CN103855474A

CN103855474A - Antenna

Info

Publication number: CN103855474A
Application number: CN201210508148.7A
Authority: CN
Inventors: 杜信龙; 张哲铭
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Nanning Fulian Fugui Precision Industrial Co Ltd
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2014-06-11
Anticipated expiration: 2032-12-03
Also published as: CN103855474B

Abstract

Provided is an antenna. The antenna comprises a substrate, a ground layer, a first antenna body and a second antenna body, and further comprises an isolation groove, wherein the ground layer is printed on the substrate, the first antenna body and the second antenna body are respectively of a three-dimensional shape, the isolation groove is formed between the first antenna body and the second antenna body, and is of a strip-shaped structure which is formed in the ground layer in a chiseled mode. According to the antenna, due to the fact that the first antenna body and the second antenna body are manufactured to be of a three-dimensional folding structure, space is saved; due to the fact that the isolation groove is formed between the first antenna body and the second antenna body, interference between the first antenna body and the second antenna body is prevented, and communication quality of the antenna is improved.

Description

Antenna

Technical field

The present invention relates to antenna, particularly a kind of joint space-efficient three-dimensional antenna.

Background technology

Along with advancing by leaps and bounds of wireless communication technology, mobile communication product has become the main flow of present stage sci-tech product, comprise mobile phone, mobile computer, personal digital assistant (Personal Digital Assistant, PDA) etc., these products are after being combined with communication module, not only can be connected to LAN, transmitting-receiving e-mail, more can receive as the real time information such as news, stock, make to reach each other the function of resource-sharing and transfer of data.

Above-mentioned mobile communication product generally need to be designed to smaller size smaller, and antenna is one of its indispensable assembly, becomes therefore reduce antenna volume a solution that reduces mobile communication equipment volume.Therefore, how to design compact conformation, the three-dimensional antenna of full utilization of physical length is a major challenge, also becomes current industry and is badly in need of improved target.

Summary of the invention

In view of this, be necessary to provide a kind of three-dimensional antenna, can reduce antenna volume and there is good radiance.

A kind of antenna, comprise substrate, be printed in ground plane, the first antenna and the second antenna on substrate, this first antenna comprises the first U-shaped main body, one first vertical portion is extended vertically downward and is connected with this substrate from an end of this first main body, the tie point of this first vertical portion and substrate is the first load point, one second vertical portion is extended vertically downward and is connected with this ground plane from another end of this first main body, and the tie point of this second vertical portion and this ground plane is the first earth point, this second antenna is arranged at the opening part of the first main body of this first antenna, between this first vertical portion and this second vertical portion, this second antenna comprises the second main body of the bending structure being made up of multiple end to end linking arms, one the 3rd vertical portion is extended vertically downward and is connected with this substrate from an end of this second main body, the tie point of the 3rd vertical portion and this substrate is the second load point, one the 4th vertical portion is extended vertically downward and is connected with this ground plane from another end of this second main body, the tie point of the 4th vertical portion and ground plane is the second earth point, this antenna also comprises an isolation channel, and this isolation channel is arranged between this first antenna and this second antenna, and this isolation channel is the list structure that is located at this ground plane.

The present invention, by this first antenna and the second antenna are made into stereo structure rugosity structure, has saved space, and by isolation channel is set between antenna, prevents the interference between antenna, thereby has improved the communication quality of antenna.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view of antenna in an embodiment of the present invention.

Fig. 2 is isolation and the return loss resolution chart of antenna shown in Fig. 1.

Main element symbol description

Antenna	100
		Substrate	10
Ground plane	20
		The first antenna	30
The second antenna	40
		The first load point	31
The first earth point	32
		The second load point	41
The second earth point	42
		Isolation channel	50

Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.

Embodiment

Below in conjunction with accompanying drawing, the antenna in the present invention is described in further detail.

Please refer to Fig. 1, the antenna 100 in the present invention's one preferred embodiments comprises substrate 10, ground plane 20, for the first antenna 30 of radiated electromagnetic wave, for the second antenna 40 and the isolation channel 50 of radiated electromagnetic wave.

This substrate 10 is a rectangle non-metal board, and this ground plane 20 is for being printed in the rectangle printed layers on these substrate 10 surfaces.

This first antenna 30 is arranged on this substrate 10.This first antenna 30 comprises the first main body 301 that is U-shaped structure, and the separated by a distance setting parallel with this substrate 10 of the plane at these the first main body 301 places, and this first main body 301 is extended along two long limits and a minor face of this substrate 10.One first vertical portion 302 is extended vertically downward and is connected with this substrate 10 from an end of this first main body 301, and this first vertical portion 302 is the first load point 31 with the tie point of substrate 10.One second vertical portion 303 is extended vertically downward and is connected with this ground plane 20 from another end of this first main body 301, and this second vertical portion 303 is the first earth point 32 with the tie point of this ground plane 20.Wherein this first load point 31 lays respectively at this first earth point 32 two edges that this substrate 10 is adjacent.In the present embodiment, the total length of this first antenna 30 equals the electromagnetic wavelength that this antenna 100 is launched or received.

This second antenna 40 is arranged at the opening part of U-shaped first main body 301 of this first antenna 30, between first vertical portion 302 and the second vertical portion 303 of this first antenna 30.This second antenna 40 comprises the second main body 401 of the bending structure being made up of multiple end to end linking arms, and the separated by a distance setting parallel with this substrate 10 of the plane at these the second main body 401 places.One the 3rd vertical portion 402 is extended vertically downward and is connected with this substrate 10 from an end of this second main body 401, and the 3rd vertical portion 402 is the second load point 41 with the tie point of this substrate 10.One the 4th vertical portion 403 is extended vertically downward and is connected with this ground plane 20 from another end of this second main body 401, and the 4th vertical portion 403 is the second earth point 42 with the tie point of ground plane 20.Wherein, this second earth point 42 is adjacent with the first load point 31 and be positioned at the same edge of substrate 10, and this second load point 41 is adjacent with the first earth point 32 and be positioned at the same edge of substrate 10.In the present embodiment, the length of this second antenna 40 equal that this antenna 100 is launched or the electromagnetic wavelength that receives 1/2nd.

In the present embodiment, the length of this substrate 10 is 50 millimeters, and width is 20 millimeters, and the development length of the second main body 401 of this second antenna 40 is 8 millimeters.

This isolation channel 50 is arranged between this first antenna 30 and this second antenna 40, is specially the list structure of the straight line between the first load point 31 and the second earth point 42.This isolation channel 50 extends along the Width of the opening of this first main body 301.In the present embodiment, the length of this isolation channel 50 is that this antenna 100 is launched or quarter-wave or 1/8th wavelength of the electromagnetic wavelength that receives.This isolation channel 50 can increase the isolation between this first antenna 30 and the second antenna 40, to avoid the first antenna 30 that the situation of the wireless signal phase mutual interference of transmitting-receiving occurs because distance is too near with the second antenna 40, and then improves the communication quality of antenna 100.

The present invention, by this first antenna 30 and the second antenna 40 are made into stereo structure rugosity structure, has saved space, and by isolation channel is set between antenna, prevents the interference between antenna, thereby has improved the communication quality of antenna.

Fig. 2 is isolation and the return loss resolution chart of the first antenna 30 and the second antenna 40 in antenna 100 in the present invention, wherein, L1 is the return loss of the first antenna 30, and L2 is the return loss of the second antenna 40, and L3 is the isolation between the first antenna 30 and the second antenna 40.As shown in Figure 2, frequency is in the scope of 2.5-2.7GHz, and the isolation between the return loss of the first antenna 30 and the second antenna 40 and the first antenna 30 and the second antenna 40 is all lower than-6dB.Visible, under the prerequisite of the pcb board of finite size, this antenna has higher communication quality.

Claims

1. an antenna, comprises substrate, is printed in ground plane, the first antenna and the second antenna on substrate, it is characterized in that:

This first antenna comprises the first main body, one first vertical portion is extended vertically downward and is connected with this substrate from an end of this first main body, the tie point of this first vertical portion and substrate is the first load point, one second vertical portion is extended vertically downward and is connected with this ground plane from another end of this first main body, and the tie point of this second vertical portion and this ground plane is the first earth point;

This second antenna is arranged between this first vertical portion and this second vertical portion, this second antenna comprises the second main body of the bending structure being made up of multiple end to end linking arms, one the 3rd vertical portion is extended vertically downward and is connected with this substrate from an end of this second main body, the tie point of the 3rd vertical portion and this substrate is the second load point, one the 4th vertical portion is extended vertically downward and is connected with this ground plane from another end of this second main body, and the tie point of the 4th vertical portion and ground plane is the second earth point;

This antenna also comprises an isolation channel, and this isolation channel is arranged between this first antenna and this second antenna, and this isolation channel is the list structure that is located at this ground plane.

2. antenna as claimed in claim 1, is characterized in that, the non-metal board that the substrate of this antenna is rectangle, and this first antenna is U-shaped structure, and extends along two long limits and a minor face of this substrate.

3. antenna as claimed in claim 2, is characterized in that, the length of this first antenna equals the electromagnetic wavelength that this antenna transmission receives.

4. antenna as claimed in claim 1, is characterized in that, the length of this second antenna equals 1/2nd of electromagnetic wavelength that this antenna transmission receives.

5. antenna as claimed in claim 1, is characterized in that, this first load point and this first earth point lay respectively at two edges that this substrate is adjacent.

6. antenna as claimed in claim 5, is characterized in that, this second earth point is adjacent with the first load point and be positioned at the same edge of substrate, and this second load point is adjacent with the first earth point and be positioned at the same edge of substrate.

7. antenna as claimed in claim 1, is characterized in that, this isolation channel extends along the A/F direction of this first main body, and the length of this isolation channel equals 1/4th of electromagnetic wavelength that this antenna transmission receives.

8. antenna as claimed in claim 1, is characterized in that, this isolation channel extends along the A/F direction of this first main body, and the length of this isolation channel equals 1/8th of electromagnetic wavelength that this antenna transmission receives.

9. antenna as claimed in claim 1, is characterized in that, the length of this substrate is 50 millimeters, and width is 20 millimeters, and the development length of the second main body of this second antenna is 8 millimeters.