MULTILAYER PATCH ANTENNA

• US 20200136257A1
• Filed: 03/06/2018
• Published: 04/30/2020
• Est. Priority Date: 03/14/2017
• Status: Active Grant

• Current Assignee: Amotech Co., Ltd.
• Original Assignee: Amotech Co., Ltd.
• Inventors: HWANG, Chul
• Granted Patent: US 11,189,926 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/3275 mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 9/0414 in a stacked or folded configuration
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/045 with particular feeding means for circular polarisation H01Q9/0428

Abstract

Presented is a multilayer patch antenna which prevents the occurrence of parasitic resonance by having a metal layer formed on the inner wall of a thru-hole, among a plurality of thru-holes formed in a lower patch antenna, penetrated by a power feeding pin of an upper patch antenna. The multilayer patch antenna presented herein comprises: an upper patch antenna having a first thru-hole formed therein; a lower patch antenna having a second thru-hole and a third thru-hole formed therein, away from each other; a first upper power feeding pin protruding under the lower patch antenna by penetrating the first thru-hole and the second thru-hole; a lower power feeding pin protruding under the lower patch antenna by penetrating the third thru-hole; and a metal layer formed inside the second thru-hole.

Claims

1. A multilayer patch antenna, comprising:

an upper patch antenna having a first thru-hole formed therein;

a lower patch antenna having a second thru-hole and a third thru-hole formed to be spaced apart from each other;

a first upper power feeding pin protruding under the lower patch antenna by penetrating the first thru-hole and the second thru-hole;

a lower power feeding pin protruding under the lower patch antenna by penetrating the third thru-hole; and

a metal layer formed inside the second thru-hole.

2. The multilayer patch antenna of claim 1,

wherein the metal layer comprises a first metal layer formed on the inner wall surface of the second thru-hole.

3. The multilayer patch antenna of claim 2,

wherein the second thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, and

wherein the first metal layer is formed on the inner wall surface of the second thru-hole formed in the base substrate.

4. The multilayer patch antenna of claim 3,

wherein the first metal layer is connected to the upper radiation patch and the lower radiation patch.

5. The multilayer patch antenna of claim 2,

wherein the second thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, and

wherein the first metal layer is formed on the inner wall surface of the second thru-hole formed in the base substrate, the upper radiation patch, and the lower radiation patch.

6. The multilayer patch antenna of claim 2,

wherein the first metal layer is disposed to be spaced apart from the outer circumference of the first upper power feeding pin penetrating the second thru-hole.

7. The multilayer patch antenna of claim 1,

wherein the upper patch antenna is further formed with a fourth thru-hole spaced apart from the first thru-hole,

wherein the lower patch antenna is further formed with a fifth thru-hole spaced apart from the second thru-hole and the third thru-hole, and

further comprising a second upper power feeding pin penetrating the fourth thru-hole and the fifth thru-hole to be protruded downwards from the lower patch antenna.

8. The multilayer patch antenna of claim 7,

wherein the metal layer comprises a second metal layer formed on the inner wall surface of the fifth thru-hole.

9. The multilayer patch antenna of claim 8,

wherein the fifth thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, and

wherein the second metal layer is formed on the inner wall surface of the fifth thru-hole formed in the base substrate.

10. The multilayer patch antenna of claim 9,

wherein the second metal layer is connected to the upper radiation patch and the lower radiation patch.

11. The multilayer patch antenna of claim 8,

wherein the fifth thru-hole penetrates an upper radiation patch, a base substrate, and a lower radiation patch of the lower patch antenna, and

wherein the second metal layer is formed on the inner wall surface of the fifth thru-hole formed in the base substrate, the upper radiation patch, and the lower radiation patch.

12. The multilayer patch antenna of claim 8,

wherein the second metal layer is disposed to be spaced apart from the outer circumference of the second upper power feeding pin penetrating the fifth thru-hole.