Antenna substrate and antenna module comprising the same

Patent metadata

Field	Value
Publication number	US-12456811-B2
Application number	US-202318383165-A
Country	US
Kind code	B2
Filing date	Oct 24, 2023
Priority date	Dec 10, 2019
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

An antenna substrate and an antenna module including the same are provided. The antenna substrate includes an antenna unit including first and second pattern layers adjacent to each other and disposed on different levels and a first insulating layer providing a first insulating region between the first and second pattern layers, and a feed unit including third and fourth pattern layers adjacent to each other and disposed on different levels and a second insulating layer providing a second insulating region between the third and fourth pattern layers. Each of the first and second pattern layers includes an antenna pattern, and each of the third and fourth pattern layers includes a feed pattern. The antenna unit is disposed on the feed unit. The first insulating region is thicker than the second insulating region.

First claim

What is claimed is:

1. An antenna substrate, comprising:
an antenna unit including first and second pattern layers, and a plurality of insulating layers including a first insulating layer providing a first insulating region between the first and second pattern layers and being in contact with the first and second pattern layers;
a feed unit including third and fourth pattern layers, and a second insulating layer providing a second insulating region between the third and fourth pattern layers; and
a core portion including a core layer, and first and second core pattern layers adjacent to each other with the core layer interposed therebetween,
wherein each of the first and second pattern layers, and the first core pattern layer, includes an antenna pattern,
each of the third and fourth pattern layers includes a feed pattern,
the core portion is disposed between the antenna unit and the feed unit,
the first insulating region is thicker than the second insulating region,
the plurality of insulating layers of the antenna unit include a third insulating layer interposed between the first core pattern layer and the first pattern layer, and
the third insulating layer is in contact with the first insulating layer and the first pattern layer, and in direct contact with the core layer.

2. The antenna substrate of claim 1 , wherein a thickness of the antenna unit is greater than a thickness of the feed unit.

3. The antenna substrate of claim 1 , wherein a thickness of the core layer is greater than a thickness of each of the plurality of insulating layers included in the antenna unit and a thickness of each of a plurality of insulating layers included in the feeding unit.

4. The antenna substrate of claim 1 , wherein the third insulating layer of the plurality of insulating layers included in the antenna unit provides a third insulating region between the first pattern layer and the first core pattern layer,
a fourth insulating layer of the plurality of insulating layers included in the feeding unit provides a fourth insulating region between the third pattern layer and the second core pattern layer,
the second pattern layer, the first pattern layer, the first core pattern layer, the second core pattern layer, the third pattern layer, and the fourth pattern layer are disposed in this order or vice versa in a stacking direction of the feed unit, the core portion, and the antenna unit, and
the third insulating region is thicker than the fourth insulating region.

5. The antenna substrate of claim 4 , wherein the fourth insulating layer is interposed between the second core pattern layer and the third pattern layer, the fourth insulating layer is in contact with the second insulating layer and the third pattern layer.

6. The antenna substrate of claim 1 , wherein the number of the plurality of insulating layers included in the antenna unit and the number of the plurality of insulating layers included the feed unit are the same.

7. The antenna substrate of claim 1 , wherein a thickness of the first core pattern layer is thicker than a thickness of each of the first and second pattern layers.

8. The antenna substrate of claim 1 , wherein a thickness of the second core pattern layer is thicker than a thickness of each of the third and fourth pattern layers.

9. The antenna substrate of claim 1 , wherein the antenna unit further includes a fifth pattern layer,
a fifth insulating layer of the plurality of insulating layers included in the antenna unit provides a fifth insulating region between the second and fifth pattern layers,
the feed unit further includes a sixth pattern layer,
a sixth insulating layer of a plurality of insulating layers included in the feed unit provides a sixth insulating region between the fourth and sixth pattern layers,
the fifth pattern layer, the second pattern layer, the first pattern layer, the third pattern layer, the fourth pattern layer, and the sixth pattern layer are disposed in this order or vice versa in a stacking direction of the feed unit and the antenna unit,
the fifth pattern layer includes an antenna pattern,
the sixth pattern layer includes a feed pattern,
the first insulating region is thicker than each of the second and sixth insulating regions, and
the fifth insulating region is thicker than each of the second and sixth insulating regions.

10. The antenna substrate of claim 9 , wherein the fifth insulating layer is in contact with an upper portion of the first insulating layer and the second pattern layer.

11. An antenna substrate, comprising:
a plurality of first insulating layers;
a plurality of first pattern layers, each including an antenna pattern and disposed directly on an upper surface of a respective one of the plurality of first insulating layers;
a plurality of second insulating layers;
a plurality of second pattern layers, each including a feed pattern and disposed directly on a lower surface of a respective one of the plurality of second insulating layers; and
passivation layers respectively disposed on an upper surface of an uppermost layer of the plurality of first insulating layers and a lower surface of a lowermost layer of the plurality of second insulating layers,
wherein a lowermost layer of the plurality of first insulating layers directly contacts with an uppermost layer of the plurality of the second insulating layers,
a thickness of the lowermost layer of the plurality of first insulating layers is greater than a thickness of the uppermost layer of the plurality of the second insulating layers, and
the number of the plurality of first insulating layers is greater than the number of the plurality of second insulating layers.

12. The antenna substrate of claim 11 , wherein a sum of thicknesses of the plurality of first insulating layers is greater than a sum of thicknesses of the plurality of second insulating layers.

13. The antenna substrate of claim 11 , further comprising a flexible portion extending from at least one of the plurality of second insulating layers and one of the plurality of second pattern layers.

14. The antenna substrate of claim 11 , wherein a thickness of each of the plurality of first insulating layers is greater than a thickness of each of the plurality of second insulating layers.

Assignees

• Samsung Electro Mech

Inventors

• Yi Moon Hee
• Kim Tae Seong

Classifications

• H01Q1/422

  comprising two or more layers of dielectric material (H01Q1/425 takes precedence) · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H05K1/115

  Via connections; Lands around holes or via connections (H05K1/112 takes precedence) · CPC title

• H05K3/4691

  Rigid-flexible multilayer circuits comprising rigid and flexible layers, e.g. having in the bending regions only flexible layers · CPC title

• H05K3/4602

  characterized by a special circuit board as base or central core whereon additional circuit layers are built or additional circuit boards are laminated · CPC title