CN201185228Y - antenna - Google Patents

Abstract

The utility model discloses an antenna, comprising a ground plane, a main antenna extending from the ground plane, and a parasitic element, wherein the parasitic element is arranged around the main antenna and coupled with the main antenna. The utility model antenna can not only receive and transmit ultra-wideband signals but also receive and transmit Bluetooth signals by adding a parasitic element that can couple with the main antenna, thereby eliminating the need for a separate Bluetooth antenna, simplifying the antenna structure, and reducing the space occupied by the antenna in portable terminals such as notebook computers.

Description

antenna

technical field

The utility model relates to an antenna, in particular to an antenna applied to portable terminals such as notebook computers.

Background technique

In order to realize wireless transmission between a portable terminal such as a notebook computer and the outside, an antenna for transmitting and receiving Bluetooth signals and an antenna for transmitting and receiving ultra-wideband signals are generally provided inside the portable terminal such as a notebook computer. However, at present, portable terminals such as notebook computers tend to be miniaturized. The use of two antennas makes the structure more complicated, which will increase the space occupied by portable terminals such as notebook computers, which is not in line with the trend of miniaturization.

Utility model content

The purpose of this utility model is to provide an antenna for the defects of the above-mentioned prior art, which has a simple structure and can reduce the space required by the antenna in portable terminals such as notebook computers.

In order to achieve the above purpose, the antenna provided by the utility model includes a ground plane, a main antenna extending from the ground plane and a parasitic element, and the parasitic element is arranged around the main antenna and coupled with the main antenna.

As mentioned above, by adding a parasitic element that can couple with the main antenna, the antenna of the utility model can not only send and receive ultra-wideband signals, but also send and receive Bluetooth signals, thereby eliminating the need for a separate Bluetooth antenna, simplifying the antenna structure, and reducing The space it occupies in a portable terminal such as a notebook computer.

Description of drawings

Fig. 1 is a perspective view of the antenna of the present invention.

Figure 2 is a voltage standing wave ratio (Voltage Standing WaveRatio, VSWR) test chart of the antenna shown in Figure 1.

The reference signs in the figure are explained as follows:

Antenna 100 Ground plane 10

First Edge 11 Main Antenna 20

Connecting part 21 First radiation part 22

base 221 first extension 222

Second extension 223 Second radiation 23

Feed-in part 24 Feed-in point 241

The third radiation part 25 parasitic element 30

Vertical Department 31 First Parasitic Department 40

Second Parasitic Division 41

Detailed ways

In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, specific embodiments are exemplified below and described in detail with accompanying drawings.

Please refer to FIG. 1 , the antenna 100 of the present invention is made of metal material and includes a ground plane 10 , a main antenna 20 and a parasitic element 30 .

The ground plane 10 is in the shape of a rectangular sheet and has a first edge 11 .

The main antenna 20 includes a connecting portion 21 , a first radiating portion 22 , a second radiating portion 23 , a feeding portion 24 and a third radiating portion 25 . The connecting portion 21 extends upward from the first edge 11 vertically to the ground plane 10 . The first radiating part 22 is formed by extending from the connecting part 21, including a first extending part 222 bent and extending from the end of the connecting part 21 perpendicular to the connecting part 21, and extending from the end of the first extending part 222 perpendicular to the first extending part. A base 221 extending from 222 and a second extension 223 extending from one end of the base 221 perpendicular to the base 221 and parallel to the first extension 222 . The base portion 221 , the first extension portion 222 and the second extension portion 223 are parallel to the ground plane 10 . The second radiating portion 23 is formed by extending from the inner side of the second extending portion 223 perpendicularly from the second extending portion 223 to the first extending portion 222 , and the second radiating portion 23 and the first radiating portion 22 are located in the same plane. The feed-in portion 24 extends downward from the end of the second extension portion 223 of the first radiating portion 22 perpendicular to the ground plane 10 , and a feed-in point 241 is disposed on the feed-in portion 24 . The third radiating portion 25 is formed by extending from the inner side of the feeding portion 24 vertically from the feeding portion 24 to the connecting portion 21 . The feeding part 24 and the third radiating part 25 are located in the same plane as the connecting part 21 .

The parasitic element 30 is a capacitive coupling element, which is arranged around the main antenna 20, and includes a vertical portion 31 extending upwards perpendicular to the first edge 11 of the ground plane 10, a first parasitic portion 32 bent and extended perpendicular to the vertical portion 31, and a vertical The second parasitic portion 33 extends from the first parasitic portion 32 . The first parasitic portion 32 is parallel to the second extension portion 223 of the first radiating portion 22 , and the second parasitic portion 33 is parallel to the base portion 221 of the first radiating portion 22 .

When the antenna 100 of the present invention is used for wireless communication, current is fed into the antenna 100 through the feeding point 241 . When the current flows to the first radiation part 22 through the feeding part 24, the antenna 100 can send and receive high-frequency signals in the range of 3-4 GHz; when the current flows to the second radiation part 23 through the feeding part 24, the antenna 100 can send and receive 4-4 GHz High-frequency signals in the range of 6GHz; and when the current flows from the feeding point 241 to the third radiation part 25, the antenna 100 can send and receive ultra-high-frequency signals in the range of 6-8GHz. The parasitic element 30 can transmit and receive signals in the range of 2.4-2.5 GHz through the coupling effect, and this frequency band is the communication frequency band of Bluetooth.

Please refer to Fig. 2, the utility model antenna 100 works respectively at 2.412GHz (as shown in the figure 1), 2.462GHz (as shown in the figure 2), 3GHz (as shown in the figure 3), 4GHz (as shown in the mark 4) , 5GHz (marker 5 in the figure), 6GHz (marker 6 in the figure) and 7GHz (marker 7 in the figure), the voltage standing wave ratios are 1.584, 1.544, 2.511, 2.303, 2.436, 2.228 and 1.653 respectively, It meets the design requirement that the VSWR is less than 2 or 3.

As mentioned above, by adding a parasitic element 30 that can couple with the main antenna 20 for transmitting and receiving ultra-wideband signals, the antenna 100 of the present invention can not only transmit and receive 3GHz-8GHz ultra-wideband signals, but also can transmit and receive 2.4GHz-2.5GHz Bluetooth signal, thus eliminating the need for a separate Bluetooth antenna, simplifying the antenna structure, and reducing the space it occupies in portable terminals such as notebook computers.

Claims (7)

1. antenna is characterized in that: comprise a ground plane and from the ground plane an extended main antenna and a parasitic antenna, parasitic antenna is coupled around the main antenna setting and with main antenna.

2. antenna according to claim 1, it is characterized in that: main antenna comprises connecting portion, first Department of Radiation, second Department of Radiation, feeding portion and the 3rd Department of Radiation, ground plane has first edge, connecting portion extends upward from first edge-perpendicular and forms, first Department of Radiation forms from the connecting portion extension, and second Department of Radiation forms from the extension of first Department of Radiation, and feeding portion forms from the extension of first Department of Radiation, feeding portion is provided with load point, and the 3rd Department of Radiation forms from the feeding portion extension.

3. antenna according to claim 2, it is characterized in that: first Department of Radiation comprises that vertical connecting portion bends first extension that extends from the end of connecting portion, the base portion that extends perpendicular to first extension from the end of first extension reaches from the vertical base portion of an end of base portion and be parallel to second extension that first extension extends, and base portion, first extension and second extension are parallel to ground plane.

4. antenna according to claim 3, it is characterized in that: parasitic antenna comprises the upwardly extending vertical portion, first edge on vertical junction ground, first Parasitica of vertical vertical portion bending extension and second Parasitica that vertical first Parasitica extends, first Parasitica is parallel to second extension of first Department of Radiation, and second Parasitica is parallel to the base portion of first Department of Radiation.

5. antenna according to claim 3 is characterized in that: second Department of Radiation extends to first extension from inboard vertical second extension of second extension of first Department of Radiation, and second Department of Radiation and first Department of Radiation are positioned at same plane.

6. antenna according to claim 3 is characterized in that: feeding portion for from the end vertical junction of second extension of first Department of Radiation face down and extend to form.

7. antenna according to claim 6 is characterized in that: the 3rd Department of Radiation forms for the inboard vertical feeding portion from feeding portion extends to connecting portion, and feeding portion, the 3rd Department of Radiation and connecting portion are in same plane.

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