Motor and/or transmitting device

• US 6,933,899 B2
• Filed: 02/20/2003
• Issued: 08/23/2005
• Est. Priority Date: 02/22/2002
• Status: Expired due to Term

• Current Assignee: Kathrein Automotive GmbH (Continental AG)
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Magg, Christian, Prassmayer, Peter Karl
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US10/470,165
• Publication Number:
  US 20040056809A1
• Time in Patent Office: 915 Days
• Field of Search: 343/704, 343/702, 343/711, 343/712, 343/713, 343/715, 343/745, 343/749
• US Class Current: 343/713
• CPC Class Codes: H01Q 1/125 Means for positioning
• CPC Class Codes: H01Q 1/3275 mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/321 within a radiating element or between connected radiating elements
• CPC Class Codes: H01Q 5/371 Branching current paths

Abstract

A receiving and/or transmitting device for motor vehicles has an antenna foot, with a housing. An electrical connection for an antenna element, which is preferably in turn electrically connected to a further antenna element via a lock-out coil, is made via an internal connecting line. The connecting line is preferably in the form of a bracket, and/or the first antenna is provided with an electrically conductive extension.

Claims

1. An antenna for a mobile receiving and/or transmitting device comprising:

an antenna foot,

a connecting line which is provided in the antenna foot for electrical connection of a first antenna element arrangement,

the first antenna element arrangement comprising;

at least one first antenna element,

a further antenna element arrangement, and

a lock-out coil that connects the further antenna element arrangement to the first antenna element arrangement, the lock-out coil and the first and second antenna element arrangements acting as a common antenna element arrangement at low frequencies, the lock-out coil substantially not passing higher frequencies,

the connecting line including an electrically conductive extension, provided in the region of the antenna foot,

the extension comprising a branch of an electrical connection formed by the connecting line and the first antenna element arrangement.

2. The antenna as claimed in claim 1, further including an antenna foot housing that accommodates the extension.

3. The antenna as claimed in claim 1, wherein the extension is in the form of a direct branching extension of the connecting line, with the connecting line being lengthened beyond a connecting attachment, and the connecting attachment representing an electrical connection for the first antenna element arrangement.

4. The antenna as claimed in claim 1, wherein the extension is in the form of a separate component.

5. The antenna as claimed in claim 4, wherein the extensions is in the form of an arc, and comprises free ends increasingly laterally offset approximately parallel to the axial longitudinal extent of the first antenna element arrangement.

6. The antenna as claimed in claim 4, wherein the extension is in the form of an extension to the connecting line, in the form of a bracket, forming a kink point.

7. The antenna as claimed in claim 1, wherein the extension is located on the same side with respect to the first antenna element arrangement as the connecting line.

8. The antenna as claimed in claim 1, wherein the extension and the connecting line are arranged opposite the first antenna element arrangement.

9. The antenna as claimed in claim 1, wherein the extension comprises a flat element, in the form of a disk or plate.

10. The antenna as claimed in claim 1, wherein the extension extends the first antenna element arrangement in the direction of the antenna foot.

11. The antenna as claimed in claim 1, wherein the extension comprises a wire, rod or plate.

12. The antenna as claimed in claim 1, wherein the extension is shorter and broader than an extension in the form of a wire, rod or plate.

13. The antenna as claimed in claim 1, wherein the connecting line comprises a bracket.

14. The antenna as claimed in claim 13, wherein the extension together with the connecting line forms a common bracket.

15. The antenna as claimed in claim 1 wherein, a bridging piece leads to the first antenna element arrangement.

16. A multiband RF antenna comprising:

a mounting bracket;

a connecting line;

a first antenna element arrangement coupled to said connecting line and mounted on said mounting bracket;

a frequency selective impedance element;

a second antenna element arrangement coupled to the frequency selective impedance element, said frequency selective impedance element selectively coupling RF between said first and second antenna element arrangements, the first and second antenna elements acting as a substantially unified radiator at lower frequencies and said first antenna element arrangement but not said second antenna element arrangement radiating at higher frequencies; and

an electrically conductive extension of said mounting bracket comprising a branch of said connecting line, said extension allowing said antenna to operate at still higher frequencies.