CN101777692B

CN101777692B - Antenna assembly

Info

Publication number: CN101777692B
Application number: CN2009100022565A
Authority: CN
Inventors: 蔡调兴; 林俊仁; 方启印; 廖志威
Original assignee: Quanta Computer Inc
Current assignee: Quanta Computer Inc
Priority date: 2009-01-13
Filing date: 2009-01-13
Publication date: 2012-11-07
Anticipated expiration: 2029-01-13
Also published as: CN101777692A

Abstract

An antenna assembly which can be used for receiving GPS signals comprises a first base plate and a second base plate which is substantially vertically arranged on the surface of the first base plate. The surface of the first base plate is also provided with a ground portion for grounding, a feed-in section used for the signals to feed in and a short-circuit section with one end connected with the ground portion. The second base plate is provided with an antenna body which is provided with a feed-in point connected with the feed-in section and a short-circuit point connected with the short-circuit section.

Description

Antenna assembly

Technical field

The invention relates to an antenna assembly, be meant especially a kind of have size be not more than the operation wavelength twice and by conductor radiator form electric on the antenna assembly of short antenna.

Background technology

Consult Fig. 1; Generally has GPS (Global Positioning System in use; Hereinafter to be referred as GPS) portable communication equipment 9 time; Be to let communicator 9 be erectility, while make things convenient for the user can notice that road conditions are seeing that the screen of communicator 9 learns the direction that maybe will advance in the position.

Therefore; The gps antenna 91 of communicator 9 must be the antenna with good z direction signal transmitting-receiving ability; That is the upper half plane of its radiation pattern is preferably near complete hemisphere; So the set-up mode of gps antenna 91 is different from general antenna 92 in the communicator 9, and is as shown in Figure 1, this set-up mode can guarantee that gps antenna 91 has the transmitting-receiving ability of the better z direction signal of general antenna 92.

But; The personal electric product is done extremely thinly more now; Do not have too many space and let gps antenna 91 be arranged in the communicator 9 with the mode that is parallel to the xy plane, it is one of important antenna subjects under discussion that making conforms with modern gps antenna 91 for the demand on the electronic product size.

Summary of the invention

Therefore, the object of the invention, the upper half plane that just provides a kind of radiation pattern is near complete hemisphere and the petite antenna assembly of volume.

So; Antenna assembly of the present invention comprises one first substrate and is lip-deep second substrate that vertically is located at this first substrate substantially; On the surface of first substrate, also be provided with the shorted segment that a grounding parts in order to ground connection, a usefulness are connected with this grounding parts for the feed-in section and an end of signal feed-in; Then be provided with an antenna body on this second substrate, this antenna body has the load point that is connected with this feed-in section, and the short dot that is connected with this shorted segment.

Preferably, the antenna body of antenna assembly can be to comprise first Department of Radiation that on the first surface of this second substrate, extends, and one second Department of Radiation that on the second surface of this second substrate, extends; First Department of Radiation has this load point and one first link, and this second Department of Radiation has second link that this short dot and is electrically connected with this first link.

More preferably, be equipped with a perforation on second substrate of antenna assembly, this perforation bridge joint is between this first link and this second link.

More preferably, antenna assembly also comprises a coupled section of on the surface on this first substrate, extending, and an end is connected with this grounding parts, and this coupled section is that the compartment of terrain is adjacent to this second Department of Radiation.

Another object of the present invention is to provide a kind of easy to make and easy antenna assembly of assembling.

More preferably, second substrate of antenna assembly has a projection, and be equipped with on this first substrate one supply this projection to plug slot, and this feed-in section is to weld together with this load point, and this shorted segment is to weld together with this short dot.

Effect of the present invention is; Utilizing second substrate is vertically to be located on the surface of this first substrate; Let the antenna body that is laid on second substrate can be when antenna assembly becomes erectility; Facing to the direction of zenith, make the upper half plane of its radiation pattern have shape near complete hemisphere, just have good z direction signal transmitting-receiving ability.

Description of drawings

Fig. 1 is a stereogram, and generally the have GPS portable communication equipment of (Global PositioningSystem is hereinafter to be referred as GPS) is shown;

Fig. 2 is the combination stereogram of the preferred embodiment of antenna assembly of the present invention;

Fig. 3 is the front view that each element is gone up on first substrate and surface thereof;

Fig. 4 is second substrate and the front view of going up each element thereof;

Fig. 5 is second substrate and the dorsal view of going up each element thereof;

Fig. 6～shown in Figure 9 is first substrate and second substrate 2 and be positioned at both and go up each size of component figure;

Figure 10 is voltage standing wave(VSW) ratio (VSWR) the measurement data figure of present embodiment antenna assembly 10; And

When Figure 11 is operated in 1575MHz for present embodiment, on the xy plane, xz plane, yz plane and three-dimensional radiation pattern measurement result.

The main element symbol description

10 antenna assemblies

1 first substrate

11 surfaces

13,14 slots

2 second substrates

21 first surfaces

22 second surfaces

23,24 projections

25 perforations

31 grounding parts

32 feed-in sections

33 shorted segments

34 coupled section

4 antenna bodies

41 first Departments of Radiation

411 first load points

412 first links

42 second Departments of Radiation

421 banded regions

422 trigonums

423 second links

424 short dots

Embodiment

About aforementioned and other technology contents, characteristics and effect of the present invention, in the DETAILED DESCRIPTION OF THE PREFERRED of following cooperation, can clearly appear with reference to accompanying drawing.

Consult Fig. 2, Fig. 2 is the combination stereogram of the preferred embodiment of antenna assembly 10 of the present invention.Antenna assembly 10 comprises one first substrate 1 and is second substrate 2 on the surface 11 that vertically is located at this first substrate 1 substantially.In the present embodiment; First substrate 1 is actually the main circuit plate of general portable communication equipment; Usually be covered with various chips and circuit or the like on it, the part relevant with antenna assembly of the present invention 10 only is shown among the figure, all the other electronic components all omit; And present embodiment is to be applicable to GPS (Global Positioning System; Hereinafter to be referred as GPS) a carrier frequency (1575.42 ± 1.023MHz), and can keep the basic receiving efficiency of antenna, more with its miniaturization.

Cooperate and consult Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is the front view of each element on first substrate 1 and the surface 11 thereof, and Fig. 4 and Fig. 5 then are respectively second substrate 2 and front view and the dorsal view of going up each element thereof.This second substrate 2 has two

projections

23,24, then is equipped with one in corner location on this first substrate 1 and supplies this two

projection

23,24 two slots 13,14 of corresponding inserted respectively; After second substrate 2 is plugged on first substrate 1, can also under the prerequisite that does not influence its electrical connection, select the appropriate location, with block tin two

substrates

1,2 welding are fixed up, to promote its structural stability.

Antenna assembly 10 also includes lip-deep one grounding parts 31 in order to ground connection that is located at first substrate 1, a usefulness for the feed-in section 32 of signal feed-in, the shorted segment 33 that an end is connected with this grounding parts 31, and the coupled section 34 that is connected with this grounding parts 31 of an end; This feed-in section 32 can supply signal feed-in line (figure does not show) to connect, and this coupled section 34 is to extend along the one side on first substrate, 1 surface 11, and parallel at intervals with second substrate 2.

Antenna assembly 10 also comprises the first surface 21 that is located at this second substrate 2 and the antenna body 4 on the second surface 22, and it is that an area only has 23*5mm that second substrate 2 of present embodiment does not contain

projection

23,24 ²And thickness is the plate body of 2.7mm, and this antenna body 4 is to comprise being located at being one first Department of Radiation 41 that extends on the first surface 21 bandedly, and is located at second Department of Radiation 42 that extends on the second surface 22; This first Department of Radiation 41 is the diagonal extensions along first surface 11; And load point 411 with feed-in section 32 welding on one and first substrate 1; And first link 412 away from load point 411; This load point 411 is to be positioned on the corner of these first surface 21 contiguous these first substrates 1, and first link 412 then is the corner that is positioned at the subtend of this corner; 42 of this second Departments of Radiation comprise a banded regions 421; Reach the trigonum 422 that an end is connected with this banded regions 421; Banded regions 421 has one second link 423; This second link 423 is to be positioned on the corner of second surface 22; With first link 412 be respectively the position second, first surface 22,21 mutually back to the position on, and second link 423 is that the perforation 25 that sees through on second substrate 2 is electrically connected with first link 412 of relative position, and this banded regions 421 thus corner along vertical one side past first substrate 1 extension of this second surface 22 and this first substrate 1; The trigonum 422 of second Department of Radiation 42 is by the end of this banded regions 421 away from this second link 423, one side along this second surface 22 smooth extending of this first substrate 1 gradually widely, trigonum 422 have one with the short dot 424 of these shorted segment 33 welding.In the present embodiment; The coupled section 34 of antenna assembly 10 can produce coupling effect with antenna body 4; Make the former antenna body 4 that should be operated in than the taller frequency range of gps carrier frequency; Can in limited space, reach the effect of frequency reducing, so antenna assembly 10 can be applicable to just in the communicator with GPS function.

The actual size of present embodiment sees also Fig. 6～Fig. 9; Shown in Figure 6 is the front view of each element on first substrate 1 and the surface 11 thereof; Fig. 7 and Fig. 8 are respectively second substrate 2 and front view and the dorsal view of going up each element thereof; Fig. 9 then is the end view of second substrate 2, and arithemetic unit is mm among each figure, can consult each association to learn the actual size of present embodiment.

Consult Figure 10; Figure 10 is voltage standing wave(VSW) ratio (VSWR) the measurement data figure of present embodiment antenna assembly 10; Can learn through experiment, the voltage standing wave ratio measured value of flat plane antenna 10, its voltage standing wave ratio (VSWR) all is lower than 2 in the frequency range of 1575.42 ± 1.023MHz; Reach the radiation efficiency basic demand of antenna, so can be applicable to really in the GPS frequency range of present embodiment.

Consult following table 1, table 1 is the gain extreme value (zenith gain) and gain mean value (Avg.gain) of present embodiment antenna assembly 10 in various visible angles (Field of View is called for short FOV).

Table 1

FOV (elevation angle)	Gain extreme value (dBic)	Gain mean value (dBic)
			0°～75°	-5.2	-4.9
0°～90°	-5.2	-5.2
			0°～120°	-5.2	-5.7
0°～180°	-5.2	-6.4

Its radiation pattern of present embodiment (Radiation Pattern), shown in figure 11.When Figure 11 is operated in 1575MHz for present embodiment; On the xy plane, xz plane, yz plane and three-dimensional radiation pattern measurement result; Wherein three-dimensional field pattern figure is the most normal measurement result of the right hand circularly polarised wave (RHCP) of application in the general GPS field; Color is partly represented its yield value (gain, unit: dBic), and the field pattern figure on other planes; Dark dotted line is the measurement result of right hand circularly polarised wave and light dotted line is the measurement result of left hand circularly polarised wave (LHCP), and solid line then is both comprehensive (Total).Can learn by each radiation pattern figure; Antenna assembly 10 at the radiation pattern of z direction near the isotropic directivity radiation pattern; Just the radiation pattern of its zenith direction is the kenel near a hemisphere; This characteristic also is all to be the satellite that comes from the space in order to cooperate gps signal, therefore antenna assembly 10 is uprightly placed, and can reach good receiving efficiency.

In sum; Present embodiment utilizes second substrate 2 vertically to be located on the surface of this first substrate 1; Let second Department of Radiation 42 that is laid in the antenna body 4 on second substrate 2 can be when antenna assembly 10 is erectility,, make the upper half plane of radiation pattern of antenna assembly 10 have shape near complete hemisphere facing to the direction of zenith; Just has good z direction signal transmitting-receiving ability; And because coupled section 34 can produce coupling effect with antenna body 4, making antenna body 4 can be printed on area only has 23*5mm ² Second substrate 2 on, in so limited space, given play to the function of transmitting-receiving gps signal.

The above person is merely the preferred embodiments of the present invention, and when not limiting the scope that the present invention implements with this, the simple equivalent of promptly doing according to content of the present invention generally changes and modifies, and all still belongs in the scope of the present invention.

Claims

1. antenna assembly comprises:

One first substrate has a surface;

One grounding parts is located on this first substrate and in order to ground connection;

One second substrate is on the surface that vertically is located at this first substrate substantially, and this second substrate has a first surface and a second surface; And

One antenna body extends on this second substrate, and has the load point of using for the signal feed-in, and the short dot that is electrically connected with this grounding parts, and this antenna body is to comprise:

One first Department of Radiation extends on the first surface of this second substrate, and has this load point and one first link; And

One second Department of Radiation extends on the second surface of this second substrate, and has this short dot, and second link that is electrically connected with this first link,

Wherein this second Department of Radiation comprises that one has the banded regions of this second link; And has a trigonum that this short dot and an end are connected with this banded regions; This trigonum is by the end of this banded regions away from this second link, one side extending along contiguous this first substrate of this second surface gradually widely.

2. antenna assembly according to claim 1, wherein, this second substrate has a projection, and is equipped with the slot that this projection of confession plugs on this first substrate.

3. antenna assembly according to claim 2; Also be included in the feed-in section and the shorted segment that extend on the surface of this first substrate; One end of this feed-in section is connected with the load point of this antenna body and uses for the signal feed-in, and this shorted segment bridge joint is between the short dot of this grounding parts and this antenna body.

4. antenna assembly according to claim 3, wherein, this feed-in section is to weld together with this load point, and this shorted segment is to weld together with this short dot.

5. antenna assembly comprises:

One first substrate has a surface;

One usefulness is extended on the surface of this first substrate for the feed-in section of signal feed-in;

One shorted segment extends on the surface of this first substrate and an end is connected with this grounding parts;

One antenna body extends on this second substrate, and has the load point that is connected with this feed-in section, and the short dot that is connected with this shorted segment, and this antenna body comprises:

One first Department of Radiation extends on the first surface of this second substrate, and has this load point and one first link, and this first Department of Radiation is to be bandedly to extend; And

6. antenna assembly according to claim 5 wherein, is equipped with a perforation on this second substrate, and this perforation bridge joint is between this first link and this second link.

7. antenna assembly according to claim 6; Wherein, This second substrate is rectangular substantially; This first Department of Radiation is to extend along the diagonal of this first surface, and this load point is to lay respectively at the corner that this first surface is close to this first substrate with this first link, and the corner of the subtend of this corner.

8. antenna assembly according to claim 7; Wherein, Second link of this banded regions is a corner that is positioned at contiguous this first link of this second surface, and this banded regions is extended toward first substrate along this second surface one side vertical with this first substrate by this corner.

9. antenna assembly according to claim 5 also comprises a coupled section of on the surface on this first substrate, extending, and an end is connected with this grounding parts, and this coupled section is that the compartment of terrain is adjacent to this second Department of Radiation.

10. according to arbitrary described antenna assembly in the claim 5～9, wherein, this second substrate has a projection, and is equipped with the slot that this projection of confession plugs on this first substrate.

11. antenna assembly according to claim 10, wherein, this feed-in section is to weld together with this load point, and this shorted segment is to weld together with this short dot.