Allround aerial arrangement for receiving terrestrial and satellite signals

• US 20040140940A1
• Filed: 12/04/2003
• Published: 07/22/2004
• Est. Priority Date: 03/07/2002
• Status: Active Grant

• Current Assignee: Kathrein Automotive GmbH (Continental AG)
• Original Assignee: Kathrein-Werke KG. (Kathrein SE)
• Inventors: Prassmayer, Pete, Vothknecht, Marco
• Granted Patent: US 6,909,400 B2
• Time in Patent Office: Days
• US Class Current: 343/725
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0428 radiating a circular polarised wave
• CPC Class Codes: H01Q 9/32 Vertical arrangement of element H01Q9/40 takes precedence

Abstract

An improved combination antenna for receiving terrestrial, in particular vertically polarized signals, and for receiving in particular circular polarized satellite signals in accordance with the SDARS services, preferably in a 2.3 GHz band, having the following features:

a monopole arrangement (7) is provided for receiving terrestrial signals,

a satellite receiving antenna is provided for receiving circular polarized satellite signals,

only a single monopole (7) is provided, and

the satellite receiving antenna is in the form of a patch antenna (9).

Claims

1. A combination antenna for receiving terrestrial, in particular vertically polarized, signals and for receiving in particular circular polarized satellite signals in accordance with the SDARS services, preferably in a 2.3 GHz band, having the following features:

a monopole arrangement (7) is provided for receiving terrestrial signals,

a satellite receiving antenna is provided for receiving circular polarized satellite signals,

characterized by the following further features;

only a single monopole (7) is provided, and

the satellite receiving antenna is in the form of a patch antenna (9).

2. The combination antenna as claimed in claim 1, characterized in that both the monopole (7) and the patch antenna (9) are formed and connected on a substrate (1), preferably in the form of a printed circuit board (1′

).

3. The combination antenna as claimed in claim 1 or 2, characterized in that the monopole (7) is in the form of a rod monopole (7a).

4. The combination antenna as claimed in claim 1 or 2, characterized in that the monopole (7) is formed from an inverted F antenna (7b).

5. The combination antenna as claimed in claim 1 or 2, characterized in that the monopole (7, 7c) is formed from a stripline conductor (21) or from a printed structure, which is preferably formed on a further substrate (19), in particular in the form of a printed circuit board.

6. The combination antenna as claimed in claim 5, characterized in that the stripline conductor (21) is provided such that it runs in a meandering shape on the substrate (19).

7. The combination antenna as claimed in claim 1 or 2, characterized in that the rod monopole (7, 7d) is provided with a coil former (23) at the end opposite the substrate (1).

8. The combination antenna as claimed in claim 1 or 2, characterized in that an annular slot (33) is formed in one housing wall (29′

) of a housing (29) which surrounds a cavity (27).

9. The combination antenna as claimed in claim 8, characterized in that the patch antenna (9) is arranged within the annular slot (33).

10. The combination antenna as claimed in claim 8 or 9, characterized in that the cavity (27) is filled with a dielectric.

11. The combination antenna as claimed in claim 10, characterized in that the dielectric is glass or ceramic.

12. The combination antenna as claimed in one of claims 1 to 11, characterized in that the monopole (7) is arranged on a vertical central longitudinal plane (13) which passes through the patch antenna (9), with the vertical central longitudinal plane (13) being aligned at right angles or parallel to the side boundary edges (14) of the patch antenna (9).

13. The combination antenna as claimed in one of claims 1 to 11, characterized in that the monopole (7) is arranged on a vertical central longitudinal plane (13) which passes through the diagonal of the patch antenna (9).