Classifications

• • 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
  • H01Q1/3266—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle using the mirror of the vehicle
• • 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
• • 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
  • H01Q1/3283—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle side-mounted antennas, e.g. bumper-mounted, door-mounted

Definitions

• the invention is based on an antenna arrangement for a motor vehicle or a method for implementing such an antenna arrangement.
• EP 383 017 A2 shows bumpers for a motor vehicle made of plastic moldings which carry antenna elements adapted to the bumper contours. Through the interconnection of such antenna elements, a diversity reception is possible there.
• the antenna elements are designed as glued ladder bands or trim strips.
• WO 02/23668 A1 also shows a bumper antenna arrangement with a conductive surface in the bumper. This surface forms with respect to the motor vehicle chassis (body panel) a slot that affects the Antennenstrahldia- program. Antenna connections at several points on the conductive surface can be used to gain signals for diversity operation.
• WO01 / 59878 Al a arranged in the vehicle outside mirror antenna is known.
• the mirror glass is there divided into segments isolated from each other and thus permeable to high-frequency signals, so that high-frequency signals to
• Antenna can get in the space between a metallic support and the plastic housing of the vehicle outside mirror.
• the actual attachment such as bumpers or mirrors must not be reconstructed consuming when it is to receive an antenna.
• the fixture for the component is to be insulated from the chassis in order to be used as an antenna, e.g. B. holding device as a dipole or as a loop antenna or, if such isolation is not desirable, it is sufficient to take an insulated antenna conductor by the holding device or pass in tube-like design of the holding device.
• the antenna arrangement according to the invention is suitable for additional services such as car-to-car communication or the communication of vehicles to signal systems for the already existing antennas are not designed or for motor vehicles, in which conventional antennas are not positionable, for example
• Rear window antennas for trucks Since trucks are usually equipped with temple and tube-like holding devices for rearview mirror, they can be easily used for an antenna arrangement according to the invention.
• an insulated antenna conductor can be easily passed through the tube.
• the tube itself acts as a shielding for electromagnetic waves, but as in a conventional loop antenna at least the magnetic field component can be received with a pronounced directivity in the direction of the road, especially in truck mirror mounts, which is particularly advantageous for communication with lane-side signal systems or toll systems power.
• these can advantageously be connected together to form an antenna system and enable a diversity operation by means of a switching device.
• Metallic retainers may also preferably be split in the middle to receive insulation.
• the individual parts can be set up as individual parts of a dipole or as individual receiving elements of a diversity receiving device.
• a retainer according to the invention may form an antenna counterweight to the chassis to operate like a dipole emitter.
• FIG. 1 holding devices for rearview mirror of a truck
• FIG. 2 shows a holding device with intermediate insulation
• FIG. 3 shows a holding device with an antenna conductor
• 4 shows a holding device with a split inside antenna conductor
• FIG. 6 shows a holding device for a bumper
• FIG. 7 shows the use of holding devices for a bumper isolated from the chassis
• FIG. 8 shows antenna conductors which are guided through a bumper retaining device
• Figure 1 shows a bow-like holding device 1 for a rearview mirror 2 of a truck 3. It usually consists of a bow-shaped metallic tube whose two ends are fixed to the metallic outer wall 4 of the truck cab and thus on the chassis. If the tube ends of the holding device 1 are electrically separated from the chassis via insulation 5, the holding device itself can be used as an antenna. It merely has to be connected to an antenna feed line 6 and optionally via an adapter 7 to a motor vehicle receiving and / or transmitting device 8.
• the holding device 11 for the rearview mirror 22 on the opposite side together with the holding device 1 may form individual elements of a dipole or individual elements for a diversity device 9, depending on the measured field strength of the antenna signals of the individual elements 1 and 11 via a switching device 10 that individual element to the receiving device 8 through which delivers the highest reception field strength.
• FIG. 2 shows the same arrangement as FIG. 1 with the difference that the holding device 1 has an insulating point 13 approximately in its center, in particular on the spine comb remote from the motor vehicle 3.
• the holding device 1 or 11 forms two mutually electrically isolated parts 101 and 102 which are interconnected as antenna conductor to a multi-antenna system or to a dipole antenna.
• the antenna feed line 6 is not performed as in the figures 1 and 2 via a separate wall duct 62 in the vehicle interior, but continued as an insulated antenna conductor 63 through the inner tube 12 of the holding device 1 therethrough. If, as Figure 3 shows, the antenna conductor 63 is guided through the entire inner tube of the holding device 1 or 11 until the transition to the antenna feed line 6 at the re-exit at the other end of the tube, an antenna conductor loop forms, even in the absence of insulation of the holding device. 1 and 11, respectively, with respect to the chassis is adapted to receive the magnetic field component of a radio frequency signal.
• the tube pieces 121 to the mirror 2 can also receive antenna conductors, so that F-shaped antenna elements are formed, which can serve as antenna elements for different frequency ranges, in particular given different lengths of the free ends.
• the insulating point 13 on the spine of the holding device can also be extended so that the free ends of the antenna conductors 632 and 633 protrude into the insulation (FIG. 5) - this lengthens the antenna length for the electric field component with the possibility of targeted adjustment of the directivity.
• the holding device 1, 11 caused by an extension of the isolation 13 by means of a suitable plastic less scratch marks especially when maneuvering the truck in the vicinity of buildings or other motor vehicles.
• FIG. 6 shows a metallic holding device 1 for the front bumper 15 of a motor vehicle 3. If this holding device 1 is electrically separated from the chassis of the motor vehicle 3 according to FIG. 6 by an insulation 16, the holding device 1 or a further metallic holding device 11 for the bumper can be used 15 are used as an antenna and connected to antenna feed line 6 and 61, respectively. Since the bumper 15 is usually made of plastic, the two holding devices are not electrically connected to each other. If the insulation 16 is missing and the metallic holding devices 1 to 11 consist of metallic pipe sections, an insulated antenna conductor 64 or 65 can be guided through the pipe sections of the holding devices 1 and 11, respectively, according to FIG. The free ends of the antenna conductors 64, 65 find their continuation in the bumper 15 and are merely fixed there.
• Figure 8 shows a variant in which the free ends of the antenna conductors 64, 65 are interconnected and form a loop.
• a loop antenna for example loop dipole or loop antenna, similar to the previously discussed variants in connection with rearview mirror holders.
• the exterior mirror retainers and the bumper retainers may be combined into a multi-antenna diversity system.
• the combination with existing conventional glass antennas and rod antennas is possible to receive targeted directivity or antenna signals of different frequency ranges, such as U KW, LMK, TV, signals, car-to-X signals or GSM, or UMTS signals.

Landscapes

• Engineering & Computer Science (AREA)
• Remote Sensing (AREA)
• Support Of Aerials (AREA)
• Details Of Aerials (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40010786

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Family Cites Families (13)

• 2007
  • 2007-12-04 DE DE102007058247A patent/DE102007058247A1/de not_active Withdrawn
• 2008
  • 2008-10-13 WO PCT/EP2008/063719 patent/WO2009071361A1/de active Application Filing
  • 2008-10-13 EP EP08805252A patent/EP2223382A1/de not_active Withdrawn
  • 2008-10-13 US US12/746,163 patent/US20100309066A1/en not_active Abandoned
  • 2008-10-13 CN CN2008801193606A patent/CN101933194A/zh active Pending
  • 2008-12-02 TW TW097146698A patent/TW200926509A/zh unknown

Non-Patent Citations (1)

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