DE8901792U1 - Motor vehicle with an antenna arrangement for an FM antenna diversity car radio - Google Patents

Description

BLAUPUNKT-WERKE GMBH PLI-Hi Pieper/&Ogr;&aacgr;-9 - 1 - 9.2.1989

R.No. 2033

Motor vehicle with an antenna arrangement for a VHF antenna diversity car radio

The invention relates to a motor vehicle with bumpers made of plastic molded parts and with an antenna arrangement for an FM antenna diversity car radio.

Since the reception quality of an FM car radio often depends on the current location of the receiving antenna, car radios have recently been developed which require several spatially separated receiving antennas to improve reception. Depending on the type of car radio used, the receiver input is automatically switched to the antenna with the best possible reception position or the reception signals supplied by several antennas are added in a combination receiver in such a way that the antenna arrangement has a directional effect which improves the reception quality.

It is known to equip a motor vehicle with several conventional rod antennas. However, such antenna arrangements are very complex and are also particularly susceptible to deliberate damage ( <).

It is also known to equip a motor vehicle with so-called window antennas, in which the antenna conductors are arranged on or in a window enclosed by a metal frame. Due to their placement, such front window antennas are often exposed to increased interference from electrical on-board equipment. In addition, they restrict the field of vision. With heated rear windows, the required decoupling of several antennas arranged on or in a window is not easily achievable due to the heating conductors.

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BLAUPUNKT-WERKE GMBH PLI-Hi Pieper/Od-9 -2- 9.2.1989

R.No. 2033

The invention is based on the object of creating a motor vehicle with an antenna arrangement for an OKW antenna diversity car radio, in which the conductor structures of the individual antennas are mounted inconspicuously and protected on the vehicle while preserving the reception properties.

This object is achieved according to the invention in that at least one of the two bumpers made of plastic, which are attached to the front and rear of the motor vehicle, has two separate conductor structures adapted to the contours of the bumper and designed as VHF antennas, which are spaced a predetermined distance from one another and which each extend into and/or over the areas of the bumper assigned to the outer corners of the motor vehicle.

The advantages achieved with the invention are in particular that the antennas are largely protected against mechanical damage, have optimal directional effects for the antenna diversity car radios, do not impede visibility, are mounted outside the vehicle cell and thus outside the interference of the electrical on-board system, can be operated together with other antennas, are well decoupled with regard to high frequencies and are mounted on the vehicle so that they are practically visibly.

Advantageous embodiments are specified in the subclaims.

An embodiment of the invention is shown in principle in the drawing and is described in more detail below.

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BLAUPUNKT-WERKE GMBH PLI-Hi Pieper/Od-9 - 3 - 9.2,1989

R.No. 2033

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Figure 1 one side view,

Figure 2 shows the top view of a motor vehicle with bumpers made of plastic parts, each with two VHF antennas, and

Figure 3 is a schematic representation of a bumper section provided with a VHF antenna.

A passenger vehicle 1 shown in Figures 1 and 2 in a side view and in a top view is equipped in a manner known per se at the front and rear with a bumper 2, 3 made as a plastic molded part. Each of the bumpers 2, 3 is provided according to the invention with two conductor structures designed as VHF antennas 4, 5; 6, 7. The antennas 4, 5 and 6, 7 of a bumper 2 or 3 arranged to the right and left of the vehicle center have a predetermined distance A from each other to achieve decoupling. In addition, the conductor structures of the antennas A, 5; 6, 7 extend beyond the areas of the bumper ? ? _; 3? above the outer corners of the motor vehicle 1.

In an advantageous embodiment according to Figure 3, the VHF antenna 5 is designed as a monopole antenna. The conductor structure designed as antenna 5 consists of a conductor strip 9 glued to the outside of the front bumper 2, which extends from the vehicle

mittÄ M at a distance A, along the outer contour of the impact-2

fingers 2 extends into the end area of the outer bumper part 8 that runs around the corner of the vehicle, with the end piece 10 of the conductor strip 9 being angled downwards. The conductor strip is connected via a connector piece 11 to an antenna cable (not shown) of a receiver (also not shown).

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BLAUPUNKT-WERKE GMBH PLl-Hi Pieper/Od-9 - A - 9.2.1989

R.No. 2033

The design of the conductor structures for the VHF antennas is not limited to the example shown in Figure 3. The conductor structures can of course also be designed as dipole antennas. The conductor structures can also be attached to the inner walls of the bumpers 2, metal-deposited onto the bumpers or surrounded by plastic injection molded bumpers. If the bumpers are sewn with an elastic strip, the conductor structures can also be arranged between the elastic strip and the bumper. In addition, the conductor structures can also be designed as a decorative strip and attached to the outside of the bumpers. To optimize reception, it can be advantageous for some vehicle types if the conductor structures run on several levels.

Claims (12)

i : 4ft *· BLAUPUNKT-WERKE GMBH PLI-Hl Pieper/Od-9 - 1 - 9.2.1989 R.Mr. 2033 Claims 1. Motor vehicle with bumpers made of plastic moldings and with an antenna arrangement for a VHF antenna diversity car radio, characterized in that at least one of the two bumpers (2, 3) attached to the front and rear of the motor vehicle (1) has two separate, adapted to the contours of the bumper, designed as VHF antennas (4, 5; 6, 7). ( has conductor structures which are spaced apart (A) and which each extend into and/or above the areas of the bumper (2, 3) associated with the outer corners of the motor vehicle (1). 2. Motor vehicle according to claim 1, characterized in that the conductor structures are designed as dipole antennas. 3. Motor vehicle according to claim 1, characterized in that the conductor structures are designed as monopole antennas. 4. Motor vehicle according to claim 2, characterized in that the conductor structures are designed as folded dipole antennas. 5. Motor vehicle according to one of claims 1 to 3, characterized in that the ladder structures are designed as decorative strips and are attached to the outside of the bumpers. 6. Motor vehicle according to one of claims 1 to 3, characterized in that the ladder structures are attached to the inner walls of the bumpers (2, 3). I Ib'..::1&Oacgr;':: ^! 1 BLAUPUNKT-WERKE GMBH PLI-Hi Pieper/Od-9 -2- 9.2.1969 R.No. 2033 '' 7. Motor vehicle according to one of claims 1 to 3, characterized, that the conductor structures consist of conductor tape (9) glued to the outside of the bumpers (2, 3). 5 8. Motor vehicle according to one of claims 1 to 3, characterized in that that the conductor structures consist of conductor tape, which is between ■ ) the bumper (2, 3) and an elastic bar is inserted. 10 9. Motor vehicle according to one of claims 1 to 3 _y ' characterized in that the conductor structures are metallically vapor-deposited onto the bumpers (2, 3). 10. Motor vehicle according to one of claims 1 to 3, ■> 15 characterized in that ·'■' that the conductor structures are made of plastic that is produced by injection molding _ provided bumpers (2, 3). 11. Motor vehicle according to one of claims 1 to 10, characterized in that ■ 20 that the ladder structures are bent several times and around the angled End regions (8) of the bumpers (2, 3) are guided around. tt 12. Motor vehicle according to one of claims 1 to 12, % characterized, % that the conductor structures run on several levels.