CN102544761A - Electronic device - Google Patents
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- CN102544761A CN102544761A CN2010106039473A CN201010603947A CN102544761A CN 102544761 A CN102544761 A CN 102544761A CN 2010106039473 A CN2010106039473 A CN 2010106039473A CN 201010603947 A CN201010603947 A CN 201010603947A CN 102544761 A CN102544761 A CN 102544761A
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Abstract
The invention provides an electronic device. The electronic device comprises a first radiation source component, a second radiation source component, an impedance matching component and a metal ground plate, wherein the metal ground plate is used for providing a system ground plane; a spacing distance exists between the first and second radiation source components and the metal ground plate; the impedance matching component is connected with the first radiation source component and the second radiation source component and is used for being matched with real and imaginary impedance of the first and second radiation source components; the impedance matching component is provided with a first end and a second end; the first end and the second end are respectively connected to the first radiation source component and the second radiation source component; and the impedance matching component is arranged between dipole antennas of the electronic device. The electronic device has the following beneficial effects that: the high efficiency radiation effect can be achieved by appropriately selecting the length of the impedance matching component; and meanwhile, the spacing distance from the metal ground plate is shorter so as to save the volume of the electronic device.
Description
Technical field
The present invention relates to a kind of electronic installation, and relate in particular to the electronic installation of a kind of neighbour of having in the Improvement type dipole antenna of metal substrate.
Background technology
Electronic installation has the function of radio communication mostly at present, and develops towards the direction that reduces volume.Under this development trend, the frame of electronic installation continues to be reduced, and the ratio that screen accounts for electronic installation continues to increase.But, the increase of screen but causes the screen area of printed circuit board (PCB) in electronic installation behind to increase simultaneously comparatively speaking.The printed circuit board (PCB) major part is a sandwich construction at present, and must comprise a metallic plate (or metal system ground plane).If it is too near that antenna and metallic plate lean on, the antenna of wireless communication module will seriously receive the influence of this metallic plate (or metal system ground plane).
When antenna and metallic plate (or metal system ground plane) spacing distance during less than 7 millimeters, because capacitance coupling effect and impedance between metallic plate and the antenna do not match, the radiation effect of antenna will reduce.Lifting dipole antenna is that example is explained, known antenna technology only can be reached dipole antenna and metallic plate (or metal system ground plane) at interval more than 7 millimeters at present.Suppose that the spacing distance between antenna and the metallic plate (or metal system ground plane) is less than 7 millimeters, the radiation effect of antenna will reduce significantly, and then influences the radio communication quality of electronic installation.Yet antenna is arranged in the space of frame mostly, and the available space of the frame of electronic installation needs reduction accordingly because of the increase of screen proportion.
Summary of the invention
In sum, the purpose of example embodiment of the present invention provides a kind of electronic installation, to address the above problem.
The present invention proposes a kind of electronic installation, and it comprises first radiation source elements, second radiation source elements, impedance matching element and metal substrate.Metal substrate is in order to provide system ground, and first radiation source elements and second radiation source elements have a spacing distance apart from this metal substrate.Impedance matching element connects first radiation source elements and second radiation source elements, in order to mate the real impedance and the imaginary impedance of first radiation source elements and second radiation source elements.Impedance matching element has first end and second end, and first end is connected to first radiation source elements, and second end is connected to second radiation source elements.
In an example embodiment of the present invention, described spacing distance is more than or equal to 1.5 millimeters and be less than or equal to 4 millimeters.
In an example embodiment of the present invention, described first radiation source elements, second radiation source elements and impedance matching element are formed dipole antenna.
In an example embodiment of the present invention, described impedance matching element is a lead.
In an example embodiment of the present invention, described impedance matching element has the lead of the formula winding structures that wriggle more.
In an example embodiment of the present invention, when described dipole antenna operated in the high frequency frequency, impedance matching element had the equivalent inductance value, and this equivalent inductance value is in order to mate the real impedance and the imaginary impedance of first radiation source elements and second radiation source elements.
In an example embodiment of the present invention; When described dipole antenna operates in the high frequency frequency; Impedance matching element has equivalent inductance value and equivalent capacitance value, and this equivalent inductance value therewith equivalent capacitance value mate the real part and the imaginary impedance of first radiation source elements and second radiation source elements.
In an example embodiment of the present invention, when described dipole antenna operated in the high frequency frequency, impedance matching element had the equivalent inductance value, and the characteristic impedance of adjusting first radiation source elements and second radiation source elements of equivalent inductance value is a real impedance to 50 ohm.
In an example embodiment of the present invention, described impedance matching element also has first transit point, second transit point and extension, and wherein this extension is connected to second transit point.
In an example embodiment of the present invention, first transit point and second transit point are all the right angle.
Electronic installation provided by the present invention; Impedance matching element connects the dipole antenna of this electronic installation, and the length of this impedance matching element makes this dipole antenna under the situation near metal substrate through selecting; When in the assigned operation frequency band, operating; Can reach the high efficiency radiation effect, and reduce the spacing distance between dipole antenna and the metal substrate simultaneously, to save the volume of electronic installation.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs. elaborates as follows.
Description of drawings
Fig. 1 is the sketch map according to a kind of electronic installation of an example embodiment of the present invention;
Fig. 2 is according to a kind of Anneta module of first example embodiment of the present invention and the sketch map of metal substrate;
Fig. 3 is according to a kind of Anneta module of second example embodiment of the present invention and the sketch map of metal substrate;
Fig. 4 is according to a kind of Anneta module of the 3rd example embodiment of the present invention and the sketch map of metal substrate;
Fig. 5 is according to a kind of Anneta module of the 4th example embodiment of the present invention and the sketch map of metal substrate;
Fig. 6 is according to a kind of Anneta module of the 5th example embodiment of the present invention and the sketch map of metal substrate.
Embodiment
The embodiment of the invention proposes a kind of electronic installation.Fig. 1 is the sketch map according to a kind of electronic installation 10 of an example embodiment of the present invention.Please with reference to Fig. 1, this electronic installation 10 comprises display unit (or a screen) 110, casing 120 and Anneta module 130 at least.Electronic installation 10 also can comprise printed circuit board (PCB) (not shown, as to be designated hereinafter simply as pcb board) and metal substrate (not shown, metal ground plane) and input unit (not shown) etc.In addition, Anneta module 130 coaxial cables capable of using (coaxial cable) are coupled to the transceiver module (not shown) of printed circuit board (PCB).In this example embodiment; This Anneta module 130 is an Improvement type dipole antenna (dipole antenna); And between this Anneta module 130 and the described metal substrate spacing distance is arranged; Make when this Anneta module 130 operates in an operational frequency bands, the electromagnetic wave signal intensity of radiation expection with present preferable radiation effect.What deserves to be mentioned is at this because Anneta module 130 is a bipolar antenna, must collocation property ground during near metal substrate, just can have preferable radiation effect.Below will introduce in this electronic installation 10 relation of Anneta module 130 and metal substrate, and the detailed technology content of Anneta module 130 with Fig. 2 to Fig. 6.
Fig. 2 is according to a kind of Anneta module 130 of first example embodiment of the present invention and the sketch map of metal substrate 240.According to first example embodiment, embodiment of the invention institute proposition electronic installation 10 comprises first radiation source elements 231, second radiation source elements 232, impedance matching element 233 and metal substrate 240.Please be simultaneously with reference to Fig. 1 and Fig. 2; First radiation source elements 231, second radiation source elements 232, impedance matching element 233 constitute described Anneta module 130; And this Anneta module 130 is arranged in the space in the frame of casing 120, but and a spacing distance is arranged between the metal substrate 240.Space in the above-mentioned frame for example is the space between display floater and casing 120 top sides.First radiation source elements 231 is in order to radiation one high-frequency signal, and second radiation source elements 232 is coupled to first radiation source elements 231, in order to this high-frequency signal of while radiation.In this example embodiment, described impedance matching element 233 is a lead.
In first example embodiment, between first radiation source elements 231 and one second radiation source elements 232 to the described metal substrate 240 a spacing distance D is arranged, and described spacing distance D is more than or equal to 1.5 millimeters and be less than or equal to 4 millimeters.In addition, in a most preferred embodiment, described spacing distance D is 2.5 millimeters.Compare with the execution mode of known dipole antenna, the spacing distance that the Anneta module 130 that the embodiment of the invention proposed and the execution mode of metal substrate 240 reduce between dipole antenna and the metal substrate 240 significantly reaches more than 60%.
In first example embodiment; Impedance matching element 233 connects first radiation source elements 231 and second radiation source elements 232; In order to when Anneta module 130 and metal substrate 240 operate, mate the real impedance and the imaginary impedance (imaginary impedance) of first radiation source elements 231 and second radiation source elements 232 in an operational frequency bands (or frequency of described high-frequency signal).Described operational frequency bands (or frequency of described high-frequency signal) for example is 2.4GHz, but the present invention is not limited thereto, and also may be implemented in other operational frequency bands or wave frequency.As shown in Figure 2, impedance matching element 233 has one first end and one second end, and first end is connected to first radiation source elements 231, and second end is connected to second radiation source elements 232.240 of metal substrates provide a system ground.
Illustrate; Suppose that Anneta module 130 only has first radiation source elements 231 and second radiation source elements 232; And the spacing distance D of first radiation source elements 231 and second radiation source elements 232 and metal substrate 240 is during less than 4 millimeters; And when not having impedance matching element 233 to connect first radiation source elements 231 and second radiation source elements 232, the impedance Z of first radiation source elements 231 and second radiation source elements 232=20+j70 ohm (Ω).Suppose at assigned operation frequency band (or frequency of described high-frequency signal) under the situation of 2.4GHz; The length of suitably selecting impedance matching element 233 is for having equivalent inductance value and equivalent capacitance value; Make when impedance matching element 233 connects first radiation source elements 231 and second radiation source elements 232 that described equivalent inductance value and equivalent capacitance value are matched in fact by 70 Ω the imaginary impedance value of impedance Z that convergence is 0 Ω.Perhaps; Can assigned operation frequency band (or frequency of described high-frequency signal) be under the situation of 2.4GHz also; The length of suitably selecting impedance matching element 233 is for have equivalent inductance value and equivalent capacitance value simultaneously; With the imaginary impedance value of the impedance Z of mating first radiation source elements 231 and second radiation source elements 232, making this imaginary impedance value mate convergence in fact is 0 Ω.
Similar ground; In first example embodiment; Also can suitably select the length of impedance matching element 233; Make described dipole antenna (or Anneta module 130) when assigned operation frequency band (or frequency of described high-frequency signal) operates, impedance matching element 233 has an equivalent inductance value, and the real impedance that the equivalent inductance value is adjusted the impedance Z of first radiation source elements 231 and second radiation source elements 232 is essentially 0 Ω to being essentially 50 Ω and imaginary impedance.Thus, when Anneta module 130 operated at identical assigned operation frequency band (or frequency of described high-frequency signal), the return loss that is had (return loss) value was for reaching the situation of impedance matching.Except the execution mode of Fig. 2 middle impedance matching element 233, below will come further to introduce the multiple enforcement appearance attitude of impedance matching element with Fig. 3 to Fig. 6.
Fig. 3 is according to a kind of Anneta module 230 of second example embodiment of the present invention and the sketch map of metal substrate 240.It is similar haply that the relation of described Anneta module 230 and metal substrate 240 and first example embodiment are mentioned.Only different place is, the impedance matching element 333 of Anneta module 230 is one to have birectangular lead.Impedance matching element 333 has than the right angle A (or making the first transit point A) near first radiation source elements 231, and than another right angle B (or making the second transit point B) near second radiation source elements 232.With the impedance matching element 233 similar ground in first example embodiment; In second example embodiment; Can suitably select the length of impedance matching element 333; Make described dipole antenna (or Anneta module 230) when assigned operation frequency band (or frequency of described high-frequency signal) operates, impedance matching element 333 has an equivalent inductance value, or has equivalent inductance value and equivalent capacitance value simultaneously; With the imaginary impedance value of the impedance Z of offsetting first radiation source elements 231 and second radiation source elements 232, make to be matched to this imaginary impedance value in fact convergence is 0 Ω.
Perhaps; In second example embodiment; Can select the length of impedance matching element 333, make described dipole antenna (or Anneta module 230) when assigned operation frequency band (or frequency of described high-frequency signal) operates, impedance matching element 333 has an equivalent inductance value; Or have equivalent inductance value and equivalent capacitance value simultaneously, with the real impedance of the impedance Z of adjusting first radiation source elements 231 and second radiation source elements 232 to be essentially 50 Ω and imaginary impedance in fact convergence be 0 Ω.
Fig. 4 is according to a kind of Anneta module 330 of the 3rd example embodiment of the present invention and the sketch map of metal substrate 240.It is similar haply that the relation of described Anneta module 330 and metal substrate 240 and second example embodiment are mentioned.Only different place is that the impedance matching element 433 of Anneta module 330 comprises one first transit point A, one second transit point B and an extension 435, and wherein this extension 435 is connected to the second transit point B.Thus, extension 435 will can be used to produce an equivalent capacitance.
With the impedance matching element 233 similar ground in first example embodiment; In the 3rd example embodiment; Can suitably select first length of impedance matching element 433 and second length of extension 435; Make described dipole antenna (or Anneta module 330) when assigned operation frequency band (or frequency of described high-frequency signal) operates; Impedance matching element 433 has equivalent inductance value and equivalent capacitance value simultaneously, in order to the real part and the imaginary impedance of coupling metal substrate 240 and first radiation source elements 231 and second radiation source elements 232.Make that the real impedance of impedance Z is 0 Ω to being essentially 50 Ω and imaginary impedance convergence.
Perhaps; In the 3rd example embodiment; Can suitably select first length of impedance matching element 433 and second length of extension 435; Make described dipole antenna (or Anneta module 330) when assigned operation frequency band (or frequency of described high-frequency signal) operates, have equivalent inductance value and equivalent capacitance value simultaneously, with the real impedance of the impedance Z of adjusting first radiation source elements 231 and second radiation source elements 232 to be essentially 50 Ω and imaginary impedance in fact convergence be 0 Ω.
Fig. 5 is according to a kind of Anneta module 430 of the 4th example embodiment of the present invention and the sketch map of metal substrate 240.It is similar haply that the relation of described Anneta module 430 and metal substrate 240 and first example embodiment are mentioned.Only different place is that the impedance matching element 533 of Anneta module 430 can use at Anneta module 430 under the situation of limited length, through winding mode, reaches intended guidewire length for having a lead of formula (meander) winding structures that wriggle more.With the impedance matching element 233 similar ground in first example embodiment; In the 4th example embodiment; Can suitably select the length of impedance matching element 533; Make described dipole antenna (or Anneta module 430) when assigned operation frequency band (or frequency of described high-frequency signal) operates; Impedance matching element 533 has an equivalent inductance value, or has equivalent inductance value and equivalent capacitance value simultaneously, in order to mate the real part and the imaginary impedance of first radiation source elements 231 and second radiation source elements 232.Make that the real impedance of impedance Z is 0 Ω to being essentially 50 Ω and imaginary impedance convergence.
Perhaps; In the 4th example embodiment; Can select the length of impedance matching element 533, make described dipole antenna (or Anneta module 430) when assigned operation frequency band (or frequency of described high-frequency signal) operates, impedance matching element 533 has an equivalent inductance value; Or have equivalent inductance value and equivalent capacitance value simultaneously, with the real impedance of the impedance Z of adjusting first radiation source elements 231 and second radiation source elements 232 to be essentially 50 Ω and imaginary impedance in fact convergence be 0 Ω.
Fig. 6 is according to a kind of Anneta module 530 of the 5th example embodiment of the present invention and the sketch map of metal substrate 240.It is similar haply that the relation of described Anneta module 530 and metal substrate 240 and first example embodiment are mentioned.Unique different place is that the impedance matching element 633 of Anneta module 530 is a coil (lead with spiral type winding structure), but with under the limited situation of Anneta module 530 usage spaces, reaches intended guidewire length.With the impedance matching element 233 similar ground in first example embodiment; In the 4th example embodiment; Can suitably select the length of impedance matching element 633; Make described dipole antenna (or Anneta module 530) when assigned operation frequency band (or frequency of described high-frequency signal) operates; Impedance matching element 633 has an equivalent inductance value, or has equivalent inductance value and equivalent capacitance value simultaneously, in order to mate the real part and the imaginary impedance of first radiation source elements 231 and second radiation source elements 232.Make that the real impedance of impedance Z is 0 Ω to being essentially 50 Ω and imaginary impedance convergence.
Perhaps; In the 5th example embodiment; Can select the length of impedance matching element 633, make described dipole antenna (or Anneta module 530) when assigned operation frequency band (or frequency of described high-frequency signal) operates, impedance matching element 633 has an equivalent inductance value; Or have equivalent inductance value and equivalent capacitance value simultaneously, with the real impedance of the impedance Z of adjusting first radiation source elements 231 and second radiation source elements 232 to be essentially 50 Ω and imaginary impedance in fact convergence be 0 Ω.
In sum, according to above-mentioned example embodiment, the present invention provides a kind of electronic installation.Has an impedance matching element between the dipole antenna of this electronic installation.Utilize the length of suitably choosing this impedance matching element; Make this dipole antenna under situation near a metal substrate; When operating in the assigned operation frequency band or in the radiation frequency; Can reach high efficiency radiation effect, and realize the more spacing distance of adjacent metal substrate of more known dipole antenna execution mode simultaneously, to save the volume of electronic installation.
Though the present invention discloses as above with embodiment; Right its is not that any those of ordinary skills are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that claims define.
Claims (10)
1. an electronic installation is characterized in that, comprising:
First radiation source elements;
Second radiation source elements;
Metal substrate, in order to system ground to be provided, above-mentioned first radiation source elements and above-mentioned second radiation source elements have a spacing distance apart from said metal substrates; And
Impedance matching element; Connect above-mentioned first radiation source elements and above-mentioned second radiation source elements; Above-mentioned impedance matching element is in order to mate the real impedance and the imaginary impedance of above-mentioned first radiation source elements and above-mentioned second radiation source elements; Wherein above-mentioned impedance matching element has first end and second end, and above-mentioned first end is connected to above-mentioned first radiation source elements, and above-mentioned second end is connected to above-mentioned second radiation source elements.
2. electronic installation according to claim 1 is characterized in that, above-mentioned spacing distance is more than or equal to 1.5 millimeters and be less than or equal to 4 millimeters.
3. electronic installation according to claim 1 is characterized in that, above-mentioned first radiation source elements, above-mentioned second radiation source elements and above-mentioned impedance matching element are formed dipole antenna.
4. electronic installation according to claim 3; It is characterized in that; When above-mentioned dipole antenna operates in the high frequency frequency; Above-mentioned impedance matching element has the equivalent inductance value, and above-mentioned real impedance and the above-mentioned imaginary impedance of above-mentioned equivalent inductance value in order to mate above-mentioned first radiation source elements and above-mentioned second radiation source elements.
5. electronic installation according to claim 3; It is characterized in that; When above-mentioned dipole antenna operates in the high frequency frequency; Above-mentioned impedance matching element has equivalent inductance value and equivalent capacitance value, and above-mentioned equivalent inductance value and above-mentioned real impedance and the above-mentioned imaginary impedance of above-mentioned equivalent capacitance value in order to mate above-mentioned first radiation source elements and above-mentioned second radiation source elements.
6. electronic installation according to claim 3; It is characterized in that; When above-mentioned dipole antenna operates in the high frequency frequency; Above-mentioned impedance matching element has the equivalent inductance value, and above-mentioned equivalent inductance value is adjusted the above-mentioned real impedance to 50 ohm of above-mentioned first radiation source elements and above-mentioned second radiation source elements.
7. electronic installation according to claim 1 is characterized in that, above-mentioned impedance matching element is a lead.
8. electronic installation according to claim 1 is characterized in that, above-mentioned impedance matching element is the lead with the formula winding structures that wriggle more.
9. electronic installation according to claim 1 is characterized in that above-mentioned impedance matching element also has first transit point, second transit point and extension, and wherein above-mentioned extension is connected to above-mentioned second transit point.
10. electronic installation according to claim 9 is characterized in that, above-mentioned first transit point and above-mentioned second transit point are all the right angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106039473A CN102544761A (en) | 2010-12-22 | 2010-12-22 | Electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106039473A CN102544761A (en) | 2010-12-22 | 2010-12-22 | Electronic device |
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| CN102544761A true CN102544761A (en) | 2012-07-04 |
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| CN2010106039473A Pending CN102544761A (en) | 2010-12-22 | 2010-12-22 | Electronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931927A (en) * | 2012-10-09 | 2013-02-13 | 昆山美博通讯科技有限公司 | Impedance matching method for power amplification module |
| CN104335420A (en) * | 2014-04-22 | 2015-02-04 | 华为终端有限公司 | Antenna system and terminal |
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| CN1345473A (en) * | 1999-12-24 | 2002-04-17 | 松下电器产业株式会社 | Built-in antenna of wireless communication terminal |
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| JP3677559B2 (en) * | 1996-07-26 | 2005-08-03 | アイシン精機株式会社 | Partially feeding dipole antenna |
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| JP2009159244A (en) * | 2007-12-26 | 2009-07-16 | Tohoku Univ | Magnetic material antenna |
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| JP3677559B2 (en) * | 1996-07-26 | 2005-08-03 | アイシン精機株式会社 | Partially feeding dipole antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102931927A (en) * | 2012-10-09 | 2013-02-13 | 昆山美博通讯科技有限公司 | Impedance matching method for power amplification module |
| CN102931927B (en) * | 2012-10-09 | 2015-07-15 | 昆山美博通讯科技有限公司 | Impedance matching method for power amplification module |
| CN104335420A (en) * | 2014-04-22 | 2015-02-04 | 华为终端有限公司 | Antenna system and terminal |
| US9905934B2 (en) | 2014-04-22 | 2018-02-27 | Huawei Device (Dongguan) Co., Ltd. | Antenna system and terminal |
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Application publication date: 20120704 |