CN101567489B

CN101567489B - Composite antenna

Info

Publication number: CN101567489B
Application number: CN2008103012166A
Authority: CN
Inventors: 王舒嬿; 洪振达; 柯云龙
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: 2008-04-21
Filing date: 2008-04-21
Publication date: 2013-07-10
Anticipated expiration: 2028-04-21
Also published as: CN101567489A

Abstract

The invention discloses a composite antenna, which comprises a grounding part, a first antenna and a feeder line, wherein the grounding part is provided with two lengthwise sides; the first antenna comprises a first radiation body arranged to the grounding part at intervals, and a first connection part connected with the first radiation body and the grounding part; a second antenna comprises a second radiation body arranged to the grounding part at intervals, and a second connection part connected with the second radiation body and the grounding part; the first antenna extends from one side ofthe grounding part, is applied to WLAN and WiMAX, and can work in a lower frequency band and a higher frequency band at the same time; and the second antenna extends from the other side of the ground ing part, is applied to WWAN, and can work in the lower frequency band and the higher frequency band at the same time. The composite antenna can work in WLAN, WWAN and WiMAX frequency bands at the same time.

Description

Combined antenna

[technical field]

The present invention relates to a kind of combined antenna, especially refer to a kind of combined antenna that is applied to portable electric appts such as notebook computer.

[background technology]

In the modern electronic equipment, use wireless communication technique that data, sound, image etc. are carried out wireless transmission and more and more used.Antenna as a kind of element in order to the induced electricity magnetic wave, is the necessary device of employing wireless mechanics of communication equipment.Nowadays, people require more and more higher for the wireless access of portable electric appts, be not content with and only just inserted WLAN (Wireless Local Area Network, WLAN (wireless local area network)) or WWAN (Wireless Wide Area Network, wireless wide area network) or simultaneously insert WLAN and WWAN, but wish to insert WiMAX (Worldwide Interoperability for Microwave Access, global intercommunication microwave access) simultaneously.

At present, WLAN is mostly based on bluetooth (Bluetooth) technical standard or Wi-Fi standard.The working band of antenna falls within 2.4GHz in the Bluetooth technology standard, and the antenna working band falls within 2.4GHz and 5GHz respectively in the Wi-Fi series technique standard.And WWAN is mostly based on GSM (Global System for Mobile communication), GPS (Global Positioning System, global positioning system) and CDMA (Code Division Multiple Access, the demal multitask accesses) technical standard.GSM technical work frequency band falls within 900MHz and 1800MHz.The GPS technical standard works in the 1575MHz frequency band.The CDMA technology standard operation in 900,1800,2100MHz.The WiMAX technical standard operates mainly in 2.5GHz, 3.5GHz and 5GHz frequency band.

Make portable electric appts can work in WLAN, WWAN and WiMAX simultaneously, just must installation can work in the antenna of above-mentioned frequency band.The general employing realizes together that with three combination of antennas electronic equipment works in WLAN, WWAN and WiMAX simultaneously in the prior art, and first antenna works in WLAN, and second antenna works in WWAN and the 3rd antenna works in WiMAX.But because due to the electronics miniaturization trend, a lot of electronic equipment internal insufficient spaces are to install such combination of antennas.

In view of above-mentioned drawback, a kind of improved combined antenna of necessary design is to remedy above-mentioned shortcoming.

[summary of the invention]

The objective of the invention is to carry a kind of combined antenna that can work in three kinds of application networks simultaneously.

To achieve these goals, the present invention adopts following technical scheme: a kind of combined antenna, and it comprises: it has grounding parts, first antenna and the feeder line of lengthwise dual-side; Described first antenna comprises first radiant body that arranges at interval with described grounding parts and first connecting portion that is connected first radiant body and grounding parts; Described second antenna comprises second radiant body that arranges at interval with described grounding parts and second connecting portion that is connected second radiant body and grounding parts; Described first antenna extends out and is applied to WLAN and WiMAX from described grounding parts one side, can work in a lower band and a high frequency band simultaneously; Described second antenna extends out and is applied to WWAN from another side of described grounding parts, can work in a lower band and a high frequency band simultaneously.

Combined antenna of the present invention has the following advantages: first antenna works in WLAN and WiMAX simultaneously, second antenna works in WWAN and realizes that combined antenna can work in three kinds of application networks simultaneously, extend upward respectively from the both sides of grounding parts and projection zero lap on horizontal plane by first antenna and second antenna, thereby can reduce the volume of combined antenna and reduce mutual interference mutually between first antenna and second antenna, because of the existence of parasitic radiation portion, the frequency range of combined antenna is increased again.

[description of drawings]

Fig. 1 is the three-dimensional assembly diagram of combined antenna of the present invention.

Fig. 2 is the three-dimensional assembly diagram of another angle of combined antenna shown in Figure 1.

Fig. 3 is the voltage standing wave ratio figure of first antenna of combined antenna of the present invention.

Fig. 4 is the voltage standing wave ratio figure of second antenna of combined antenna of the present invention.

[embodiment]

Combined antenna of the present invention is that be installed in the electronic equipment can transmitting/receiving wireless local area network (LAN) (WLAN) and the signal of wireless wide area network (WWAN) and global intercommunication microwave access (WiMAX).Please refer to Fig. 1 to shown in Figure 2, it is the stereogram of embodiment of the present invention combined antenna 100.In this embodiment, combined antenna 100 is to be formed by sheet metal bending cutting, comprises the grounding parts with lengthwise dual-side 3 that is positioned at horizontal plane, the installation portion 4 that is positioned at grounding parts 3 two ends, 5 and upwardly extending first antenna 1 and second antenna 2 from grounding parts 3 both sides respectively.

First antenna 1 works in WLAN and WiMAX, first connecting portion 12 that is positioned at vertical plane that it extends upward and comprise first radiant body 11 that arranges at interval with grounding parts 3 and be connected first radiant body 11 and grounding parts 3 from grounding parts 3 one sides.First 121 of comprising that an end is connected with grounding parts 3 of first connecting portion 12 and an end are connected in second 122 that P is ordered on first radiant body 11.The end that described grounding parts 3 and first connecting portion are 12 first 121 is connected, and form a long and narrow fluting 31 between the two, described fluting 31 caves inward from the side of grounding parts 3 and forms and be positioned at plane, grounding parts 3 place, thereby reduces the height of first antenna 1.First radiant body 11 comprises first Department of Radiation 111 that works in the 5.15GHz-5.85GHz frequency band and second Department of Radiation 112 that works in the 2.4GHz-2.7GHz frequency band.The binding site P of first connecting portion 12 and first radiant body 11 also is the cut-point of first Department of Radiation 111 and second Department of Radiation 112.The inner wire of one feeder line (not shown) is welded in above-mentioned P point, and the outer conductor of this feeder line is welded on the grounding parts 3.The first half of first Department of Radiation 111 is inside, the extension that is inclined upwardly, and design is in order to reduce the antenna whole height like this.Described second Department of Radiation 112 is roughly Z-shaped, its be included in first radiation arm 1121 that is the L type in the vertical plane with that link to each other with first radiation arm 1121 and inwardly, extend upward second radiation arm 1122 that is the L type.The whole height that second radiation arm, 1122 first halves are inside, the extension that is inclined upwardly can suitably reduce antenna.The height of first antenna 1 is lower than the height of installation portion 4.

Second antenna 2 works in WWAN, and its another side from grounding parts 3 extends upward and comprises second radiant body 21 that arranges at interval with grounding parts 3 and be connected second connecting portion 22 that is positioned at vertical plane of second radiant body 21 and grounding parts 3.Second connecting portion 22 comprises from grounding parts 3 sides and tilts upwardly extending first section 221 and extend vertically upward from first section 221 adjacent end place and be connected in second section 222 of second radiant body 21.The inner wire of one feeder line (not shown) is electrically connected at the Q point of first section 221 end.Second radiant body, 21 major parts are parallel to the plane at grounding parts 3 places and comprise the 3rd Department of Radiation 211 that works in the 900MHz frequency band and the 4th Department of Radiation 212 that works in the 1800MHz frequency band.Second radiant body 21 is from being split into the 3rd Department of Radiation 211 and the 4th Department of Radiation 212 with second connecting portion, 22 junctions.The 3rd Department of Radiation 211 comprises the 3rd radiation arm 2111 that is parallel to grounding parts 3 and the 4th radiation arm 2112 that extends from the 2111 terminal bendings of the 3rd radiation arm downwards.The 4th Department of Radiation 212 comprises the 5th radiation arm 2121 that is parallel to grounding parts 3 and the 6th radiation arm 2122 that extends vertically downward from the 5th radiation arm 2121 ends.Second radiant body, the 21 lengthwise two ends of second antenna 2 are respectively close to installation portion 4,5, and the height of second antenna 2 and installation portion 4 are highly about the same.

One is L type parasitic radiation portion 7 extends contiguous second connecting portion 22 of a side of second antenna 2 and extends upward with grounding parts 3 junctions on grounding parts 3.Parasitic radiation portion 7 comprise the first arm 71 that extends vertically upward from grounding parts 3 and from the first arm 71 ends to away from horizontally extending second arm 72 of second connecting portion, 21 directions.Second radiant body 21 is being provided with a rectangular indentation 213 to reduce the phase mutual interference of 21 of parasitic radiation portion 7 and second radiant bodies with second arm, 72 adjacent domains.The length of the 4th Department of Radiation 212 of parasitic radiation portion 7 length and second radiant body 21 is roughly suitable.Because the length of aerial radiation portion is substantially equal to 1/4 wavelength of this Department of Radiation working band centre frequency, therefore, the working band of the frequency band of parasitic radiation portion 7 work and the 4th Department of Radiation 212 of second radiant body 21 is close and couples together with the working band of the 4th Department of Radiation 212 becomes a wideer frequency band.

Installation portion 4,5 is arranged at grounding parts 3 two ends respectively.Big installing hole all is set installation portion 4,5 and a less installing hole is installed in antenna in notebook computer or other mobile electronic equipment with convenient.

Please refer to shown in Figure 3ly, it is the VSWR figure of first antenna 1 of embodiment of the present invention combined antenna 100.But first antenna, 1 operating frequency is 2.4GHz-2.7GHz, 5.15GHz-5.85GHz as can be seen from Figure 3.Above-mentioned frequency band has covered the frequency band of the technical standard work such as BlueTooth, Wi-Fi of WiMAX and WLAN.

Please refer to shown in Figure 4ly, it is the VSWR figure of second antenna 2 of embodiment of the present invention combined antenna 100.As can be seen from Figure 4, but second antenna, 2 operating frequencies are 824MHz-960MHz, 1.71GHz-2.17GHz.Above-mentioned frequency band has covered the frequency band of GSM, CDMA2000, WCDMA and the TD-SCDMA technology standard operation of WWAN except GPS.

Embodiment of the present invention combined antenna 100 is under the acting in conjunction of first antenna 1, second antenna 2 and parasitic radiation portion 7, and the frequency band that can work has covered the frequency band of the current popular most of technical standard work of WWAN, WLAN and WiMAX.And first antenna 1 extends upward from the relative both sides of grounding parts 3 respectively with second antenna 2, and first antenna 1 is at utmost reduced with the mutual interference mutually of second antenna 2.

Claims

1. combined antenna, it comprises: it has grounding parts, first antenna and the feeder line of lengthwise dual-side; Described first antenna comprises first radiant body that arranges at interval with described grounding parts and first connecting portion that is connected first radiant body and grounding parts; Described second antenna comprises second radiant body that arranges at interval with described grounding parts and second connecting portion that is connected second radiant body and grounding parts; It is characterized in that: described first antenna extends out and is applied to WLAN and WiMAX from described grounding parts one side, and its operating frequency is 2.4GHz to 2.7GHz, 5.15GHz to 5.85GHz; Described second antenna extends out and is applied to WWAN from another side of described grounding parts, its operating frequency is that operating frequency is 824MHz to 960MHz, 1.71GHz to 2.17GHz, described first radiant body be provided with the first half inwardly, be inclined upwardly first Department of Radiation that extends and Z-shaped second Department of Radiation roughly, described second Department of Radiation be included in first radiation arm that is the L type in the vertical plane and link to each other with described first radiation arm and the first half inwardly, the extension that is inclined upwardly is second radiation arm of L type.

2. combined antenna as claimed in claim 1, it is characterized in that: described combined antenna also comprises contiguous second connecting portion of a side of extending second antenna on grounding parts and grounding parts junction upwardly extending L type parasitic radiation portion, and this parasitic radiation portion can increase the high frequency radiation frequency band of second antenna.

3. combined antenna as claimed in claim 2 is characterized in that: described parasitic radiation portion comprise the first arm that extends vertically upward from grounding parts and from the first arm end to away from horizontally extending second arm of the second connecting portion direction.

4. combined antenna as claimed in claim 3 is characterized in that: described second radiant body comprises the 3rd Department of Radiation that works in the 900MHz frequency band and the 4th Department of Radiation that works in the 1800MHz frequency band.

5. combined antenna as claimed in claim 4, it is characterized in that: described the 3rd Department of Radiation is provided with the 3rd radiation arm that parallels with second arm, and described the 3rd radiation arm is being provided with a rectangular indentation to reduce the phase mutual interference between parasitic radiation portion and second radiant body with the equitant zone of second arm.

6. combined antenna as claimed in claim 1, it is characterized in that: described second connecting portion is provided with from the grounding parts side and is tilted to first section of linearly extension and extend vertically upward from first section adjacent end place and be connected in second section of second radiant body, described second antenna comprises that one is provided with the feeder line of inner wire, and described inner wire is electrically connected at first section end.

7. combined antenna as claimed in claim 1, it is characterized in that: described first radiant body comprises first Department of Radiation that works in 5.15GHz to 5.85GHz frequency band and second Department of Radiation that works in 2.4GHz to 2.7GHz frequency band, and described first radiant body can work in WLAN and WiMAX simultaneously.

8. combined antenna as claimed in claim 1, it is characterized in that: described first connecting portion extends vertically upward and comprises that first of being connected with grounding parts and an end are connected in second of first radiant body from the side of grounding parts, form a fluting between first of described first connecting portion and the grounding parts, described fluting caves inward from the side of grounding parts and forms and be positioned at plane, grounding parts place.

9. as arbitrary described combined antenna in the claim 1 to 8, it is characterized in that: each is formed with an installation portion vertically upward described grounding parts lengthwise two ends, and described first antenna and second antenna are all between this is to installation portion.

10. combined antenna as claimed in claim 9, it is characterized in that: described first antenna, second antenna, installation portion all are positioned at the same side of grounding parts plate body, described first antenna, second antenna extend to form from the dual-side of described grounding parts respectively, the second radiant body lengthwise two ends of described second antenna are near two installation portions, and the height of the height of second antenna and installation portion is about the same.