CN2874800Y

CN2874800Y - Multifrequency antenna

Info

Publication number: CN2874800Y
Application number: CNU2005201404422U
Authority: CN
Inventors: 王舒嬿; 洪振达; 戴隆盛
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2005-12-27
Filing date: 2005-12-27
Publication date: 2007-02-28
Anticipated expiration: 2015-12-27

Abstract

The utility model discloses a multi-frequency antenna applied to electronic equipment, such as lap-top computers, etc. The utility model comprises a primary antenna and a secondary antenna, as well as a grounding part shared by both antennas. The main bodies of oadiating part from the primary antenna and the secondary antenna are in the different plane.

Description

Multifrequency antenna

[technical field]

The utility model is about a kind of multifrequency antenna, especially refers to a kind of multifrequency antenna that is used for electronic equipments such as notebook computer.

[background technology]

Along with the high speed development of mobile communication, people more and more wish to be equipped with a notebook computer or other portable terminal device just can insert Internet whenever and wherever possible.Satisfied people's this demand to a certain extent based on the wireless-access mode of GPRS (General Packer RadioService, GPRS) and WLAN (Wireless Local Area Network, WLAN (wireless local area network)).People cooperate portable terminal devices such as notebook computer by selecting the different radio network interface card, insert Internet whenever and wherever possible.

At present, wireless local area is mostly based on bluetooth (Bluetooth) technical standard or IEEE802.11 series standard.The working band of antenna falls within 2.4GHz in the Bluetooth technology standard, and the working band of antenna falls within 2.4GHz and 5GHz respectively in the IEEE802.11 series technique standard.And the GPRS working band falls within 900MHz, 1800MHz and 1900MHz, and therefore, the antenna in the notebook computer is the multifrequency antenna that is applied to above-mentioned frequency band mostly at present.

(Planar Inverted-F Antenna PIFA) is a kind of small size antenna that is usually used in mobile communication terminal to planar inverted " F " type antenna.Its characteristics are that size is little, and are in light weight, can effectively reduce occupation space and manufacturing cost, and impedance matching is good, is easy to realize double frequency or multifrequency.It another very important characteristic is exactly that it has horizontal polarization and perpendicular polarization concurrently, is applicable to the place that electromagnetic environment is comparatively complicated.The application of WLAN (IEEE 802.11) is confined to the fastest transmission rate 54Mbps at present.Yet this speed is far away from cable network.In view of this, 802.11n working group thereby generation.The solution that is wherein the most generally proposed hardware aspect is the use of MIMO (Multiple-input-multiple-output) antenna, remedies the deficiency of script single antenna with the transmitting-receiving of many antennas.Increase but under the trend that size is dwindled, utilize the structure that two antennas are combined to reach the purpose that improves transmission speed because be equipped with at existing notebook computer.Correlation technique sees also shown in Figure 1, this multifrequency antenna 1 ' comprises first antenna 10 ' and second antenna 20 ' that is used for WLAN (wireless local area network), the free end of the low frequency radiation portion of second antenna 20 ' has a bending structure 4 ', make the win antenna 10 ' and second antenna 20 ' low frequency radiation portion free end not at grade, thereby reduced influencing each other of two antennas.But because the volume of notebook computer is more and more littler, antenna volume is also more and more littler, under the littler situation of antenna volume, and the also corresponding shortening of the distance between two antennas, it influences each other and will strengthen, and this design just can not reach requirement.

[utility model content]

The purpose of this utility model provides a kind of multifrequency antenna, can reduce to take the space of device interior, and interacting between antenna is little.

For achieving the above object, the utility model adopts following technical scheme: a kind of multifrequency antenna, be used for notebook computer or other portable terminal device, it comprises first antenna and second antenna, and the shared grounding parts of first antenna, second antenna, the Department of Radiation of each antenna all has the part and the part that works in high band of the low-frequency range of working in, the main part of the Department of Radiation that two antennas have is arranged at Different Plane, and the first aerial radiation portion work in low-frequency range part and the second aerial radiation portion to work in the high band part adjacent.

Compared with prior art, the utility model multifrequency antenna has the following advantages: because the low frequency radiation portion of the high-frequency radiation part of first antenna and second antenna is adjacent, and the part of the Department of Radiation of the Department of Radiation of first antenna and second antenna is in Different Plane, makes first antenna of multifrequency antenna and influencing each other of second antenna reduce.

[description of drawings]

Fig. 1 is the stereogram of correlation technique multifrequency antenna.

Fig. 2 is the stereogram of the utility model multifrequency antenna.

Fig. 3 is the stereogram of another angle of the utility model multifrequency antenna.

Fig. 4 is the stereogram of an angle again of the utility model multifrequency antenna.

Fig. 5 is the stereogram of the another angle of the utility model multifrequency antenna.

[embodiment]

Fig. 2 is extremely shown in Figure 5 to be the multifrequency antenna 1 of better embodiment of the present utility model, and this multifrequency antenna 1 is formed by a sheet metal punching press.In the present embodiment, multifrequency antenna 1 comprises the grounding parts 4 that first antenna, 2, the second antennas 3 and two antennas are shared.

First antenna 2 comprises Department of Radiation 2 ', first grounding parts 200, connects first connecting portion 100 and the projection 7 of the Department of Radiation 2 ' and first grounding parts 200.Department of Radiation 2 ' comprises first Department of Radiation 10, second Department of Radiation 20, the 3rd Department of Radiation 30, and wherein first Department of Radiation 10 and second Department of Radiation 20 have a common radiation arm 1020.First Department of Radiation 10 comprises that first radiation arm 11 and common radiation arm 1020, the second Departments of Radiation 20 comprise " Z " shape radiation arm 20 ' and common radiation arm 1020." Z " shape radiation arm 20 ' is " Z " font, comprises first side arm 21, second side arm 22 and the 3rd side arm 23.First side arm 21 and first radiation arm 11 electrically connect forms first metal longitudinal long-armed 70, second side arm 22 extends to grounding parts 4 directions perpendicular to first side arm, 21 directions from first side arm, 21 edges, along extending perpendicular to second side arm, 22 directions, the 3rd side arm 23 is parallel to first side arm 21 to the 3rd side arm 23 and both are positioned at the both sides of second side arm 22 from second side arm 22.The 3rd Department of Radiation 30 forms the second lengthwise metal arm 80 from common radiation arm 1020 vertical extent and with first connecting portion 100.First radiation arm 11, common radiation arm 1020 and the 3rd Department of Radiation 30 are " ㄈ " shape.First grounding parts 200 electrically connects from first connecting portion, 100 vertical extent and grounding parts 4.The Department of Radiation 2 ' of first antenna 2, first connecting portion 100 and first grounding parts 200 are positioned at same plane.In the present embodiment, projection 7 is to be used to connect feeder line (not shown), it is from first connecting portion 100 and the 3rd Department of Radiation 30 junction vertical extent, its free end bearing of trend is parallel to plane, grounding parts 4 place, and the other parts of itself and described multifrequency antenna 1 are to be bent to form after same metal lamellar body upper punch is pressed.Therefore the length that is limited to each Department of Radiation in the present embodiment, first Department of Radiation 10 is used for emission or receives higher frequency signals, second Department of Radiation 20 is used for emission or receives than low frequency signal, and the 3rd Department of Radiation 30 is used to increase the frequency range of first Department of Radiation 10 (being high-frequency radiation part).Among other embodiment, the position of projection 7 can change, and the length of Department of Radiation also changes thereupon, thereby changes radiation frequency, and the effect of each Department of Radiation also may change thereupon.

Second antenna 3 comprises Department of Radiation 3 ', second grounding parts 400, connects second connecting portion 300 and the projection 8 of the Department of Radiation 3 ' and second grounding parts 400.Department of Radiation 3 ' comprises the 4th Department of Radiation 40, the 5th Department of Radiation 50 and the 6th Department of Radiation 60.The 4th Department of Radiation 40 1 ends and the 6th Department of Radiation 60 electrically connect, and the other end is curved.The 5th Department of Radiation 50 is one " L " shape sheet metal, comprises first sheet metal 51 and second sheet metal 52.First sheet metal 51 and the 6th Department of Radiation 60 electrically connect, and second sheet metal 52 extends to grounding parts 4 directions along vertical first sheet metal, 51 directions from first sheet metal 51.The 6th Department of Radiation 60 comprises second radiation arm 61, the 3rd radiation arm 62, the 4th radiation arm 63, second radiation arm 61 and second connecting portion 300 form the 3rd lengthwise metal arm 90, the 3rd radiation arm 62 is from second radiation arm, 61 vertical extent, and the 4th radiation arm 63 electrically connects the 4th Departments of Radiation 40 and the 5th Department of Radiation 50 and from the 3rd radiation arm 62 vertical extent.Second grounding parts 400 is L-shaped, comprises a ground strip 401 and a bonding jumper 402, and this bonding jumper 402 can be strengthened the intensity of antenna structure.The ground strip 401 of the 3rd lengthwise metal arm 90, second grounding parts 400 and bonding jumper 402 forms " Z " fonts, and second radiation arm 61 and second connecting portion 300 are positioned at the 3rd radiation arm 62 both sides.In the present embodiment, projection 8 is to be used to connect another feeder line (not shown), along extending to grounding parts 4 perpendicular to the 4th radiation arm 63 directions, its other parts with multifrequency antenna 1 are to be bent to form after same metal lamellar body upper punch pressure from the 4th radiation arm 63 junctions of the 4th Department of Radiation 40, the 5th Department of Radiation 50 and the 6th Department of Radiation 60 for it.Therefore the length that is limited to each Department of Radiation in the present embodiment, the 4th Department of Radiation 40 is used for emission or receives higher frequency signals, the 5th Department of Radiation 50 is used for emission or receives than low frequency signal, and the 6th Department of Radiation 60 is used to increase the frequency range of the 4th Department of Radiation 40 (being high-frequency radiation part).Among other embodiment, the position of projection 8 can change, and the length of Department of Radiation also changes thereupon, thereby changes radiation frequency, and the effect of each Department of Radiation also may change thereupon.

First Department of Radiation 10 of first antenna 2, second Department of Radiation 20 are the main part of first antenna 2, and the 4th radiation arm 63 of the 4th Department of Radiation 40, the 5th Department of Radiation 50 and the 6th Department of Radiation 60 of second antenna 3 is the main part of second antenna 3.

Have the

installation portion

5,6 that lays respectively at its two ends on the grounding parts 4,

installation portion

5,6 is positioned at same plane.

Second radiation arm 61 and the 3rd radiation arm 62 of second grounding parts 400, second connecting portion 300, the 6th Department of Radiation 60 are positioned at same plane, make that this plane is the first plane a.First sheet metal 51 of the 4th Department of Radiation 40, the 5th Department of Radiation 50 and the 4th radiation arm 63 of the 6th Department of Radiation 60 are positioned at same plane, make that this plane is the second plane b.Then the first plane a is perpendicular to the second plane b.First antenna 2 is positioned at the first plane a in this embodiment.Projection 8 place plane parallel are in the first plane a, and projection 7 place plane parallel are in the second plane b.Grounding parts 4 is a metallic plate, and is connected with second grounding parts 400 with first grounding parts 200, and its place plane parallel is in the second plane b.

The part that first antenna 2 is adjacent with second antenna 3 in the present embodiment is a low frequency, a high frequency, and the difference of utilizing two Frequency points is to reduce the situation that antenna is interfered mutually.Simultaneously, present embodiment is arranged at Different Plane with the 4th radiation arm 63 of the 4th Department of Radiation 40 of the Department of Radiation 2 ' of first antenna 2 and second antenna, the 5th Department of Radiation 50, the 6th Department of Radiation 60, thereby has reduced the phase mutual interference of two antennas in narrow space.

Claims

1. multifrequency antenna, be used for notebook computer or other portable terminal device, it comprises first antenna and second antenna, and the shared grounding parts of first antenna, second antenna, the Department of Radiation of each antenna all has the part and the part that works in high band of the low-frequency range of working in, it is characterized in that: the main part of the Department of Radiation that two antennas have is arranged at Different Plane, and the first aerial radiation portion work in low-frequency range part and the second aerial radiation portion to work in the high band part adjacent.

2. multifrequency antenna as claimed in claim 1 is characterized in that: the Department of Radiation of described first antenna comprises first Department of Radiation that works in described high band, work in that described low-frequency range has second Department of Radiation of a common radiation arm with first Department of Radiation and be connected with described common Department of Radiation one end and expand the 3rd Department of Radiation of described high band.

3. multifrequency antenna as claimed in claim 2, it is characterized in that: described second Department of Radiation has a radiation arm that is " Z " shape substantially, it comprise first side arm that extends from first Department of Radiation and described common radiation arm junction, from first side arm along second side arm that extends to the grounding parts direction perpendicular to the first side arm direction and from second side arm along extending perpendicular to the second side arm direction and laying respectively at the 3rd side arm of the second side arm both sides with first side arm, described the 3rd side arm free end is the radiation end of second Department of Radiation.

4. multifrequency antenna as claimed in claim 3, it is characterized in that: wherein said first antenna further comprises first grounding parts that is connected with described shared grounding parts and is connected described Department of Radiation and first connecting portion of first grounding parts, and the described Department of Radiation of first antenna, first grounding parts and first connecting portion are in same plane.

5. multifrequency antenna as claimed in claim 4, it is characterized in that: the junction of described the 3rd Department of Radiation and first connecting portion vertically extends a projection, the other parts of described projection and described multifrequency antenna are to bend to roll over from same metal lamellar body upper punch to form, be used to connect feeder line, its free-ended bearing of trend is consistent with plane, grounding parts place.

6. multifrequency antenna as claimed in claim 2 is characterized in that: described second antenna further comprises second grounding parts that is connected with described shared grounding portion and is connected Department of Radiation and second connecting portion of second grounding parts.

7. multifrequency antenna as claimed in claim 6 is characterized in that: the described Department of Radiation of described second antenna comprises the 4th Department of Radiation that works in described high band, the 5th Department of Radiation that works in the L-shaped sheet metal of low-frequency range and expands the 6th Department of Radiation of high band.

8. multifrequency antenna as claimed in claim 7 is characterized in that: second Department of Radiation of described first antenna is adjacent with the 4th Department of Radiation of second antenna.

9. multifrequency antenna as claimed in claim 7 is characterized in that: the plane, fourth, fifth Department of Radiation place of first and second plane, Department of Radiation place of described first antenna and second antenna is orthogonal.。

10. multifrequency antenna as claimed in claim 1 is characterized in that: described grounding parts has two installation portions that lay respectively at its two ends, and described two installation positions are in same plane.