CN101615718A

CN101615718A - Antenna module

Info

Publication number: CN101615718A
Application number: CN 200810302287
Authority: CN
Inventors: 戴隆盛; 苏纹枫; 陈尚仁; 邱俊铭
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: 2008-06-24
Filing date: 2008-06-24
Publication date: 2009-12-30
Anticipated expiration: 2028-06-24
Also published as: CN101615718B

Abstract

The invention discloses a kind of antenna module, it comprise have large stretch of electric conductor have an accepting groove with printed circuit board (PCB), lower surface as the grounding parts of antenna module and be fixed in the printed circuit board (PCB) upper surface strutting piece, be fixed in antenna body, low noise amplification module and feeder line on the strutting piece.Wherein antenna body comprise Department of Radiation, electrically connect and form first brace of a feedback point with Department of Radiation and electrically connect with Department of Radiation and with first brace be spaced a distance with printed circuit board (PCB) on second brace that electrically connects of grounding parts; The low noise amplification module is arranged in the upper surface of printed circuit board (PCB) and is contained in the accepting groove of strutting piece, itself and described grounded part from, electrically connect with first brace of described antenna body; Thereby feeder line comprises that a heart yearn is connected with the low noise amplification module to be electrically connected with first brace and a braid is connected with grounding parts on the described printed circuit board (PCB).

Description

Antenna module

[technical field]

The invention relates to a kind of antenna module, especially refer to a kind of antenna module that is used for mobile electronic device.

[background technology]

Global positioning system (GPS, Global Positioning System) owing to its stationkeeping ability and navigation feature accurately easily, more and more has been used in by (for example PDA, mobile phone etc.) in the vehicles (as automobile, steamer etc.) or the modern mobile electronic device.Along with the needs of modern industry design, the Anneta module that is used for transmitting and receiving signal is incorporated into mobile electronic device more.Therefore the miniaturization of Anneta module is very important.

It is ceramic antennas that traditional gps antenna has many, and since the needs of industrial design how gps antenna and radio frequency amplifier are incorporated on the printed circuit board (PCB).The TaiWan, China patent announcement has disclosed a kind of GPS combined type antenna sets for No. 559348, this antenna sets comprises that GPS pottery block antenna, that a printed circuit board (PCB) (PCB), is arranged at printed circuit board (PCB) one side is arranged at the low noise amplifier (LNA, Low Noise Amplifier) of printed circuit board (PCB) opposite side.This gps antenna makes the both sides that ceramic antenna and LNA are arranged at PCB respectively the height of entire antenna group is the thickness sum of ceramic antenna, LNA and PCB, thereby makes antenna sets have bigger height.Therefore be necessary to provide a kind of antenna module can make the back shared spatial altitude of fitting together of antenna, PCB and LNA less.

[summary of the invention]

The object of the present invention is to provide a kind of antenna module of scaled-down version.

To achieve these goals, the present invention adopts following technical scheme: a kind of antenna module comprise have large stretch of electric conductor have an accepting groove with printed circuit board (PCB), lower surface as the grounding parts of antenna module and be fixed in the printed circuit board (PCB) upper surface strutting piece, be fixed in antenna body, low noise amplification module and feeder line on the strutting piece; Wherein, antenna body comprise Department of Radiation, electrically connect and form first brace of a feedback point with Department of Radiation and electrically connect with Department of Radiation and with first brace be spaced a distance with printed circuit board (PCB) on second brace that electrically connects of grounding parts; The low noise amplification module is arranged in the upper surface of printed circuit board (PCB) and is contained in the accepting groove of strutting piece, itself and described grounded part from, electrically connect with first brace of described antenna body; Thereby feeder line comprises that a heart yearn is connected with the low noise amplification module to be electrically connected with first brace and a braid is connected with grounding parts on the described printed circuit board (PCB).

Compared to prior art, antenna module of the present invention has the following advantages: the low noise amplification module is contained in the accepting groove of strutting piece, has dwindled the whole height of antenna module under the situation of the radiance that does not influence antenna body.

[description of drawings]

Fig. 1 is the stereogram of antenna module of the present invention.

Fig. 2 is the three-dimensional exploded view of antenna module of the present invention.

Fig. 3 is the view of another angle of Fig. 2.

[embodiment]

Referring to figs. 1 through shown in Figure 3, it is the stereogram of preferred embodiment of the present invention.Among this embodiment antenna module 1 comprise strutting piece 10, be attached at antenna body 20 on the strutting piece 10, the printed circuit board (PCB) 30 and the feeder line 40 of fixed antenna body 20 and strutting piece 10.

Strutting piece 10 is a cube, and it comprises a pair of projection 11, the lower surface that extend upward from upper surface cave inward an accepting groove 12 that forms and a pair of reference column 13 that extends and be positioned at accepting groove 12 both sides from lower surface downwards.

Antenna body 20 is a planar inverted-F antenna (PIFA), and is attached at three surfaces of strutting piece 10.This antenna body 20 comprises connecting portions 22 that a Department of Radiation 21, autoradiolysis portion 21 extends and first brace 23,

second brace

24,25 that extend from the diverse location of connecting portion 22 respectively downwards downwards.Department of Radiation 21 is parallel with printed circuit board (PCB) 30 substantially, and its terminal segment distance that extends downwards makes the cross section of Department of Radiation 21 L-shaped, and Department of Radiation 21 is attached at two surfaces of strutting piece 10 respectively.The Department of Radiation 21 that is attached at strutting piece 10 upper surfaces has the corresponding through hole 210 of projection 11 of a pair of and strutting piece 10, thereby make projection 11 can pass through hole Department of Radiation 21 better is fixed on the strutting piece 10.Connecting portion 22 autoradiolysis portions 21 extend downwards, are attached at a side of strutting piece 10 and vertical with Department of Radiation 21.Connecting portion 22 comprises first support arm 221 perpendicular to Department of Radiation 21, is parallel to second support arm 222 of Department of Radiation 21, wherein forms a fluting between second support arm 222 and the Department of Radiation 21.Second support arm 222 comprise narrower first section 2221 and with second section 2222 of first section 2221 broad that links to each other.First brace 23 a bit extends downwards from first section 2221 middle part.

Second brace

24,25 extends in order to be welded on the printed circuit board (PCB) 30 downwards from second section 2222.

Printed circuit board (PCB) 30 comprises that a low noise amplification module (not shown) is positioned at the zone 31 that dotted line touches off, be positioned at 31 both sides, low noise amplification module region and with the reference column 13 corresponding a pair of location holes 32 of strutting piece 10, and with first of antenna body 20,

second brace

23,24,25

corresponding opening

33,34,35 usefulness are for first,

second brace

23,24, thereby 25 pass and make more firm being welded on the printed circuit board (PCB) 30 and connecting with the circuit on the printed circuit board (PCB) 30 of brace 23-25.Large stretch of electric conductor (not shown) on opening 34,35 and the printed circuit board (PCB) 30 electrically connects, and opening 33 electrically connects with low noise amplifier circuit and is separated with large stretch of electric conductor.Wherein first brace 23 electrically connects and the feedback point (not shown) of formation antenna body 20 with the low noise amplification module, and

second brace

24,25 links to each other with large stretch of electric conductor on the printed circuit board (PCB) 30.Large stretch of electric conductor on the printed circuit board (PCB) 30 is as the grounding parts of antenna body 20, and is separated between the low noise amplification module.

The reference column 13 of strutting piece 10 passes location hole 32 and strutting piece 10 and printed circuit board (PCB) 30 is fixed together, and wherein the electronic component in the low noise amplification module all has certain height, and it all is housed in the accepting groove 12 of strutting piece 10.Low noise amplification module, strutting piece 10 and antenna body 20 all are positioned at the upper surface of printed circuit board (PCB) 30.

Feeder line 40 also is positioned at the upper surface of printed circuit board (PCB) 30, it comprises heart yearn 41 and braid 42, wherein thereby first brace 23 that links to each other with the low noise amplification module by low noise amplification module and antenna body 20 of heart yearn 41 is electrical connected, and braid 42 links to each other with large stretch of electric conductor on the printed circuit board (PCB) 30 and forms earth point (not label).Because the low noise amplification module can amplify the small-signal that antenna body 20 is received from air interface, reduce noise jamming, therefore need the low noise amplification module is connected between antenna body 20 and the feeder line 40, pass through feeder line 40 transmission again after the signal that makes antenna body 20 receive is handled by the low noise amplification module.

In the present embodiment, strutting piece 10 is the material that a working of plastics rather than ceramic chip etc. have specific dielectric coefficient, and the structure of the accepting groove 12 of the portion that sets within it can not change the radiation characteristic of antenna body 20.And strutting piece 10 is offered accepting groove 12 in order to accommodate low noise amplification module institute load electronic component, can effectively save the space, with antenna is compared with the structure that the low noise amplification module is arranged on the printed circuit board (PCB) both sides, the whole height of antenna module of the present invention is effectively reduced.

In the present embodiment, antenna body 20 is a gps antenna.Among other embodiment, be used for the antenna of other frequency band if also can adopt this kind structure of present embodiment need be incorporated into antenna body and low noise amplification module on the same printed circuit board (PCB) time, the low noise amplification module is contained in the accepting groove of strutting piece, but the change that is noted that its shape of strutting piece of unlike material may exert an influence to antenna performance, therefore will select suitable material in order to mate corresponding antenna as required.Among other embodiment, the assembling mode of antenna body and strutting piece also can adopt various modes such as stickup, hot melt, riveted joint as required.

Claims

1. antenna module, comprise the printed circuit board (PCB), the strutting piece that is fixed in the printed circuit board (PCB) upper surface that have as large stretch of electric conductor of antenna module grounding parts, be fixed in antenna body on the strutting piece, be positioned at the low noise amplification module of printed circuit board (PCB) upper surface and comprise heart yearn and the feeder line of braid, described antenna body comprises Department of Radiation, electrically connect and form first brace of a feedback point with Department of Radiation and electrically connect with Department of Radiation and with first brace be spaced a distance with printed circuit board (PCB) on second brace that electrically connects of grounding parts; It is characterized in that: the lower surface of described strutting piece has an accepting groove, the low noise amplification module is arranged in the upper surface of printed circuit board (PCB) and is contained in the accepting groove of strutting piece, itself and described grounded part from, electrically connect with first brace of described antenna body, thereby described heart yearn is connected with the low noise amplification module and first brace electrically connects, and described braid is connected with grounding parts on the described printed circuit board (PCB).

2. antenna module as claimed in claim 1 is characterized in that: described strutting piece is a cubical working of plastics.

3. antenna module as claimed in claim 1 is characterized in that: described antenna body is a gps antenna.

4. antenna module as claimed in claim 1 is characterized in that: it is one L shaped that one section of the terminal bending downwards of the Department of Radiation of described antenna body forms the cross section of Department of Radiation.

5. antenna module as claimed in claim 1 is characterized in that: described antenna body also comprises the connecting portion that extends from described Department of Radiation downwards, and described connecting portion comprises one perpendicular to first support arm of Department of Radiation and second support arm that is parallel to Department of Radiation.

6. antenna module as claimed in claim 5 is characterized in that: form a fluting between described second support arm and the Department of Radiation, and comprise narrower first section and second section of broad.

7. antenna module as claimed in claim 6 is characterized in that: described first and second braces extend downwards from connecting portion, and wherein first brace links to each other with first section, and second brace links to each other with second section.

8. as claim 6 or 7 described antenna modules, it is characterized in that: described antenna body comprises two second braces, and two second braces extend downwards from second section of connecting portion respectively.

9. antenna module as claimed in claim 1 is characterized in that: have some using for brace with described brace corresponding opening antenna body on the described printed circuit board (PCB) and pass.

10. antenna module as claimed in claim 9, it is characterized in that: the opening that described confession first brace passes is to electrically connect with the low noise amplification module, thereby first brace can be electrically connected with the low noise amplification module, opening that described confession second brace passes and grounding parts electrically connect, thereby second brace can be electrically connected with grounding parts.