ANTENNA ASSEMBLY WITH COMPACT LAYOUT TRACES

• US 20190326683A1
• Filed: 01/03/2019
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Alpha Networks Incorporated
• Original Assignee: Alpha Networks Incorporated
• Inventors: SU, De-Chang, YANG, Chih-Kai
• Granted Patent: US 11,088,445 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 1/523 between antennas of an array
• CPC Class Codes: H01Q 21/0006 Particular feeding systems
• CPC Class Codes: H01Q 5/307 Individual or coupled radiating elements, each element being fed in an unspecified way
• CPC Class Codes: H01Q 5/42 using two or more imbricated arrays H01Q5/49 takes precedence
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence

Abstract

An antenna assembly with compact layout traces includes a circuit board and at least one wireless antenna unit, wherein the circuit board is provided with an antenna module, the at least one wireless antenna unit can be located at the same edge or at different edges of the circuit board, each of the at least one wireless antenna unit includes two antennas of the planar inverted-F antenna (PIFA) structure and a neutralization line, and the two antennas are spaced apart from each other and the two ends of the neutralization line are electrically connected to and overlap the two antennas respectively. By arranging antennas of the same working band along the same edge of the circuit board, the corresponding layout traces can be effectively shortened.

Claims

1. An antenna assembly with compact layout traces, wherein the antenna assembly is applicable to a multi-input multi-output (MIMO) system-based product, the antenna assembly comprising:

a circuit board provided with a low-frequency module and a high-frequency module;

at least one low-frequency antenna unit located at an edge of the circuit board and electrically connected to the low-frequency module, wherein the low-frequency antenna unit is composed of a first low-frequency antenna of a planar inverted-F antenna (PIFA) structure, a second low-frequency antenna of the PIFA structure, and a low-frequency neutralization line;

the first low-frequency antenna and the second low-frequency antenna are spaced apart from each other;

the low-frequency neutralization line has two ends corresponding respectively to the first low-frequency antenna and the second low-frequency antenna in an overlapping manner; and

the two ends of the low-frequency neutralization line are electrically connected to the first low-frequency antenna and the second low-frequency antenna respectively; and

at least one high-frequency antenna unit located at another edge of the circuit board and electrically connected to the high-frequency module, wherein the high-frequency antenna unit is composed of a first high-frequency antenna of the PIFA structure, a second high-frequency antenna of the PIFA structure, and a high-frequency neutralization line;

the first high-frequency antenna and the second high-frequency antenna are spaced apart from each other;

the high-frequency neutralization line has two ends corresponding respectively to the first high-frequency antenna and the second high-frequency antenna in an overlapping manner; and

the two ends of the high-frequency neutralization line are electrically connected to the first high-frequency antenna and the second high-frequency antenna respectively.

2. The antenna assembly of claim 1, wherein the low-frequency antenna unit operates at 2 GHz˜

2.5 GHz.

3. The antenna assembly of claim 2, wherein the high-frequency antenna unit operates at 5 GHz˜

5.85 GHz.

4. The antenna assembly of claim 1, wherein the low-frequency neutralization line is electrically connected to the first low-frequency antenna and the second low-frequency antenna separately.

5. The antenna assembly of claim 4, wherein the high-frequency neutralization line is electrically connected to the first high-frequency antenna and the second high-frequency antenna separately.

6. The antenna assembly of claim 5, wherein the first low-frequency antenna and the second low-frequency antenna are located in/on different layers of the circuit board.

7. The antenna assembly of claim 6, wherein the first high-frequency antenna and the second high-frequency antenna are located in/on different layers of the circuit board.

8. The antenna assembly of claim 7, wherein the low-frequency neutralization line or the high-frequency neutralization line is of an assembled configuration, a winding configuration, or a step-shaped configuration.

9. An antenna assembly with compact layout traces, wherein the antenna assembly is applicable to a multi-input multi-output (MIMO) system-based product, the antenna assembly comprising:

a circuit board provided with a low-frequency module and a high-frequency module;

at least one low-frequency antenna unit located at an edge of the circuit board and electrically connected to the low-frequency module, wherein the low-frequency antenna unit is composed of a first low-frequency antenna of a planar inverted-F antenna (PIFA) structure, a second low-frequency antenna of the PIFA structure, and a low-frequency neutralization line;

the first low-frequency antenna and the second low-frequency antenna are spaced apart from each other;

the low-frequency neutralization line has two ends corresponding respectively to the first low-frequency antenna and the second low-frequency antenna in an overlapping manner; and

the two ends of the low-frequency neutralization line are electrically connected to the first low-frequency antenna and the second low-frequency antenna respectively; and

at least one high-frequency antenna unit located at the same edge of the circuit board as the low-frequency antenna unit and electrically connected to the high-frequency module, wherein the high-frequency antenna unit is composed of a first high-frequency antenna of the PIFA structure, a second high-frequency antenna of the PIFA structure, and a high-frequency neutralization line;

the first high-frequency antenna and the second high-frequency antenna are spaced apart from each other;

the high-frequency neutralization line has two ends corresponding respectively to the first high-frequency antenna and the second high-frequency antenna in an overlapping manner; and

the two ends of the high-frequency neutralization line are electrically connected to the first high-frequency antenna and the second high-frequency antenna respectively.

10. The antenna assembly of claim 9, wherein the low-frequency antenna unit operates at 2 GHz˜

2.5 GHz.

11. The antenna assembly of claim 10, wherein the high-frequency antenna unit operates at 5 GHz˜

5.85 GHz.

12. The antenna assembly of claim 9, wherein the low-frequency neutralization line is electrically connected to the first low-frequency antenna and the second low-frequency antenna separately.

13. The antenna assembly of claim 12, wherein the high-frequency neutralization line is electrically connected to the first high-frequency antenna and the second high-frequency antenna separately.

14. The antenna assembly of claim 13, wherein the first low-frequency antenna and the second low-frequency antenna are located in/on different layers of the circuit board.

15. The antenna assembly of claim 14, wherein the first high-frequency antenna and the second high-frequency antenna are located in/on different layers of the circuit board.

16. The antenna assembly of claim 15, wherein the low-frequency neutralization line or the high-frequency neutralization line is of an assembled configuration, a winding configuration, or a step-shaped configuration.

17. An antenna assembly with compact layout traces, comprising:

a circuit board provided with an antenna module; and

at least one wireless antenna unit located at an edge of the circuit board and electrically connected to the antenna module, wherein the wireless antenna unit is composed of a first antenna of a planar inverted-F antenna (PIFA) structure, a second antenna of the PIFA structure, and a neutralization line;

the first antenna and the second antenna are spaced apart from each other;

the neutralization line has two ends corresponding respectively to the first antenna and the second antenna in an overlapping manner; and

the two ends of the neutralization line are electrically connected to the first antenna and the second antenna respectively.

18. The antenna assembly of claim 17, wherein the neutralization line is electrically connected to the first antenna and the second antenna separately.

19. The antenna assembly of claim 18, wherein the first antenna and the second antenna are located in/on different layers of the circuit board.

20. The antenna assembly of claim 19, wherein the neutralization line is of an assembled configuration, a winding configuration, or a step-shaped configuration.