CN1581579A - Integrated Multi-Band Antenna for Wireless Electronic Devices - Google Patents

Abstract

An integrated multi-band antenna for a wireless electronic device, disposed in the wireless electronic device, comprising: a grounding metal sheet, a connecting metal sheet, a first radiation metal sheet and a second radiation metal sheet. The grounding metal sheet has at least one fixing part for fixing the integrated multi-frequency antenna on the wireless electronic device. The connecting metal piece is connected to the grounding metal piece and extends from the middle part of the grounding metal piece. The first radiating metal sheet and the second radiating metal sheet are connected to the connecting metal sheet, extend along the first direction and the second direction respectively, and are spaced from the grounding metal sheet by a distance so as to generate a first resonance mode and a second resonance mode respectively. The grounding metal sheet can provide grounding function independently without being connected with the grounding end of the wireless electronic device, so that the integrated antenna has better elasticity in installation, can also keep stable electrical characteristics, can be operated in multiple frequencies, and has high radiation efficiency and stable characteristics.

Description

Integrated Multi-Band Antenna for Wireless Electronic Devices

【Technical field】

The present invention relates to a multi-frequency antenna, and more particularly, to an integrated multi-frequency antenna for a wireless electronic device.

【Background technique】

With the vigorous development of wireless communication technology, various multi-frequency communication products have sprung up, and therefore wireless communication products have gradually become a part of human life. Almost all new products will have the function of wireless transmission to meet The needs of the public, and notebook computers often require data transmission, wireless transmission can simplify many of its wiring and setting troubles, and in order to achieve the purpose of wireless transmission, the configuration of the antenna becomes necessary. For a notebook computer with wireless transmission function to be widely accepted and affirmed by the market, the appearance, size and performance of the product are very important, so it needs a good antenna design and configuration s position.

Antenna configurations currently used in notebook computers, such as disclosed in US Pat. No. 6,339,400B1, place one or more antennas 11 , 12 around a screen 10 of a notebook computer 1 , as shown in FIG. 1 . However, since the ground terminals of these antennas 11 and 12 must be connected to the ground of the screen or its frame, the commonly used antenna configuration design has limited installation positions and cannot be flexibly adjusted.

Therefore, it is necessary to provide an innovative and progressive integrated multi-band antenna for wireless electronic devices to solve the above problems.

【Content of invention】

The object of the present invention is to provide an integrated multi-frequency antenna for a wireless electronic device. The integrated multi-frequency antenna is arranged in the wireless electronic device. The integrated multi-frequency antenna includes: a grounding metal sheet, a connecting metal sheet, a first radiating metal sheet and a second radiating metal sheet. The ground metal sheet has at least one fixing portion for fixing the integrated multi-frequency antenna to the wireless electronic device. The connection metal piece is connected to the ground metal piece and extends from the middle part of the ground metal piece. The first radiating metal piece is connected to the connecting metal piece, extends along a first direction and is separated from the grounding metal piece by a distance for generating a first resonant mode. The second radiating metal piece is connected to the connecting metal piece, and extends along a second direction with a distance from the grounding metal piece for generating a second resonant mode.

The integrated antenna of the present invention is arranged in the wireless electronic device, and the grounding metal sheet of the antenna can provide grounding function alone, and does not need to be connected with the ground terminal of the wireless electronic device, so the installation of the integrated antenna of the present invention It can have better elasticity, and can also maintain stable electrical characteristics.

The integrated antenna of the present invention can operate at multiple frequencies, and has high radiation efficiency and stable characteristics. The integrated antenna of the present invention also has an auxiliary grounding metal sheet, which uses the bendable and foldable characteristics of the auxiliary grounding metal sheet to save space and meet the needs of the customer organization and provide better grounding effect and radiation effect. The integrated antenna of the present invention also has an auxiliary radiation metal sheet, which can adjust the application frequency and enhance its radiation effect.

【Description of drawings】

Figure 1 is a schematic diagram of commonly used antennas arranged around the screen of a laptop computer;

Fig. 2A is the schematic diagram that the antenna of the present invention is arranged on the screen housing frame of the notebook computer;

2B is a partial enlarged schematic view of the antenna of the present invention disposed on the frame of the notebook computer screen;

3 is a schematic structural diagram of a first embodiment of the antenna of the present invention;

4 is a schematic structural diagram of a second embodiment of the antenna of the present invention;

5 is a schematic structural diagram of a third embodiment of the antenna of the present invention;

6 is a structural perspective view of a fourth embodiment of the antenna of the present invention;

FIG. 7 is a voltage standing wave ratio diagram measured by the integrated multi-frequency antenna according to the first embodiment of the present invention;

8A is a radiation pattern diagram measured at 2.4 GHz according to the first embodiment of the integrated multi-frequency antenna of the present invention; and

FIG. 8B is a radiation pattern diagram measured at 5 GHz by the integrated multi-frequency antenna according to the first embodiment of the present invention.

Description of attached symbols

1: Laptop

10: screen

11, 12: Antenna

2: Laptop

21: screen

22: Screen enclosure frame

23: screw

24: coaxial wire

30: Antenna of the first embodiment

31: Ground metal sheet

32: Connect metal sheet

33: The first radiant metal sheet

34: The second radiating metal sheet

35: Feed point

36: Ground point

37, 38: through hole

40: Antenna of the second embodiment

41: Ground metal sheet

42: Connecting sheet metal

43: First Radiant Metal Sheet

44: Second Radiant Metal Sheet

50: Antenna of the third embodiment

51: Ground metal sheet

52: Auxiliary grounding metal sheet

60: Antenna of the fourth embodiment

61: Ground metal sheet

62: Connecting sheet metal

63: First Radiant Metal Sheet

64: Second Radiant Metal Sheet

65: Feed point

66: Ground point

67: Auxiliary radiation metal sheet

68: coaxial wire

【Detailed ways】

Please refer to FIGS. 2A and 2B , which describe the configuration structure of an embodiment of an integrated multi-frequency antenna applied to a notebook computer 2 according to the present invention. The present invention can be applied to various wireless electronic devices including notebook computers, but is not limited to notebook computers, general electronic products such as personal digital assistants (PDAs) can use the integrated multi-frequency antenna of the present invention to achieve wireless communication the goal of. The notebook computer 2 has a screen 21 and a screen housing frame 22. The integrated multi-frequency antenna 30 of the present invention is arranged on the screen housing frame 22 of the notebook computer 2, and is connected to the integrated antenna 30 with a coaxial wire 24. The control circuit of the notebook computer 2 uses the antenna 30 for data transmission.

Referring to FIG. 3 , the integrated multi-frequency antenna 30 according to the first embodiment of the present invention includes: a grounding metal piece 31 , a connecting metal piece 32 , a first radiating metal piece 33 and a second radiating metal piece 34 . The ground metal sheet 31 has at least one fixing portion for fixing the integrated multi-frequency antenna 30 to the screen housing frame 22 . In this embodiment, the fixing part is two through holes 37, 38, which pass through the ground metal sheet 31, and are used for two screws 23 to fix the integrated multi-frequency antenna 30 to the screen housing frame 22 of the notebook computer 2 (such as Figure 2B).

The connecting metal piece 32 of the integrated multi-frequency antenna 30 is connected to the grounding metal piece 31 and extends from the middle portion of the grounding metal piece 31 . The connecting metal piece and the grounding metal piece 31 are approximately parallel to each other.

The first radiating metal piece 33 is connected to the connecting metal piece 32 , extends along a first direction F1 and is approximately parallel to the grounding metal piece 31 with a distance therebetween. The first radiating metal sheet 33 is used to generate a first resonant mode. The second radiating metal piece 34 is connected to the connecting metal piece 32 , extends along a second direction F2 and is approximately parallel to the grounding metal piece 31 with a distance therebetween. The second radiating metal sheet 34 is used to generate a second resonance mode. The first direction F1 is opposite to the second direction F2.

In the first embodiment of the present invention, the length of the first radiating metal piece 33 is shorter than the length of the second radiating metal piece 34 , so the frequency of the second resonant mode is lower than the frequency of the first resonant mode. Therefore, the integrated multi-frequency antenna 30 of the present invention can be used in multi-frequency wireless communication applications of at least one high frequency and at least one low frequency.

The integrated multi-frequency antenna 30 further includes a feed-in point 35 and a ground point 36, the feed-in point 35 is arranged on the connecting metal sheet 32 for connecting with a signal end of the coaxial wire 24 (as shown in FIG. 2B As shown), the grounding point 35 is disposed on the grounding metal sheet 31 for connecting with a grounding end of the coaxial wire 24 (as shown in FIG. 2B ).

Referring to FIG. 4 , the integrated multi-frequency antenna 40 according to the second embodiment of the present invention includes: a grounding metal piece 41 , a connecting metal piece 42 , a first radiating metal piece 43 and a second radiating metal piece 44 . The difference between the integrated multi-frequency antenna 40 of the second embodiment of the present invention and the integrated multi-frequency antenna 30 of the first embodiment is that the length of the first radiating metal sheet 43 is greater than the length of the second radiating metal sheet 44, so The frequency of the second resonance mode is higher than the frequency of the first resonance mode. The frequency of the second resonant mode is about 5 GHz, and the frequency of the first resonant mode is about 2.4 GHz.

Referring to FIG. 5 , it shows the integrated multi-frequency antenna 50 according to the third embodiment of the present invention. The difference between the integrated multi-frequency antenna 50 of the third embodiment of the present invention and the integrated multi-frequency antenna 30 of the first embodiment is that an auxiliary ground metal sheet 52 is added under the ground metal sheet 51 . The auxiliary grounding metal sheet 52 can be made of aluminum foil, copper foil or other metal materials, and can also be made of aluminum foil stickers or copper foil stickers. It can be folded and placed to avoid taking up too much space and meet the needs of customer organizations. . The auxiliary grounding metal sheet 52 can provide better grounding effect and radiation effect.

Referring to FIG. 6 , it shows the integrated multi-frequency antenna 60 according to the fourth embodiment of the present invention. The integrated multi-frequency antenna 60 of the third embodiment includes: a ground metal piece 61 , a connecting metal piece 62 , a first radiating metal piece 63 and a second radiating metal piece 64 . The integrated multi-frequency antenna 60 further includes a feed-in point 65 and a ground point 66 , the feed-in point 65 is disposed on the connecting metal plate 62 for connecting with a signal end of a coaxial wire 68 . The ground point 66 is disposed on the ground metal plate 61 for connecting with a ground terminal of the coaxial wire 68 .

Since the coaxial wire 68 passes through the vicinity of the first radiating metal sheet 63 of the integrated multi-frequency antenna 60, in order to prevent the coaxial wire 68 from adversely affecting the impedance of the first radiating metal sheet 63, the length 63 can be shortened. The length to avoid the coaxial wire 68. For this purpose, the integrated multi-frequency antenna 60 further includes an auxiliary radiating metal sheet 67 extending from the first radiating metal sheet 63 along a third direction F3, the third direction F3 is perpendicular to the first direction F1, and can be The application frequency is adjusted and its radiation effect is enhanced, and the impact of the coaxial wire 68 on the impedance can be compensated.

Referring to FIG. 7 , according to the voltage standing wave ratio (VSWR) measured by the integrated multi-frequency antenna 30 according to the first embodiment of the present invention, it shows that the integrated multi-frequency antenna 30 of the present invention can be applied to multiple frequencies of 2.4GHz and 5GHz. frequency operation. Referring again to FIG. 8A and FIG. 8B , according to the first embodiment of the present invention, the integrated multi-frequency antenna 30 measures the radiation pattern (RadiationPattern) at 2.4 GHz and 5 GHz respectively, which shows the integrated multi-frequency antenna 30 of the present invention. Applied to 2.4GHz and 5GHz, the radiation effect is quite good

The integrated antenna of the present invention is arranged in the wireless electronic device, and the grounding metal sheet of the antenna can provide grounding function alone without being connected with the grounding terminal of the wireless electronic device. Therefore, the integrated antenna of the present invention is not limited to be connected to the ground terminal, and can have better installation flexibility. In addition, the auxiliary grounding metal sheet can also be used to provide a better grounding effect and maintain stable electrical characteristics.

The integrated antenna of the present invention utilizes the first radiating metal sheet and the second radiating metal sheet to generate the first resonant mode and the second resonant mode, so that the integrated antenna of the present invention can operate at multiple frequencies, and has high radiation efficiency and characteristic Stablize. Moreover, the integrated antenna of the present invention further has an auxiliary grounding metal sheet, which can save space and provide better grounding effect and radiation effect by utilizing the bendable and foldable characteristics of the auxiliary grounding metal sheet. The integrated antenna of the present invention also uses the auxiliary radiation metal sheet to adjust the application frequency and enhance its radiation effect, and can compensate the influence of the coaxial wire on the overall impedance, so that the overall characteristics of the integrated antenna of the present invention are stable.

However, the above-mentioned embodiments are only for illustrating the principles and effects of the present invention, rather than limiting the present invention. Therefore, those skilled in the art can make modifications and changes to the above-mentioned embodiments without departing from the spirit of the present invention. The scope of rights of the present invention should be covered by the scope of claims described later.

Claims (14)

1. integrated multifrequency antenna that is used for wireless electron device, this integrated multifrequency antenna is arranged in this wireless electron device, and this integrated multifrequency antenna comprises:

Grounded metal sheet has at least one standing part, in order to fix this integrated multifrequency antenna in this wireless electron device;

Connect sheet metal, be connected to this grounded metal sheet, and extend by the mid portion of this grounded metal sheet;

First radiation sheet metal is connected to this connection sheet metal, and along a first direction extend and with this grounded metal sheet distance at interval, in order to produce one first resonance mode; And

Second radiation sheet metal is connected to this connection sheet metal, and along a second direction extend and with this grounded metal sheet distance at interval, in order to produce one second resonance mode.

2. integrated multifrequency antenna as claimed in claim 1, wherein this first direction is opposite with the direction of this second direction.

3. integrated multifrequency antenna as claimed in claim 1, wherein the length of this first radiation sheet metal is greater than the length of this second radiation sheet metal, and the frequency of this second resonance mode is higher than the frequency of this first resonance mode.

4. integrated multifrequency antenna as claimed in claim 1, wherein the length of this first radiation sheet metal is less than the length of this second radiation sheet metal, and the frequency of this second resonance mode is lower than the frequency of this first resonance mode.

5. integrated multifrequency antenna as claimed in claim 1, other comprises an auxiliary earth sheet metal, is connected to this grounded metal sheet, in order to suitable ground connection to be provided.

6. integrated multifrequency antenna as claimed in claim 5, wherein this auxiliary earth sheet metal is that bent metal material is made.

7. integrated multifrequency antenna as claimed in claim 6, wherein this auxiliary earth sheet metal is an aluminium foil paster.

8. integrated multifrequency antenna as claimed in claim 6, wherein this auxiliary earth sheet metal is a Copper Foil paster.

9. integrated multifrequency antenna as claimed in claim 1, other comprises a load point and an earth point, and this load point is arranged at this connection sheet metal, in order to be connected with a signal end of spindle guide line together, this earth point is arranged at this grounded metal sheet, in order to be connected with an earth terminal of this concentric conductor.

10. as the integrated multifrequency antenna of the 9th of claim, other comprises an auxiliary radiation sheet metal, and this first radiation sheet metal extends along a third direction certainly, and this third direction is vertical with this first direction.

11. integrated multifrequency antenna as claimed in claim 1, wherein this first radiation sheet metal and this grounded metal sheet are set in parallel.

12. integrated multifrequency antenna as claimed in claim 1, wherein this second radiation sheet metal and this grounded metal sheet are set in parallel.

13. integrated multifrequency antenna as claimed in claim 1, wherein this wireless electron device is a notebook computer.

14. integrated multifrequency antenna as claimed in claim 1, wherein this wireless electron device is a personal digital assistant.

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