PLANAR ANTENNA

• US 20170054217A1
• Filed: 08/17/2016
• Published: 02/23/2017
• Est. Priority Date: 08/20/2015
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: HASHIMOTO, Koh, HIGAKI, Makoto, MUKAI, Manabu
• Granted Patent: US 10,658,755 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 21/065 Patch antenna array
• 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 9/0457 electromagnetically coupled to the feed line

Abstract

A plane antenna device includes a multi-layered dielectric substrate having a plurality of dielectric layers; a first conductive plane on or in the multi-layered dielectric substrate; a second conductive plane on or in the multi-layered dielectric substrate, wherein at least first and second dielectric layers of the plurality of dielectric layers are disposed between the first and second conductive planes; a first signal line being between the at least first and second dielectric layers, the first signal line being between the first conductive plane and the second conductive plane; a first conductive via in the first dielectric layer, the first conductive via being distanced from the first signal line; and a second conductive via in the second dielectric layer, the second conductive via being distanced from the first signal line, the second conductive via being aligned to the first conductive via.

Claims

1. A plane antenna device comprising:

a multi-layered dielectric substrate having a plurality of dielectric layers;

a first conductive plane on or in the multilayered dielectric substrate;

a second conductive plane on or in the multi-layered dielectric substrate, wherein at least first and second dielectric layers of the plurality of dielectric layers are disposed between the first and second conductive planes;

a first signal line being between the at least first and second dielectric layers, the first signal line being between the first conductive plane and the second conductive plane;

a first conductive via in the first dielectric layer, the first conductive via being distanced from the first signal line; and

a second conductive via in the second dielectric layer, the second conductive via being distanced from the first signal line, the second conductive via being aligned to the first conductive via.

2. The plane antenna device according to claim 1,

wherein the first conductive via in contact with the first conductive plane, and

wherein the second conductive via in contact with the second conductive plane.

3. The plane antenna device according to claim 1,

wherein the first conductive via is spaced apart from the first conductive plane, the first conductive via has capacitive coupling with the first conductive plane, and

wherein the second conductive via is spaced apart from the second conductive plane, and the second conductive via has capacitive coupling with the second conductive plane.

4. The plane antenna device according to claim 1,

wherein the first conductive via is in contact with the first conductive plane, and

wherein the second conductive via is spaced apart from the second conductive plane, and the second conductive via has capacitive coupling with the second conductive plane.

5. The plane antenna device according to claim 1,

wherein the first conductive via is spaced apart from the first conductive plane, and the first conductive via has capacitive coupling with the first conductive plane, and

wherein the second conductive via is in contact with the second conductive plane.

6. The plane antenna device according to claim 1,

wherein the first and second dielectric layers are adjacent to each other, and

wherein the first and second conductive vias are in contact with each other.

7. The plane antenna device according to claim 1,

wherein the first and second dielectric layers are adjacent to each other, and

wherein the first and second conductive vias are in capacitive coupling with each other.

8. The planar antenna according to claim 7, further comprising:

an adhesive layer between the first and second conductive vias.

9. The planar antenna according to claim 1, further comprising:

a radiating element on the multi-layered dielectric substrate, the radiating element being spaced apart from the first and second conductive planes,

wherein the first conductive plane has an aperture, and at least a part of the aperture is covered by the radiating element, and

wherein at least a part of the first signal line and he at least part of the aperture are aligned to each other.

10. The planar antenna according to claim 9,

wherein the radiating element is spaced apart from the first signal line.

11. The planar antenna according to claim 1, further comprising:

a radiating element in the multi-layered dielectric substrate, the radiating element being between the first and second conductive planes,

wherein the first conductive plane has an aperture, and at least a part of the aperture is aligned to at least a part of the radiating element, and

wherein the radiating element is connected directly with the first signal line.

12. The planar antenna according to claim 1,

wherein the first conductive plane has an aperture, and

wherein at least a part of the signal line and at least a part of the aperture are aligned to each other.

13. The planar antenna according to claim 1, further comprising:

a first conductive pattern on the first conductive plane;

a second conductive pattern on the second conductive plane; and

the first and second conductive patterns being between the first and second conductive vias,

the first conductive pattern being electrically connected with the second conductive via,

the second conductive pattern being electrically connected with the first conductive via.

14. The planar antenna according to claim 1, further comprising:

a second signal line being between the at least first and second dielectric layers, the second signal line being between the first conductive plane and the second conductive plane, the second signal line being electrically connected to the first signal line;

a first radiating element connected to the first signal line; and

a second radiating element connected to the second signal line.

15. The planar antenna according to claim 1, further comprising:

a first radiating element on the multi-layered dielectric substrate;

a second radiating element on the multi-layered dielectric substrate, the second radiating element being spaced apart from the first radiating element; and

a second signal line being between the at least first and second dielectric layers, the second signal line being between the first conductive plane and the second conductive plane, the second signal line being electrically connected to the first signal line,

wherein at least a part of the first signal line is covered by at least a part of the first radiating element, and

wherein at least a part of the second signal line is covered by at least a part of the second radiating element.

16. The planar antenna according to claim 1, further comprising:

a two-dimensional array of radiating elements; and

a plurality of signal lines including the first signal line, each of the plurality of signal lines being electrically connected to an associated one of the radiating elements, the plurality of signal lines being between the at least first and second dielectric layers, the plurality of signal lines being between the first conductive plane and the second conductive plane, the plurality of signal lines being electrically connected to each other.

17. The planar antenna according to claim 1, further comprising:

a two-dimensional array of radiating elements spaced apart from each other, the two-dimensional array of radiating elements being on the multi-layered dielectric substrate; and

a plurality of signal lines including the first signal line, the plurality of signal lines being between the at least first and second dielectric layers, the plurality of signal lines being between the first conductive plane and the second conductive plane, the plurality of signal lines being electrically connected to each other,

wherein at least a part of each of the plurality of signal lines is .covered by at least a part of an associated one of the plurality of radiating elements.

18. The planar antenna according to claim 16,

wherein the two-dimensional array of radiating elements are a 2^N×

2^N two-dimensional matrix, where N is a natural number.

19. The planar antenna according to claim 17,

wherein the plurality of radiators are provided in a 2^N×

2^N two-dimensional matrix, where N is a natural number.

20. The planar antenna according to claim 16,

wherein the plurality of radiators are provided in a 2^N×

2<sup>N−

1</sup> two-dimensional matrix, where N is a natural number of 2 or greater.

21. The planar antenna according to claim 17,

wherein the plurality of radiators are provided in a 2^N×

2<sup>N−

1</sup> two-dimensional matrix, where N is a natural number of 2 or greater.

22. A planar antenna comprising:

a first conductive plane; and

a first dielectric layer adjacent to the first conductive plane;

a first signal line adjacent to the first dielectric layer, the first signal line being separated from the first conductive plane by the first dielectric layer;

a second dielectric layer adjacent to the first signal line and to the first dielectric layer, the first signal line being between the first and second dielectric layers;

a second conductive plane adjacent to the second dielectric layer, the second conductive plane being separated from first signal line by the second dielectric layer;

a first conductive via in the first dielectric layer, the first conductive via being connected to the first conductive plane; and

a second conductive via in the second dielectric layer, the second conductive via being connected to the second conductive plane, the second conductive via being aligned to the first conductive via.

23. A planar antenna comprising:

first conductive plane;

a first dielectric layer adjacent to the first conductive plane;

a first signal line adjacent to the first dielectric layer, the first signal line being separated from the first conductive plane by the first dielectric layer;

a second dielectric layer adjacent to the first signal line and to the first dielectric layer, the first signal line being between the first and second dielectric layers;

a second conductive plane adjacent to the second dielectric layer, the second conductive plane being separated from the first signal line by the second dielectric layer;

a third dielectric layer adjacent to the second conductive plane;

a second signal line adjacent to the third dielectric layer, the second signal line being separated from the second conductive plane by the third dielectric layer, the second signal line extending cross the first signal line in a view of a direction vertical to the first and second conductive planes;

a fourth dielectric layer adjacent to the second signal line and to the third dielectric layer, the second signal line being between the third and fourth dielectric layers;

a third conductive plane adjacent to the fourth dielectric layer, the third conductive plane being separated from the second signal line by the fourth dielectric layer;

a first conductive via in the first dielectric layer, the first conductive via being connected to the first conductive plane;

a second conductive via in the second dielectric layer, the second conductive via being connected to the second conductive plane, the second conductive via being aligned to the first conductive via;

a third conductive via in the third dielectric layer;

a fourth conductive via in the fourth dielectric layer, the fourth conductive via being connected to the third conductive plane, the fourth conductive via being aligned to the third conductive via.