band |
DE8908175U1 (fr) * | 1989-06-19 | 1989-08-31 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994021003A1 (fr) * | 1993-03-12 | 1994-09-15 | Rayan | Antenne a bas profil pour equipement radio embarque a frequences multiples |
FR2702598A1 (fr) * | 1993-03-12 | 1994-09-16 | Rayan | Antenne à bas profil pour équipement radio embarqué à fréquences multiples. |
WO1999066590A1 (fr) * | 1998-06-17 | 1999-12-23 | Young Joon Kim | Antenne pour systemes de communication mobile |
US6518925B1 (en) | 1999-07-08 | 2003-02-11 | Filtronic Lk Oy | Multifrequency antenna |
Also Published As
Publication number | Publication date |
---|---|
DK0443088T3 (da) | 1995-05-01 |
DE9002022U1 (fr) | 1990-04-26 |
EP0443088A3 (en) | 1991-09-11 |
DE59007938D1 (de) | 1995-01-19 |
EP0443088B1 (fr) | 1994-12-07 |
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