CN1967938B

CN1967938B - Multifrequency antenna

Info

Publication number: CN1967938B
Application number: CN 200510095784
Authority: CN
Inventors: 洪振达; 王舒嬿; 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: 2005-11-18
Filing date: 2005-11-18
Publication date: 2012-07-04
Anticipated expiration: 2025-11-18
Also published as: CN1967938A

Abstract

The invention relates to a multi-frequency antenna, used in notebook computer or other portable electric device, wherein it comprises radiator, ground part, connector connecting radiator and ground part, feedback point, feedback line and two mounting parts; the radiator comprises the first and second radiators to form one rectangle frame with one cut. The invention has small volume.

Description

Multifrequency antenna

[technical field]

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

[background technology]

Along with the high speed development of mobile communication, People more and more hopes to be equipped with a notebook computer or other portable electric appts 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 PackerRadio Service, GPRS) and WLAN (Wireless Local Area Network, WLAN).GPRS is the wireless network that a wide area covers, and its message transmission rate is probably at 30Kbps-50Kbps, and WLAN is the wireless network that a local covers, and its message transmission rate can reach 11Mbps (based on the 802.11b technology).People cooperate portable electric appts such as notebook computer through selecting the different radio network interface card, insert Internet whenever and wherever possible.Because the WLAN message transmission rate can reach 11Mbps, so provide public WLAN high-speed information service at some hot zones (hotel, airport, coffee-house, commercial center, conference and exhibition center).

At present, WLAN is the row standards based on bluetooth (Bluetooth) technical standard or IEEE802.11 mostly.The working band of antenna falls within 2.4GHz in the Bluetooth technology standard, and IEEE802.11 is that the working band of antenna in the row technical standard falls within 2.4GHz and 5GHz respectively.Therefore, the antenna in the present notebook computer is the multifrequency antenna that is applied to above-mentioned frequency band mostly.

(Planar Inverted-F Antenna PIFA) is a kind of small size antenna of mobile communication terminal commonly used to planar inverted " F " type multifrequency 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.Chinese patent is announced CN 2593384 Y numbers and has been disclosed a kind of planar inverted " F " type multifrequency antenna; It comprises Department of Radiation, grounding parts with two radiation arms of extending in opposite direction and the connecting portion that connects Department of Radiation and grounding parts; Though this antenna can be realized multiple-frequency operation, its long connecting portion makes the entire antenna size bigger, and framework is higher; Thereby occupy notebook computer or other portable electric appts inner than large space, be unfavorable for the electronics miniaturization Development Trend.

Consider above-mentioned drawback, the above-mentioned antenna of necessary improvement.

[summary of the invention]

The object of the present invention is to provide a kind of multifrequency antenna, it has small construction and size.

For realizing above-mentioned purpose, multifrequency antenna of the present invention is reached in the following manner:

A kind of multifrequency antenna is to be used for portable electric appts, and it has Department of Radiation, connecting portion and grounding parts; Wherein Department of Radiation is to be processed by sheet metal, comprises first and second Department of Radiation that an end links to each other, and first and second Departments of Radiation and said connecting portion are in same plane, and first and second Departments of Radiation are enclosed to form one and have the rectangle framework of breach.

Compared with prior art; The antenna advantage that the present invention processes is: first Department of Radiation and second Department of Radiation are enclosed to form one to have the rectangle framework of breach and is in same plane with connecting portion; Make the overall structure of multifrequency antenna littler; Take up space still less, be of value to notebook computer and other portable electric appts miniaturization Development Trend.

[description of drawings]

Fig. 1 is the stereogram of multifrequency antenna first execution mode of the present invention.

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

[embodiment]

Shown in Figure 1 is first execution mode of multifrequency antenna 10 of the present invention, and in this execution mode, multifrequency antenna 10 comprises Department of Radiation 11, grounding parts 13, connects the connecting portion 12 of Department of Radiation 11 and grounding parts 13, presents point 4, feeder line 5 and two installation portions 15.

Department of Radiation 11 comprises first Department of Radiation 16 and second Department of Radiation 17, and wherein, first Department of Radiation 16 is high-frequency radiation part, and it works in the 5GHz frequency band; Second Department of Radiation 17 is low frequency radiation portions, and it works in the 2.4GHz frequency band.Second Department of Radiation 17 have first radiation arm 171, from first radiation arm, 171 1 ends extend and perpendicular to second radiation arm 172 of first radiation arm 171, from second radiation arm, 172 1 ends along extend near first radiation arm, 171 directions and perpendicular to the 3rd radiation arm 173 of second radiation arm 172 and from the 3rd radiation arm 173 1 ends along extending near first radiation arm, 171 directions and perpendicular to the 4th radiation arm 174 of the 3rd radiation arm 173.First Department of Radiation 16 is positioned at same straight line from first radiation arm, 171 other ends of second Department of Radiation 17 and first radiation arm 171 and extends in opposite direction.First Department of Radiation 16 and the 17 common formation one of second Department of Radiation have the rectangle framework of breach, and the entire length of multifrequency antenna is reduced.Department of Radiation 11 is in same plane with connecting portion 12 and Department of Radiation 11 is positioned at connecting portion 12 1 sides, and multifrequency antenna 20 whole heights are reduced.

Grounding parts 13 comprises and is positioned at conplane first grounding parts 131 with Department of Radiation 11 and perpendicular to second grounding parts 132 of first grounding parts 131.

Connecting portion 12 roughly is instead " Z " type; And be positioned at same plane with the Department of Radiation 11 and first grounding parts 131, it comprises the first 121 that is connected with grounding parts 13, the third part 123 that is connected with the junction of second radiation arm 172 of second Department of Radiation 17 and the 3rd radiation arm 173 and the second portion 122 that connects first 121 and third part 123.

Feedback point 4 is positioned at first Department of Radiation 16 and second Department of Radiation, 17 junctions.Feeder line 5 comprises the inner wire 51, the inner insulating layer 52 that coats inner wire 51 that are welded in feedback point 4, be welded in the outer conductor 53 on second grounding parts 132 and coat the external insulation layer 54 of outer conductor.Two installation portions 15 extend from grounding parts 13 two ends respectively, be respectively equipped with on it in order to convenient multifrequency antenna 10 is installed on the perforate 151 on notebook computer or other portable electric appts (not shown).

Shown in Figure 2 is the multifrequency antenna 10 ' of second embodiment of the invention, and it comprises Department of Radiation 11 ', grounding parts 13 ', connects the connecting portion 12 ' of Department of Radiation 11 ' and grounding parts 13 ', presents point 4 ', feeder line 5 ' and two installation portions 15 '.In this execution mode, feedback point 4, feeder line 5 and the installation portion 15 of multifrequency antenna 10 are basic identical in feedback point 4 ', feeder line 5 ' and the installation portion 15 ' and first execution mode, and its structure repeats no more here.

Department of Radiation 11 ' comprises first Department of Radiation 16 ' and second Department of Radiation 17 '.Second Department of Radiation 16 ' comprise first radiation arm 171 ', from first radiation arm, 171 ' one end extend and perpendicular to second radiation arm 172 ' of first radiation arm 171 ', from second radiation arm, 172 ' one end along extend near first radiation arm, 171 ' direction and perpendicular to the 3rd radiation arm 173 ' of second radiation arm 172 ' and from the 3rd radiation arm 173 ' one end along extending near first radiation arm, 171 ' direction and perpendicular to the 4th radiation arm 174 ' of the 3rd radiation arm 173 '.First Department of Radiation 16 ' is positioned at same straight line from first radiation arm, the 171 ' other end of second Department of Radiation 17 ' and first radiation arm 171 ' and extends in opposite direction.Grounding parts 13 ' comprises first grounding parts 131 ' and second grounding parts 132 '.Second grounding parts 132 ' is torn near connecting portion 12 ' one end and upwards is bent with a protuberance 141, and this protuberance 141 can play the fixedly effect of feeder line 5 '.Connecting portion 12 ' is positioned at the one extension vertically downward of same straight line from second radiation arm, 172 ' one end and second radiation arm 172 '; The length of its vertical direction equals Department of Radiation 11 ' and is in same plane to the minimum range between the grounding parts 13 ' and with Department of Radiation 11 ', and its other end connects grounding parts 13 '.

Claims

1. a multifrequency antenna is to be used for portable electric appts, and it has Department of Radiation, connecting portion and grounding parts; Wherein Department of Radiation is to be processed by sheet metal, comprises first and second Department of Radiation that an end links to each other; It is characterized in that: first and second Departments of Radiation and said connecting portion are in same plane; And first and second Departments of Radiation are enclosed to form one and have the rectangle framework of breach; The junction of first, second Department of Radiation is provided with the feedback point; And the feedback point is provided with said connecting portion at interval; Grounding parts comprises that being positioned at conplane first grounding parts with Department of Radiation reaches second grounding parts perpendicular to first grounding parts, and said multifrequency antenna also comprises two installation portions that extend from the grounding parts two ends, and two installation portions and Department of Radiation are in same plane.

2. multifrequency antenna as claimed in claim 1 is characterized in that: said first and second Departments of Radiation are positioned at connecting portion the same side.

3. multifrequency antenna as claimed in claim 2 is characterized in that: said connecting portion roughly is instead " Z " shape, the second portion that it comprises the first that is connected with grounding parts, the third part that is connected with Department of Radiation and connects first and third part.

4. multifrequency antenna as claimed in claim 3 is characterized in that: said second Department of Radiation comprises first radiation arm, second radiation arm, the 3rd radiation arm and the 4th radiation arm; First radiation arm and the 3rd radiation arm are parallel to each other, and second radiation arm and the 4th radiation arm are parallel to each other, and the first, the 3rd radiation arm is perpendicular to the second, the 4th radiation arm.

5. multifrequency antenna as claimed in claim 4 is characterized in that: said second radiation arm and the 3rd radiation arm are incorporated into connecting portion one end.

6. multifrequency antenna as claimed in claim 1 is characterized in that: said second Department of Radiation have first radiation arm, from first radiation arm, one end extend and perpendicular to second radiation arm of first radiation arm, from second radiation arm, one end along extend near the first radiation arm direction and perpendicular to the 3rd radiation arm of second radiation arm and from the 3rd radiation arm one end along extending near the first radiation arm direction and perpendicular to the 4th radiation arm of the 3rd radiation arm.

7. multifrequency antenna as claimed in claim 6 is characterized in that: second radiation arm of the said connecting portion and second Department of Radiation is positioned at same straight line, and its length equals the minimum range of Department of Radiation to grounding parts.

8. multifrequency antenna as claimed in claim 7 is characterized in that: first radiation arm of said first Department of Radiation and second Department of Radiation is positioned at same straight line and extends round about.

9. multifrequency antenna as claimed in claim 8 is characterized in that: said grounding parts is torn near connecting portion one end and upwards is bent with a protuberance.

10. multifrequency antenna as claimed in claim 6 is characterized in that: said breach is formed between the free terminal of inboard and first Department of Radiation of the 4th radiation arm of second Department of Radiation.