CN2899147Y

CN2899147Y - Double-antenna module

Info

Publication number: CN2899147Y
Application number: CNU2005200474998U
Authority: CN
Inventors: 吴佳泽
Original assignee: Shanghai Huanda Computer Technology Co Ltd; Mitac International Corp
Current assignee: Shanghai Huanda Computer Technology Co Ltd; Mitac International Corp
Priority date: 2005-12-14
Filing date: 2005-12-14
Publication date: 2007-05-09
Anticipated expiration: 2015-12-14

Abstract

The utility model discloses a double-antenna module arranged in an electronic device containing a system module, wherein, the electronic device has a first surface and a second surface perpendicular to the first surface; the double-antenna module also includes a first antenna disposed at the first surface, a second antenna at the second surface and an amplification and switching unit; the amplification and switching unit is used for amplifying the signals received by the first and second antennas and selecting one of the first and second antennas for being connected with the system module to input the amplified received signal into the system module, thereby making the electronic device maintain best receiving effect. The utility model has the advantages of simple structure, convenient use and better use value.

Description

The double antenna module

Technical field

The utility model relates to a kind of Anneta module, be meant especially a kind of can be according to the ornaments mode difference of electronic installation, and select different antennae to come the double antenna module of received signal.

Background technology

As shown in Figures 1 and 2, be existing a kind of exposed plate aerial 10, one end 11 is articulated on the ora terminalis of personal digital assistant (hereinafter to be referred as PDA) 12, this end 11 is launched for centring point upwards pivots to receive (or transmission) signal, and perhaps pivot and folding downwards is at the back side of PDA12.

And in the PDA12 that a global positioning system (GPS) is installed, plate aerial 10 is to be used for receiving satellite signal and offer GPS and position.But because plate aerial 10 is circular polarization aerials, problem with directive property, it is plate aerial 10 only is in upright placement at PDA12 situation, just has preferable receiving function, therefore when PDA12 is turn 90 degrees horizontal placement to the left or to the right, the function of plate aerial 10 received signals will reduce because of the directive property of plate aerial 10, thereby makes the locating speed of GPS and effect therefore be affected.

So, in order to cooperate PDA12 demand upright or that laterally place, must make plate aerial 10 rotate and to rotate along with PDA12, but this degree of difficulty and complexity on meeting increase PDA12 mechanism design, and can't use built-in antenna, and make PDA12 must take more spaces.

Summary of the invention

Main purpose of the present utility model has been to provide a kind of mechanism that does not need to change significantly electronic installation, just can produce the double antenna module of good reception according to the difference ornaments mode of electronic installation.

In order to achieve the above object, double antenna module provided by the utility model, it is arranged on the electronic installation that comprises a system module, and this electronic installation has one first and one vertical with this first second.This double antenna module comprises that one first antenna, one second antenna and amplify and switch unit.And first antenna is located on above-mentioned first; Second antenna is arranged on above-mentioned second; The amplification of above-mentioned double antenna module and switch unit are then in order to amplify the received signal of above-mentioned first and second antenna, and this amplification and switch unit can select the wherein a kind of and said system module of above-mentioned first antenna or second antenna to be connected controllably, are input in the system module in order to the received signal of will amplify.

Than prior art, double antenna module provided by the utility model can not need to change significantly the mechanism of PDA, just can make PDA can have the function of good received signal when different putting position.

Description of drawings

Fig. 1 is for existing a kind of plate aerial and PDA articulates and the schematic side view of pivot;

Fig. 2 is the three-dimensional front-view schematic diagram of plate aerial and PDA shown in Figure 1;

Fig. 3 is the upright schematic appearance of PDA of first preferred embodiment of the utility model double antenna module;

Fig. 4 is the internal circuit calcspar of first embodiment;

Fig. 5 is the horizontal schematic appearance of the PDA of first embodiment;

Fig. 6 is the schematic appearance of second preferred embodiment of the utility model double antenna module;

Fig. 7 is the internal circuit calcspar of second embodiment.

Embodiment

Consult Fig. 3 and shown in Figure 4, be first preferred embodiment of the utility model double antenna module 3, this double antenna module 3 is arranged in the personal digital assistant (calling PDA in the following text) 4 that comprises a global positioning system (calling GPS in the following text) module 40.

PDA4 one is made of and rectangular framework 42 four sides, and comprising one first 43,1 second 44, and this second 44 vertical with first 43 and adjacent.

The double antenna module 3 of present embodiment comprises that one first antenna 31, one second antenna 32 and amplify and switch unit 33.First antenna 31 is one to be attached to flat board (patch) antenna of first 43 bottom surface, and second antenna 32 is one to be attached to the plate aerial of second 44 bottom surface, has one 90 degree angles between itself and first antenna 31.

Amplification and switch unit 33 comprise that (Low Noise Amplifier, LNA) 34,1 second low noise amplifier 35 and switches switch 36 to one first low noise amplifier.And first low noise amplifier 34 is connected with first antenna 31, and in order to amplify the received satellite-signal of first antenna 31, second low noise amplifier 35 is to be connected with second antenna 32, in order to amplify the satellite-signal that second antenna 32 is received.

Diverter switch 36 is a radio-frequency (RF) switch in the present embodiment, the one end is connected with GPS module 40, the other end can be subjected to the control of the central processing unit (not shown) of GPS module 40 or PDA12, goes to select to be connected with first low noise amplifier 34 or second low noise amplifier 35.

So, as shown in Figure 3, when PDA4 is used by upright placement, because first antenna 31 that is arranged at this moment on first 43 has preferable radiation pattern in that this side up, therefore GPS module 40 can be according to a control command of being assigned by the user, go control its switch 36 to select first low noise amplifier 34 to be connected, thereby provide satellite-signal that first antenna 34 received to GPS module 40 with GPS module 40.Similarly, as shown in Figure 5, when PDA12 is laterally placed use, because after PDA4 turn 90 degrees to the right, second 44 upper surface that becomes PDA4, this moment, second antenna 32 be located on second 44 had preferable radiation pattern in this direction, so another control command that can assign according to the user of 40 of GPS modules, control its switch 36 goes to select second low noise amplifier 35 to be connected with GPS module 40, and provides satellite-signal that second antenna 32 received to GPS module 40.

Refer again to Figure 6 and Figure 7, second preferred embodiment of the utility model double antenna module 5, it comprises a flexible circuit board 50, first antenna 31, second antenna 32 and amplification and switch unit 33.Identical with first embodiment, the double antenna module 5 of present embodiment also is to be applied on the PDA4, and flexible circuit board 50 is to be laid on the rectangle framework 42, and it extends to second 44 and be attached to first 43 and second 44 bottom surface by first 43.And first antenna 31 is a plate aerial, its formation (or attaching) is on flexible circuit board 50 and towards first 43, second antenna 32 also is a plate aerial, and its formation (or attach) makes win antenna 31 and second antenna 32 orthogonal on flexible circuit board 50 and towards second 44.

Amplification and switch unit 33 comprise that a low noise amplifier 54 and switches switch 36.One end of low noise amplifier 54 is connected with GPS module 40, the other end is connected with an end of diverter switch 36, and the other end of diverter switch 36 can select wherein a kind of the going of first antenna 31 or second antenna 32 to be connected with low noise amplifier 54 controllably, and 54 pairs first of low noise amplifiers or second antenna, 31,32 satellite-signals that received are amplified.And this diverter switch 36 can together be arranged on the flexible circuit board 50 with low noise amplifier 54, and diverter switch 36 is as above-mentioned, can be subjected to GPS module 40 control and select one of them among both of first antenna 31 or second antenna 32 to be connected in good time with low noise amplifier 54, in order to allow PDA4 when angle is put in conversion, still can keep the function of good received signal.

In addition, present embodiment more can comprise a position detecting instrument that is connected with diverter switch 36 (being an existing electronic component) 56, it is arranged on the flexible circuit board 50, but the angle of putting of Auto-Sensing PDA4 changes, and when PDA4 uprightly places, drive diverter switch 36 and connect first antenna 31 and low noise amplifier 54, and when PDA4 is laterally placed, above-mentioned position detecting instrument 56 is detecting the putting after angle changes of PDA4, just drive diverter switch 36 and connect second antenna 32 and low noise amplifier 54, thereby the different diverter switches 36 that drive automatically that are able to put according to PDA4 angle are switched different antennas for the PDA4 use, make PDA4 put the function that can both keep good received signal come what may.

In sum, the foregoing description is by providing two to be arranged on first and

second antenna

31,32 that PDA4 goes up Different Plane, and put the angle difference according to PDA4, manually or automatically control its switch 36 selects to connect wherein a kind of in first or

second antenna

31,32, and change significantly under the situation of PDA4 mechanism not needing, all have the function of good received signal when making PDA4 be in different putting position.

Claims

1. double antenna module is arranged on and comprises a system module, and have one first and with this first orthogonal second electronic installation on; It is characterized in that: this double antenna module comprises that one is arranged on first above-mentioned first antenna; One second antenna, and be arranged on above-mentioned second; And one amplify and switch unit, in order to amplify above-mentioned first and second antenna received signal, and can select the wherein a kind of and said system module in above-mentioned first antenna or second antenna to be connected controllably, be input in the said system module in order to received signal above-mentioned amplification.

2. double antenna module according to claim 1 is characterized in that: described amplification and switch unit are controlled by the said system module.

3. double antenna module according to claim 1, it is characterized in that: also can comprise a position detecting instrument that is connected with above-mentioned amplification and switch unit, it selects to be connected with this first or second antenna to control this amplification and switch unit in order to detect the putting position of above-mentioned electronic installation.

4. double antenna module according to claim 1 is characterized in that: described amplification and switch unit comprise that one first low noise amplifier, one second low noise amplifier and switch switch, and above-mentioned first low noise amplifier is connected with first antenna; Above-mentioned second low noise amplifier is connected with this second antenna; And above-mentioned diverter switch one end is connected with system module, and the other end is controlled to be connected with above-mentioned first or second low noise amplifier with selection.

5. double antenna module according to claim 1 is characterized in that: described electronic installation is a personal digital assistant.

6. double antenna module according to claim 1 is characterized in that: described system module is a GPS module.

7. double antenna module according to claim 1 is characterized in that: described first antenna and second antenna are plate aerial.

8. double antenna module according to claim 1, it is characterized in that: described amplification and switch unit can comprise that also a low noise amplifier and switches switch, described low noise amplifier one end is connected with system module, the other end is connected with an end of diverter switch, and the other end of diverter switch selects the wherein a kind of and above-mentioned low noise amplifier in above-mentioned first or second antenna to be connected controllably.

9. double antenna module according to claim 8 is characterized in that: comprise a position detecting instrument, and be connected with above-mentioned diverter switch.

10. double antenna module according to claim 8, it is characterized in that: comprise a flexible circuit board, it is arranged on the above-mentioned electronic installation, and extend to second by first face, and above-mentioned first and second antenna all is arranged on the described flexible circuit board and lays respectively on described first and second face.

11. double antenna module as claimed in claim 8 is characterized in that: described diverter switch and low noise amplifier all are arranged on the flexible circuit board.

12. double antenna module as claimed in claim 9 is characterized in that: described position detecting instrument is arranged on the flexible circuit board.