PCB APPLIED TO WIRELESS TERMINAL AND WIRELESS TERMINAL

• US 20140159981A1
• Filed: 12/30/2013
• Published: 06/12/2014
• Est. Priority Date: 12/07/2012
• Status: Abandoned Application

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: WANG, Hanyang
• Application Number:
  US14/143,896
• Publication Number:
  US 20140159981A1
• Time in Patent Office: Days
• US Class Current: 343/841
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00

Abstract

Embodiments of the present disclosure provide a PCB connected to a wireless terminal and a wireless terminal. In the embodiments of the present disclosure, distribution of current on a PCB may be changed by resonance current that is generated by a resonant component included in the PCB, so that isolation between at least two antennas increases. In addition, due to existence of the resonance current, electromagnetic radiation capability of the PCB may be increased, so that radiation efficiency of each antenna increases, thereby improving wireless performance of the wireless terminal and effectively ensuring wireless performance of the wireless terminal in various application scenarios. Furthermore, the wireless terminal provided in the embodiment of the present disclosure is simple and easy to implement and has a low cost.

Claims

1. A PCB connected to a wireless terminal, wherein the PCB comprises a resonant component and the PCB is connected to at least two antennas of the wireless terminal by a part of the PCB other than the resonant component.

2. The PCB connected to a wireless terminal according to claim 1, further including a first gap that splits the PCB into a first part and a second part, the second part is connected to the at least two antennas, the second part comprises a metal ground, and the first part is connected to the metal ground of the second part, wherein,

the resonant component is the first part, and a length of the first part is one fourth of an equivalent wavelength of a resonant frequency band of the resonant component;

or

the first part is connected to a conductor, the resonant component is the first part, and a sum of lengths of the first part and the conductor is one fourth of an equivalent wavelength of a resonant frequency band of the resonant component.

3. The PCB connected to a wireless terminal according to claim 2, further including an inductor on the first part, and the inductor is connected to the metal ground of the second part.

4. The PCB connected to a wireless terminal according to claim 2, further including a second gap on the PCB, wherein the second gap splits the PCB into a third part and a fourth part, the fourth part is connected to the at least two antennas, the fourth part comprises a metal ground, and the third part is connected to the metal ground of the fourth part;

and a resonant network on the third part.

5. The PCB connected to a wireless terminal according to claim 4, wherein the resonant network includes a capacitor, or an inductor and a capacitor.

6. The PCB connected to a wireless terminal according to claim 1, wherein the PCB has a multi-layer structure;

a third gap on a first-layer structure of the PCB, wherein the third gap splits the first-layer structure into a fifth part and a sixth part, the sixth part is connected to the at least two antennas, the sixth part comprises a metal ground, and the fifth part is connected to the metal ground of the sixth part;

a fourth gap on a second-layer structure of the PCB, wherein the fourth gap splits the second-layer structure into a seventh part and an eighth part, the eighth part is connected to the at least two antennas, the eighth part comprises a metal ground, and the seventh part is connected to the metal ground of the eighth part; and

the fifth part and the seventh part have an overlap in a vertical direction of a plane on which the PCB resides.

7. A wireless terminal, comprising at least two antennas and a PCB having a resonant component, wherein the PCB is connected to the at least two antennas by a part of the PCB other than the resonant component.

8. The wireless terminal of claim 7, wherein the PCB further includes a first gap that splits the PCB into a first part and a second part, the second part is connected to the at least two antennas, the second part comprises a metal ground, and the first part is connected to the metal ground of the second part, wherein,

the resonant component is the first part, and a length of the first part is one fourth of an equivalent wavelength of a resonant frequency band of the resonant component;

or

the first part is connected to a conductor, the resonant component is the first part, and a sum of lengths of the first part and the conductor is one fourth of an equivalent wavelength of a resonant frequency band of the resonant component.

9. The wireless terminal of claim 8, wherein the PCB further includes an inductor on the first part, and the inductor is connected to the metal ground of the second part.

10. The wireless terminal of claim 8, wherein the PCB further includes a second gap on the PCB, wherein the second gap splits the PCB into a third part and a fourth part, the fourth part is connected to the at least two antennas, the fourth part comprises a metal ground, and the third part is connected to the metal ground of the fourth part;

and a resonant network on the third part.

11. The wireless terminal of claim 10, wherein the resonant network includes a capacitor, or an inductor and a capacitor.

12. The wireless terminal of claim 7, wherein the PCB has a multi-layer structure;

a third gap on a first-layer structure of the PCB, wherein the third gap splits the first-layer structure into a fifth part and a sixth part, the sixth part is connected to the at least two antennas, the sixth part comprises a metal ground, and the fifth part is connected to the metal ground of the sixth part;

a fourth gap on a second-layer structure of the PCB, wherein the fourth gap splits the second-layer structure into a seventh part and an eighth part, the eighth part is connected to the at least two antennas, the eighth part comprises a metal ground, and the seventh part is connected to the metal ground of the eighth part; and

the fifth part and the seventh part have an overlap in a vertical direction of a plane on which the PCB resides.