Multi-beam phase-array antenna device

• US 6,362,780 B1
• Filed: 04/11/2000
• Issued: 03/26/2002
• Est. Priority Date: 04/16/1999
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Diercks, Hans-Peter, Butz, Juergen
• Primary Examiner(s): Blum, Theodore M.
• Application Number:
  US09/546,761
• Time in Patent Office: 714 Days
• Field of Search: 342/373, 342/372, 342/157, 342/158
• US Class Current: 342/373
• CPC Class Codes: H01Q 21/0025 Modular arrays
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence

Abstract

A multi-beam phase-array antenna device includes beam configuring devices (BFN) arranged in respective separate groups behind corresponding radiator elements (SE1 . . . SEm). In each group the beam configuring devices (BFN) are arranged one after the other along a first predetermined direction behind the associated radiator element. The number of beam configuring devices in each separate group is selected according to the number (n) of antenna signals. A signal combining device (SK) is provided for each separate group of beam forming devices (BFN). Signal distributing devices (VR1 . . . VRn) for control of the beam configuring devices are preferably mounted on the rear side of a circuit-carrying substrate (SU) for the beam configuring devices (BFN), in order to provide a compact structure. An especially compact and economical structure is provided when the transverse cross-section of each group is adjusted to the area of the associated radiator element.

Claims

1. A multi-beam phase-array antenna device comprising

a plurality (m) of radiator elements (SE1 . . . SEm) arranged in a matrix array;

a plurality of signal distributing devices (V1 . . . Vn) corresponding in number to the number (n) of beams received during receiving operation or transmitted during transmission operation;

beam configuring devices (BFN) for controlling the radiator elements arranged in succession one behind the other in respective separate groups extending in a first predetermined direction behind corresponding individual ones of the radiator elements, wherein the beam configuring devices (BFN) in each of said groups correspond in number to the number (n) of beams received during receiving operation or transmitted during transmission operation;

multiplex connection means (KF) for connecting the signal distributing devices (V1 . . . Vn) with the beam configuring devices (BFN); and

signal combining means (SK) for directly connecting the beam configuring devices (BFN) in said respective separate groups to the corresponding radiator elements (SE1 . . . SEm) or for connecting the beam configuring devices (BFN) to the corresponding radiator elements (SE1 . . . SEm) by means of amplifying devices (VS1 . . . VSm) and filter devices (FI1 . . . FIm).

2. The antenna device as defined in claim 1, further comprising trough-shaped stackable modules (WM), each of said troughhaped stackable modules comprising a separate set of said respective separate groups of the beam configuring devices (BFN).

3. The antenna device as defined in claim 2, wherein said trough-shaped stackable modules (WM) are stacked one over the other in another predetermined direction to form a symmetric block of said beam configuring devices (BFN).

4. The antenna device as defined in claim 3, wherein said another predetermined direction is perpendicular to said first predetermined direction.

5. The antenna device as defined in claim 3, wherein the beam configuring devices (BFN) in said respective separate groups are connected to the corresponding radiator elements (SE1 . . . SEm) by means of the amplifying devices (VS1 . . . VSm) and the filter devices (FI1 . . . FIm), the amplifying devices are power amplifiers and the amplifying devices (VS1 . . . VSm) and the filter devices (FI1 . . . FIm) are arranged in said trough-shaped stackable modules.

6. The antenna device as defined in claim 5, wherein said trough-shaped stackable modules (WM) comprise shielding walls (ZW) and said shielding walls (ZW) separate said respective separate groups of the beam configuring devices (BFN) from each other.

7. The antenna device as defined in claim 5, wherein said trough-shaped stackable modules (WM) comprise additional shielding walls (SW) and said additional shielding walls (SW) separate the amplifying devices (VS1 . . . VSm) and the filter devices (FI1 . . . FIm) from the beam configuring devices (BFN) within each of said trough-shaped stackable module (WM).

8. The antenna device as defined in claim 3, wherein respective circuit-carrying substrates (SU) are arranged in the trough-shaped stackable modules (WM), said respective circuit-carrying substrates have conducting structures for the beam configuring devices (BFN) on one substrate side of each of the substrates and other conducting structures for at least part of the signal distributing devices (V1 . . . Vn) on another substrate side of each of said substrates opposite from the one substrate side.

9. The antenna device as defined in claim 8, wherein said other conducting structures are orthogonal to said conducting structures.

10. The antenna device as defined in claim 8, wherein said multiplex connection means (KF) comprises signal guides provided in said respective circuit-carrying substrates (SU) of said trough-shaped stackable modules (WM) to connect said conducting structures and said other conducting structures.

11. The antenna device as defined in claim 1, wherein said signal combining means (SK) is arranged in a middle portion of each of said respective separate groups of said beam configuring devices (BFN).

12. The antenna device as defined in claim 8, wherein said trough-shaped stackable modules (WM) have inputs (E1 . . . E32) for said at least part (VR1 . . . VR4) of the signal distributing devices on said another side of said respective circuit-carrying substrates (SU) and said inputs (E1 . . . E32) are arranged on a lateral side of said symmetric block and said inputs (E1 . . . E32) are connected to terminals (B1 . . . B4) for the antenna signals received during receiving operation or transmitted during transmission operation by means of an additional part (VT1 . . . VT4) of said signal distributing devices and said signal combining means (SK) is arranged in a middle portion of each of said separate groups of said beam configuring devices (BFN).

13. The antenna device as defined in claim 1, wherein the signal distributing devices (V1 . . . Vn) or the signal combining devices (SK) comprise 3-dB power dividing devices, each of the 3-dB power dividing devices comprises a number of cascaded stages and the number of said cascaded stages is selected according to the number (n) of beams received during receiving operation or transmitted during transmission operation or according to the plurality of said radiator elements (SE1 . . . SEm), or both the signal distributing devices (V1 . . . Vn) and the signal combining devices (SK) comprise said 3-dB power dividing devices.

14. The antenna device as defined in claim 13, wherein the 3-dB power dividing devices are provided by strip line technology.

15. The antenna device as defined in claim 1, wherein the beam configuring devices (BFN) each comprise a phase regulator (P) and an amplitude regulator (A).

16. The antenna device as defined in claim 15, wherein the beam configuring devices (BFN) each comprise an intervening amplifier acting as an amplitude controller.

17. The antenna device as defined in claim 15, further comprising a monolithic microwave integrated circuit and wherein at least one of said phase regulator (P) and at least one of said amplitude regulator (A) are part of said monolithic microwave integrated circuit.

18. The antenna device as defined in claim 3, wherein said symmetric block of said beam configuring devices (BFN) includes signal inputs (BC) for adjustment of the beam configuring devices (BFN) and a current supply and said signal inputs (BC) are arranged on a side of said symmetric block.

19. The antenna device as defined in claim 3, further comprising a heat pipe device (HP) or a heat sink device (HS) in the vicinity of the amplifying devices (VS1 . . . VSm) extending in a further predetermined direction perpendicular to said respective groups of beam configuring devices (BFN) and arranged so that heat from the trough-shaped modules (WM) is conducted away to one side of said symmetric block of said trough-shaped stackable modules (WM).

20. The antenna device as defined in claim 1, wherein said respective separate groups of said beam configuring devices (BFN) each have a transverse cross-section, said transverse cross-section corresponds to an area of said corresponding radiator element and said respective groups of said beam configuring devices each have a length and said length is selected according to the number (n) of beams received during receiving operation or transmitted during transmission operation.

21. The antenna device as defined in claim 2, wherein said respective groups of said trough-shaped stackable modules (WM) are arranged differently in order to obtain a predetermined arrangement of cooperating active radiator elements (SE1 . . . SEm).

22. The antenna device as defined in claim 21, wherein said predetermined arrangement is in the form of a rectangle, a hexagon, an ellipse or a polygon.

23. The antenna device as defined in claim 21, wherein said predetermined arrangement is a rectangular row and column array.

24. The antenna device as defined in claim 21, wherein said predetermined arrangement is a hexagonal structure and said hexagonal structure is provided by a displacement of said respective groups, or said trough-shaped modules (WM) receiving said respective groups, with respect to each other by about half an edge length of one of said radiator elements.