CN101071898A

CN101071898A - Multifrequency antenna assembly

Info

Publication number: CN101071898A
Application number: CN 200610040424
Authority: CN
Inventors: 苏纹枫; 黄耀先
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: 2006-05-11
Filing date: 2006-05-11
Publication date: 2007-11-14
Anticipated expiration: 2026-05-11
Also published as: CN101071898B

Abstract

The invention discloses a multifrequency antenna module for notebook PC, comprising first antenna for WLAN and second antenna for WWAN, where the two antennas are mutually independent and separately installed inside the notebook computer, and each antenna comprises a radiating unit with high frequency radiating part and low frequency radiating part, and a grounded part to be mounted with the notebook PC, and the main body of the grounded part of the first antenna is approximately aligned with that of the second antenna, and the radiating units are located on the same sides of the main bodies of the grounded parts of the two antennas, and none of the low frequency radiating parts of the two antennas extend along a straight line.

Description

Multifrequency antenna assembly

[technical field]

The invention relates to a kind of multifrequency antenna assembly, especially refer to a kind of separate type multifrequency antenna assembly that electronic equipments such as notebook computer can satisfy WLAN and WWAN application demand that is used for.

[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 WLAN (Wireless Local AreaNetwork, WLAN (wireless local area network)).Yet the transmission range of WLAN is very little, has limited the wider wireless transmission of people.Wireless wide area network (WWAN) is the wireless network that a wide area covers, and its message transmission rate is probably at 30Kbps-50Kbps, and transmission range increases, and greatly degree has solved the requirement that antenna transmission is adjusted the distance.Therefore a notebook computer or other portable terminal devices can insert WWAN simultaneously and WLAN is pursuing one's goal of people.

At present, WLAN (wireless local area network) 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.The WWAN in the whole world mainly adopts two big technology-GSM and CDMA at present, and this two big technical standard working band falls within 900MHz and 1800MHz.

At present, much act on the notebook computer of WWAN and WLAN and the many using planars of other portable sets and fall " F " type antenna.(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.

Along with the volume of modern electronic product is more and more littler, the installing space of built-in antenna in the medium electronic equipment of notebook computer is more and more limited, and modern electronic product need dispose multiple antenna, to adapt to the transmission of carrying out data etc. at different network (WLAN and WWAN), therefore we integrate a plurality of antennas, to dwindle its volume.

In the prior art, be illustrated in figure 1 as a multifrequency antenna assembly 10, this multifrequency antenna assembly 10 comprises first antenna 11 that is applied to wireless wide area network (WWAN) and is used for second antenna 12 of wireless lan (wlan) and shared grounding parts 13 thereof.This multifrequency antenna assembly promptly is with WWAN antenna and WLAN aerial integration together, has effectively saved the space.But first antenna in this mode,

second antenna

11,12 are one-body molded, are unfavorable for the dismounting respectively of different antennas, if wherein a certain antenna goes wrong and needs to change, then entire antenna will be changed, thereby bring inconvenience and waste.

[summary of the invention]

The purpose of this invention is to provide a kind of multifrequency antenna assembly, it is formed by two multifrequency antenna assemblies that are applied to different network domains, and these two multifrequency antenna assemblies are mutually compound on the installation site, save the space, simultaneously, on the antenna entity structure, be separated convenient single dismounting.

For achieving the above object, the present invention adopts following technical scheme: a kind of multifrequency antenna assembly, be to be used for notebook computer, it comprises first antenna that is used for WLAN (wireless local area network) and second antenna that is used for wireless wide area network, first antenna and second antenna are separate, and be installed on notebook computer inside separately separately, each antenna comprises radiating element with high-frequency radiation part and low frequency radiation portion and the grounding parts in order to assemble mutually with notebook computer, the main part aligned in general of the grounding parts of the main part of the grounding parts of first antenna and second antenna, the radiating element of each antenna all is positioned at aforementioned body the same side partly of the grounding parts of two antennas, and the low frequency radiation portion of first antenna and second antenna extends along straight line.

Compared with prior art, multifrequency antenna assembly of the present invention has the following advantages: this multifrequency antenna assembly disconnects setting with the grounding parts of each antenna in the integral aerial assembly, make each antenna can carry out dismounting as required respectively, effectively saved the space simultaneously again.

[description of drawings]

Fig. 1 is the stereogram of prior art multifrequency antenna assembly.

Fig. 2 is the stereogram of first execution mode of multifrequency antenna assembly of the present invention.

Fig. 3 is the stereogram of second execution mode of multifrequency antenna assembly of the present invention.

Fig. 4 is the stereogram of the 3rd execution mode of multifrequency antenna assembly of the present invention.

[embodiment]

The antenna module stereogram that is provided according to first execution mode of the present invention is provided.It comprises first antenna 2 that is used for WLAN (wireless local area network) and second antenna 3 that is used for wireless wide area network.

First antenna 2 comprises radiating element 210, grounding parts 230, connects the extended projection 240 of the connecting portion 220 of this radiating element 210 and grounding parts 230, autoradiolysis unit 210 and connecting portion 220 joints.Connecting portion 220 is L-shaped.Radiating element 210 comprises that first Department of Radiation 211 and second Department of Radiation, 212, the first Departments of Radiation 211 with a common radiation arm 2101 comprise that further first radiation arm, 2110, the second Departments of Radiation 212 also comprise second radiation arm 2121 and a L shaped metal arm 2122.Wherein connecting portion 220, first Department of Radiation 211 and second radiation arm 2121 are positioned at same plane A, and L shaped metal arm 2122 forms the second side arm 2122b that first a side arm 2122a and perpendicular to plane A is parallel to the plane from second radiation arm, 2121 vertical extent.Grounding parts 230 comprises main part 231, is divided into the installation portion 250 and the free end at main part 231 two ends, this free end is " L " shape sheet metal 232, and it has one perpendicular to main part 231 and upwardly extending side arm 2321 with extend and be parallel to the side arm 2322 of main part 231 from side arm 2321.Side arm 2322 has an end that slightly has a downwarp 2323, and installation portion 250 is connected by two " L " shape sheet metals 251,252 that electrically connect with the main part 231 of grounding parts 230.Installation portion be provided with the perforate of passing for screw rod so that first antenna 2 by screw in notebook computer or other portable terminal inside.Projection 240 autoradiolysis unit 210 extend with connecting portion 220 tie point Q, are used to connect feeder line (not shown).

Second antenna 3 comprises radiating element 310, grounding parts 330, connects the connecting portion 320 of this radiating element 310 and grounding parts 330, from connecting portion 320 extended projections 340.Radiating element 310 comprises first Department of Radiation 311 and second Department of Radiation 312 with a free end 311 '.Second Department of Radiation 312 and first Department of Radiation 311 are electrically connected at a P.Second Department of Radiation 312 comprises " L " shape sheet metal 3121,

sheet metal

3122,3123, wherein sheet metal 3121 is from the extension of first Department of Radiation, 311 ends, one side and perpendicular to first Department of Radiation 311, sheet metal 3122 is from sheet metal 3121 terminal sides extensions and perpendicular to sheet metal 3121, sheet metal 3123 is from sheet metal 3122 extensions and perpendicular to the sheet metal 3122 and first Department of Radiation 311.Grounding parts 330 comprises main part 331 and is divided into the installation portion 350 and the free end 333 at main part 331 two ends, this free end is L-shaped, and it has one perpendicular to the side arm 3321 of main part with extend and be parallel to the side arm 3322 of main part 331 from side arm 3321.Side arm 3322 has the end 3323 that slightly upwarps, and installation portion 350 is positioned on grounding parts 330 main parts 331 extended sheet metals 351.Projection 340 is positioned at first Department of Radiation 311 and is used to be connected feeder line (not shown) with connecting portion 320 tie points 0.

The installation portion 250 of first antenna 2 and the installation portion 350 of second antenna 3 lay respectively at the outside of multifrequency antenna assembly 1, and another the free end L shaped sheet metal relative with these installation portions then is positioned at the inboard.The side arm 2322 of " L " shape sheet metal 232 is provided with face-to-face with the side arm 3322 of " L " shape sheet metal 332, wherein side arm 3322 is positioned on the side arm 2322 and is parallel to side arm 2322, be not connected though side arm 2322,3322 is adjacent, thereby make things convenient for the user to change wherein any antenna as required.

First antenna 2 is used for WLAN (wireless local area network), and its first Department of Radiation 211 is used to transmit and receive the signal of upper frequency (being 5GHz), and second Department of Radiation 212 is used to transmit and receive the signal of lower frequency (being 2.4GHz).Second antenna 3 is used for wireless wide area network, and its first Department of Radiation 311 is used to transmit and receive the signal of upper frequency (being 1800-1900MHz), and second Department of Radiation 312 is used to transmit and receive the signal of lower frequency (being 900MHz).Second Department of Radiation 212 of first antenna 2 and second Department of Radiation 312 of second antenna 3 all are low frequency radiation portions, because low frequency radiation minister degree is longer, so all adopt the bending design in this antenna, thereby under the condition that does not influence the aerial radiation frequency band, effectively saved antenna volume, saved the space.

The antenna module stereogram that is provided according to second execution mode of the present invention is provided.It comprises first antenna 2 ' and second antenna 3 '.Wherein the configuration of first antenna 2 among first antenna 2 ' and first embodiment is identical, second antenna 3 ' is identical with second antenna, 3 configurations among first embodiment, but " L " shape sheet metal 332 ' end-to-end setting of " L " shape sheet metal 232 ' that first antenna 2 ' has among this embodiment and second antenna 3 ', the end 2323 ' of first antenna 2 ' aligns with the end 3323 ' of second antenna 3 ' and does not contact.

The antenna module stereogram that is provided according to the 3rd execution mode of the present invention is provided.It comprises first antenna 2 " and second antenna 3 ".Second antenna 3 wherein " with first embodiment in second antenna 3 " configuration identical, first antenna 2 " substantially identical with first antenna, 2 configurations in first execution mode; but first antenna 2 " do not have a grounding parts 230 of " L " shape sheet metal 232, the first antennas of the grounding parts 230 of first antenna 2 " comprise main part 231 " and autonomous agent part 231 " extended sheet metal 232 ".Sheet metal 232 " with second antenna 3 " grounding parts 330 " " L " shape sheet metal 332 " be arranged in parallel and keep at a certain distance away, sheet metal 232 " be positioned at " L " shape sheet metal 332 " below.

These three kinds of execution modes are three kinds of preferred mode of multifrequency antenna assembly of the present invention, and this antenna module also comprises other embodiment.Each antenna in the multifrequency antenna assembly of the present invention is fixed in by its installation portion separately on the portable equipments such as notebook computer, and the free end of its grounding parts can be by the plastic fixing that is fixed on the notebook computer.Because the volume of portable terminals such as notebook computer is more and more littler, can design the grounding parts of antenna module of the present invention and the shape and the mounting means of installation portion thereof according to the configuration of its inner space, make two antennas can effectively realize the function of combined type antenna described in prior art, the configuration that again can be flexibly changes grounding parts according to actual conditions make antenna can be respectively from carrying out dismounting.And the present invention is not limited to the assembling mode of two antennas, is equally applicable to a plurality of antennas, can change the configuration of antenna ground portion and installation portion according to actual needs.

Claims

1. multifrequency antenna assembly, be to be used for notebook computer, it comprises first antenna that is used for WLAN (wireless local area network) and second antenna that is used for wireless wide area network, first antenna and second antenna are separate, and be installed on notebook computer inside separately separately, each antenna comprises radiating element with high-frequency radiation part and low frequency radiation portion and the grounding parts in order to assemble mutually with notebook computer, it is characterized in that: the main part aligned in general of the grounding parts of the main part of the grounding parts of first antenna and second antenna, the radiating element of each antenna all is positioned at aforementioned body the same side partly of the grounding parts of two antennas, and the low frequency radiation portion of first antenna and second antenna extends along straight line.

2. multifrequency antenna assembly as claimed in claim 1, it is characterized in that: an end of the main part of the grounding parts of described first antenna and second antenna respectively extends to form the installation portion that has to fix with notebook, the other end then respectively forms a free end, the installation position of described two antennas is in the outside of aforementioned multifrequency antenna assembly, and the free end of described two antennas is positioned at the inboard of aforementioned multifrequency antenna assembly and does not contact mutually.

3. multifrequency antenna assembly as claimed in claim 2 is characterized in that: the aforementioned free end of the grounding parts of described first antenna and second antenna is face-to-face setting.

4. multifrequency antenna assembly as claimed in claim 2 is characterized in that: the aforementioned free end of the grounding parts of described first antenna and second antenna is end-to-end setting.

5. multifrequency antenna assembly as claimed in claim 2 is characterized in that: the aforementioned free end of the grounding parts of described first antenna and second antenna is to be arranged in parallel and keep at a certain distance away.

6. multifrequency antenna assembly as claimed in claim 1 is characterized in that: described first antenna comprises that working band falls within first Department of Radiation of 5GHz and second Department of Radiation that working band falls within 2.4GHz.

7. multifrequency antenna assembly as claimed in claim 1 is characterized in that: described second antenna comprises that working band falls within first Department of Radiation of 1800-1900MHz and second Department of Radiation that working band falls within 900MHz.

8. multifrequency antenna assembly as claimed in claim 1, it is characterized in that: described first antenna further comprises first Department of Radiation and second Department of Radiation and the connecting portion with a common radiation arm, described first Department of Radiation has first radiation arm, wherein connecting portion, first Department of Radiation and first radiation arm are positioned at same plane, and second radiation arm forms second side arm that first side arm and perpendicular to described plane is parallel to described plane from the first radiation arm vertical extent.

9. multifrequency antenna assembly as claimed in claim 1, it is characterized in that: described second antenna comprises first Department of Radiation that has a free end and be parallel to the grounding parts main part and second Department of Radiation that extends vertically upward from the first Department of Radiation free end, and wherein second Department of Radiation comprises the number of metal sheet that bending connects.