CN101615718B

CN101615718B - Antenna assemble

Info

Publication number: CN101615718B
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: 2013-06-12
Anticipated expiration: 2028-06-24
Also published as: CN101615718A

Abstract

The invention discloses an antenna assemble comprising a printed circuit board (PCB), a supporting piece, an antenna body, a low-noise amplification module and a feeder line. The PCB is provided with a large sheet of conductive body which is used as the grounding part of the antenna assemble; the supporting piece is provided with a containing groove on the lower surface and is fixed on the upper surface of the PCB; the antenna body is fixed on the supporting piece and comprises a radiation part, a first connecting sheet and a second connecting sheet; the first connecting sheet is electrically connected with the radiation part to form a feeder point; the second connecting sheet is electrically connected with the radiation part and is separated from the first connecting sheet at a certain distance for electrically connecting the grounding part of the PCB; the low-noise amplification module is arranged on the upper surface of the PCB, is contained in the containing groove of the supporting piece, is separated from the grounding part and is electrically connected with the first connecting sheet of the antenna body; the feeder line comprises a core line and a weaving layer; the core line is connected with the low-noise amplification module for electrically connecting the first connecting sheet; and the weaving layer is connected with the grounding part of the PCB.

Description

Antenna module

[technical field]

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

[background technology]

Global positioning system (GPS, Global Positioning System) due to its stationkeeping ability and navigation feature accurately easily, more and more be used in the vehicles (as automobile, steamer etc.) or modern mobile electronic device (such as PDA, mobile phone etc.).Along with the needs of Contemporary Industrial 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 due to the needs of industrial design, how gps antenna and radio frequency amplifier is incorporated on a printed circuit board (PCB).The TaiWan, China patent announcement has disclosed a kind of GPS compound antenna group 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 is arranged at ceramic antenna and LNA respectively the both sides of PCB, and the height that makes whole antenna sets is the thickness sum of ceramic antenna, LNA and PCB, thereby makes antenna sets have larger height.Therefore be necessary to provide a kind of antenna module can make the rear 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 strutting piece; Wherein, antenna body comprise Department of Radiation, is electrically connected and forms the first brace of a feedback point with Department of Radiation and be electrically connected with Department of Radiation and with the first brace be spaced a distance with printed circuit board (PCB) on the second brace of grounding parts electric connection; 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, be electrically connected with the 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 the first brace and a braid is connected with grounding parts on 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, in the situation that do not affect the whole height that the radiance of antenna body has dwindled antenna module.

[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.In this embodiment antenna module 1 comprise strutting piece 10, be attached at antenna body 20 on strutting piece 10, 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, it comprise a pair of projection 11, the lower surface that extend upward from upper surface cave inward the accepting groove 12 that forms and from lower surface to downward-extension and be positioned at a pair of reference column 13 of accepting groove 12 both sides.

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

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 a pair of location hole 32 corresponding with the reference column 13 of strutting piece 10, and with first of antenna body 20, the second brace 23, 24, the opening 33 of 25 correspondences, 34, 35 use are for first, the second brace 23, 24, thereby 25 pass and make more firm being welded on printed circuit board (PCB) 30 and connecting with the circuit on printed circuit board (PCB) 30 of brace 2325.

Opening

34,35 and printed circuit board (PCB) 30 on large stretch of electric conductor (not shown) be electrically connected, opening 33 is electrically connected and is separated with large stretch of electric conductor with low noise amplifier circuit.Wherein the first brace 23 is electrically connected and the feedback point (not shown) of formation antenna body 20 with the low noise amplification module, and the second brace 24,25 is connected with large stretch of electric conductor on printed circuit board (PCB) 30.Large stretch of electric conductor on 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 the first brace 23 of being connected 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 is connected and forms earth point (not label) with large stretch of electric conductor on printed circuit board (PCB) 30.The small-signal of can amplifying antenna body 20 receiving from air interface due to the low noise amplification module, reduce noise jamming, therefore need the low noise amplification module is connected between antenna body 20 and feeder line 40, make the signal that antenna body 20 receives transmit by passing through again feeder line 40 after the low noise amplification resume 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 section 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, compare with the structure that antenna and low noise amplification module is arranged on 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.In other embodiment, need to be with antenna body and module integrated this kind structure that also can adopt the present embodiment on same printed circuit board (PCB) time of low noise amplification if be used for the antenna of other frequency band, the low noise amplification module is contained in the accepting groove of strutting piece, but the change that should be noted its shape of strutting piece of unlike material may exert an influence to antenna performance, therefore will select as required suitable material in order to mate corresponding antenna.In other embodiment, the assembling mode of antenna body and strutting piece also can adopt the various modes such as stickup, hot melt, riveted joint as required.

Claims

1. antenna module, comprise the printed circuit board (PCB) that has as large stretch of electric conductor of antenna module grounding parts, be fixed in the strutting piece of printed circuit board (PCB) upper surface, be attached at the antenna body on strutting piece, be positioned at the low noise amplification module of printed circuit board (PCB) upper surface, and the feeder line that comprises heart yearn and braid, described antenna body is a planar inverted-F antenna, it comprises Department of Radiation, be electrically connected and form the first brace of a feedback point with Department of Radiation and be electrically connected with Department of Radiation and with the first brace be spaced a distance with printed circuit board (PCB) on the second brace of being electrically connected of grounding parts, it is characterized in that: described strutting piece is a cubical working of plastics, 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, be electrically connected with the first brace of described antenna body, thereby described heart yearn is connected with the low noise amplification module and the first brace is electrically connected, and described braid is connected with grounding parts on described printed circuit board (PCB).

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

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

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

5. antenna module as claimed in claim 4, is characterized in that: form a fluting between described the second support arm and Department of Radiation, and comprise narrower first paragraph and wider second segment.

6. antenna module as claimed in claim 5, it is characterized in that: to downward-extension, wherein the first brace is connected with first paragraph described the first and second braces from connecting portion, and the second brace is connected with second segment.

7. antenna module as described in claim 5 or 6, it is characterized in that: described antenna body comprises two the second braces, two the second braces respectively from the second segment of connecting portion to downward-extension.

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

9. antenna module as claimed in claim 8, it is characterized in that: the opening that described confession the first brace passes is to be electrically connected with the low noise amplification module, thereby the first brace can be electrically connected with the low noise amplification module, the opening that described confession the second brace passes and grounding parts are electrically connected, thereby the second brace can be electrically connected with grounding parts.